security.cisco.com - dns.ninja

`security.cisco.com`

DNSSEC	⚠️ Not signed
A	52.85.193.50^{🇺🇸 Amazon52.85.192.0/22 - CloudFront TD}
		PTR	`server-52-85-193-50.iad55.r.cloudfront.net`
A	52.85.193.77^{🇺🇸 Amazon52.85.192.0/22 - CloudFront TD}
A	52.85.193.114^{🇺🇸 Amazon52.85.192.0/22 - CloudFront TD}
A	52.85.193.123^{🇺🇸 Amazon52.85.192.0/22 - CloudFront TD}
NS	`ns-827.awsdns-39.net` ⭐
		A	2600:9000:5303:3b00::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-827.awsdns-39.net`
		A	205.251.195.59^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-827.awsdns-39.net`
NS	`ns-1405.awsdns-47.org`
		A	2600:9000:5305:7d00::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1405.awsdns-47.org`
		A	205.251.197.125^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1405.awsdns-47.org`
NS	`ns-1630.awsdns-11.co.uk`
		A	2600:9000:5306:5e00::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1630.awsdns-11.co.uk`
		A	205.251.198.94^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1630.awsdns-11.co.uk`
NS	`ns-461.awsdns-57.com`
		A	2600:9000:5301:cd00::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-461.awsdns-57.com`
		A	205.251.193.205^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-461.awsdns-57.com`
SOA	`ns-827.awsdns-39.net`awsdns-hostmaster@amazon.com serial=1

`cisco.com`

	DNSSEC	⚠️ Not signed
	A	2001:420:1101:1::185^{🇺🇸 ASNTTCISCO2001:420:1100::/41 170 West Tasman Drive San Jose CA 95134 United States}
	A	72.163.4.185^{🇺🇸 ASNTTCISCO72.163.4.0/24 170 West Tasman Drive San Jose CA 95134 United States}
	NS	`ns1.cisco.com` ⭐
	NS	`a28-64.akam.net` ⚠️ Not in parent delegation
	NS	`a3-64.akam.net` ⚠️ Not in parent delegation
	NS	`ns2.cisco.com`
	NS	`ns3.cisco.com`
	MX	`alln-mx-01.cisco.com` ⭐
	MX	`rcdn-mx-01.cisco.com`⁽²⁰⁾
	MX	`aer-mx-01.cisco.com`⁽³⁰⁾
	TXT	`ms-domain-verification=e0289fac-4a94-41df-b2b0-794347e490b7`
	TXT	`twilio-domain-verification=3b5f92478e8c38980a265e599e1538c8`
	TXT	`QuoVadis=94d4ae74-ecd5-4a33-975e-a0d7f546c801`
	TXT	`postman-domain-verification=bac0835520fcf3b408c07c584b3575452de5930d08a942cc0...`
	TXT	`google-site-verification=lW5eqPMJI4VrLc28YW-JBkqA-FDNVnhFCXQVDvFqZTo`
	TXT	`flexera-domain-verification-oxonqwdadtkprrcn`
	TXT	`docusign=5e18de8e-36d0-4a8e-8e88-b7803423fa2f`
	TXT	`docusign=95052c5f-a421-4594-9227-02ad2d86dfbe`
	TXT	`pendo-domain-verification=c9796502-c914-4e50-892d-e426f2ac68e9`
	TXT	`workplace-domain-verification=Uhv7QPQ22nbuD3vG0jspf7R6LruYoS`
	TXT	`MS=ms35724259`
	TXT	`pendo-domain-verification=Ad800_b0VJCaE7Ued9Ug3pIQ_V4`
	TXT	`jamf-site-verification=0mwRCzzRvk_HiKjmiqR3Lw`
	TXT	`notion-domain-verification=7sz4S3LLtNIHZpYsgTTgOcRLlLrJ5JrmIgVcdRtGi1X`
	TXT	`SFMC-o7HX74BQ79k7glpt_qjlF2vmZO9DpqLtYxKLwg87`
	TXT	`atlassian-domain-verification=UwP1ncfiphlFs+wRx8wIBSXDScwNL7Jrw7tq2rnYz3+9T5+...`
	TXT	`airtable-verification=c0b5bd3f3db736f775f0dbe4e103cdea`
	TXT	`amazonses:7LyiKZmpuGja4+KbA4xX3lN69yajYKLkHH4QJcWnuwo=`
	TXT	`_v91byogpqpkdt9giz9d119ldke45oos`
	TXT	`v=spf1 redirect=spfa._spf.cisco.com`
	TXT	`airtable-verification=18787f2dc47697bb547e871772aba0be`
	TXT	`duo_sso_verification=6Q7pJwSZ3damWHBcB8TNd9I5oduLRAFDDhip2pTFaa3QoIZtZnCgzjyZ...`
	TXT	`atlassian-domain-verification=Gt2demeKDLmtNc9kPZhaAHFA37DEIcmFGUd6LARvB4yjLG7...`
	TXT	`stripe-verification=2B4F3B35976CFB93CA884A90BF3E0A8873EAC7C5AFD06D7047E87B794...`
	TXT	`atlassian-domain-verification=2ldosmg0o2Mhpyok1OISaSGygWU9zk6fLLWdoczXtHap9lu...`
	TXT	`ZOOM_verify_Gf6CaEdJ5aKGvjcUrZRkiA`
	TXT	`google-site-verification=r-K1CIdXkgRWxZstUHtVyM2UfwflnGgr4AR9_Qhk28Q`
	TXT	`fastly-domain-delegation-e9a758d22183504af2d5ab4d9a9853da-20210127`
	TXT	`apple-domain-verification=qOInipPgso3W8cmK`
	TXT	`duo_sso_verification=sKMGaTln2vmQuKwaE4hKtTEY1UYn2JzAaxSZzGjkgJrKuZChN344mhIp...`
	TXT	`airtable-verification=4114c0f710cfc430d841e55ed7ed920d`
	TXT	`yahoo-verification-key=2B33D2zyxdBOxUw/abowAuwQ2pdtznP6ULDfQC3ag2g=`
	TXT	`airtable-verification=606530d538d1833c5fc724117ca5409a`
	TXT	`duo_sso_verification=pG21Oj5OPCxRPsWXsfbauWT9oua82cKtYUPAmsQvovKNq3xqWEcsEMEA...`
	TXT	`fastly-domain-delegation-w049tcm0w48ds-341317-20210209`
	TXT	`facebook-domain-verification=qr2nigspzrpa96j1nd9criovuuwino`
	TXT	`fastly-domain-delegation-z9slsbDdX0-368365-2021-05-14`
	TXT	`jetbrains-domain-verification=e9mcf886rjng68x4qu59h22ef`
	TXT	`docker-verification=4c56633a-274e-4858-88a2-2aeceffcfd66`
	TXT	`elevenlabs=X_8Xi7v2hC20yVbziZuWtkapfDzUtNK3BogfZKVe9gY`
	TXT	`amazonses:mX+ylQj+fJAfh9pr03yIR7YvjKZ1bOo5ABegqM/5pvI=`
	TXT	`google-site-verification=Vc0Pir22m1u9yw5HjXf6TYO6rlAI9EY8IVKUma-OqDY`
	TXT	`mixpanel-domain-verify=2c6cb1aa-a3fb-44b9-ad10-d6b744109963`
	TXT	`wiz-domain-verification=af241e6396696eedf1b361891435f6b21bdebb5621941d9927929...`
	TXT	`airtable-verification=8cd8b684d3d85964f2769dcb89944501`
	TXT	`google-site-verification=9MlQU9MMQ1jHLMUkONKe6QzZ-ZIGRv0BCD1_rY1Zdmc`
	TXT	`airtable-verification=d95d028f039252314cb7507fb88e4317`
	TXT	`anthropic-domain-verification-5dyq28=xkpw44itymPv0HXOvUdry99zb`
	TXT	`flexera-domain-verification-nsbtshbvpbsmbnzh`
	TXT	`atlassian-domain-verification=672RcADvt8BPqsb9gCN2ZC5DoTAhUT8abC1blYKQxi/MHMa...`
	TXT	`cursor-domain-verification-evn8nj=Ml5OeQYe3sBg8uZOIeRrJgCO7`
	TXT	`amazonses:QbUv5pPHGQxRy1vKA0J7Y/biE9oR6MTxOTI1bZIfjsw=`
	TXT	`pendo-domain-verification=5995ba9c-9bf8-43d8-9e5a-309856760011`
	TXT	`pendo-domain-verification=c9d2fba1-7d94-4cf9-a6fb-310883c8bb15`
	TXT	`c900335b8b825859b51473b9943a3880ae795df47426483b0a67630377a902f5`
	TXT	`profound-domain-verification-4tbqdv=dgW9PRoomrumTvr2gfRW4H3B1`
	TXT	`airtable-verification=d886631ce96b77ba775f9bddab44df92`
	TXT	`926723159-3188410`
	TXT	`fastly-domain-delegation-im0VCGY5X0axEEmhXJb2-347911-20210310`
	TXT	`duo_sso_verification=AxenLdoqIXzjl2RJzE1BlOfkawDbDFlnbyvjAt8vcjKHBkvYwEMySDRk...`
	TXT	`twilio-domain-verification=268434bd6a91bdd8d3bb5e6cffeeace7`
	TXT	`stripe-verification=8e54fae7680b23aad6d5e3417be73a043f7e45cd2767272dbe0c9c6ea...`
	TXT	`facebook-domain-verification=1zoxo8z7t013gpruxmhc8dkerq47vh`
	TXT	`google-site-verification=qPS9ZkoQ-Og1rBrM1_N7z-tNJNy2BVxE8lw6SB2iFdk`
	TXT	`duo_sso_verification=IYdVUIrb2L95JVejSXV3hfsJVDZolQKKOPBztlD6TIgfCRSKeMuf8Wgb...`
	TXT	`notion-domain-verification=IsKmFIvIIP8RUQNn4ZGQjzuCdZnI7TY7xcIYb65QQE8`
	TXT	`google-site-verification=DN8r8LEcNiPYD95x3VnUM7Q6BH2H3390qvdIy4QjpvU`
	TXT	`intercom-domain-validation=8806e2f9-7626-4d9e-ae4d-2d655028629a`
	TXT	`hubspot-domain-verification=NDQzNGY2ZWEtZTY0ZC00ZDQyLWI4YzctOGRkNDVjNTQ4YTAx`
	TXT	`cloudflare_dashboard_sso=f60a7d128e406b8d9dd4103dd3554f6b`
	TXT	`google-site-verification=WmdDuSXl3PMb-48qcY6VUbW9kzNPe46zn9uDwgB2wX0`
	TXT	`miro-verification=53bf5ccd47cb6239fe5cf14c3b328050dd5679ac`
	TXT	`google-site-verification=V3t2K3dvr9fcd1YWwwanSmebEOO_UNTP06HR2_gUO5M`
	TXT	`identrust_validation=IGfVhawoLyaH5CKT49RKObpqHgYyXRvd691dO1oCEOfh`
	TXT	`h1-domain-verification=rix5vuxntVpma4rTL2DbE3FDrrPjedhnRaqaHvghyod3egmZ`
	TXT	`asv=ac90e11808e87cfbf8768e69819b1aca`
	TXT	`stripe-verification=0BAD851A6A7ACC4A12DDCE03460CCEFAC86320A8494FDCCED35F71EE2...`
	TXT	`mZvHszGlmDhvPOUKL+6JMiw/VtckyOMKjcw1PLcjYowxM2PVLX2xG0ZSgdHRm8HXfaaGR2pMvhIrB...`
	TXT	`sending_domain731003=25e34fadea88da7e64f0fab1e32d094f1f1e0fb2b97622deac2521f7...`
	TXT	`adobe-aem-verification=www-devint-cloud.cisco.com/24859/366173/9418f2a2-ef45-...`
	TXT	`adobe-idp-site-verification=c900335b8b825859b51473b9943a3880ae795df47426483b0...`
	TXT	`sending_domain1067842=8806a83586b0389c05457f8b2f06e4859b3f1b0d6bad52e5fee552b...`
	TXT	`OSSRH-97236`
	TXT	`atlassian-domain-verification=7JYRlY9ijBijTJ0YS5a8/58DU7OfKAHMYRufcy0TC57j2mN...`
	TXT	`atlassian-domain-verification=AYTzL6wSVsW0IdyQp7gwv6lwtHdpMATnb8QriqyJ0niAaZc...`
	TXT	`airtable-verification=8bf444fd0fad14a3aae2681cb7d68641`
	TXT	`bfefecbd-d5df-4b3a-b0dd-54bf5c72e698`
	TXT	`adobe-aem-verification=www-idev-cloud.cisco.com/24859/366204/1b990ef7-ff88-49...`
	SOA	`ns1.cisco.com`postmaster@cisco.com serial=1260345

WOT: SAFE (92/100)
rank #308 globally
rank #197 in the tld

cisco.com

cisco.comis the official corporate website of Cisco Systems, Inc., a major multinational technology conglomerate that designs and sells networking hardware, software, and telecommunications equipment. It is one of the oldest registered domains on the internet.

Key facts

Owner / operator: Cisco Systems, Inc.
TLD:.com— gTLD
Primary purpose: corporate website
Status: active

History

Year	Event
1987	The domain name`cisco.com`is registered by Cisco Systems on May 14.
1992	Cisco launches "Cisco Information Online" (CIO), its first online service (via Telnet and modem), providing text-based technical resources.
1996	Cisco introduces e-commerce features on "Cisco Connection Online" (CCO), allowing customers to configure and purchase products directly on`cisco.com`.

Semrush Rank:#1,452 Keywords:870,973 Traffic:1,832,699/mo
WOT: SAFE (92/100)
📈 Tranco rank: #249

Cisco Systems is a multinational technology company founded in 1984, dominating the network infrastructure market. Cisco's routers and switches form the backbone of the internet and enterprise networks globally, with annual revenue exceeding $50 billion.

Cisco's portfolio includes networking hardware, security solutions, collaboration tools (Webex), and cloud services. The company has made numerous acquisitions including Webex, AppDynamics, and Duo Security.

Cisco's infrastructure supports massive global operations including Webex video conferencing serving millions of meetings daily.

DNS for cisco.com uses a hybrid setup with multiple providers for global resilience appropriate for a networking company.

Subdomains

api.security.cisco.com

cross-app-navigator.security.cisco.com

manage.security.cisco.com

us.security.cisco.com

securex-sdk.security.cisco.com

scc-notifications.security.cisco.com

provisioning.security.cisco.com

platform.security.cisco.com

ai-assistant.security.cisco.com

brand-assets.security.cisco.com

sign-on.security.cisco.com

cpc.security.cisco.com

sso-apps.security.cisco.com

test.security.cisco.com

sign-on-api.security.cisco.com

xdr-ui-ribbon.security.cisco.com

okta-hooks.security.cisco.com

scso-cdn.security.cisco.com

eu.security.cisco.com

apps.security.cisco.com

apjc.security.cisco.com

aidefense.security.cisco.com

Same first word

security.com.pk

security.it

security.jp

security.design

security.support

security.net.za

security.run

security.capital

security.dog

security.gov.vc

security.go.ug

security.casa

security.podzone.net

security.gives

security.ge

security.nyc

security.at

security.biz

security.money

security.institute

security.place

security.events

security.eu.com

security.se

security.no

security.tj

security.com.au

security.kg

security.click

security.house

security.fi

security.gr

security.ntt

security.show

security.express

security.cash

security.pet

security.tips

security.fr

security.ro

security.club

security.neustar

security.network

security.ci

security.catholic.edu.au

security.insure

security.ms

security.gy

security.tax

security.com.na

security.video

security.co.ke

security.com

security.net

security.mx

security.de

security.info

security.sk

security.business

security.gov.ge

security.kz

security.in

security.ee

security.school

security.land

security.net.sa

security.properties

security.finance

security.guide

security.group

security.gold

security.fail

security.marketing

security.plus

security.is

security.com.se

security.cz

security.management

security.ch

security.azure

security.my

security.dp.ua

security.bio

security.codes

security.edu.cn

security.blue

security.krd

security.co.at

security.com.py

security.app

security.ltd

security.re.kr

security.technology

security.org.my

security.co.nz

security.ma

security.nl

security.bid

security.vision

security.holdings

security.target

security.saarland

security.bg

security.pk

security.ca

security.do

security.gov.uk

security.direct

security.org.au

security.gs

security.cl

security.pl

security.watch

security.nic.in

security.md

security.fm

security.gripe

security.cx

security.ai

security.cn

security.exchange

security.az

security.pe.kr

security.cisco

security.plumbing

security.lighting

security.enterprises

security.training

security

security.red

security.org.tw

security.bz

security.education

security.associates

security.co.za

security.wtf

security.me.uk

security.go.th

security.lv

security.ly

security.appspot.com

security.biz.pk

security.ml

security.govt.nz

security.ky

security.ua

security.lutsk.ua

security.agency

security.co.th

security.bet

security.hu

security.life

security.solutions

security.s3.amazonaws.com

security.nu

security.edgekey.net

security.org

security.awsapps.com

security.world

security.edu.pl

security.github.io

security.sc

Similar names

cityuser.it

rusecity.com

ysecurit.com

cityuser.ru

securtiy.com

secuirty.org

ytiruces.org

cruiseyt.com

cerityus.com

surecity.com

cityuser.org

surecity.co.uk

DNS History

91 records (8 active, 83 former)

●NSns-1405.awsdns-47.org2021-06-21 → 2026-08-08 · 2 obs

● 2021-06-21 16:01:14
● 2026-08-08 04:51:32

●NSns-1630.awsdns-11.co.uk2021-06-21 → 2026-08-08 · 2 obs

● 2021-06-21 16:01:14
● 2026-08-08 04:51:32

●NSns-461.awsdns-57.com2021-06-21 → 2026-08-08 · 2 obs

● 2021-06-21 16:01:14
● 2026-08-08 04:51:32

●NSns-827.awsdns-39.net2021-06-21 → 2026-08-08 · 2 obs

● 2021-06-21 16:01:14
● 2026-08-08 04:51:32

○A108.139.119.1002026-04-11 → 2026-05-17 · 11 obs

○ 2026-04-10 22:59:24
● 2026-04-11 05:57:46
○ 2026-04-11 08:50:42
○ 2026-04-11 12:13:02
● 2026-04-11 13:17:28
● 2026-04-11 13:48:44
○ 2026-04-12 00:11:10
○ 2026-05-17 12:51:46
● 2026-05-17 16:59:22
○ 2026-05-17 17:59:10
○ 2026-08-08 04:51:32

○A108.139.119.212026-04-11 → 2026-05-17 · 11 obs

○A108.139.119.562026-04-11 → 2026-05-17 · 11 obs

○A108.139.119.862026-04-11 → 2026-05-17 · 11 obs

○A13.224.252.1002026-04-29 → 2026-08-07 · 53 obs

○ 2026-04-28 15:15:08
● 2026-04-29 03:52:00
● 2026-04-29 04:51:52
○ 2026-04-29 11:40:02
○ 2026-05-21 17:59:40
● 2026-05-22 11:16:10
○ 2026-05-23 19:57:12
○ 2026-05-27 21:27:26
● 2026-05-29 19:50:48
○ 2026-05-31 05:03:24
● 2026-05-31 16:21:28
○ 2026-06-01 14:36:42
○ 2026-06-08 10:19:04
● 2026-06-08 20:29:38
● 2026-06-09 20:24:06
○ 2026-06-10 18:47:36
○ 2026-06-15 10:40:02
● 2026-06-15 14:57:46
● 2026-06-15 15:41:42
○ 2026-06-15 18:58:46
● 2026-06-30 22:46:02
○ 2026-07-01 00:43:36
● 2026-07-01 11:00:02
○ 2026-07-01 21:28:46
● 2026-07-02 07:25:14
○ 2026-07-03 04:59:12
● 2026-07-03 20:10:46
○ 2026-07-04 04:45:50
● 2026-07-05 00:54:48
○ 2026-07-08 01:28:52
● 2026-07-08 15:34:52
○ 2026-07-09 00:11:32
● 2026-07-09 12:10:00
○ 2026-07-09 13:20:24
● 2026-07-09 14:14:50
○ 2026-07-09 15:45:54
● 2026-07-09 23:27:04
○ 2026-07-10 06:56:38
● 2026-07-11 05:19:56
○ 2026-07-13 01:15:44
● 2026-07-17 21:09:06
○ 2026-07-20 01:57:30
● 2026-07-20 05:51:18
○ 2026-07-20 14:49:50
● 2026-07-21 16:02:44
○ 2026-07-22 03:37:32
● 2026-08-02 00:19:42
○ 2026-08-04 09:23:10
● 2026-08-06 11:38:34
○ 2026-08-07 15:59:16
● 2026-08-07 16:52:12
○ 2026-08-08 04:51:28
○ 2026-08-08 04:51:32

○A13.224.252.532026-04-29 → 2026-08-07 · 53 obs

○A13.224.252.872026-04-29 → 2026-08-07 · 53 obs

○A13.224.252.932026-04-29 → 2026-08-07 · 53 obs

○A13.225.107.1092026-03-28 → 2026-04-28 · 21 obs

○ 2026-03-27 21:30:06
● 2026-03-28 21:07:22
● 2026-03-29 10:04:02
○ 2026-03-29 15:32:20
● 2026-03-29 21:50:42
○ 2026-03-30 11:58:06
○ 2026-03-30 21:28:46
● 2026-03-31 03:15:52
● 2026-04-01 13:43:08
○ 2026-04-01 17:23:34
○ 2026-04-02 07:31:34
● 2026-04-02 10:53:56
○ 2026-04-03 02:06:52
○ 2026-04-11 13:48:44
● 2026-04-12 00:11:10
● 2026-04-12 15:57:46
○ 2026-04-13 01:03:38
○ 2026-04-28 13:58:48
● 2026-04-28 14:29:18
○ 2026-04-28 15:15:08
○ 2026-08-08 04:51:32

○A13.225.107.1212026-03-28 → 2026-04-28 · 21 obs

○A13.225.107.762026-03-28 → 2026-04-28 · 21 obs

○A13.225.107.862026-03-28 → 2026-04-28 · 21 obs

○A13.227.87.1042026-05-20 → 2026-07-01 · 24 obs

○ 2026-05-20 09:16:24
● 2026-05-20 10:09:32
○ 2026-05-20 13:23:18
● 2026-05-20 16:42:28
● 2026-05-21 17:59:40
○ 2026-05-22 02:57:40
○ 2026-05-22 11:16:10
● 2026-05-22 21:34:00
○ 2026-05-23 09:03:26
● 2026-05-23 19:57:12
● 2026-05-24 10:49:46
○ 2026-05-25 01:14:16
● 2026-05-25 13:16:10
○ 2026-05-26 15:19:06
● 2026-05-26 22:07:56
○ 2026-05-27 13:55:26
● 2026-05-27 20:25:12
● 2026-05-27 21:27:26
○ 2026-05-29 19:50:48
● 2026-06-30 18:00:50
○ 2026-06-30 22:46:02
● 2026-07-01 00:43:36
○ 2026-07-01 11:00:02
○ 2026-08-08 04:51:32

○A13.227.87.312026-05-20 → 2026-07-01 · 24 obs

○A13.227.87.562026-05-20 → 2026-07-01 · 24 obs

○A13.227.87.702026-05-20 → 2026-07-01 · 24 obs

○A13.33.235.1092026-03-22 → 2026-07-15 · 21 obs

○ 2026-03-22 12:28:34
● 2026-03-22 14:47:00
○ 2026-03-23 02:24:24
○ 2026-03-24 02:22:56
● 2026-03-24 14:50:28
○ 2026-03-24 20:05:16
○ 2026-03-25 01:04:38
● 2026-03-25 03:27:38
○ 2026-03-25 06:40:26
● 2026-03-25 13:28:46
○ 2026-03-26 03:37:52
● 2026-03-26 04:31:30
○ 2026-03-26 08:04:14
● 2026-03-26 11:25:30
● 2026-03-26 14:06:40
○ 2026-03-27 00:33:04
● 2026-07-13 01:15:44
○ 2026-07-13 02:32:06
● 2026-07-15 23:26:48
○ 2026-07-16 04:23:16
○ 2026-08-08 04:51:32

○A13.33.235.542026-03-22 → 2026-07-15 · 21 obs

○A13.33.235.772026-03-22 → 2026-07-15 · 21 obs

○A13.33.235.812026-03-22 → 2026-07-15 · 21 obs

○A13.35.107.292026-06-26 → 2026-07-31 · 36 obs

○ 2026-06-26 11:24:50
● 2026-06-26 13:37:36
○ 2026-06-26 14:39:06
● 2026-07-13 03:19:52
○ 2026-07-14 08:53:36
● 2026-07-14 15:20:48
○ 2026-07-15 23:26:48
● 2026-07-16 04:23:16
○ 2026-07-17 13:51:12
● 2026-07-17 15:17:14
○ 2026-07-17 21:09:06
● 2026-07-20 02:42:44
○ 2026-07-20 05:51:18
● 2026-07-20 14:49:50
○ 2026-07-21 11:20:48
● 2026-07-21 13:04:28
○ 2026-07-21 16:02:44
● 2026-07-22 05:05:42
○ 2026-07-24 05:58:40
● 2026-07-24 07:34:26
○ 2026-07-24 08:52:10
● 2026-07-24 09:53:30
○ 2026-07-24 11:36:08
● 2026-07-26 04:15:52
○ 2026-07-26 11:31:38
● 2026-07-26 12:13:34
○ 2026-07-26 21:39:40
● 2026-07-27 18:52:48
○ 2026-07-28 16:02:38
● 2026-07-29 21:26:58
○ 2026-07-30 00:26:48
● 2026-07-30 03:02:56
○ 2026-07-30 16:40:14
● 2026-07-31 07:21:10
○ 2026-08-02 00:19:42
○ 2026-08-08 04:51:32

○A13.35.107.332026-06-26 → 2026-07-31 · 36 obs

○A13.35.107.402026-06-26 → 2026-07-31 · 36 obs

○A13.35.107.92026-06-26 → 2026-07-31 · 36 obs

○A13.35.20.1042026-05-27 → 2026-06-03 · 14 obs

○ 2026-05-26 22:07:56
● 2026-05-27 13:55:26
○ 2026-05-27 20:25:12
○ 2026-05-31 16:21:28
● 2026-06-01 14:36:42
○ 2026-06-01 20:14:58
○ 2026-06-02 07:47:40
● 2026-06-02 08:21:06
○ 2026-06-02 11:11:40
○ 2026-06-03 09:01:28
● 2026-06-03 10:05:04
● 2026-06-03 12:12:44
○ 2026-06-03 15:59:10
○ 2026-08-08 04:51:32

○A13.35.20.1122026-05-27 → 2026-06-03 · 14 obs

○A13.35.20.282026-05-27 → 2026-06-03 · 14 obs

○A13.35.20.512026-05-27 → 2026-06-03 · 14 obs

○A18.160.46.1002026-02-19 → 2026-08-06 · 53 obs

○ 2026-02-16 01:58:10
○ 2026-02-18 22:58:52
● 2026-02-19 00:10:12
● 2026-02-19 05:27:48
○ 2026-02-19 21:48:08
● 2026-02-20 08:56:32
● 2026-02-21 00:12:08
○ 2026-02-21 10:11:32
○ 2026-05-24 10:49:46
● 2026-05-25 01:14:16
○ 2026-05-25 13:16:10
● 2026-05-26 15:19:06
○ 2026-05-26 19:12:50
○ 2026-06-18 01:34:08
● 2026-06-18 15:56:28
○ 2026-06-19 06:39:10
● 2026-06-20 21:08:06
○ 2026-06-20 23:57:04
● 2026-06-21 14:25:42
○ 2026-06-21 16:11:12
● 2026-06-23 19:08:02
○ 2026-06-24 07:47:52
● 2026-06-24 22:59:12
○ 2026-06-25 17:26:58
● 2026-06-26 00:27:46
○ 2026-06-26 03:40:44
● 2026-06-26 07:31:16
○ 2026-06-26 11:24:50
● 2026-06-29 02:36:48
○ 2026-06-29 06:31:56
● 2026-06-30 09:40:48
○ 2026-06-30 11:31:02
● 2026-07-01 21:28:46
○ 2026-07-02 07:25:14
● 2026-07-03 12:19:34
○ 2026-07-03 20:10:46
● 2026-07-04 04:45:50
○ 2026-07-04 09:57:30
● 2026-07-04 10:30:44
○ 2026-07-04 20:33:00
● 2026-07-04 22:10:34
○ 2026-07-05 00:54:48
● 2026-07-08 01:28:52
○ 2026-07-08 08:59:30
● 2026-07-09 18:28:20
○ 2026-07-09 23:27:04
● 2026-07-10 08:23:56
○ 2026-07-10 18:32:48
● 2026-08-04 21:58:48
○ 2026-08-05 23:23:46
● 2026-08-06 09:23:46
○ 2026-08-06 11:38:34
○ 2026-08-08 04:51:32

○A18.160.46.602026-02-19 → 2026-08-06 · 53 obs

○A18.160.46.712026-02-19 → 2026-08-06 · 53 obs

○A18.160.46.912026-02-19 → 2026-08-06 · 53 obs

○A18.161.205.1102026-04-01 → 2026-07-27 · 31 obs

○ 2026-04-01 17:23:34
● 2026-04-01 20:57:48
○ 2026-04-02 02:23:16
○ 2026-04-10 15:57:06
● 2026-04-10 19:58:32
○ 2026-04-10 22:59:24
○ 2026-05-03 00:28:26
● 2026-05-03 06:35:14
○ 2026-05-03 12:52:46
○ 2026-05-06 13:47:50
● 2026-05-06 16:32:04
○ 2026-05-06 23:04:28
○ 2026-05-09 10:25:18
● 2026-05-09 14:15:06
○ 2026-05-09 22:08:44
○ 2026-05-19 02:38:24
● 2026-05-19 04:11:30
○ 2026-05-19 07:08:20
● 2026-07-03 04:59:12
○ 2026-07-03 05:40:14
● 2026-07-14 08:53:36
○ 2026-07-14 15:20:48
● 2026-07-24 11:36:08
○ 2026-07-25 20:52:56
● 2026-07-26 11:31:38
○ 2026-07-26 12:13:34
● 2026-07-27 04:10:46
○ 2026-07-27 07:17:34
● 2026-07-27 17:47:10
○ 2026-07-27 18:52:48
○ 2026-08-08 04:51:32

○A18.161.205.132026-04-01 → 2026-07-27 · 31 obs

○A18.161.205.392026-04-01 → 2026-07-27 · 31 obs

○A18.161.205.422026-04-01 → 2026-07-27 · 31 obs

○A18.165.242.1082026-02-16 → 2026-06-30 · 46 obs

○ 2021-06-21 16:01:14
● 2026-02-16 01:58:10
● 2026-02-17 04:58:32
○ 2026-02-17 11:31:22
● 2026-02-18 16:29:54
● 2026-03-26 03:37:52
○ 2026-03-27 03:32:12
○ 2026-04-03 00:16:00
● 2026-04-04 00:04:40
○ 2026-04-10 08:56:28
● 2026-04-17 14:28:14
● 2026-05-19 07:08:20
○ 2026-05-19 11:27:26
○ 2026-06-09 20:24:06
● 2026-06-10 18:47:36
● 2026-06-18 01:34:08
○ 2026-06-18 15:56:28
● 2026-06-19 06:39:10
○ 2026-06-20 21:08:06
● 2026-06-21 10:35:40
○ 2026-06-21 13:37:40
● 2026-06-21 16:11:12
○ 2026-06-22 16:58:50
● 2026-06-22 22:49:24
○ 2026-06-23 02:03:12
● 2026-06-23 12:06:22
○ 2026-06-23 19:08:02
● 2026-06-24 07:47:52
○ 2026-06-24 17:52:44
● 2026-06-25 22:35:24
○ 2026-06-26 00:27:46
● 2026-06-26 03:40:44
○ 2026-06-26 06:19:10
● 2026-06-26 14:39:06
○ 2026-06-26 19:09:20
● 2026-06-27 01:40:42
○ 2026-06-27 05:09:20
● 2026-06-27 09:59:48
○ 2026-06-27 15:56:34
● 2026-06-28 06:33:08
○ 2026-06-29 00:52:40
● 2026-06-29 08:37:28
○ 2026-06-30 09:40:48
● 2026-06-30 11:31:02
○ 2026-06-30 18:00:50
○ 2026-08-08 04:51:32

○A18.165.242.282026-02-16 → 2026-06-30 · 46 obs

○A18.165.242.702026-02-16 → 2026-06-30 · 46 obs

○A18.165.242.852026-02-16 → 2026-06-30 · 46 obs

○A18.239.168.192026-04-22 → 2026-05-19 · 20 obs

○ 2026-04-20 21:53:54
● 2026-04-22 18:02:04
○ 2026-04-23 01:19:50
○ 2026-04-23 17:25:24
● 2026-04-23 22:53:48
○ 2026-04-24 06:27:40
○ 2026-05-05 19:00:36
● 2026-05-05 23:49:00
○ 2026-05-06 13:47:50
○ 2026-05-09 23:53:06
● 2026-05-10 03:38:16
○ 2026-05-10 17:33:10
○ 2026-05-12 07:43:42
● 2026-05-12 16:14:12
● 2026-05-13 02:46:18
○ 2026-05-13 21:24:14
○ 2026-05-19 07:08:20
● 2026-05-19 11:27:26
○ 2026-05-20 09:16:24
○ 2026-08-08 04:51:32

○A18.239.168.312026-04-22 → 2026-05-19 · 20 obs

○A18.239.168.672026-04-22 → 2026-05-19 · 20 obs

○A18.239.168.912026-04-22 → 2026-05-19 · 20 obs

○A18.64.155.1192026-03-30 → 2026-07-30 · 49 obs

○ 2026-03-30 11:58:06
● 2026-03-30 21:28:46
○ 2026-03-31 03:15:52
○ 2026-04-01 00:50:26
● 2026-04-01 02:21:58
○ 2026-04-01 13:43:08
○ 2026-04-01 20:57:48
● 2026-04-02 02:23:16
○ 2026-04-02 10:53:56
○ 2026-04-04 00:04:40
● 2026-04-04 19:20:36
○ 2026-04-05 00:46:56
○ 2026-04-06 14:58:50
● 2026-04-06 17:58:30
○ 2026-04-07 00:29:36
○ 2026-04-07 12:44:04
● 2026-04-07 14:53:54
○ 2026-04-07 17:03:04
● 2026-06-20 23:57:04
○ 2026-06-21 10:35:40
● 2026-06-22 16:58:50
○ 2026-06-22 22:49:24
● 2026-06-23 02:03:12
○ 2026-06-23 12:06:22
● 2026-06-24 17:52:44
○ 2026-06-24 22:59:12
● 2026-06-25 17:26:58
○ 2026-06-25 22:35:24
● 2026-06-26 06:19:10
○ 2026-06-26 07:31:16
● 2026-06-26 11:24:50
○ 2026-06-26 13:37:36
● 2026-06-26 19:09:20
○ 2026-06-27 01:40:42
● 2026-06-27 05:09:20
○ 2026-06-27 09:59:48
● 2026-06-27 15:56:34
○ 2026-06-28 06:33:08
● 2026-06-29 00:52:40
○ 2026-06-29 02:36:48
● 2026-06-29 06:31:56
○ 2026-06-29 08:37:28
● 2026-07-29 07:37:40
○ 2026-07-29 21:26:58
● 2026-07-30 00:26:48
○ 2026-07-30 03:02:56
● 2026-07-30 16:40:14
○ 2026-07-31 06:02:14
○ 2026-08-08 04:51:32

○A18.64.155.192026-03-30 → 2026-07-30 · 49 obs

○A18.64.155.662026-03-30 → 2026-07-30 · 49 obs

○A18.64.155.962026-03-30 → 2026-07-30 · 49 obs

○A18.65.25.1232026-02-17 → 2026-08-04 · 58 obs

○ 2026-02-17 04:58:32
● 2026-02-17 11:31:22
○ 2026-02-18 16:29:54
● 2026-02-18 20:02:36
○ 2026-02-18 22:58:52
○ 2026-03-01 07:18:06
● 2026-03-01 08:58:26
○ 2026-03-02 02:53:04
● 2026-03-02 19:01:00
○ 2026-03-03 02:13:00
○ 2026-03-07 04:11:42
● 2026-03-07 11:05:00
○ 2026-03-07 23:36:00
○ 2026-03-09 23:56:30
● 2026-03-10 10:01:36
○ 2026-03-11 03:59:50
○ 2026-03-21 13:46:46
● 2026-03-21 14:30:02
○ 2026-03-22 01:02:12
● 2026-07-03 05:40:14
○ 2026-07-03 09:48:30
● 2026-07-03 10:31:00
○ 2026-07-03 12:19:34
● 2026-07-04 09:57:30
○ 2026-07-04 10:30:44
● 2026-07-04 20:33:00
○ 2026-07-04 22:10:34
● 2026-07-08 08:59:30
○ 2026-07-08 15:34:52
● 2026-07-09 00:11:32
○ 2026-07-09 12:10:00
● 2026-07-09 13:20:24
○ 2026-07-09 14:14:50
● 2026-07-09 15:45:54
○ 2026-07-09 18:28:20
● 2026-07-10 06:56:38
○ 2026-07-10 08:23:56
● 2026-07-13 02:32:06
○ 2026-07-13 03:19:52
● 2026-07-17 13:51:12
○ 2026-07-17 15:17:14
● 2026-07-20 01:57:30
○ 2026-07-20 02:42:44
● 2026-07-21 11:20:48
○ 2026-07-21 13:04:28
● 2026-07-22 03:37:32
○ 2026-07-22 05:05:42
● 2026-07-24 05:58:40
○ 2026-07-24 07:34:26
● 2026-07-24 08:52:10
○ 2026-07-24 09:53:30
● 2026-07-31 06:02:14
○ 2026-07-31 07:21:10
● 2026-08-04 09:23:10
○ 2026-08-04 12:43:46
● 2026-08-04 15:18:50
○ 2026-08-04 16:06:52
○ 2026-08-08 04:51:32

○A18.65.25.42026-02-17 → 2026-08-04 · 58 obs

○A18.65.25.462026-02-17 → 2026-08-04 · 58 obs

○A18.65.25.742026-02-17 → 2026-08-04 · 58 obs

○A23.20.72.1782021-06-21 → 2021-06-21 · 3 obs

● 2021-06-21 16:01:14
○ 2026-02-16 01:58:10
○ 2026-08-08 04:51:32

○A3.165.113.192026-07-25 → 2026-07-26 · 6 obs

○ 2026-07-24 11:36:08
● 2026-07-25 20:52:56
○ 2026-07-26 04:15:52
● 2026-07-26 21:39:40
○ 2026-07-27 04:10:46
○ 2026-08-08 04:51:32

○A3.165.113.32026-07-25 → 2026-07-26 · 6 obs

○ 2026-07-24 11:36:08
● 2026-07-25 20:52:56
○ 2026-07-26 04:15:52
● 2026-07-26 21:39:40
○ 2026-07-27 04:10:46
○ 2026-08-08 04:51:32

○A3.165.113.352026-07-25 → 2026-07-26 · 6 obs

○ 2026-07-24 11:36:08
● 2026-07-25 20:52:56
○ 2026-07-26 04:15:52
● 2026-07-26 21:39:40
○ 2026-07-27 04:10:46
○ 2026-08-08 04:51:32

○A3.165.113.832026-07-25 → 2026-07-26 · 6 obs

○ 2026-07-24 11:36:08
● 2026-07-25 20:52:56
○ 2026-07-26 04:15:52
● 2026-07-26 21:39:40
○ 2026-07-27 04:10:46
○ 2026-08-08 04:51:32

○A3.166.135.1112026-06-17 → 2026-07-28 · 11 obs

○ 2026-06-15 18:58:46
● 2026-06-17 06:45:00
● 2026-06-17 08:20:04
○ 2026-06-17 12:59:54
● 2026-06-21 13:37:40
○ 2026-06-21 14:25:42
● 2026-07-27 07:17:34
○ 2026-07-27 17:47:10
● 2026-07-28 16:02:38
○ 2026-07-29 07:37:40
○ 2026-08-08 04:51:32

○A3.166.135.1172026-06-17 → 2026-07-28 · 11 obs

○A3.166.135.122026-06-17 → 2026-07-28 · 11 obs

○A3.166.135.1252026-06-17 → 2026-07-28 · 11 obs

○A3.170.185.1232026-05-29 → 2026-06-08 · 21 obs

○ 2026-05-29 19:50:48
● 2026-05-29 23:42:26
○ 2026-05-30 02:28:32
○ 2026-05-30 05:58:24
● 2026-05-30 08:49:38
● 2026-05-31 05:03:24
○ 2026-05-31 16:21:28
○ 2026-06-01 14:36:42
● 2026-06-01 20:14:58
● 2026-06-02 01:07:44
○ 2026-06-02 07:47:40
● 2026-06-02 11:11:40
● 2026-06-03 09:01:28
○ 2026-06-03 10:05:04
● 2026-06-03 16:51:24
● 2026-06-08 00:45:26
○ 2026-06-08 02:51:28
○ 2026-06-08 04:10:32
● 2026-06-08 07:10:10
○ 2026-06-08 10:19:04
○ 2026-08-08 04:51:32

○A3.170.185.132026-05-29 → 2026-06-08 · 21 obs

○A3.170.185.502026-05-29 → 2026-06-08 · 21 obs

○A3.170.185.772026-05-29 → 2026-06-08 · 21 obs

○A3.175.14.1162026-04-09 → 2026-06-08 · 20 obs

○ 2026-04-07 17:03:04
● 2026-04-09 15:20:50
○ 2026-04-09 21:01:56
○ 2026-04-10 00:01:02
● 2026-04-10 02:21:06
○ 2026-04-10 03:06:24
○ 2026-04-14 04:44:22
● 2026-04-14 14:14:02
● 2026-04-15 22:03:20
○ 2026-04-16 00:17:56
○ 2026-04-16 06:54:12
● 2026-04-17 00:14:46
○ 2026-04-17 00:44:52
○ 2026-04-19 14:42:22
● 2026-04-20 03:33:42
○ 2026-04-20 21:53:54
○ 2026-06-08 03:34:40
● 2026-06-08 04:10:32
○ 2026-06-08 07:10:10
○ 2026-08-08 04:51:32

○A3.175.14.1212026-04-09 → 2026-06-08 · 20 obs

○A3.175.14.332026-04-09 → 2026-06-08 · 20 obs

○A3.175.14.442026-04-09 → 2026-06-08 · 20 obs

○A34.205.6.2192021-06-21 → 2021-06-21 · 3 obs

● 2021-06-21 16:01:14
○ 2026-02-16 01:58:10
○ 2026-08-08 04:51:32

●A52.85.193.1142026-02-28 → 2026-08-08 · 32 obs

○ 2026-02-21 10:11:32
● 2026-02-28 00:14:44
○ 2026-02-28 04:10:06
○ 2026-03-05 00:55:00
● 2026-03-05 04:08:26
○ 2026-03-05 05:59:22
○ 2026-03-06 02:48:46
● 2026-03-07 00:13:32
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● 2026-03-27 03:32:12
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● 2026-07-03 09:48:30
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● 2026-07-10 18:32:48
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● 2026-08-08 04:51:28
● 2026-08-08 04:51:32

●A52.85.193.1232026-02-28 → 2026-08-08 · 32 obs

●A52.85.193.502026-02-28 → 2026-08-08 · 32 obs

●A52.85.193.772026-02-28 → 2026-08-08 · 32 obs

○A52.85.47.1172026-04-15 → 2026-04-15 · 4 obs

○ 2026-04-14 14:14:02
● 2026-04-15 04:15:52
○ 2026-04-15 05:53:54
○ 2026-08-08 04:51:32

○A52.85.47.1232026-04-15 → 2026-04-15 · 4 obs

○ 2026-04-14 14:14:02
● 2026-04-15 04:15:52
○ 2026-04-15 05:53:54
○ 2026-08-08 04:51:32

○A52.85.47.132026-04-15 → 2026-04-15 · 4 obs

○ 2026-04-14 14:14:02
● 2026-04-15 04:15:52
○ 2026-04-15 05:53:54
○ 2026-08-08 04:51:32

○A52.85.47.222026-04-15 → 2026-04-15 · 4 obs

○ 2026-04-14 14:14:02
● 2026-04-15 04:15:52
○ 2026-04-15 05:53:54
○ 2026-08-08 04:51:32

○A54.196.249.412021-06-21 → 2021-06-21 · 3 obs

● 2021-06-21 16:01:14
○ 2026-02-16 01:58:10
○ 2026-08-08 04:51:32

○A54.230.114.1192026-03-22 → 2026-04-30 · 7 obs

○ 2026-03-22 01:02:12
● 2026-03-22 12:28:34
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○ 2026-04-30 02:47:50
● 2026-04-30 03:59:52
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○A54.230.114.732026-03-22 → 2026-04-30 · 7 obs

○ 2026-03-22 01:02:12
● 2026-03-22 12:28:34
○ 2026-03-22 14:47:00
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● 2026-04-30 03:59:52
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○ 2026-08-08 04:51:32

○A54.230.114.842026-03-22 → 2026-04-30 · 7 obs

○ 2026-03-22 01:02:12
● 2026-03-22 12:28:34
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● 2026-04-30 03:59:52
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○ 2026-08-08 04:51:32

○A54.230.114.882026-03-22 → 2026-04-30 · 7 obs

○ 2026-03-22 01:02:12
● 2026-03-22 12:28:34
○ 2026-03-22 14:47:00
○ 2026-04-30 02:47:50
● 2026-04-30 03:59:52
○ 2026-04-30 05:17:18
○ 2026-08-08 04:51:32

○A99.84.160.1172026-03-07 → 2026-03-17 · 7 obs

○ 2026-03-07 11:05:00
● 2026-03-07 23:36:00
○ 2026-03-08 06:12:26
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● 2026-03-17 13:03:52
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○ 2026-08-08 04:51:32

○A99.84.160.1212026-03-07 → 2026-03-17 · 7 obs

○ 2026-03-07 11:05:00
● 2026-03-07 23:36:00
○ 2026-03-08 06:12:26
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● 2026-03-17 13:03:52
○ 2026-03-17 21:31:14
○ 2026-08-08 04:51:32

○A99.84.160.1262026-03-07 → 2026-03-17 · 7 obs

○ 2026-03-07 11:05:00
● 2026-03-07 23:36:00
○ 2026-03-08 06:12:26
○ 2026-03-17 05:38:32
● 2026-03-17 13:03:52
○ 2026-03-17 21:31:14
○ 2026-08-08 04:51:32

○A99.84.160.852026-03-07 → 2026-03-17 · 7 obs

○ 2026-03-07 11:05:00
● 2026-03-07 23:36:00
○ 2026-03-08 06:12:26
○ 2026-03-17 05:38:32
● 2026-03-17 13:03:52
○ 2026-03-17 21:31:14
○ 2026-08-08 04:51:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, f.gtld-servers.net, c.gtld-servers.net, b.gtld-servers.net...	-
cisco.com	ns1.cisco.com, ns2.cisco.com, a3-64.akam.net, a28-64.akam.net...	6 records
security.cisco.com	ns-1630.awsdns-11.co.uk, ns-461.awsdns-57.com, ns-827.awsdns-39.net, ns-1405.awsdns-47.org	-

✅ Authoritative Response

Server:205.251.197.125

NS records: ns-1630.awsdns-11.co.uk, ns-461.awsdns-57.com, ns-827.awsdns-39.net, ns-1405.awsdns-47.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cisco.com (unsigned zone)

⏱️ Timing

Total: 610ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`52.85.193.77, 52.85.193.123...`
NS	4	`ns-1405.awsdns-47.org, ns-1630.awsdns-11.co.uk...`
SOA	1	`ns-827.awsdns-39.net awsdns-hostmaster.a`

📌 Glue Records Collected

Total: 6

In-bailiwick: 6 (ns1.cisco.com, ns1.cisco.com, ns2.cisco.com...)

Analysis

Hierarchy

Among the subdomains of security.cisco.com are api.security.cisco.com, cross-app-navigator.security.cisco.com, manage.security.cisco.com, us.security.cisco.com, securex-sdk.security.cisco.com and a few other host names.

IP Addresses

security.cisco.com directs to four IP numbers, which are 52.85.193.50, 52.85.193.77, 52.85.193.114 and 52.85.193.123.

hgs4.net, partsa-nikkei-jp.n8s.jp, flyscoot.com plus two other host names have IP numbers in common with security.cisco.com.

Name Servers

Four name servers handle the delegation for security.cisco.com: ns-461.awsdns-57.com, ns-827.awsdns-39.net, ns-1405.awsdns-47.org and ns-1630.awsdns-11.co.uk.

There is at least partial name server overlap between security.cisco.com and other domains — nswlotteries.com, 121.137.174.in-addr.arpa, dji7thymgv1zv.cloudfront.net and two more among them.

These name servers tend to appear in combination with the name servers ns1-24-us-west-1.ec2-rdns.amazonaws.com, ns2-24-us-west-1.ec2-rdns.amazonaws.com, ns3-24-us-west-1.ec2-rdns.amazonaws.com and ns4-24-us-west-1.ec2-rdns.amazonaws.com.

All four hostnames — ns-461.awsdns-57.com, ns-827.awsdns-39.net, ns-1405.awsdns-47.org and ns-1630.awsdns-11.co.uk — resolve to two IP numbers apiece: ns-461.awsdns-57.com to 205.251.193.205 and 2600:9000:5301:cd00::1; ns-827.awsdns-39.net to 205.251.195.59 and 2600:9000:5303:3b00::1; ns-1405.awsdns-47.org to 205.251.197.125 and 2600:9000:5305:7d00::1; ns-1630.awsdns-11.co.uk to 205.251.198.94 and 2600:9000:5306:5e00::1.