core.tech - dns.ninja

`core.tech`

DNSSEC	⚠️ Not signed
A	2606:4700:3108::ac42:288e^{🇺🇸 Cloudflare2606:4700:3108::/48 101 Townsend Street, San Francisco, California 94107, US}
A	2606:4700:3108::ac42:2b72^{🇺🇸 Cloudflare2606:4700:3108::/48 101 Townsend Street, San Francisco, California 94107, US}
A	172.66.40.142^{🇺🇸 Cloudflare172.66.40.0/21 101 Townsend Street, San Francisco, California 94107, US}
A	172.66.43.114^{🇺🇸 Cloudflare172.66.40.0/21 101 Townsend Street, San Francisco, California 94107, US}
NS	`nicole.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3ad3^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nicole.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0d3^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`nicole.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20d3^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`nicole.ns.cloudflare.com`
		A	108.162.192.211^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nicole.ns.cloudflare.com`
		A	172.64.32.211^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nicole.ns.cloudflare.com`
		A	173.245.58.211^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nicole.ns.cloudflare.com`
NS	`rajeev.ns.cloudflare.com`
		A	2606:4700:58::adf5:3be0^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rajeev.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1e0^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`rajeev.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21e0^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`rajeev.ns.cloudflare.com`
		A	108.162.193.224^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rajeev.ns.cloudflare.com`
		A	172.64.33.224^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rajeev.ns.cloudflare.com`
		A	173.245.59.224^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rajeev.ns.cloudflare.com`
MX	`us-smtp-inbound-1.mimecast.com` ⭐
		A	170.10.128.141^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.221^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.242^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.141^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.221^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.242^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
MX	`us-smtp-inbound-2.mimecast.com`⁽²⁰⁾
		A	170.10.128.141^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.221^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.242^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.141^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.221^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.242^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
TXT	`BlmvYpo+GuvBqepl9atTZpzuEzewpT/CJub1HCsGawDgRd/libD9YN7Acr9o0Okr8Dv/6sdAr/Gu6...`
TXT	`docusign=608f1df6-def3-423d-8351-d3bfa87ad5c5`
TXT	`google-site-verification=EeAO_NVvev9lH590svzjVLoVIJUKLVZ8N0H8agmsE7A`
TXT	`knowbe4-site-verification=bd79d8614a128138e2611ec57349d9ee`
TXT	`mgverify=c89f5ff7ac6f47c8392c689f11cef471baddd0e30fd381deb2134772fc492368`
TXT	`pardot827643=933828849b2d11b4c54bb66066fcbb1827d83f2e81c760bcc06b7430699cc2f1`
TXT	`sending_domain827643=e54a81e5a5c787f51b1a52f9b5063c2f8264c5823c6d66b6b387c632...`
TXT	`sophos-domain-verification=decc4beacb964ef36bf25cdf6a19efebbe406400884acbfece...`
TXT	`v=spf1 include:us._netblocks.mimecast.com include:_spf.salesforce.com include...`
SOA	`nicole.ns.cloudflare.com`dns@cloudflare.com serial=2405900505

`tech`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns01.trs-dns.com` ⭐
	NS	`ns.trs-dns.com`
	NS	`ns01.trs-dns.net`
	NS	`ns10.trs-dns.info`
	NS	`ns10.trs-dns.org`
	SOA	`ns.trs-dns.com`trs-ops@tucows.com serial=1780542239

Same first word

core.co.nz

core.ba

core.ro

core.sa

core.kim

core.co.uk

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core.li

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core.co.jp

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core.dns-cloud.net

core.cards

core.bot

core.cloudapp.net

core.s3.amazonaws.com

core.limited

core.sh

core.info

core.dev

core.wiki

core.windows

core.ai

core.coach

core.camera

core.co.za

core.ca

core.vn

core.it

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core.com.hk

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core.tv

core.dental

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core.education

core.mx

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core.edu

core.se

core.org.ua

core.builders

core.life

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core.nl

core.cx

core.dating

core.farm

core.ps

core.ac.uk

core.bet

core.fail

core.exposed

core.healthcare

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core.ru

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core.in

core.network

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core.com.mx

core.pm

core.ec

core.golf

core.us

core.equipment

core.uk.com

core.edu.au

core.technology

core.redirectme.net

core.net

core.bz

core.my

core.host

core.fm

core.ch

core.tech

core.gs

core.red

core.engineering

core.hosting

core.com.ph

core.im

core.kids

core.ee

core.photos

core.de

core.com.ec

core.bg

core.app

core.be

core.ie

core.com.pl

core.today

core.chat

core.ac

core.care

core.net.id

core.ms

core.direct

core.pp.ua

core.ac.jp

core.guru

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core.capital

core.org

core.dk

core.by

core.pt

core.is

core.supplies

core.vote

core.pw

core.xii.jp

core.gallery

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DNS History

8 records (8 active, 0 former)

●NSnicole.ns.cloudflare.com2026-02-14 → 2026-06-04 · 2 obs

● 2026-02-14 16:07:16
● 2026-06-04 03:19:32

●NSrajeev.ns.cloudflare.com2026-02-14 → 2026-06-04 · 2 obs

● 2026-02-14 16:07:16
● 2026-06-04 03:19:32

●MXus-smtp-inbound-1.mimecast.com2026-02-14 → 2026-06-04 · 2 obs

● 2026-02-14 16:07:16
● 2026-06-04 03:19:32

●MXus-smtp-inbound-2.mimecast.com2026-02-14 → 2026-06-04 · 2 obs

● 2026-02-14 16:07:16
● 2026-06-04 03:19:32

●A172.66.40.1422026-02-14 → 2026-06-04 · 2 obs

● 2026-02-14 16:07:16
● 2026-06-04 03:19:32

●A172.66.43.1142026-02-14 → 2026-06-04 · 2 obs

● 2026-02-14 16:07:16
● 2026-06-04 03:19:32

●A2606:4700:3108::ac42:288e2026-02-14 → 2026-06-04 · 2 obs

● 2026-02-14 16:07:16
● 2026-06-04 03:19:32

●A2606:4700:3108::ac42:2b722026-02-14 → 2026-06-04 · 2 obs

● 2026-02-14 16:07:16
● 2026-06-04 03:19:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
tech	ns01.trs-dns.com, ns01.trs-dns.net, ns10.trs-dns.org, ns10.trs-dns.info	-
core.tech	nicole.ns.cloudflare.com, rajeev.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.33.224

NS records: nicole.ns.cloudflare.com, rajeev.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for core.tech (unsigned zone)

⏱️ Timing

Total: 745ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.66.43.114, 172.66.40.142`
AAAA	2	`2606:4700:3108::ac42:2b72, 2606:4700:3108::ac42:288e`
NS	2	`nicole.ns.cloudflare.com, rajeev.ns.cloudflare.com`
MX	2	`us-smtp-inbound-1.mimecast.com (pri: 10), us-smtp-inbound-2.mimecast.com (pri: 20)`
TXT	9	`BlmvYpo+GuvBqepl9atTZpzuEzewpT/CJub1HCsG, docusign=608f1df6-def3-423d-8351-d3bfa87...`
SOA	1	`nicole.ns.cloudflare.com dns.cloudflare.`

Analysis

IP Addresses

With 4 IP addresses, core.tech directs to 172.66.40.142, 172.66.43.114, 2606:4700:3108::ac42:288e and 2606:4700:3108::ac42:2b72.

Among the host names that share IP numbers with core.tech are www.perfectketo.com, sso.hubits.io, montrose.is and two others.

Name Servers

core.tech is served by two delegated name servers, nicole.ns.cloudflare.com and rajeev.ns.cloudflare.com.

core.tech has the same name server delegation as a number of other domains, such as ipvpbar.com, ytjjmarket.com, soundshore.net and two more.

At least some of core.tech's name servers are shared with other domains, for example inrooms.ru, orbitreelsdesk.nl, zetaportal.ru and two more.

It is common for these name servers to be used in conjunction with the name servers sreeni.ns.cloudflare.com, peyton.ns.cloudflare.com and cory.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

nicole.ns.cloudflare.com directs to 108.162.192.211, 172.64.32.211, 173.245.58.211 and three others.

rajeev.ns.cloudflare.com directs to 108.162.193.224, 172.64.33.224, 173.245.59.224 and three others.

Mail Servers

The MX records for core.tech point to two mail servers: us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com.

core.tech has the same mail server arrangement as a number of other domains, for example comoso.com, codaagency.com, carc.info and two more.

core.tech overlaps on mail servers with several other domains, for example tankspecialists.com, spirol.com, mlglaw.com and trianglepump.com.

Host names resolving to 6 IP numbers:

us-smtp-inbound-1.mimecast.com directs to 170.10.128.141, 170.10.128.221, 170.10.128.242 and three others.

us-smtp-inbound-2.mimecast.com directs to 170.10.128.141, 170.10.128.221, 170.10.128.242 and three others.

These two host names — us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com — each point to 170.10.128.141 IP addresses.

These two host names — us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com — each point to 170.10.128.221 IP addresses.

These two host names — us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com — each point to 170.10.128.242 IP addresses.

These two host names — us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com — each point to 170.10.132.141 IP addresses.

These two host names — us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com — each point to 170.10.132.221 IP addresses.

These two host names — us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com — each point to 170.10.132.242 IP addresses.