studio.ef.com - dns.ninja

`studio.ef.com`

DNSSEC	⚠️ Not signed
NS	`ns-163.awsdns-20.com` ⭐
		A	2600:9000:5300:a300::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-163.awsdns-20.com`
		A	205.251.192.163^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-163.awsdns-20.com`
NS	`ns-1396.awsdns-46.org`
		A	2600:9000:5305:7400::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1396.awsdns-46.org`
		A	205.251.197.116^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1396.awsdns-46.org`
NS	`ns-2037.awsdns-62.co.uk`
		A	2600:9000:5307:f500::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-2037.awsdns-62.co.uk`
		A	205.251.199.245^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-2037.awsdns-62.co.uk`
NS	`ns-523.awsdns-01.net`
		A	2600:9000:5302:b00::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-523.awsdns-01.net`
		A	205.251.194.11^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-523.awsdns-01.net`
SOA	`ns-163.awsdns-20.com`awsdns-hostmaster@amazon.com serial=1

`ef.com`

DNSSEC	⚠️ Not signed
A	2a06:98c1:3103::ac40:90b4^{🇺🇸 Cloudflare2a06:98c1:3103::/48} ✓ In HTTPS hints
A	2a06:98c1:310d::6812:2b4c^{🇺🇸 Cloudflare2a06:98c1:310d::/48} ✓ In HTTPS hints
A	104.18.43.76^{Cloudflare104.18.43.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.64.144.180^{🇺🇸 Cloudflare172.64.144.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`jihoon.ns.cloudflare.com` ⭐
NS	`tricia.ns.cloudflare.com`
MX	`efcom.mail.protection.outlook.com` ⭐
TXT	`SFMC-ItSDn8I-_WPvDgP5QDjuQCbSdPKgZIJJcL1iuKfk`
TXT	`Sendinblue-code:3b4d41269b4df351be1c8f1189329766`
TXT	`ZOOM_verify_i21AZ_z1RiCfS0dEosj0uw`
TXT	`ZQjWmyMMEAcM2JUKuBCQNaGG/p5Fk3h8ei5G1YIKdmOrNx6GiphKRqgyb3KAf7mRUeIspkoX+L2es...`
TXT	`_361l8dnf91sfr841ds82d3je2fy35t9`
TXT	`_n1erml6nlo4atf8dfskj3fgpy4wnlaq`
TXT	`adobe-idp-site-verification=e647ef23ee05d9b047987fd9e8c8cd2b519bc84349e1f6ddb...`
TXT	`aliyun-site-verification=88317b51-c089-4094-be4c-ac9b98500deb`
TXT	`amazonses:V3vAdLKApvqHOoy6diFc5VRsGzfi3z2tGE0FPg/IDDs=`
TXT	`amazonses:a677pw4glw5rFrEbwGscSc2VElj6Q7gjDYvGjD+Ok8s=`
TXT	`anthropic-domain-verification-b87znz=85aHFIVOvsdkvn71ZFo7izc5o`
TXT	`apple-domain-verification=3_jpDJipYQI4_6yNolBXp0L8QX251AeIRbSmmKigcEE`
TXT	`apple-domain-verification=hr2LYfzQYFUVC7Qf`
TXT	`as=1568111888`
TXT	`asv=7328be92dc8e81d6ae473b8348472e37`
TXT	`atlassian-domain-verification=5/8xNXzJgidFT4+gz1mBv3oO//Imgdn4t7UgwV4v4KcrP1+...`
TXT	`atlassian-domain-verification=7N7voUyjPrLNjbTWcOL65746uUThn5Af8+wfbbwM/zpFMtw...`
TXT	`atlassian-domain-verification=iUyEJfC7rAC91HZbQI9k6+Zo5rQllv2G8IK19dYEzRmthC8...`
TXT	`atlassian-domain-verification=qQgMM8iyVskttk2KlGmktyvHdEMGZF1AkzbCZKYEq4OHW77...`
TXT	`atlassian-domain-verification=zmQ0q8CpyRnSPCtkYxCmzZ1d99cTeAzGIu7dR4EFQOUleEC...`
TXT	`canva-site-verification=pm3R30MVZBfAmd0BNeBAGA`
TXT	`cursor-domain-verification-7vfyg8=7AzgD8A9IIRO1i1t5tFH2XJYW`
TXT	`dnp1cgszf00xq5tlkw3p9p7wl232m9mq`
TXT	`google-site-verification=YifwZA32Cd3BWWmPIqQez_Z5kmHlnzR6Msx-AsrSmKw`
TXT	`google-site-verification=auQ-4DOUjDGrU5X6tpviSwR2ng0xqs7WvMU5kJDPKiU`
TXT	`google-site-verification=s_RxVeIztieRZw1nnozp1QhLxPTUrL2ljGBmDi_-_Po`
TXT	`lastpass-N#23c@htz%W^$UZT!RhgDfdOE7$M&9Km277YjS@ZNWTMDOxd#V@p5RTbC8MI15V$VcnE...`
TXT	`linear-domain-verification=5msk3qv8d29y`
TXT	`lovable_verification=dRdWWMlhd8BWt4SplQnx`
TXT	`miro-verification=c143776b28571137649848a613b058dc31463ca1`
TXT	`mongodb-site-verification=qBXcSoyIwQYkIQYLbgDJ2hHevZey2Ps2`
TXT	`mongodb-site-verification=tyz4iJXYkkT6v9At7hlc64C6A8PuosXu`
TXT	`northpass-domain-verification=fedd3b6d621f033e9e563b678b0770ee`
TXT	`notion-domain-verification=XH1JmClmZIwN9757ZB2qt97UnUxNywtyUgje5S5SVuq`
TXT	`onetrust-domain-verification=42cc6f29b8944d1b829dd4a861404975`
TXT	`pardot848123=1644e8a4968e1386a832d2eaa0f15cea68f2dc4014bd60c10eb7e88e99caff5b`
TXT	`pardot848123=dfa2026bbfbd11501997c14f1e517a954a195a9acc81c56dd18bae3f5b476820`
TXT	`qCEF214/pE8wOgBsipGHcD2y91lM5rS7YAwcIA2ovM7Lxbvm+LGD7lGP//+IDSX5z4bTNn36HYKRO...`
TXT	`qmjjvn6131hdwl0m11bvgbr7hhds1q3t`
TXT	`site24x7-domain-verification=e416a5f9c47ef32e346440561ece9fb3`
TXT	`v=msv1 t=5a826e43b6be0f4da8ab8427e5830d`
TXT	`v=spf1 include:_u.ef.com._spf.smart.ondmarc.com -all`
TXT	`wrike-verification=MjI5MzUxNTplYWM5OTQ4ODA1NTg4ZGNiNmNiMWZjMzk3YmNmOGNiZmY3Mm...`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.18.43.76, 172.64.144.180
		IPv6 hints	2a06:98c1:3103::ac40:90b4, 2a06:98c1:310d::6812:2b4c
SOA	`jihoon.ns.cloudflare.com`dns@cloudflare.com serial=2410995244

WOT: SAFE (88/100)
rank #6104 globally
rank #3020 in the tld
WOT: SAFE (88/100)
📈 Tranco rank: #18,499

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DNS History

4 records (4 active, 0 former)

●NSns-1396.awsdns-46.org2026-07-31 → 2026-08-03 · 2 obs

● 2026-07-31 23:49:34
● 2026-08-03 05:19:44

●NSns-163.awsdns-20.com2026-07-31 → 2026-08-03 · 2 obs

● 2026-07-31 23:49:34
● 2026-08-03 05:19:44

●NSns-2037.awsdns-62.co.uk2026-07-31 → 2026-08-03 · 2 obs

● 2026-07-31 23:49:34
● 2026-08-03 05:19:44

●NSns-523.awsdns-01.net2026-07-31 → 2026-08-03 · 2 obs

● 2026-07-31 23:49:34
● 2026-08-03 05:19:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	m.gtld-servers.net, k.gtld-servers.net, j.gtld-servers.net, a.gtld-servers.net...	-
ef.com	tricia.ns.cloudflare.com, jihoon.ns.cloudflare.com	12 records
studio.ef.com	ns-1396.awsdns-46.org, ns-163.awsdns-20.com, ns-2037.awsdns-62.co.uk, ns-523.awsdns-01.net	-

✅ Authoritative Response

Server:205.251.192.163

NS records: ns-1396.awsdns-46.org, ns-163.awsdns-20.com, ns-2037.awsdns-62.co.uk, ns-523.awsdns-01.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ef.com (unsigned zone)

⏱️ Timing

Total: 324ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	4	`ns-1396.awsdns-46.org, ns-163.awsdns-20.com...`
SOA	1	`ns-163.awsdns-20.com awsdns-hostmaster.a`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (tricia.ns.cloudflare.com, tricia.ns.cloudflare.com, tricia.ns.cloudflare.com...)

Analysis

Name Servers

The authoritative name servers for studio.ef.com are ns-163.awsdns-20.com, ns-523.awsdns-01.net, ns-1396.awsdns-46.org and ns-2037.awsdns-62.co.uk.

studio.ef.com has at least partial name server overlap with other domains, such as insidekampus.com, ilrecruitinginvitational.com, 103qin.com and two others.

These name servers tend to appear together with the name servers ns-18.awsdns-02.com, ns-1069.awsdns-05.org and ns-995.awsdns-60.net.

ns-163.awsdns-20.com, ns-523.awsdns-01.net, ns-1396.awsdns-46.org and ns-2037.awsdns-62.co.uk all point to exactly two IP numbers each: ns-163.awsdns-20.com → 205.251.192.163 and 2600:9000:5300:a300::1; ns-523.awsdns-01.net → 205.251.194.11 and 2600:9000:5302:b00::1; ns-1396.awsdns-46.org → 205.251.197.116 and 2600:9000:5305:7400::1; ns-2037.awsdns-62.co.uk → 205.251.199.245 and 2600:9000:5307:f500::1.