51study.dev - robtex.com

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

51study.dev

DNSSEC🔒 Signed (DS record present)
NSajay.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b38🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRajay.ns.cloudflare.com
A2803:f800:50::6ca2:c138🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRajay.ns.cloudflare.com
A2a06:98c1:50::ac40:2138🇺🇸 Cloudflare2a06:98c1:50::/45
PTRajay.ns.cloudflare.com
A108.162.193.56🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRajay.ns.cloudflare.com
A172.64.33.56🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRajay.ns.cloudflare.com
A173.245.59.56🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRajay.ns.cloudflare.com
NSlina.ns.cloudflare.com
A2606:4700:50::adf5:3abb🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlina.ns.cloudflare.com
A2803:f800:50::6ca2:c0bb🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRlina.ns.cloudflare.com
A2a06:98c1:50::ac40:20bb🇺🇸 Cloudflare2a06:98c1:50::/45
PTRlina.ns.cloudflare.com
A108.162.192.187🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlina.ns.cloudflare.com
A172.64.32.187🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlina.ns.cloudflare.com
A173.245.58.187🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlina.ns.cloudflare.com
SOAajay.ns.cloudflare.comdns@cloudflare.com serial=2415439217

dev

DNSSEC🔒 Signed (DS record present)
NSns-tld1.charlestonroadregistry.com ⭐
NSns-tld2.charlestonroadregistry.com
NSns-tld3.charlestonroadregistry.com
NSns-tld4.charlestonroadregistry.com
NSns-tld5.charlestonroadregistry.com
SOAns-tld1.charlestonroadregistry.comcloud-dns-hostmaster@google.com serial=1
🔒 HSTS Preload (+subdomains)

Same first word

51study.top
51study.online
51study.eu.org
51study.cc
51study.com
51study.org.cn
51study.dev
51study.org
51study.net

Similar names

study51.com
study51.cn

Previous names

50x.dev
50y.dev
510tech.dev
511511511511511xfxfxfxfxfxf338899.dev
512.dev
512515.dev
512b.dev
514-artefacts.dev
515bet.dev
515hikaru.dev
518qsgvbjdi7.dev
51ai.dev
51b.dev
51bl.dev
51cg.dev
51cto.dev
51how.dev
51job.dev
51north.dev
51street.dev

Next names

51talk.dev
51token.dev
51uban.dev
51ventures.dev
51x.dev
51z.dev
521.dev
526162626974.dev
529enterprises.dev
52agents.dev
52ai.dev
52blue.dev
52s.dev
52vibes.dev
52weeks.dev
52x.dev
53-staging.dev
53.dev
531.dev

DNS History

2 records (2 active, 0 former)

NSajay.ns.cloudflare.comlina.ns.cloudflare.com
●NSajay.ns.cloudflare.com2026-08-25 → 2026-09-25 · 2 obs
● 2026-08-25 19:23:52
● 2026-09-25 14:41:14
●NSlina.ns.cloudflare.com2026-08-25 → 2026-09-25 · 2 obs
● 2026-08-25 19:23:52
● 2026-09-25 14:41:14

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
devns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com...-
51study.devlina.ns.cloudflare.com, ajay.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.32.187

NS records: lina.ns.cloudflare.com, ajay.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1128ms | Queries: -

📄 Records

TypeCountSample Data
NS2ajay.ns.cloudflare.com, lina.ns.cloudflare.com
SOA1ajay.ns.cloudflare.com dns.cloudflare.co

Analysis

Name Servers

51study.dev is served by two delegated name servers, ajay.ns.cloudflare.com and lina.ns.cloudflare.com.

51study.dev shares its name server setup with other domains, including mikolajczyk-mikolaj00.workers.dev, motorpulse.buzz, ninganywhere.win and two others.

51study.dev partially shares its NS delegation with several other domains, including soikeo.online, vivaspin2.com, nh88club.com and two others.

These name servers are frequently paired with the name servers jonah.ns.cloudflare.com, melissa.ns.cloudflare.com, andronicus.ns.cloudflare.com and two others.

Host names with 6 IP numbers:

ajay.ns.cloudflare.com carries IP addresses 108.162.193.56, 172.64.33.56 and 173.245.59.56, with 3 other addresses beyond those.

lina.ns.cloudflare.com carries IP addresses 108.162.192.187, 172.64.32.187 and 173.245.58.187, with 3 other addresses beyond those.