`openai.study`

DNSSEC	⚠️ Not signed
NS	`ns-1199.awsdns-21.org` ⚠️ Not in zone NS records
		A	2600:9000:5304:af00::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1199.awsdns-21.org`
		A	205.251.196.175^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1199.awsdns-21.org`
NS	`ns-147.awsdns-18.com` ⚠️ Not in zone NS records
		A	2600:9000:5300:9300::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-147.awsdns-18.com`
		A	205.251.192.147^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-147.awsdns-18.com`
NS	`ns-1733.awsdns-24.co.uk` ⚠️ Not in zone NS records
		A	2600:9000:5306:c500::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1733.awsdns-24.co.uk`
		A	205.251.198.197^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1733.awsdns-24.co.uk`
NS	`ns-942.awsdns-53.net` ⚠️ Not in zone NS records
		A	2600:9000:5303:ae00::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-942.awsdns-53.net`
		A	205.251.195.174^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-942.awsdns-53.net`

`study`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.nic.study` ⭐
	NS	`b.nic.study`
	NS	`c.nic.study`
	NS	`x.nic.study`
	NS	`y.nic.study`
	NS	`z.nic.study`
	SOA	`a.nic.study`admin@tldns.godaddy serial=1786195254

Same first word

openai.cfd

openai.info

openai.pp.ua

openai.hk

openai.name

openai.legal

openai.ws

openai.art

openai.kz

openai.ventures

openai.sh.cn

openai.med

openai.us

openai.com.py

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openai.army

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openai.pages.dev

openai.id.vn

openai.in.net

openai.yachts

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openai.gift

openai.to

openai.bot

openai.free

openai.it

openai.fyi

openai.com.gr

openai.dk

openai.com.vn

openai.asia

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openai.homes

openai.ru

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openai.li

openai.jp

openai.cn.com

openai.ac

openai.co.za

openai.fast

openai.house

openai.me

openai.fund

openai.info.pl

openai.se

openai.lv

openai.ceo

openai.blog

openai.by

openai.makeup

openai.garden

openai.com.pl

openai.com.au

openai.io

openai.uz

openai.nz

openai.chat

openai.wiki

openai.la

openai.kg

openai.ai.in

openai.al

openai.mobi

openai.so

openai.fun

openai.net

openai.co.nz

openai.lu

openai.co.com

openai.org.pl

openai.pt

openai.city

openai.ml

openai.wedding

openai.top

openai.earth

openai.realestate

openai.bj

openai.fr

openai.nyc.mn

openai.osaka

openai.win

openai.vn

openai.cl

openai.ca

openai.pics

openai.org

openai.taipei

openai.im

openai.ng

openai.net.ph

openai.tw

openai.ir

openai.com.in

openai.td

openai.mil.ph

openai.web.id

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epiano.net

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paieon.com

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peonia.net

paione.com.cn

neoipa.com

opinea.it

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apineo.app

poenai.nl

DNS History

32 records (4 active, 28 former)

●NSns-1199.awsdns-21.org2026-04-10 → 2026-08-08 · 2 obs

● 2026-04-10 18:30:26
● 2026-08-08 13:26:16

●NSns-147.awsdns-18.com2026-04-10 → 2026-08-08 · 2 obs

● 2026-04-10 18:30:26
● 2026-08-08 13:26:16

●NSns-1733.awsdns-24.co.uk2026-04-10 → 2026-08-08 · 2 obs

● 2026-04-10 18:30:26
● 2026-08-08 13:26:16

●NSns-942.awsdns-53.net2026-04-10 → 2026-08-08 · 2 obs

● 2026-04-10 18:30:26
● 2026-08-08 13:26:16

○A13.214.112.2342026-07-11 → 2026-07-11 · 4 obs

○ 2026-06-28 15:51:58
● 2026-07-11 03:54:00
○ 2026-07-20 22:43:56
○ 2026-08-08 13:26:16

○A13.215.4.1302026-05-25 → 2026-06-02 · 5 obs

○ 2026-05-19 07:54:32
● 2026-05-25 14:12:30
● 2026-06-02 14:25:14
○ 2026-06-04 18:23:40
○ 2026-08-08 13:26:16

○A13.228.223.362026-05-19 → 2026-05-19 · 4 obs

○ 2026-05-15 05:29:14
● 2026-05-19 07:54:32
○ 2026-05-25 14:12:30
○ 2026-08-08 13:26:16

○A13.250.75.532026-06-04 → 2026-06-06 · 5 obs

○ 2026-06-02 14:25:14
● 2026-06-04 18:23:40
● 2026-06-06 22:43:16
○ 2026-06-28 15:51:58
○ 2026-08-08 13:26:16

○A13.251.225.1722026-05-19 → 2026-05-26 · 5 obs

○ 2026-05-15 05:29:14
● 2026-05-19 07:54:32
● 2026-05-26 19:11:36
○ 2026-06-02 14:25:14
○ 2026-08-08 13:26:16

○A18.136.219.1742026-05-11 → 2026-05-15 · 5 obs

○ 2026-05-09 05:56:02
● 2026-05-11 11:30:32
● 2026-05-15 05:29:14
○ 2026-05-19 07:54:32
○ 2026-08-08 13:26:16

○A18.138.59.2492026-07-20 → 2026-07-20 · 4 obs

○ 2026-07-11 03:54:00
● 2026-07-20 22:43:56
○ 2026-08-07 11:55:36
○ 2026-08-08 13:26:16

○A18.139.130.1342026-06-28 → 2026-06-28 · 4 obs

○ 2026-06-06 22:43:16
● 2026-06-28 15:51:58
○ 2026-07-11 03:54:00
○ 2026-08-08 13:26:16

○A18.139.155.272026-04-17 → 2026-04-18 · 5 obs

○ 2026-04-12 13:17:28
● 2026-04-17 19:10:54
● 2026-04-18 22:56:28
○ 2026-05-09 00:53:44
○ 2026-08-08 13:26:16

○A18.139.216.1192026-05-15 → 2026-05-15 · 4 obs

○ 2026-05-11 11:30:32
● 2026-05-15 05:29:14
○ 2026-05-19 07:54:32
○ 2026-08-08 13:26:16

○A18.139.38.262026-06-02 → 2026-06-06 · 5 obs

○ 2026-05-26 19:11:36
● 2026-06-02 14:25:14
● 2026-06-06 22:43:16
○ 2026-06-28 15:51:58
○ 2026-08-08 13:26:16

○A18.140.82.62026-06-02 → 2026-06-04 · 5 obs

○ 2026-05-26 19:11:36
● 2026-06-02 14:25:14
● 2026-06-04 18:23:40
○ 2026-06-05 15:14:46
○ 2026-08-08 13:26:16

○A18.141.94.1852026-05-09 → 2026-05-15 · 5 obs

○ 2026-04-18 22:56:28
● 2026-05-09 00:53:44
● 2026-05-15 05:29:14
○ 2026-05-19 07:54:32
○ 2026-08-08 13:26:16

○A18.142.78.1942026-06-05 → 2026-06-06 · 5 obs

○ 2026-06-04 18:23:40
● 2026-06-05 15:14:46
● 2026-06-06 22:43:16
○ 2026-06-28 15:51:58
○ 2026-08-08 13:26:16

○A18.143.217.1402026-05-09 → 2026-05-09 · 5 obs

○ 2026-04-18 22:56:28
● 2026-05-09 00:53:44
● 2026-05-09 05:56:02
○ 2026-05-11 11:30:32
○ 2026-08-08 13:26:16

○A18.143.53.1282026-07-11 → 2026-07-11 · 4 obs

○ 2026-06-28 15:51:58
● 2026-07-11 03:54:00
○ 2026-07-20 22:43:56
○ 2026-08-08 13:26:16

○A3.0.252.1172026-07-20 → 2026-07-20 · 4 obs

○ 2026-07-11 03:54:00
● 2026-07-20 22:43:56
○ 2026-08-07 11:55:36
○ 2026-08-08 13:26:16

○A3.1.119.932026-04-10 → 2026-04-12 · 4 obs

● 2026-04-10 18:30:26
● 2026-04-12 13:17:28
○ 2026-04-17 19:10:54
○ 2026-08-08 13:26:16

○A52.220.181.1992026-04-10 → 2026-04-18 · 4 obs

● 2026-04-10 18:30:26
● 2026-04-18 22:56:28
○ 2026-05-09 00:53:44
○ 2026-08-08 13:26:16

○A52.221.99.1152026-05-09 → 2026-05-09 · 5 obs

○ 2026-04-18 22:56:28
● 2026-05-09 00:53:44
● 2026-05-09 05:56:02
○ 2026-05-11 11:30:32
○ 2026-08-08 13:26:16

○A52.74.138.1792026-05-19 → 2026-05-26 · 5 obs

○ 2026-05-15 05:29:14
● 2026-05-19 07:54:32
● 2026-05-26 19:11:36
○ 2026-06-02 14:25:14
○ 2026-08-08 13:26:16

○A52.76.33.2042026-07-20 → 2026-07-20 · 4 obs

○ 2026-07-11 03:54:00
● 2026-07-20 22:43:56
○ 2026-08-07 11:55:36
○ 2026-08-08 13:26:16

○A52.76.4.1752026-07-11 → 2026-07-11 · 4 obs

○ 2026-06-28 15:51:58
● 2026-07-11 03:54:00
○ 2026-07-20 22:43:56
○ 2026-08-08 13:26:16

○A54.151.230.332026-04-10 → 2026-04-12 · 4 obs

● 2026-04-10 18:30:26
● 2026-04-12 13:17:28
○ 2026-04-17 19:10:54
○ 2026-08-08 13:26:16

○A54.169.22.2452026-05-11 → 2026-05-11 · 4 obs

○ 2026-05-09 05:56:02
● 2026-05-11 11:30:32
○ 2026-05-15 05:29:14
○ 2026-08-08 13:26:16

○A54.179.229.2362026-06-28 → 2026-06-28 · 4 obs

○ 2026-06-06 22:43:16
● 2026-06-28 15:51:58
○ 2026-07-11 03:54:00
○ 2026-08-08 13:26:16

○A54.179.42.2272026-06-28 → 2026-06-28 · 4 obs

○ 2026-06-06 22:43:16
● 2026-06-28 15:51:58
○ 2026-07-11 03:54:00
○ 2026-08-08 13:26:16

○A54.251.239.1672026-04-17 → 2026-04-18 · 5 obs

○ 2026-04-12 13:17:28
● 2026-04-17 19:10:54
● 2026-04-18 22:56:28
○ 2026-05-09 00:53:44
○ 2026-08-08 13:26:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
study	a.nic.study, b.nic.study, c.nic.study, x.nic.study...	12 records
openai.study	ns-1199.awsdns-21.org, ns-1733.awsdns-24.co.uk, ns-147.awsdns-18.com, ns-942.awsdns-53.net	-

✅ Authoritative Response

Server:205.251.192.147

NS records: ns-1199.awsdns-21.org, ns-1733.awsdns-24.co.uk, ns-147.awsdns-18.com, ns-942.awsdns-53.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for openai.study (unsigned zone)

⏱️ Timing

Total: 1590ms | Queries: -

📄 Records

Type	Count	Sample Data

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (a.nic.study, b.nic.study, c.nic.study...)

Analysis

Name Servers

openai.study has four authoritative name servers: ns-147.awsdns-18.com, ns-942.awsdns-53.net, ns-1199.awsdns-21.org and ns-1733.awsdns-24.co.uk.

There is at least partial name server overlap between openai.study and other domains — red-ice.me, ryoma.ac.jp, 227.20.51.in-addr.arpa and two more among them.

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

All four hostnames — ns-147.awsdns-18.com, ns-942.awsdns-53.net, ns-1199.awsdns-21.org and ns-1733.awsdns-24.co.uk — resolve to two IP numbers apiece: ns-147.awsdns-18.com to 205.251.192.147 and 2600:9000:5300:9300::1; ns-942.awsdns-53.net to 205.251.195.174 and 2600:9000:5303:ae00::1; ns-1199.awsdns-21.org to 205.251.196.175 and 2600:9000:5304:af00::1; ns-1733.awsdns-24.co.uk to 205.251.198.197 and 2600:9000:5306:c500::1.

openai.study - robtex.com

openai.study

study

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Name Servers

`openai.study`

`study`