`computerscience.guide`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:c2f1^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::6815:5a2c^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.90.44^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.194.241^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`hank.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b74^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hank.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c174^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`hank.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2174^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`hank.ns.cloudflare.com`
		A	108.162.193.116^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hank.ns.cloudflare.com`
		A	172.64.33.116^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hank.ns.cloudflare.com`
		A	173.245.59.116^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hank.ns.cloudflare.com`
NS	`ivy.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a78^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivy.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c078^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ivy.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2078^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ivy.ns.cloudflare.com`
		A	108.162.192.120^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivy.ns.cloudflare.com`
		A	172.64.32.120^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivy.ns.cloudflare.com`
		A	173.245.58.120^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivy.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.90.44, 172.67.194.241
		IPv6 hints	2606:4700:3030::ac43:c2f1, 2606:4700:3031::6815:5a2c
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=59, name=cloudflare-ech.com
SOA	`hank.ns.cloudflare.com`dns@cloudflare.com serial=2403527562

`guide`

	DNSSEC	🔒 Signed (DS record present)
	NS	`v0n0.nic.guide` ⭐
	NS	`v0n1.nic.guide`
	NS	`v0n2.nic.guide`
	NS	`v0n3.nic.guide`
	NS	`v2n0.nic.guide`
	NS	`v2n1.nic.guide`
	SOA	`v0n0.nic.guide`hostmaster@donuts.email serial=1778674990

🔒 HSTS Preload (+subdomains)

Same first word

DNS History

11 records (6 active, 5 former)

●NShank.ns.cloudflare.com2026-02-15 → 2026-05-13 · 3 obs

○ 2017-08-07 18:53:30
● 2026-02-15 08:47:00
● 2026-05-13 12:33:38

●NSivy.ns.cloudflare.com2026-02-15 → 2026-05-13 · 3 obs

○ 2017-08-07 18:53:30
● 2026-02-15 08:47:00
● 2026-05-13 12:33:38

○NSpdns07.domaincontrol.com2016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 18:11:40
○ 2017-08-07 18:53:30
○ 2026-05-13 12:33:38

○NSpdns08.domaincontrol.com2016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 18:11:40
○ 2017-08-07 18:53:30
○ 2026-05-13 12:33:38

○MXmailstore1.secureserver.net2016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 18:11:40
○ 2017-08-07 18:53:30
○ 2026-05-13 12:33:38

○MXsmtp.secureserver.net2016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 18:11:40
○ 2017-08-07 18:53:30
○ 2026-05-13 12:33:38

●A104.21.90.442026-02-15 → 2026-05-13 · 3 obs

○ 2017-08-07 18:53:30
● 2026-02-15 08:47:00
● 2026-05-13 12:33:38

●A172.67.194.2412026-02-15 → 2026-05-13 · 3 obs

○ 2017-08-07 18:53:30
● 2026-02-15 08:47:00
● 2026-05-13 12:33:38

○A184.168.221.162016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 18:11:40
○ 2017-08-07 18:53:30
○ 2026-05-13 12:33:38

●A2606:4700:3030::ac43:c2f12026-02-15 → 2026-05-13 · 3 obs

○ 2017-08-07 18:53:30
● 2026-02-15 08:47:00
● 2026-05-13 12:33:38

●A2606:4700:3031::6815:5a2c2026-02-15 → 2026-05-13 · 3 obs

○ 2017-08-07 18:53:30
● 2026-02-15 08:47:00
● 2026-05-13 12:33:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
guide	v0n1.nic.guide, v2n1.nic.guide, v0n3.nic.guide, v0n0.nic.guide...	12 records
computerscience.guide	hank.ns.cloudflare.com, ivy.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.59.116

NS records: hank.ns.cloudflare.com, ivy.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for computerscience.guide (unsigned zone)

⏱️ Timing

Total: 725ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.90.44, 172.67.194.241`
AAAA	2	`2606:4700:3030::ac43:c2f1, 2606:4700:3031::6815:5a2c`
NS	2	`hank.ns.cloudflare.com, ivy.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`hank.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (v0n1.nic.guide, v0n1.nic.guide, v2n1.nic.guide...)

Analysis

IP Addresses

Four IP numbers are pointed to by computerscience.guide: 2606:4700:3030::ac43:c2f1, 2606:4700:3031::6815:5a2c, 104.21.90.44 and 172.67.194.241.

other host names including amp.maximilliabout.shop, bustabit.club, leafuzs332673.wikipresses.com, 2.johnnygo.xyz and codezero-agency.com share IP numbers with computerscience.guide.

Name Servers

computerscience.guide is delegated to two name servers hank.ns.cloudflare.com and ivy.ns.cloudflare.com.

computerscience.guide shares the same name server setup as other domains, for instance edugames.ch, mlol.com.br, nmci.nl, austinmonogram.com and giannoulis.net.

computerscience.guide at least partially shares name servers with other domains, for instance mrprofootball.com, miiowgo.cn, dragon-dev.com, eiqsa.com.mx and moimessouliers.org.

these name servers are commonly used alongside arnold.ns.cloudflare.com.

Host names with six IP numbers:

Host name hank.ns.cloudflare.com points to: 2606:4700:58::adf5:3b74, 2803:f800:50::6ca2:c174, 2a06:98c1:50::ac40:2174, 108.162.193.116, 172.64.33.116 and 173.245.59.116.

Host name ivy.ns.cloudflare.com points to: 2606:4700:50::adf5:3a78, 2803:f800:50::6ca2:c078, 2a06:98c1:50::ac40:2078, 108.162.192.120, 172.64.32.120 and 173.245.58.120.

computerscience.guide - robtex.com