`collegecodex.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:3f2a^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:8f11^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.63.42^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.143.17^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`angela.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a41^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`angela.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c041^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`angela.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2041^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`angela.ns.cloudflare.com`
		A	108.162.192.65^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`angela.ns.cloudflare.com`
		A	172.64.32.65^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`angela.ns.cloudflare.com`
		A	173.245.58.65^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`angela.ns.cloudflare.com`
NS	`roan.ns.cloudflare.com`
		A	2606:4700:58::adf5:3be2^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`roan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1e2^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`roan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21e2^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`roan.ns.cloudflare.com`
		A	108.162.193.226^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`roan.ns.cloudflare.com`
		A	172.64.33.226^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`roan.ns.cloudflare.com`
		A	173.245.59.226^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`roan.ns.cloudflare.com`
MX	`smtp.secureserver.net` ⭐
		A	216.69.141.71^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp01-v01.prod.phx3.secureserver.net`
		A	216.69.141.84^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp02-v01.prod.phx3.secureserver.net`
		A	216.69.141.113^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp03-v01.prod.phx3.secureserver.net`
MX	`mailstore1.secureserver.net`⁽¹⁰⁾
		A	216.69.141.78^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp01-v02.prod.phx3.secureserver.net`
		A	216.69.141.114^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp03-v02.prod.phx3.secureserver.net`
		A	216.69.141.162^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp02-v02.prod.phx3.secureserver.net`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.63.42, 172.67.143.17
		IPv6 hints	2606:4700:3033::6815:3f2a, 2606:4700:3035::ac43:8f11
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=146, name=cloudflare-ech.com
SOA	`angela.ns.cloudflare.com`dns@cloudflare.com serial=2409232042

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1785598997

Previously MX for

collegecodex.com

Same first word

collegecodex.com

Similar names

codexcollege.com

DNS History

15 records (8 active, 7 former)

●NSangela.ns.cloudflare.com2026-06-24 → 2026-08-01 · 3 obs

○ 2017-09-03 13:09:18
● 2026-06-24 23:55:34
● 2026-08-01 15:59:36

○NSns1.acebs.com2008-03-17 → 2008-03-17 · 3 obs

● 2008-03-17 04:23:08
○ 2015-08-01 09:25:30
○ 2026-08-01 15:59:36

○NSns2.acebs.com2008-03-17 → 2008-03-17 · 3 obs

● 2008-03-17 04:23:08
○ 2015-08-01 09:25:30
○ 2026-08-01 15:59:36

○NSns51.domaincontrol.com2015-08-01 → 2017-09-03 · 5 obs

○ 2008-03-17 04:23:08
● 2015-08-01 09:25:30
● 2017-09-03 13:09:18
○ 2026-06-24 23:55:34
○ 2026-08-01 15:59:36

○NSns52.domaincontrol.com2015-08-01 → 2017-09-03 · 5 obs

○ 2008-03-17 04:23:08
● 2015-08-01 09:25:30
● 2017-09-03 13:09:18
○ 2026-06-24 23:55:34
○ 2026-08-01 15:59:36

●NSroan.ns.cloudflare.com2026-06-24 → 2026-08-01 · 3 obs

○ 2017-09-03 13:09:18
● 2026-06-24 23:55:34
● 2026-08-01 15:59:36

○MXcollegecodex.com2008-03-17 → 2008-03-17 · 3 obs

● 2008-03-17 04:23:08
○ 2015-08-01 09:25:30
○ 2026-08-01 15:59:36

●MXmailstore1.secureserver.net2015-08-01 → 2026-08-01 · 3 obs

○ 2008-03-17 04:23:08
● 2015-08-01 09:25:30
● 2026-08-01 15:59:36

●MXsmtp.secureserver.net2015-08-01 → 2026-08-01 · 3 obs

○ 2008-03-17 04:23:08
● 2015-08-01 09:25:30
● 2026-08-01 15:59:36

●A104.21.63.422026-06-24 → 2026-08-01 · 3 obs

○ 2017-09-03 13:09:18
● 2026-06-24 23:55:34
● 2026-08-01 15:59:36

●A172.67.143.172026-06-24 → 2026-08-01 · 3 obs

○ 2017-09-03 13:09:18
● 2026-06-24 23:55:34
● 2026-08-01 15:59:36

●A2606:4700:3033::6815:3f2a2026-06-24 → 2026-08-01 · 3 obs

○ 2017-09-03 13:09:18
● 2026-06-24 23:55:34
● 2026-08-01 15:59:36

●A2606:4700:3035::ac43:8f112026-06-24 → 2026-08-01 · 3 obs

○ 2017-09-03 13:09:18
● 2026-06-24 23:55:34
● 2026-08-01 15:59:36

○A66.228.124.1712008-03-17 → 2008-03-17 · 3 obs

● 2008-03-17 04:23:08
○ 2015-08-01 09:25:30
○ 2026-08-01 15:59:36

○A72.167.131.82015-08-01 → 2017-09-03 · 5 obs

○ 2008-03-17 04:23:08
● 2015-08-01 09:25:30
● 2017-09-03 13:09:18
○ 2026-06-24 23:55:34
○ 2026-08-01 15:59:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	g.gtld-servers.net, b.gtld-servers.net, h.gtld-servers.net, c.gtld-servers.net...	-
collegecodex.com	angela.ns.cloudflare.com, roan.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.226

NS records: angela.ns.cloudflare.com, roan.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 198ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.143.17, 104.21.63.42`
AAAA	2	`2606:4700:3033::6815:3f2a, 2606:4700:3035::ac43:8f11`
NS	2	`angela.ns.cloudflare.com, roan.ns.cloudflare.com`
MX	2	`smtp.secureserver.net (pri: 0), mailstore1.secureserver.net (pri: 10)`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`angela.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

collegecodex.com has four IP addresses: 104.21.63.42, 172.67.143.17, 2606:4700:3033::6815:3f2a and 2606:4700:3035::ac43:8f11.

Among the host names that share IP numbers with collegecodex.com are kavoki.nl, speazlebud.com, yso4y9.cimarroncanyon.com and two others.

Name Servers

collegecodex.com is delegated to two name servers: angela.ns.cloudflare.com and roan.ns.cloudflare.com.

collegecodex.com has the same name server delegation as a number of other domains, such as honeytoonx.com, sebo.co.uk, flation.info and two more.

collegecodex.com has at least partial name server overlap with other domains, such as guestposttracker.com, caledonianschool.com, ikolesa-darom.com and two others.

It is common to find these name servers paired with the name servers ben.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

angela.ns.cloudflare.com resolves to 108.162.192.65, 172.64.32.65, 173.245.58.65 and 3 other IP addresses.

roan.ns.cloudflare.com resolves to 108.162.193.226, 172.64.33.226, 173.245.59.226 and 3 other IP addresses.

Mail Servers

The MX records for collegecodex.com point to two mail servers: mailstore1.secureserver.net and smtp.secureserver.net.

collegecodex.com has the same mail server arrangement as a number of other domains, for example pernotinc.net, diashon.com, supplyhouse.tv and two more.

collegecodex.com has mail servers in common with other domains — for example petinsure.co and mylaxmii.com.

mailstore1.secureserver.net and smtp.secureserver.net each have three IP addresses — mailstore1.secureserver.net directs to 216.69.141.78, 216.69.141.114 and 216.69.141.162; smtp.secureserver.net directs to 216.69.141.71, 216.69.141.84 and 216.69.141.113.

collegecodex.com - robtex.com