`professorfinder.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:d844^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3032::6815:10e0^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.16.224^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.216.68^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`colin.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c4b^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`colin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c34b^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`colin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:234b^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`colin.ns.cloudflare.com`
		A	108.162.195.75^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	162.159.44.75^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.64.35.75^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`val.ns.cloudflare.com`
		A	2606:4700:50::adf5:3aea^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`val.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0ea^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`val.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20ea^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`val.ns.cloudflare.com`
		A	108.162.192.234^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`val.ns.cloudflare.com`
		A	172.64.32.234^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`val.ns.cloudflare.com`
		A	173.245.58.234^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`val.ns.cloudflare.com`
MX	`route3.mx.cloudflare.net` ⭐
		A	2606:4700:f5::11^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::12^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::13^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.23^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.24^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.25^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
MX	`route2.mx.cloudflare.net`⁽⁸¹⁾
		A	2606:4700:f5::e^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::f^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::10^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.17^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.18^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.19^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
MX	`route1.mx.cloudflare.net`⁽⁹⁴⁾
		A	2606:4700:f5::b^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::c^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::d^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.11^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.12^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.13^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
TXT	`c194ca145b0fe3d60421a8738854edc815071ed6`
TXT	`google-site-verification=eggan_oNnPiJ1VlNoJ8RIWT6NhifQSQauE5PI4xjdOI`
TXT	`v=spf1 include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.16.224, 172.67.216.68
		IPv6 hints	2606:4700:3031::ac43:d844, 2606:4700:3032::6815:10e0
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=71, name=cloudflare-ech.com
SOA	`colin.ns.cloudflare.com`dns@cloudflare.com serial=2407599496

`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=1782786351

Same first word

professorfinder.com

DNS History

14 records (9 active, 5 former)

●NScolin.ns.cloudflare.com2026-03-14 → 2026-06-30 · 3 obs

○ 2016-04-26 15:40:38
● 2026-03-14 03:09:40
● 2026-06-30 02:28:14

○NSns1.dreamhost.com2015-06-09 → 2016-01-22 · 4 obs

● 2015-06-09 08:14:20
● 2016-01-22 09:13:58
○ 2016-04-26 15:40:38
○ 2026-06-30 02:28:14

○NSns2.dreamhost.com2015-06-09 → 2016-01-22 · 4 obs

● 2015-06-09 08:14:20
● 2016-01-22 09:13:58
○ 2016-04-26 15:40:38
○ 2026-06-30 02:28:14

○NSns3.dreamhost.com2015-06-09 → 2016-01-22 · 4 obs

● 2015-06-09 08:14:20
● 2016-01-22 09:13:58
○ 2016-04-26 15:40:38
○ 2026-06-30 02:28:14

●NSval.ns.cloudflare.com2026-03-14 → 2026-06-30 · 3 obs

○ 2016-04-26 15:40:38
● 2026-03-14 03:09:40
● 2026-06-30 02:28:14

●MXroute1.mx.cloudflare.net2026-03-14 → 2026-06-30 · 2 obs

● 2026-03-14 03:09:40
● 2026-06-30 02:28:14

●MXroute2.mx.cloudflare.net2026-03-14 → 2026-06-30 · 2 obs

● 2026-03-14 03:09:40
● 2026-06-30 02:28:14

●MXroute3.mx.cloudflare.net2026-03-14 → 2026-06-30 · 2 obs

● 2026-03-14 03:09:40
● 2026-06-30 02:28:14

●A104.21.16.2242026-06-30 → 2026-06-30 · 2 obs

○ 2026-03-26 18:36:58
● 2026-06-30 02:28:14

●A172.67.216.682026-06-30 → 2026-06-30 · 2 obs

○ 2026-03-26 18:36:58
● 2026-06-30 02:28:14

○A173.236.157.1292015-06-09 → 2016-01-22 · 4 obs

● 2015-06-09 08:14:20
● 2016-01-22 09:13:58
○ 2016-04-26 15:40:38
○ 2026-06-30 02:28:14

●A2606:4700:3031::ac43:d8442026-06-30 → 2026-06-30 · 2 obs

○ 2026-03-26 18:36:58
● 2026-06-30 02:28:14

●A2606:4700:3032::6815:10e02026-06-30 → 2026-06-30 · 2 obs

○ 2026-03-26 18:36:58
● 2026-06-30 02:28:14

○A64.227.110.1672026-03-14 → 2026-03-26 · 4 obs

○ 2016-04-26 15:40:38
● 2026-03-14 03:09:40
● 2026-03-26 18:36:58
○ 2026-06-30 02:28:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, j.gtld-servers.net, g.gtld-servers.net, i.gtld-servers.net...	-
professorfinder.com	val.ns.cloudflare.com, colin.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.234

NS records: val.ns.cloudflare.com, colin.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 207ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.216.68, 104.21.16.224`
AAAA	2	`2606:4700:3032::6815:10e0, 2606:4700:3031::ac43:d844`
NS	2	`colin.ns.cloudflare.com, val.ns.cloudflare.com`
MX	3	`route3.mx.cloudflare.net (pri: 29), route2.mx.cloudflare.net (pri: 81)...`
TXT	3	`c194ca145b0fe3d60421a8738854edc815071ed6, google-site-verification=eggan_oNnPiJ1Vl...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`colin.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

professorfinder.com has four IP addresses: 104.21.16.224, 172.67.216.68, 2606:4700:3031::ac43:d844 and 2606:4700:3032::6815:10e0.

Additional host names — corevipmarket.com, vinted.373773.click, foxi.ro and two others — share IP numbers with professorfinder.com.

Name Servers

professorfinder.com uses two name servers for its delegation: colin.ns.cloudflare.com and val.ns.cloudflare.com.

The domains selko.org, yourhomesuite.com, yomemo.com and ictp.travel share a common name server delegation with professorfinder.com.

professorfinder.com has at least partial name server overlap with other domains, such as wobwire.com, xh-mega.com, 499839.com and two others.

It is common to find these name servers paired with the name servers amanda.ns.cloudflare.com, noor.ns.cloudflare.com, laylah.ns.cloudflare.com and meg.ns.cloudflare.com.

Host names with 6 IP numbers:

Hostname colin.ns.cloudflare.com directs to 108.162.195.75, 162.159.44.75 and 172.64.35.75 along with 3 other IP addresses.

Hostname val.ns.cloudflare.com directs to 108.162.192.234, 172.64.32.234 and 173.245.58.234 along with 3 other IP addresses.

Mail Servers

professorfinder.com has three mail servers: route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

professorfinder.com shares mail servers — at least in part — with other domains, including clyracore.com, simplesomething.com, insignal.co and two others.

Host names with 6 IP numbers:

Hostname route1.mx.cloudflare.net directs to 162.159.205.11, 162.159.205.12 and 162.159.205.13 along with 3 other IP addresses.

Hostname route2.mx.cloudflare.net directs to 162.159.205.17, 162.159.205.18 and 162.159.205.19 along with 3 other IP addresses.

Hostname route3.mx.cloudflare.net directs to 162.159.205.23, 162.159.205.24 and 162.159.205.25 along with 3 other IP addresses.

professorfinder.com - robtex.com