`tfeuniversity.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::ac43:b10c^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::6815:1198^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.17.152^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.177.12^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`ruth.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a8f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ruth.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c08f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ruth.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:208f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ruth.ns.cloudflare.com`
		A	108.162.192.143^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ruth.ns.cloudflare.com`
		A	172.64.32.143^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ruth.ns.cloudflare.com`
		A	173.245.58.143^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ruth.ns.cloudflare.com`
NS	`vick.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bf4^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vick.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1f4^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`vick.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21f4^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`vick.ns.cloudflare.com`
		A	108.162.193.244^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vick.ns.cloudflare.com`
		A	172.64.33.244^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vick.ns.cloudflare.com`
		A	173.245.59.244^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vick.ns.cloudflare.com`
MX	`p.webcom.ctmail.com` ⭐
		A	216.163.188.190
TXT	`v=spf1 -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.17.152, 172.67.177.12
		IPv6 hints	2606:4700:3032::ac43:b10c, 2606:4700:3034::6815:1198
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=182, name=cloudflare-ech.com
SOA	`ruth.ns.cloudflare.com`dns@cloudflare.com serial=2408002013

`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=1785366972

Same first word

tfeuniversity.com

DNS History

16 records (7 active, 9 former)

○NSns51.worldnic.com2015-06-23 → 2017-05-17 · 4 obs

● 2015-06-23 20:48:22
● 2017-05-17 22:29:36
○ 2026-02-23 14:27:22
○ 2026-07-29 23:32:54

○NSns52.worldnic.com2015-06-23 → 2017-05-17 · 4 obs

● 2015-06-23 20:48:22
● 2017-05-17 22:29:36
○ 2026-02-23 14:27:22
○ 2026-07-29 23:32:54

●NSruth.ns.cloudflare.com2026-02-23 → 2026-07-29 · 3 obs

○ 2017-05-17 22:29:36
● 2026-02-23 14:27:22
● 2026-07-29 23:32:54

●NSvick.ns.cloudflare.com2026-02-23 → 2026-07-29 · 3 obs

○ 2017-05-17 22:29:36
● 2026-02-23 14:27:22
● 2026-07-29 23:32:54

●MXp.webcom.ctmail.com2016-01-19 → 2026-07-29 · 2 obs

● 2016-01-19 05:21:16
● 2026-07-29 23:32:54

●A104.21.17.1522026-02-23 → 2026-07-29 · 12 obs

○ 2017-05-17 22:29:36
● 2026-02-23 14:27:22
○ 2026-02-24 23:15:06
● 2026-03-04 07:26:30
○ 2026-03-11 14:10:30
● 2026-03-27 22:40:44
● 2026-04-05 04:13:04
○ 2026-04-11 17:55:56
● 2026-05-24 03:50:38
○ 2026-07-23 06:33:50
● 2026-07-28 11:48:16
● 2026-07-29 23:32:54

●A172.67.177.122026-02-23 → 2026-07-29 · 12 obs

○A188.114.96.02026-02-24 → 2026-07-23 · 11 obs

○ 2026-02-23 14:27:22
● 2026-02-24 23:15:06
○ 2026-03-04 07:26:30
● 2026-03-11 14:10:30
○ 2026-03-27 22:40:44
○ 2026-04-05 04:13:04
● 2026-04-11 17:55:56
○ 2026-05-24 03:50:38
● 2026-07-23 06:33:50
○ 2026-07-28 11:48:16
○ 2026-07-29 23:32:54

○A188.114.97.02026-02-24 → 2026-07-23 · 11 obs

○A208.91.197.272015-06-23 → 2017-05-17 · 4 obs

● 2015-06-23 20:48:22
● 2017-05-17 22:29:36
○ 2026-02-23 14:27:22
○ 2026-07-29 23:32:54

●A2606:4700:3032::ac43:b10c2026-07-16 → 2026-07-29 · 5 obs

○ 2026-06-16 16:17:38
● 2026-07-16 04:54:32
○ 2026-07-23 06:33:50
● 2026-07-28 11:48:16
● 2026-07-29 23:32:54

○A2606:4700:3033::6815:11982026-02-23 → 2026-06-16 · 12 obs

○ 2017-05-17 22:29:36
● 2026-02-23 14:27:22
○ 2026-02-24 23:15:06
● 2026-03-04 07:26:30
○ 2026-03-11 14:10:30
● 2026-03-27 22:40:44
● 2026-04-05 04:13:04
○ 2026-04-11 17:55:56
● 2026-05-24 03:50:38
● 2026-06-16 16:17:38
○ 2026-07-16 04:54:32
○ 2026-07-29 23:32:54

●A2606:4700:3034::6815:11982026-07-16 → 2026-07-29 · 5 obs

○ 2026-06-16 16:17:38
● 2026-07-16 04:54:32
○ 2026-07-23 06:33:50
● 2026-07-28 11:48:16
● 2026-07-29 23:32:54

○A2606:4700:3034::ac43:b10c2026-02-23 → 2026-06-16 · 12 obs

○ 2017-05-17 22:29:36
● 2026-02-23 14:27:22
○ 2026-02-24 23:15:06
● 2026-03-04 07:26:30
○ 2026-03-11 14:10:30
● 2026-03-27 22:40:44
● 2026-04-05 04:13:04
○ 2026-04-11 17:55:56
● 2026-05-24 03:50:38
● 2026-06-16 16:17:38
○ 2026-07-16 04:54:32
○ 2026-07-29 23:32:54

○A2a06:98c1:3120::2026-02-24 → 2026-07-23 · 11 obs

○A2a06:98c1:3121::2026-02-24 → 2026-07-23 · 11 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
tfeuniversity.com	ruth.ns.cloudflare.com, vick.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.143

NS records: ruth.ns.cloudflare.com, vick.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for tfeuniversity.com (unsigned zone)

⏱️ Timing

Total: 172ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.177.12, 104.21.17.152`
AAAA	2	`2606:4700:3032::ac43:b10c, 2606:4700:3034::6815:1198`
NS	2	`ruth.ns.cloudflare.com, vick.ns.cloudflare.com`
MX	1	`p.webcom.ctmail.com (pri: 10)`
TXT	1	`v=spf1 -all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`ruth.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

tfeuniversity.com points to the four IP addresses 104.21.17.152, 172.67.177.12, 2606:4700:3032::ac43:b10c and 2606:4700:3034::6815:1198.

Two other host names, along with www.lzshu.cc, korndev.com and katiespencilbox.com, also share IP numbers with tfeuniversity.com.

Name Servers

tfeuniversity.com is served by two delegated name servers, ruth.ns.cloudflare.com and vick.ns.cloudflare.com.

tfeuniversity.com shares its NS records with other domains, for example plumstcrafts.com, cellar48.com, sutterhome.com and two others.

There is at least partial name server overlap between tfeuniversity.com and other domains — catchfonts.com, boldscholarnews.com, fionaoakesfoundation.co.uk and two more among them.

These name servers frequently co-occur with the name servers harmony.ns.cloudflare.com and gloria.ns.cloudflare.com.

DNS names with 6 IP addresses:

ruth.ns.cloudflare.com carries IP addresses 108.162.192.143, 172.64.32.143 and 173.245.58.143, with 3 other addresses beyond those.

vick.ns.cloudflare.com carries IP addresses 108.162.193.244, 172.64.33.244 and 173.245.59.244, with 3 other addresses beyond those.

Mail Servers

The sole mail server for tfeuniversity.com is p.webcom.ctmail.com.

Among the domains sharing a mail server setup with tfeuniversity.com are vaposhop.org, hercalert.com, gaylordskauai.com and two others.

There is one IP number for p.webcom.ctmail.com: 216.163.188.190.

tfeuniversity.com - robtex.com