mail.dgu.dk - robtex.com

mail.dgu.dk

DNSSEC⚠️ Not signed
A2606:4700:3033::6815:c5a🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:c203🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.12.90Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.194.3🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.12.90, 172.67.194.3
IPv6 hints2606:4700:3033::6815:c5a, 2606:4700:3035::ac43:c203
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=7, name=cloudflare-ech.com

dgu.dk

DNSSEC🔒 Signed (DS record present)
A2606:4700:3033::6815:c5a🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:c203🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.12.90Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.194.3🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSfatima.ns.cloudflare.com ⭐
NSryan.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.12.90, 172.67.194.3
IPv6 hints2606:4700:3033::6815:c5a, 2606:4700:3035::ac43:c203
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=7, name=cloudflare-ech.com
SOAfatima.ns.cloudflare.comdns@cloudflare.com serial=2407703190
WOT: SAFE (61/100)

Previously MX for

dgu.dk

Same first word

mail.radio.fm
mail.od.ua
mail.ms
mail.boleslawiec.pl
mail.mydns.vc
mail.lutsk.ua
mail.kz
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DNS History

6 records (4 active, 2 former)

A104.21.12.90172.67.194.32606:4700:3033::6815:c5a2606:4700:3035::ac43:c2032606:4700:3031::ac43:c2032606:4700:3035::6815:c5a
●A104.21.12.902026-05-27 → 2026-07-10 · 2 obs
● 2026-05-27 00:05:58
● 2026-07-10 21:41:06
●A172.67.194.32026-05-27 → 2026-07-10 · 2 obs
● 2026-05-27 00:05:58
● 2026-07-10 21:41:06
○A2606:4700:3031::ac43:c2032026-05-27 → 2026-06-13 · 3 obs
● 2026-05-27 00:05:58
● 2026-06-13 05:12:54
○ 2026-07-10 21:41:06
●A2606:4700:3033::6815:c5a2026-07-10 → 2026-07-10 · 2 obs
○ 2026-06-13 05:12:54
● 2026-07-10 21:41:06
○A2606:4700:3035::6815:c5a2026-05-27 → 2026-06-13 · 3 obs
● 2026-05-27 00:05:58
● 2026-06-13 05:12:54
○ 2026-07-10 21:41:06
●A2606:4700:3035::ac43:c2032026-07-10 → 2026-07-10 · 2 obs
○ 2026-06-13 05:12:54
● 2026-07-10 21:41:06

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dkb.nic.dk, c.nic.dk, h.nic.dk, l.nic.dk...-
dgu.dkfatima.ns.cloudflare.com, ryan.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.35.229

NS records: fatima.ns.cloudflare.com, ryan.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1183ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.194.3, 104.21.12.90
AAAA22606:4700:3035::ac43:c203, 2606:4700:3033::6815:c5a
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

mail.dgu.dk directs to four IP numbers, which are 104.21.12.90, 172.67.194.3, 2606:4700:3033::6815:c5a and 2606:4700:3035::ac43:c203.

Two other host names, along with www.lp.vg, n034.cc and fk-mandalawaluya.ac.id, also share IP numbers with mail.dgu.dk.