mail.rt16.dk - robtex.com

mail.rt16.dk

DNSSEC⚠️ Not signed
A2606:4700:3031::ac43:b540🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3032::6815:1253🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.18.83Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.181.64🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.18.83, 172.67.181.64
IPv62606:4700:3031::ac43:b540, 2606:4700:3032::6815:1253

rt16.dk

DNSSEC⚠️ Not signed
A2606:4700:3031::ac43:b540🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3032::6815:1253🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.18.83Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.181.64🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSbarbara.ns.cloudflare.com ⭐
NSdan.ns.cloudflare.com
MX_dc-mx.dedbb0891118.rt16.dk ⭐
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.18.83, 172.67.181.64
IPv62606:4700:3031::ac43:b540, 2606:4700:3032::6815:1253
SOAbarbara.ns.cloudflare.comdns@cloudflare.com serial=2399157487
WOT: SAFE (50/100)
WOT: SAFE (34/100)

Previously MX for

rt16.dk

Same first word

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DNS History

5 records (4 active, 1 former)

A104.21.18.83172.67.181.642606:4700:3031::ac43:b5402606:4700:3032::6815:1253188.34.160.163
●A104.21.18.832026-03-14 → 2026-03-28 · 2 obs
● 2026-03-14 12:42:24
● 2026-03-28 07:48:00
●A172.67.181.642026-03-14 → 2026-03-28 · 2 obs
● 2026-03-14 12:42:24
● 2026-03-28 07:48:00
○A188.34.160.1632026-03-14 → 2026-03-28 · 2 obs
○ 2026-03-14 12:42:24
○ 2026-03-28 07:48:00
●A2606:4700:3031::ac43:b5402026-03-14 → 2026-03-28 · 2 obs
● 2026-03-14 12:42:24
● 2026-03-28 07:48:00
●A2606:4700:3032::6815:12532026-03-14 → 2026-03-28 · 2 obs
● 2026-03-14 12:42:24
● 2026-03-28 07:48:00

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dkb.nic.dk, c.nic.dk, h.nic.dk, l.nic.dk...-
rt16.dkdan.ns.cloudflare.com, barbara.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.32.248

NS records: dan.ns.cloudflare.com, barbara.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rt16.dk (unsigned zone)

⏱️ Timing

Total: 1752ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.181.64, 104.21.18.83
AAAA22606:4700:3032::6815:1253, 2606:4700:3031::ac43:b540
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

Four IP numbers are pointed to by mail.rt16.dk: 2606:4700:3031::ac43:b540, 2606:4700:3032::6815:1253, 104.21.18.83 and 172.67.181.64.

other host names including mail.1049theeagle.com, ncrponline.org, donrscheidt.com, 888bjl99.com and tankefronten.se share IP numbers with mail.rt16.dk.