st21.dk DNS records

🖥️ Nameservers2 records 73ms

Nameserver	IP addresses	PTR	ASN / ISP
athena.ns.cloudflare.com	108.162.192.72 172.64.32.72 173.245.58.72 2606:4700:50::adf5:3a48 2803:f800:50::6ca2:c048 2a06:98c1:50::ac40:2048	athena.ns.cloudflare.com athena.ns.cloudflare.com athena.ns.cloudflare.com athena.ns.cloudflare.com athena.ns.cloudflare.com athena.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
brodie.ns.cloudflare.com	108.162.195.237 162.159.44.237 172.64.35.237 2606:4700:58::a29f:2ced 2803:f800:50::6ca2:c3ed 2a06:98c1:50::ac40:23ed	brodie.ns.cloudflare.com brodie.ns.cloudflare.com brodie.ns.cloudflare.com brodie.ns.cloudflare.com brodie.ns.cloudflare.com brodie.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records1 records 44ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
91.226.145.173	300s	pmg.st21.dk	AS216275	Netnoerden ApS	91.226.144.0/23	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 75ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	pmg.st21.dk	91.226.145.173	pmg.st21.dk	AS216275 Netnoerden ApS

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	mail.st21.dk → 91.226.145.173
🔶 Autoconfig	91.226.145.173

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 248ms

TXT Record
google-site-verification=nCrSAxOcjdbPZWWQwwln6Fz8SR3DKD1gkO_AB5lMpQI
v=spf1 include:dnsexit.com ip4:91.226.145.173 -all

✉️ SPF

Policy	Record (st21.dk)
-all (hard fail)	v=spf1 include:dnsexit.com ip4:91.226.145.173 -all

📨 DMARC

Policy	Record (_dmarc.st21.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:ipm5q1t@ar.glockapps.com; ruf=mailto:ipm5q1t@fr.glockapps.com; fo=1;

📬 MTA-STS

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records

✗ No CAA records — any CA may issue certificates

🔗 TLSA / DANE

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC131ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✓ Found
Flags	unsigned answer

🏷️ SOA0ms

Field	Value
Serial	2412322117
Primary NS (MNAME)	athena.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

73ms

A

44ms

MX

75ms

AAAA

43ms

TXT

248ms

CAA

53ms

HTTPS

39ms

TLSA

2053ms

SOA

0ms

MTA-STS

106ms

DNSSEC

131ms

SRV

93ms

Total

2889ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 06:16:20	2889ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-08-16 12:15:49	5081ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-08-05 22:14:55	957ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-08-03 02:38:50	1068ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-07-23 18:14:08	7478ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-07-21 14:59:47	1018ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-07-17 11:46:59	901ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-07-01 04:57:21	1333ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-27 22:44:51	769ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-17 12:14:44	1034ms	2 NS 1 A 1 MX	🔓 Insecure	View