cerber.dk DNS records

🖥️ Nameservers2 records 220ms

Nameserver	IP addresses	PTR	ASN / ISP
ns6.sitnet.dk	107.162.234.197 2604:e180:1071::3:1	— —	AS55002 F5, Inc. AS55002 F5, Inc.
ns7.sitnet.dk	107.162.176.221 2604:e180:1071::ffff:6ba2:b0dd	— —	AS55002 F5, Inc. AS55002 F5, Inc.

🌍 A Records1 records 183ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.153.154.38	3600s	datalogger-test.bygstenergi.dk datalogger.bygstenergi.dk datalogger.xkn.dk demensprisen.dk klagonline.forbrug.dk mitfiskeri.dk parked.sitnet.dk	AS58282	Statens IT	185.153.152.0/22	🇩🇰 Denmark	Copenhagen

📧 MX Records

📧

No MX records found

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 663ms

TXT Record
v=spf1 -all

✉️ SPF

Policy	Record (cerber.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC

Policy	Record (_dmarc.cerber.dk)
p=reject	v=DMARC1; p=reject; sp=reject; rua=mailto:tcod1eh2@ag.eu.dmarcadvisor.com;

📬 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)

🔐 DNSSEC352ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA0ms

Field	Value
Serial	967
Primary NS (MNAME)	sit-dhcp001.prod.sitad.dk
Responsible (RNAME)	hostmaster@statens-it.dk
Refresh	900s
Retry	90s
Expire	2419200s
Minimum (neg-cache TTL)	300s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

220ms

A

183ms

MX

181ms

AAAA

182ms

TXT

663ms

CAA

170ms

HTTPS

218ms

TLSA

150ms

SOA

0ms

MTA-STS

349ms

DNSSEC

352ms

SRV

298ms

Total

1998ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-30 21:33:34	1998ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-29 17:33:17	17724ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-28 16:41:43	1508ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-27 16:05:35	17207ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-26 15:19:18	10261ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-25 07:31:15	16562ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-24 06:49:12	12038ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-23 03:00:54	6978ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-22 02:45:10	13884ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-21 02:40:40	9607ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-20 01:29:10	10895ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-18 22:47:52	2928ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-17 06:19:13	6026ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-15 15:49:32	7041ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-13 14:13:10	17637ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-12 01:24:06	6683ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-10 09:44:05	2772ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-08 18:29:51	13767ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-06 10:40:14	5547ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-07-31 13:40:31	3002ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-07-29 02:32:45	3530ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-07-27 12:21:47	16970ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-07-26 12:01:00	3434ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-07-25 11:52:56	10979ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-07-24 11:45:19	17190ms	2 NS 1 A 0 MX	🔒 Secure	View