ser.dk

📜 Historical scan 2026-06-18 03:25:04 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

ser.dk is a .dk domain served by 2 nameservers (ns1.itmaster.net, ns2.itmaster.net). It was registered on 15 October 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mail.itmaster.net. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 162ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.itmaster.net	162.55.22.237	web1.itmaster.net	AS24940 Hetzner Online GmbH
ns2.itmaster.net	65.108.58.212	ns2.itmaster.net	AS24940 Hetzner Online GmbH

🌍 A Records#

1 records 143ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
162.55.22.237	—	web1.itmaster.net	AS24940	—	—	—	—

📧 MX Records#

1 records 166ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	mail.itmaster.net	142.132.131.220 2a01:4f8:272:2809::5	mail.itmaster.net mail.itmaster.net	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 247ms

Service	Priority	Weight	Port	Target
_imaps._tcp	0	5	143	mail.itmaster.net

📝 TXT Records#

1 records 459ms

TXT Record
v=spf1 +a +mx +a:spf.itmaster.net -all

✉️ SPF#

Policy	Record (ser.dk)
-all (hard fail)	v=spf1 +a +mx +a:spf.itmaster.net -all

📨 DMARC#

Policy	Record (_dmarc.ser.dk)
p=quarantine	v=DMARC1; p=quarantine; adkim=s; aspf=s

📬 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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-10 01:47:23

www CNAME	ser.dk (all on ser.dk) → 162.55.22.237 (AS24940)
www vs bare domain	Same network ser.dk: 162.55.22.237 (AS24940) www.ser.dk: 162.55.22.237 (AS24940)
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
default	—	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

261ms

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

🏷️ SOA#

177ms

Field	Value
Serial	2024041701
Primary NS (MNAME)	ns1.itmaster.net
Responsible (RNAME)	vp@infrequent.group
Refresh	3600s
Retry	600s
Expire	1209600s
Minimum (neg-cache TTL)	10800s

📋 Registration#

WHOIS fetched 2026-10-15 13:03:34

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2023-10-15
Expires	2027-10-14 (362d)

🔗 Same registrant#

4 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
morvea.dk	Punktum dk A/S (direct)
pahuus.dk	Punktum dk A/S (direct)
radiolort.dk	Punktum dk A/S (direct)
xso.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

162ms

143ms

166ms

AAAA

189ms

TXT

459ms

CAA

182ms

HTTPS

240ms

TLSA

353ms

SOA

177ms

MTA-STS

153ms

DNSSEC

261ms

SRV

247ms

Total

2357ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 06:34:22	895ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-24 06:51:43	2649ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-01 17:40:20	1085ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-26 07:46:13	761ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-18 03:25:04 shown	2357ms	2 NS 1 A 1 MX	🔓 Insecure