zer.dk

📜 Historical scan 2026-10-01 18:41:05 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

zer.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 17 November 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is DNSSEC-signed and validates, has no 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#

4 records 323ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

🌍

No A records found

📧 MX Records#

5 records 387ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	173.194.221.27 2a00:1450:4010:c02::1a 2a00:1450:4010:c02::1a	lm-in-f27.1e100.net le-in-x1a.1e100.net le-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.com	192.178.158.26 2404:6800:4013:813::1a	lcdels-in-f26.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt2.aspmx.l.google.com	173.194.41.27 173.194.41.27 2404:6800:4001:c01::1b	mad01s14-in-f27.1e100.net yukulwh-in-f27.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	3600s	alt3.aspmx.l.google.com	172.253.158.26 2404:6800:4003:c26::1a	so-in-f26.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt4.aspmx.l.google.com	108.177.125.26 2404:6800:4008:c01::1b	tp-in-f26.1e100.net tp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 667ms

TXT Record
v=spf1 include:_spf.google.com ~all

✉️ SPF#

Policy	Record (zer.dk)
~all (soft fail)	v=spf1 include:_spf.google.com ~all

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 2026-10-12 22:58:03

www	NXDOMAIN
www vs bare domain	Neither resolves zer.dk: no address www.zer.dk: no address
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

634ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

250ms

Field	Value
Serial	2026093000
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-12 23:18:50

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2016-11-17
Expires	2028-11-30 (773d)

🔗 Same registrant#

2 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
bystedparken.dk	Punktum dk A/S (direct)
herworld.dk	Simply.com A/S

📋 WHOIS#

⏱️ Lookup Timing#

323ms

302ms

387ms

AAAA

495ms

TXT

667ms

CAA

312ms

HTTPS

276ms

TLSA

109ms

SOA

250ms

MTA-STS

597ms

DNSSEC

634ms

SRV

535ms

Total

2244ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 22:58:03	648ms	4 NS 0 A 5 MX	🔒 Secure
2026-10-01 18:41:05 shown	2244ms	4 NS 0 A 5 MX	🔒 Secure
2026-09-30 18:27:25	956ms	4 NS 0 A 5 MX	🔒 Secure
2026-09-08 14:49:06	634ms	4 NS 0 A 5 MX	🔒 Secure
2026-08-28 08:16:05	931ms	4 NS 0 A 5 MX	🔒 Secure
2026-08-25 15:57:41	605ms	4 NS 0 A 5 MX	🔒 Secure
2026-08-14 23:40:50	17383ms	4 NS 0 A 5 MX	🔒 Secure
2026-06-27 13:38:28	1759ms	4 NS 0 A 5 MX	🔒 Secure
2026-06-17 15:27:46	2858ms	4 NS 0 A 5 MX	🔒 Secure