sesk.dk

Records from scan: 2026-10-05 21:29:46 · 1153ms total · last checked 2026-10-22 15:46 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sesk.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 18 December 2015 (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 our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 31ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

🌍

No A records found

📧 MX Records#

5 records 34ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	43200s	aspmx.l.google.com	2a00:1450:4010:c0d::1b 2a00:1450:4010:c0d::1b 64.233.164.27	lq-in-x1b.1e100.net lq-in-f27.1e100.net lf-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	43200s	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	43200s	alt2.aspmx.l.google.com	173.194.41.26 173.194.41.26 2404:6800:4001:c01::1b	yukulwh-in-f26.1e100.net mad01s14-in-f26.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	43200s	alt3.aspmx.l.google.com	172.253.158.27 2404:6800:4003:c26::1a	so-in-f27.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	43200s	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#

2 records 132ms

TXT Record
google-site-verification=HaffFyXrcIp6IVOsJW02N9ej0TRYvQe4-fKsP8V003g
v=spf1 include:_spf.google.com ~all

✉️ SPF#

Policy	Record (sesk.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#

checked 2026-10-08 23:11:06

www	46.30.211.38 (AS51468) (address records, no CNAME)
www vs bare domain	Only www resolves sesk.dk: no address www.sesk.dk: 46.30.211.38 (AS51468) (all like this)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 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#

112ms

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

🏷️ SOA#

42ms

Field	Value
Serial	2026100401
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-05 21:55:30

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2015-12-18
Expires	2030-12-31 (1530d)

📋 WHOIS#

⏱️ Lookup Timing#

31ms

34ms

AAAA

32ms

TXT

132ms

CAA

36ms

HTTPS

30ms

TLSA

125ms

SOA

42ms

MTA-STS

42ms

DNSSEC

112ms

SRV

44ms

Total

1153ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-05 21:29:46 shown	1153ms	2 NS 0 A 5 MX	🔒 Secure
2026-09-30 21:00:53	1838ms	2 NS 0 A 5 MX	🔒 Secure
2026-09-29 20:53:17	834ms	2 NS 0 A 5 MX	🔒 Secure
2026-09-26 20:19:44	651ms	2 NS 0 A 5 MX	🔒 Secure
2026-09-06 10:48:15	545ms	2 NS 0 A 5 MX	🔒 Secure
2026-06-25 05:24:26	789ms	2 NS 0 A 5 MX	🔒 Secure
2026-06-22 18:54:27	1156ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 22:23:32	822ms	2 NS 0 A 5 MX	🔒 Secure