sejlerakademiet.dk

📜 Historical scan 2026-09-30 07:45:00 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sejlerakademiet.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 3 October 2022 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. 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#

3 records 36ms

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

🌍 A Records#

🌍

No A records found

📧 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 Records#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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 2026-10-02 08:07:28

www	NXDOMAIN
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

🔗 TLSA / DANE#

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

🔐 DNSSEC#

55ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2022100303
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 2026-10-06 10:10:40

Field	Value
Registrar	Simply.com A/S
Registered	2022-10-03
Expires	2026-10-02 (expired)

📋 WHOIS#

⏱️ Lookup Timing#

36ms

31ms

44ms

AAAA

50ms

TXT

117ms

CAA

31ms

HTTPS

31ms

TLSA

48ms

SOA

0ms

MTA-STS

40ms

DNSSEC

55ms

SRV

47ms

Total

408ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-28 06:29:42	120ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-26 09:41:54	102ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-25 04:19:36	335ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-23 08:22:33	105ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-21 21:12:55	146ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-19 12:10:26	332ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-18 11:13:03	349ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-17 10:42:21	234ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-16 09:47:05	410ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-15 04:24:05	124ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-14 03:46:02	360ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-13 00:22:28	360ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-11 21:54:01	419ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-10 18:46:45	316ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-09 18:16:49	207ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-08 11:15:17	276ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-07 11:11:26	114ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-06 09:58:06	1688ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-02 08:07:28	268ms	3 NS 0 A 0 MX	🔒 Secure
2026-09-30 07:45:00 shown	408ms	3 NS 0 A 0 MX	🔒 Secure
2026-09-25 03:50:20	376ms	3 NS 0 A 0 MX	🔒 Secure
2026-08-27 01:45:53	578ms	3 NS 0 A 0 MX	🔒 Secure
2026-06-25 00:16:08	527ms	3 NS 0 A 0 MX	🔒 Secure
2026-06-24 10:00:48	940ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-18 03:43:50	497ms	3 NS 0 A 0 MX	🔒 Secure