sejlerakademi.dk

📜 Historical scan 2026-06-25 01:05:20 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sejlerakademi.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 but currently fails validation, 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 50ms

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 2026-10-04 04:01:24

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#

224ms

Check	Result
Validation Status	⚠️ Bogus
AD Flag (resolver validates)	✗ Not set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: failure

🏷️ SOA#

88ms

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 04:30:57

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

📋 WHOIS#

⏱️ Lookup Timing#

50ms

51ms

104ms

AAAA

51ms

TXT

339ms

CAA

45ms

HTTPS

51ms

TLSA

41ms

SOA

88ms

MTA-STS

90ms

DNSSEC

224ms

SRV

341ms

Total

699ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-19 02:49:42	225ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-18 01:18:07	126ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-17 01:11:27	404ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-15 23:22:43	321ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-14 20:55:04	380ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-13 20:03:41	137ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-12 19:23:14	100ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-11 18:24:14	214ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-10 15:21:19	108ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-09 12:58:23	566ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-09 06:29:28	705ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-08 06:28:08	257ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-07 06:27:02	115ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-06 04:08:13	585ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-04 04:01:24	326ms	3 NS 0 A 0 MX	🔒 Secure
2026-10-02 23:56:01	323ms	3 NS 0 A 0 MX	🔒 Secure
2026-09-14 04:41:26	451ms	3 NS 0 A 0 MX	🔒 Secure
2026-06-29 08:51:22	469ms	3 NS 0 A 0 MX	🔒 Secure
2026-06-25 01:05:20 shown	699ms	3 NS 0 A 0 MX	⚠️ Bogus
2026-06-18 03:32:13	479ms	3 NS 0 A 0 MX	🔒 Secure