certusit.dk

📜 Historical scan 2026-09-29 05:56:36 · ← Latest scan

🚫 Deactivated by the registry ⬇ Zone File 📜 Timeline & History ⚡ Scan Now

certusit.dk is a .dk domain the registry has taken out of service: it is delegated to the registry's own sentinel nameservers (nonexistent.punktum.dk), so it does not resolve. It was registered on 26 September 2022 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. 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#

1 records 50ms

Nameserver	IP addresses	PTR	ASN / ISP
nonexistent.punktum.dk	—	—	—

🌍 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

🔗 TLSA / DANE#

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

🔐 DNSSEC#

125ms

Check	Result
Validation Status	❓ Unknown (the delegated nameservers don't answer)
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: failure

🏷️ SOA#

✗ No SOA record found

📋 Registration#

WHOIS fetched 2026-09-30 14:40:07

Field	Value
Registrar	Simply.com A/S
Registered	2022-09-26
Expires	2026-09-25 (expired)

📋 WHOIS#

⏱️ Lookup Timing#

50ms

48ms

55ms

AAAA

53ms

TXT

107ms

CAA

48ms

HTTPS

55ms

TLSA

17ms

SOA

45ms

MTA-STS

65ms

DNSSEC

125ms

SRV

57ms

Total

770ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-23 02:56:14	192ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-22 01:44:33	103ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-20 20:10:18	218ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-19 17:35:37	386ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-18 16:32:29	101ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-17 16:29:58	221ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-16 15:25:44	104ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-15 15:01:01	265ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-14 12:41:25	295ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-13 08:31:24	95ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-12 07:57:18	229ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-11 04:47:55	161ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-10 04:40:36	446ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-09 03:40:34	716ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-08 03:40:03	211ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-07 03:24:24	431ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-06 02:30:17	368ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-05 02:28:39	241ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-04 02:10:31	157ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-03 02:09:03	704ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-02 02:07:30	250ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-01 02:04:09	589ms	1 NS 0 A 0 MX	❓ Unknown
2026-09-30 01:57:46	756ms	1 NS 0 A 0 MX	❓ Unknown
2026-09-29 05:56:36 shown	770ms	1 NS 0 A 0 MX	❓ Unknown
2026-09-28 05:37:54	828ms	4 NS 1 A 1 MX	🔒 Secure