guru.dk

📜 Historical scan 2026-07-21 02:43:06 · ← Latest scan

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

guru.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 12 August 2026 (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 53ms

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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-21 12:55:45

www	157.250.160.25 (AS3342) (address records, no CNAME)
www vs bare domain	Same network guru.dk: 157.250.160.25 (AS3342) www.guru.dk: 157.250.160.25 (AS3342)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔗 TLSA / DANE#

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

🔐 DNSSEC#

124ms

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 2026-10-16 14:58:18

Field	Value
Registrar	WEBHOSTING A/S
Registered	2026-08-12
Expires	2027-08-11 (293d)

📋 WHOIS#

⏱️ Lookup Timing#

53ms

36ms

64ms

AAAA

82ms

TXT

137ms

CAA

82ms

HTTPS

59ms

TLSA

25ms

SOA

28ms

MTA-STS

112ms

DNSSEC

124ms

SRV

98ms

Total

718ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-21 12:55:45	561ms	5 NS 1 A 1 MX	🔓 Insecure
2026-10-01 00:14:35	2005ms	5 NS 1 A 1 MX	🔓 Insecure
2026-09-30 10:14:41	454ms	5 NS 1 A 1 MX	🔓 Insecure
2026-09-25 13:57:34	9552ms	5 NS 1 A 1 MX	🔓 Insecure
2026-09-01 22:39:30	633ms	5 NS 1 A 1 MX	🔓 Insecure
2026-08-13 08:41:53	1513ms	5 NS 1 A 1 MX	🔓 Insecure
2026-08-02 02:33:35	753ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-31 13:41:39	8561ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-29 20:18:32	780ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-28 12:51:38	9741ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-27 06:25:13	8819ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-26 06:11:00	806ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-25 05:45:31	687ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-24 05:25:48	8631ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-23 05:08:53	544ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-22 03:32:18	8575ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-21 02:43:06 shown	718ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-19 17:22:08	628ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-18 14:25:59	1698ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-17 04:23:04	802ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-14 14:46:56	801ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-08 13:42:21	720ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-06 21:32:28	8898ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-05 00:14:01	565ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-03 23:42:08	2425ms	1 NS 0 A 0 MX	❓ Unknown