3751.dk

📜 Historical scan 2026-06-22 20:10:12 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

3751.dk is a .dk domain with no delegation in this scan. It was registered on 22 August 2002 (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#

🖥️

No NS records found

🌍 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 2026-10-12 21:11:21

www CNAME	3751.dk (all on 3751.dk) → 37.128.208.15 (AS39642)
www vs bare domain	Same network 3751.dk: 37.128.208.15 (AS39642) www.3751.dk: 37.128.208.15 (AS39642)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔗 TLSA / DANE#

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

🔐 DNSSEC#

286ms

Check	Result
Validation Status	Not applicable: the domain has no delegation, so there is no zone to validate (stored verdict: ❓ Unknown).
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 2026-10-14 20:19:27

Field	Value
Registrar	ONE.COM A/S
Registered	2002-08-22
Expires	2027-09-30 (348d)

🔗 Same registrant#

0 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

200ms

164ms

186ms

AAAA

170ms

TXT

272ms

CAA

169ms

HTTPS

192ms

TLSA

16ms

SOA

192ms

MTA-STS

192ms

DNSSEC

286ms

SRV

201ms

Total

1091ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-16 10:54:41	1371ms	2 NS 1 A 4 MX	🔒 Secure
2026-10-12 21:11:21	948ms	2 NS 1 A 4 MX	🔒 Secure
2026-10-03 07:31:57	462ms	2 NS 1 A 4 MX	🔒 Secure
2026-09-16 10:36:12	700ms	2 NS 1 A 4 MX	🔒 Secure
2026-09-10 23:00:24	1002ms	2 NS 1 A 4 MX	🔒 Secure
2026-08-23 04:04:22	5280ms	2 NS 1 A 4 MX	🔒 Secure
2026-08-22 03:48:52	1158ms	2 NS 1 A 4 MX	🔒 Secure
2026-08-11 15:44:12	954ms	2 NS 1 A 4 MX	🔒 Secure
2026-07-13 06:03:12	979ms	2 NS 1 A 4 MX	🔒 Secure
2026-07-02 13:48:12	9657ms	2 NS 1 A 4 MX	🔒 Secure
2026-06-23 21:18:33	875ms	2 NS 1 A 4 MX	⚠️ Bogus
2026-06-22 20:10:12 shown	1091ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-22 04:12:31	631ms	2 NS 1 A 4 MX	🔒 Secure
2026-06-16 13:12:40	951ms	2 NS 1 A 4 MX	🔒 Secure