4x81.dk

📜 Historical scan 2026-06-16 12:55:48 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

4x81.dk is a .dk domain served by 2 nameservers (ns.dandomain.dk, ns2.dandomain.dk). It was registered on 23 February 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 212.237.249.17 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx1.dandomain.dk, mx2.dandomain.dk. 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#

2 records 66ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.dandomain.dk	—	—	—
ns2.dandomain.dk	—	—	—

🌍 A Records#

1 records 63ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
212.237.249.17	—	splash.dandomain.dk	AS48854	team.blue Denmark A/S	212.237.248.0/23	🇩🇰 Denmark	—

📧 MX Records#

2 records 56ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	mx1.dandomain.dk	212.237.249.50	mx1.dandomain.dk	AS48854 team.blue Denmark A/S
20	—	mx2.dandomain.dk	46.36.209.11	mx2.dandomain.dk	AS48854 team.blue Denmark A/S

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 201ms

TXT Record
v=spf1 include:spf.dandomain.dk -all

✉️ SPF#

Policy	Record (4x81.dk)
-all (hard fail)	v=spf1 include:spf.dandomain.dk -all

📨 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 2026-10-08 14:42:55

www	212.237.249.17 (AS48854) (address records, no CNAME)
www vs bare domain	Same network 4x81.dk: 212.237.249.17 (AS48854) www.4x81.dk: 212.237.249.17 (AS48854)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

198ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

60ms

Field	Value
Serial	2024022304
Primary NS (MNAME)	ns.dandomain.dk
Responsible (RNAME)	hostmaster@dandomain.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-08 01:57:07

Field	Value
Registrar	DANDOMAIN A/S
Registered	2024-02-23
Expires	2027-02-22 (126d)

📋 WHOIS#

⏱️ Lookup Timing#

66ms

63ms

56ms

AAAA

52ms

TXT

201ms

CAA

79ms

HTTPS

60ms

TLSA

146ms

SOA

60ms

MTA-STS

63ms

DNSSEC

198ms

SRV

0ms

Total

1195ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-24 11:42:25	2310ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-26 10:29:57	848ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-16 12:59:11	1317ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-16 12:55:48 shown	1195ms	2 NS 1 A 2 MX	🔒 Secure