4o.dk

📜 Historical scan 2026-09-24 02:07:58 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

4o.dk is a .dk domain served by 2 nameservers (melinda.ns.cloudflare.com, tom.ns.cloudflare.com). It was registered on 20 December 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.5.54.181 is hosted by UAB Interneto vizija (AS212531) in Lithuania. Mail is handled by mail.4o.dk. The zone is not DNSSEC-signed, 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 40ms

Nameserver	IP addresses	PTR	ASN / ISP
melinda.ns.cloudflare.com	108.162.192.198 172.64.32.198 173.245.58.198 2606:4700:50::adf5:3ac6 2803:f800:50::6ca2:c0c6 2a06:98c1:50::ac40:20c6	melinda.ns.cloudflare.com melinda.ns.cloudflare.com melinda.ns.cloudflare.com melinda.ns.cloudflare.com melinda.ns.cloudflare.com melinda.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
tom.ns.cloudflare.com	108.162.193.147 172.64.33.147 173.245.59.147 2606:4700:58::adf5:3b93 2803:f800:50::6ca2:c193 2a06:98c1:50::ac40:2193	tom.ns.cloudflare.com tom.ns.cloudflare.com tom.ns.cloudflare.com tom.ns.cloudflare.com tom.ns.cloudflare.com tom.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

1 records 34ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.5.54.181	300s	—	AS212531	UAB Interneto vizija	185.5.52.0/22	🇱🇹 Lithuania	Vilnius

📧 MX Records#

1 records 42ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mail.4o.dk	83.89.250.10	0x5359fa0a.static.cust.fastspeed.dk	AS3292 TDC Holding A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	83.89.250.10
🔶 Autoconfig	83.89.250.10

🔷 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 2026-10-08 16:06:50

www	185.5.54.181 (AS212531) (address records, no CNAME)
www vs bare domain	Same network 4o.dk: 185.5.54.181 (AS212531) www.4o.dk: 185.5.54.181 (AS212531)
Wildcard	Yes: any name under the zone resolves

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.4o.dk	RVF0wVK4_sWymdHJyOkyyEmCxEgd9mgKu0yI9KXhrmk
TXT	_acme-challenge.4o.dk	scJpuGQpPW8IwyxsMKiHq9phvKAttyL5uR_mKUc4NNg

🔗 TLSA / DANE#

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

🔐 DNSSEC#

106ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

0ms

Field	Value
Serial	2415584341
Primary NS (MNAME)	melinda.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-08 07:23:21

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2016-12-20
Expires	2026-12-31 (73d)

📋 WHOIS#

⏱️ Lookup Timing#

40ms

34ms

42ms

AAAA

39ms

TXT

180ms

CAA

38ms

HTTPS

49ms

TLSA

122ms

SOA

0ms

MTA-STS

59ms

DNSSEC

106ms

SRV

65ms

Total

1192ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 16:06:50	927ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-29 21:09:12	742ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-25 13:30:47	616ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-24 13:18:37	2484ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-24 02:07:58 shown	1192ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-19 09:52:11	643ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-27 17:02:31	913ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-29 06:13:40	3518ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-27 13:22:21	875ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-25 12:34:32	1311ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-27 16:58:57	873ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-19 22:03:51	4822ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-19 05:59:06	956ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-16 12:42:23	527ms	2 NS 1 A 1 MX	🔓 Insecure