4ch.dk

📜 Historical scan 2026-08-31 21:59:28 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

4ch.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 24 January 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.109.64.18 is hosted by BornFiber Service Provider ApS (AS24800) in Denmark. Mail is handled by 4ch-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a 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 25ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 25ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.109.64.18	43200s	4ch.dk	AS24800	BornFiber Service Provider ApS	185.109.64.0/22	🇩🇰 Denmark	Hasle

📧 MX Records#

1 records 25ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	4ch-dk.mail.protection.outlook.com	2a01:111:f403:ca04::b 2a01:111:f403:ca04::d 2a01:111:f403:ca09::1 2a01:111:f403:ca09::e 52.101.68.18 52.101.68.25 52.101.68.39 52.101.73.28	mail-dbbpr03cu00103.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-am7pr05cu00206.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-am7pr05cu00204.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.56

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 40ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	0	1	5061	sipfed.online.lync.com

📝 TXT Records#

2 records 126ms

TXT Record
ms58635878
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (4ch.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.4ch.dk)
p=quarantine	v=DMARC1; p=quarantine;

📬 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 2026-10-09 23:35:22

www	185.109.64.18 (AS24800) (address records, no CNAME)
www vs bare domain	Same network 4ch.dk: 185.109.64.18 (AS24800) www.4ch.dk: 185.109.64.18 (AS24800)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.4ch.dk	50ZD1BjM91Mxroc0kBhja8uwTIBYysjr-cLxuQ2OOMA

🔗 TLSA / DANE#

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

🔐 DNSSEC#

95ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026083001
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-16 15:30:49

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2002-01-24
Expires	2027-03-31 (165d)

🔗 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#

25ms

AAAA

24ms

TXT

126ms

CAA

23ms

HTTPS

31ms

TLSA

690ms

SOA

0ms

MTA-STS

35ms

DNSSEC

95ms

SRV

40ms

Total

1184ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 19:23:47	1457ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 19:20:39	773ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-31 21:59:28 shown	1184ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-29 18:56:35	1132ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-06 03:50:48	2193ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-30 19:20:49	757ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 12:47:08	837ms	2 NS 1 A 1 MX	🔒 Secure