4ch.dk DNS records

🖥️ Nameservers2 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 Records1 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 Records1 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 Records1 records 40ms

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

📝 TXT Records2 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

🔏 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)

🔐 DNSSEC95ms

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

🏷️ SOA0ms

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

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

25ms

A

25ms

MX

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
2026-08-31 21:59:28	1184ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-29 18:56:35	1132ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-06 03:50:48	2193ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-30 19:20:49	757ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 12:47:08	837ms	2 NS 1 A 1 MX	🔒 Secure	View