cb4.dk

📜 Historical scan 2026-06-19 22:51:44  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cb4.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 19 September 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 78.46.48.135 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by mail.cb4.dk, hjp.systemofadown.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   65ms
NameserverIP addressesPTRASN / 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   73ms
IPTTLPTRASNISP / OrgCIDRCountryCity
78.46.48.135 21600s p96n37 AS24940 Hetzner Online GmbH 78.46.0.0/15 🇩🇪 Germany Falkenstein

📧 MX Records#

2 records   63ms
PriorityTTLMail ServerIP addressesPTRASN
10 21600s mail.cb4.dk 78.46.48.135 p96n37 AS24940 Hetzner Online GmbH
50 21600s hjp.systemofadown.dk 185.109.66.162 — AS24800 BornFiber Service Provider ApS

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscovercb4.dk → 78.46.48.135
🔶 Autoconfigcb4.dk → 78.46.48.135

🔷 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 10:48:50
www CNAMEcb4.dk (all on cb4.dk)
www vs bare domainSame network
cb4.dk: 78.46.48.135 (AS24940)
www.cb4.dk: 78.46.48.135 (AS24940)
WildcardYes: any name under the zone resolves
CDS / CDNSKEYNone 0 CDS, 0 CDNSKEY

🔏 ACME Challenge#

TypeNameValue
CNAME _acme-challenge.cb4.dk cb4.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

168ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

71ms
FieldValue
Serial2026030701
Primary NS (MNAME)ns01.one.com
Responsible (RNAME)hostmaster@one.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)600s

📋 Registration#

WHOIS fetched 2026-10-01 05:46:52
FieldValue
RegistrarONE.COM A/S
Registered2007-09-19
Expires2027-09-30 (348d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
65ms
A
73ms
MX
63ms
AAAA
65ms
TXT
535ms
CAA
66ms
HTTPS
64ms
TLSA
114ms
SOA
71ms
MTA-STS
50ms
DNSSEC
168ms
SRV
229ms
Total
1015ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-07 10:36:30 1857ms 2 NS 1 A 2 MX 🔒 Secure
2026-10-01 05:41:35 1304ms 2 NS 1 A 2 MX 🔒 Secure
2026-09-06 11:12:20 882ms 2 NS 1 A 2 MX 🔒 Secure
2026-08-31 20:37:28 915ms 2 NS 1 A 2 MX 🔒 Secure
2026-06-26 18:10:25 812ms 2 NS 1 A 2 MX 🔒 Secure
2026-06-19 22:51:44 shown 1015ms 2 NS 1 A 2 MX 🔒 Secure
2026-06-16 19:50:30 2605ms 2 NS 1 A 2 MX 🔒 Secure
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