cb4.dk

Records from scan: 2026-10-07 10:36:30  ·  1857ms total  ·  last checked 2026-10-16 00:58 (unchanged)
⬇ 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 our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records   37ms
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   39ms
IPTTLPTRASNISP / OrgCIDRCountryCity
78.46.48.135 43200s p96n37 AS24940 Hetzner Online GmbH 78.46.0.0/15 🇩🇪 Germany Falkenstein

📧 MX Records#

2 records   49ms
PriorityTTLMail ServerIP addressesPTRASN
10 43200s mail.cb4.dk 78.46.48.135 p96n37 AS24940 Hetzner Online GmbH
50 43200s 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#

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#

58ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

47ms
FieldValue
Serial2026100601
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
37ms
A
39ms
MX
49ms
AAAA
36ms
TXT
134ms
CAA
37ms
HTTPS
51ms
TLSA
124ms
SOA
47ms
MTA-STS
53ms
DNSSEC
58ms
SRV
57ms
Total
1857ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-07 10:36:30 shown 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 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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