centralbiblioteket.dk
Last scanned: 2026-08-11 05:58:25  ·  1749ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   383ms
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 Records1 records   478ms
IPTTLPTRASNISP / OrgCIDRCountryCity
131.165.151.71 600s — AS6834 KMD A/S 131.165.0.0/16 🇩🇰 Denmark Rynkeby
📧 MX Records1 records   193ms
PriorityTTLMail ServerIP addressesPTRASN
0 300s .  Null MX — domain accepts no email (RFC 7505)
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   523ms
TXT Record
v=spf1 a mx ip4:131.165.151.1 -all
✉️ SPF
PolicyRecord (centralbiblioteket.dk)
-all (hard fail) v=spf1 a mx ip4:131.165.151.1 -all
📨 DMARC
PolicyRecord (_dmarc.centralbiblioteket.dk)
p=reject v=DMARC1; p=reject
📬 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
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC619ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026081101
Primary NS (MNAME)ns01.one.com
Responsible (RNAME)hostmaster@one.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
383ms
A
478ms
MX
193ms
AAAA
162ms
TXT
523ms
CAA
194ms
HTTPS
484ms
TLSA
89ms
SOA
0ms
MTA-STS
248ms
DNSSEC
619ms
SRV
371ms
Total
1749ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-11 05:58:25 1749ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-18 14:54:32 599ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-12 05:02:33 540ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-27 21:25:57 1086ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-16 20:06:19 681ms 2 NS 1 A 0 MX 🔒 Secure View
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