centralbiblioteket.dk

Records from scan: 2026-10-12 01:02:46 · 516ms total · last checked 2026-10-16 08:43 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

centralbiblioteket.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 20 November 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 131.165.151.71 is hosted by KMD A/S (AS6834) in Denmark. Mail is handled by .. The zone is DNSSEC-signed and validates, publishes a 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 34ms

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 35ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
131.165.151.71	600s	—	AS6834	KMD A/S	131.165.0.0/16	🇩🇰 Denmark	—

📧 MX Records#

1 records 37ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
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 Records#

1 records 130ms

TXT Record
v=spf1 a mx ip4:131.165.151.1 -all

✉️ SPF#

Policy	Record (centralbiblioteket.dk)
-all (hard fail)	v=spf1 a mx ip4:131.165.151.1 -all

📨 DMARC#

Policy	Record (_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

🧩 Web & zone#

checked 2026-10-12 01:02:46

www CNAME	centralbibliotek.dk (all on centralbibliotek.dk) → 131.165.151.71 (AS6834)
www vs bare domain	Same network centralbiblioteket.dk: 131.165.151.71 (AS6834) www.centralbiblioteket.dk: 131.165.151.71 (AS6834)
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: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

114ms

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

🏷️ SOA#

43ms

Field	Value
Serial	2026101101
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 2026-10-09 14:13:53

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2001-11-20
Expires	2026-12-31 (75d)

📋 WHOIS#

⏱️ Lookup Timing#

34ms

35ms

37ms

AAAA

43ms

TXT

130ms

CAA

29ms

HTTPS

33ms

TLSA

66ms

SOA

43ms

MTA-STS

49ms

DNSSEC

114ms

SRV

49ms

Total

516ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 01:02:46 shown	516ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-14 00:45:20	753ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-11 05:58:25	1749ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-18 14:54:32	599ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-12 05:02:33	540ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-27 21:25:57	1086ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 20:06:19	681ms	2 NS 1 A 0 MX	🔒 Secure