centralbibliotek.dk

📜 Historical scan 2026-07-13 19:03:25 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

centralbibliotek.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It 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 mail.fynbib.dk. The zone is DNSSEC-signed and validates, publishes a 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 36ms

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 45ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
131.165.151.71	23s	—	AS6834	KMD A/S	131.165.0.0/16	🇩🇰 Denmark	Rynkeby

📧 MX Records#

1 records 39ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	mail.fynbib.dk	131.165.151.1	mail.fynbib.dk	AS6834 KMD A/S

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 16150ms

TXT Record
google-site-verification=JnNtoSvwqZYTrc2vEAQtBIYK-mD0t1Aeic8x5xnF_2g
v=spf1 include:fynbib.dk -all

✉️ SPF#

Policy	Record (centralbibliotek.dk)
-all (hard fail)	v=spf1 include:fynbib.dk -all

📨 DMARC#

Policy	Record (_dmarc.centralbibliotek.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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 2026-10-12 01:34:22

www CNAME	centralbibliotek.dk (all on centralbibliotek.dk) → 131.165.151.71 (AS6834)
www vs bare domain	Same network centralbibliotek.dk: 131.165.151.71 (AS6834) www.centralbibliotek.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

✍️ DKIM keys#

1 found

Selector	CNAME	Key
default	—	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.centralbibliotek.dk	_acme-cbib.fynbib.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

124ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026071101
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 yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

36ms

45ms

39ms

AAAA

41ms

TXT

16150ms

CAA

37ms

HTTPS

38ms

TLSA

92ms

SOA

0ms

MTA-STS

46ms

DNSSEC

124ms

SRV

126ms

Total

16607ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 01:34:22	1574ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-07 21:40:12	459ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-11 20:16:37	715ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-26 01:02:18	559ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-11 03:32:00	761ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-17 23:56:47	592ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-13 19:03:25 shown	16607ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-01 23:56:39	1565ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 20:06:21	581ms	2 NS 1 A 1 MX	🔒 Secure