nationalbibliotek.dk DNS records

🖥️ Nameservers2 records 43ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.kb.dk	130.226.226.15	ns.kb.dk	AS1835 IDDQD-AS
ns2.kb.dk	130.225.179.5	ns2.kb.dk	AS1835 IDDQD-AS

🌍 A Records

🌍

No A records found

📧 MX Records

📧

No MX records found

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 210ms

TXT Record
v=spf1 -all

✉️ SPF

Policy	Record (nationalbibliotek.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC

Policy	Record (_dmarc.nationalbibliotek.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dar@kb.dk;

📬 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

🔏 ACME Challenge

Type	Name	Value
CNAME	_acme-challenge.nationalbibliotek.dk	1d1aced9-3e7d-4aab-99cb-d051285fe142.acme.kb.dk
TXT	1d1aced9-3e7d-4aab-99cb-d051285fe142.acme.kb.dk	m4sGPR6Tuk0f0ByBJgu9h6uHD_Y5vxXAdNMNf2NQ_wU
TXT	1d1aced9-3e7d-4aab-99cb-d051285fe142.acme.kb.dk	tvgILKx-DbJaXq5U8mSUvZtb1HtAcTgHQ8YIsExIBdY

🔗 TLSA / DANE

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

🔐 DNSSEC87ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: ncache nxrrset

🏷️ SOA0ms

Field	Value
Serial	2016031754
Primary NS (MNAME)	ns.kb.dk
Responsible (RNAME)	dns@kb.dk
Refresh	28800s
Retry	7200s
Expire	604800s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

43ms

A

64ms

MX

37ms

AAAA

61ms

TXT

210ms

CAA

52ms

HTTPS

49ms

TLSA

61ms

SOA

0ms

MTA-STS

69ms

DNSSEC

87ms

SRV

70ms

Total

505ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-01 20:42:27	505ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-31 13:53:45	1650ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-30 02:21:33	442ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-23 20:59:34	1512ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-18 15:10:26	552ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-15 17:33:37	2070ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-12 09:27:18	4064ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-07 04:48:16	1025ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-04 05:27:11	4687ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-07-26 14:32:28	495ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-07-25 14:15:21	768ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-07-20 01:00:07	3002ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-07-17 20:14:14	2354ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-07-16 19:59:07	16498ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-07-09 05:20:42	16528ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-07-06 12:37:03	4839ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-07-03 14:44:53	509ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-06-30 14:21:31	448ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-06-25 22:50:20	460ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-06-23 20:16:17	445ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-06-20 23:22:50	813ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-06-17 12:16:17	492ms	2 NS 0 A 0 MX	🔒 Secure	View