cfb.dk DNS records

🖥️ Nameservers2 records 66ms

Nameserver	IP addresses	PTR	ASN / ISP
ns3.au.dk	20.73.178.34	ns3.au.dk	AS8075 Microsoft Corporation
ns4.au.dk	185.45.20.154	ns4.au.dk	AS62138 Aarhus Universitet

🌍 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 174ms

TXT Record
v=spf1 include:spf.au.dk -all

✉️ SPF

Policy	Record (cfb.dk)
-all (hard fail)	v=spf1 include:spf.au.dk -all

📨 DMARC

Policy	Record (_dmarc.cfb.dk)
p=reject	v=DMARC1;p=reject;pct=100;rua=mailto:ced1e70d2c70635@rep.dmarcanalyzer.com;ruf=mailto:ced1e70d2c70635@for.dmarcanalyzer.com;aspf=r;

📬 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)

🔐 DNSSEC126ms

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	4479
Primary NS (MNAME)	infobloxgm3.au.dk
Responsible (RNAME)	tune@dpu.dk
Refresh	10800s
Retry	1080s
Expire	2419200s
Minimum (neg-cache TTL)	900s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

66ms

A

59ms

MX

61ms

AAAA

47ms

TXT

174ms

CAA

37ms

HTTPS

74ms

TLSA

13ms

SOA

0ms

MTA-STS

75ms

DNSSEC

126ms

SRV

69ms

Total

587ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-03 14:44:32	587ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-09-01 16:19:10	588ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-09-01 04:03:44	335ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-31 04:00:14	345ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-29 19:07:47	740ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-28 16:04:36	1149ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-27 15:46:23	651ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-26 14:52:27	884ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-25 11:48:03	772ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-24 11:41:01	662ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-23 05:05:29	3019ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-22 04:58:19	616ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-21 04:30:42	836ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-20 04:07:48	3031ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-19 03:04:39	3322ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-18 00:41:14	2809ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-16 13:30:38	1786ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-15 02:40:23	624ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-13 14:57:32	1986ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-10 02:23:49	8459ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-07 13:24:01	599ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-06 02:07:52	561ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-08-03 19:51:59	932ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-07-27 16:15:35	9396ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-07-26 16:05:39	696ms	2 NS 0 A 0 MX	🔒 Secure	View