retbbr.dk DNS records

🖥️ Nameservers6 records 26ms

Nameserver	IP addresses	PTR	ASN / ISP
df-ns01.skat.dk	147.29.150.31	df-ns01.skat.dk	AS3292 TDC Holding A/S
df-ns02.skat.dk	147.29.151.254	df-ns02.skat.dk	AS3292 TDC Holding A/S
df-ns03.skat.dk	147.29.150.31	df-ns01.skat.dk	AS3292 TDC Holding A/S
df-ns04.skat.dk	147.29.151.254	df-ns02.skat.dk	AS3292 TDC Holding A/S
ns1-auth.csc.dk	147.29.236.25 2a01:5440:2:0:147:29:236:25	ns1-auth.csc.dk —	AS29156 DXC Technology Danmark A/S AS29156 DXC Technology Danmark A/S
ns2-auth.csc.dk	147.29.238.25 2a01:5440:2:2000:147:29:238:25	ns2-auth.csc.dk —	AS29156 DXC Technology Danmark A/S AS29156 DXC Technology Danmark A/S

🌍 A Records1 records 24ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
147.29.150.90	900s	—	AS3292	TDC Holding A/S	147.29.150.0/23	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 31ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	1800s	. 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 Records2 records 85ms

TXT Record
SKAT
v=spf1 -all

✉️ SPF

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

📨 DMARC

Policy	Record (_dmarc.retbbr.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:fd0c97ad@in.mailhardener.com; ruf=mailto:fd0c97ad@in.mailhardener.com

📬 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)

🔐 DNSSEC93ms

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

🏷️ SOA0ms

Field	Value
Serial	2025091856
Primary NS (MNAME)	df-ns01.skat.dk
Responsible (RNAME)	hostmaster@csc.dk
Refresh	14400s
Retry	7200s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

26ms

A

24ms

MX

31ms

AAAA

27ms

TXT

85ms

CAA

30ms

HTTPS

28ms

TLSA

135ms

SOA

0ms

MTA-STS

39ms

DNSSEC

93ms

SRV

1163ms

Total

3762ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-30 03:32:32	3762ms	6 NS 1 A 1 MX	🔒 Secure	View
2026-08-23 19:59:19	922ms	6 NS 1 A 1 MX	🔒 Secure	View
2026-08-20 17:12:30	2702ms	6 NS 1 A 1 MX	🔒 Secure	View
2026-08-19 14:49:18	16983ms	6 NS 1 A 1 MX	🔒 Secure	View
2026-08-12 13:00:07	2164ms	6 NS 1 A 1 MX	🔒 Secure	View
2026-08-08 07:12:41	12457ms	6 NS 1 A 1 MX	🔒 Secure	View
2026-08-03 18:05:13	799ms	6 NS 1 A 1 MX	🔒 Secure	View
2026-07-29 21:45:44	684ms	6 NS 1 A 1 MX	🔒 Secure	View
2026-07-20 11:21:04	2445ms	6 NS 1 A 1 MX	🔒 Secure	View
2026-07-16 20:21:53	747ms	6 NS 1 A 1 MX	🔒 Secure	View
2026-07-11 14:07:55	2347ms	6 NS 1 A 1 MX	🔒 Secure	View
2026-07-08 15:12:17	3832ms	6 NS 1 A 1 MX	🔒 Secure	View
2026-06-27 22:52:15	762ms	6 NS 1 A 1 MX	🔒 Secure	View
2026-06-26 02:27:05	2232ms	6 NS 1 A 1 MX	🔒 Secure	View
2026-06-25 11:33:16	1613ms	6 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 23:00:09	1083ms	6 NS 1 A 1 MX	⚠️ Bogus	View
2026-06-17 13:28:38	3345ms	6 NS 1 A 0 MX	🔒 Secure	View