rtb.dk DNS records

🖥️ Nameservers2 records 39ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.dlx.dk	2a00:1b18:1337:1337::53 46.30.121.210	ns1.dlx.dk ns1.dlx.dk	AS47527 DLX A/S AS47527 DLX A/S
ns2.dlx.dk	185.208.212.124 2a00:1b19:1337:1337::53	ns2.dlx.dk ns2.dlx.dk	AS47527 DLX A/S AS47527 DLX A/S

🌍 A Records

🌍

No A records found

📧 MX Records7 records 30ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	209.85.233.27 2a00:1450:4010:c01::1b 2a00:1450:4010:c01::1b	lr-in-f27.1e100.net lh-in-f27.1e100.net lh-in-x1b.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.com	192.178.158.26 2404:6800:4013:813::1b	lcdels-in-f26.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt2.aspmx.l.google.com	173.194.41.27 173.194.41.27 2404:6800:4001:c01::1b	mad01s14-in-f27.1e100.net yukulwh-in-f27.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	3600s	aspmx2.googlemail.com	192.178.158.26 2404:6800:4013:813::1b	lcdels-in-f26.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	aspmx3.googlemail.com	173.194.41.26 173.194.41.26 2404:6800:4001:c01::1b	yukulwh-in-f26.1e100.net mad01s14-in-f26.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	3600s	aspmx4.googlemail.com	172.253.158.27 2404:6800:4003:c26::1a	so-in-f27.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	aspmx5.googlemail.com	108.177.125.26 2404:6800:4008:c01::1a	tp-in-f26.1e100.net tp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 140ms

TXT Record
v=spf1 include:_spf.google.com -all

✉️ SPF

Policy	Record (rtb.dk)
-all (hard fail)	v=spf1 include:_spf.google.com -all

📨 DMARC

✗ No DMARC record — mail spoofing not restricted

📬 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)

🔐 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	2022020724
Primary NS (MNAME)	ns1.dlx.dk
Responsible (RNAME)	ks@dlx.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

39ms

A

55ms

MX

30ms

AAAA

55ms

TXT

140ms

CAA

38ms

HTTPS

51ms

TLSA

154ms

SOA

0ms

MTA-STS

60ms

DNSSEC

87ms

SRV

65ms

Total

845ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 21:45:33	845ms	2 NS 0 A 7 MX	🔒 Secure	View
2026-08-26 02:35:32	947ms	2 NS 0 A 7 MX	🔒 Secure	View
2026-08-17 11:40:40	5980ms	2 NS 0 A 7 MX	🔒 Secure	View
2026-08-16 11:00:57	7475ms	2 NS 0 A 7 MX	🔒 Secure	View
2026-07-25 18:07:56	1430ms	2 NS 0 A 7 MX	🔒 Secure	View
2026-07-24 17:55:16	1505ms	2 NS 0 A 7 MX	🔒 Secure	View
2026-07-03 16:12:10	695ms	2 NS 0 A 7 MX	🔒 Secure	View
2026-07-01 13:03:15	709ms	2 NS 0 A 7 MX	🔒 Secure	View
2026-06-20 15:20:25	1437ms	2 NS 0 A 7 MX	🔒 Secure	View
2026-06-18 01:02:57	759ms	2 NS 0 A 7 MX	🔒 Secure	View