rt-byg.dk

📜 Historical scan 2026-08-25 00:57:30 · ← Latest scan

🚫 Deactivated by the registry ⬇ Zone File 📜 Timeline & History ⚡ Scan Now

rt-byg.dk is a .dk domain the registry has taken out of service: it is delegated to the registry's own sentinel nameservers (nonexistent.punktum.dk), so it does not resolve. It was registered on 24 August 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. 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#

1 records 93ms

Nameserver	IP addresses	PTR	ASN / ISP
nonexistent.punktum.dk	—	—	—

🌍 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 Records#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-15 04:28:57

www	185.134.245.113 2a01:5b40:0:bc03::1 (AS12996) (address records, no CNAME)
www vs bare domain	Same network rt-byg.dk: 185.134.245.113 2a01:5b40:0:bc03::1 (AS12996) www.rt-byg.dk: 185.134.245.113 2a01:5b40:0:bc03::1 (AS12996)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔗 TLSA / DANE#

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

🔐 DNSSEC#

989ms

Check	Result
Validation Status	❓ Unknown (the delegated nameservers don't answer)
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: failure

🏷️ SOA#

✗ No SOA record found

📋 Registration#

WHOIS fetched 2026-07-04 18:15:05

Field	Value
Registrar	Domeneshop AS
Registered	2025-08-24
Expires	2026-08-23 (expired)

📋 WHOIS#

⏱️ Lookup Timing#

93ms

62ms

83ms

AAAA

130ms

TXT

301ms

CAA

97ms

HTTPS

110ms

TLSA

51ms

SOA

64ms

MTA-STS

140ms

DNSSEC

989ms

SRV

156ms

Total

2234ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-15 04:28:57	620ms	3 NS 1 A 5 MX	🔒 Secure
2026-09-30 14:14:09	934ms	3 NS 1 A 5 MX	🔒 Secure
2026-09-24 09:08:10	971ms	3 NS 1 A 5 MX	🔒 Secure
2026-09-23 17:25:34	804ms	3 NS 1 A 5 MX	🔒 Secure
2026-09-01 02:01:27	900ms	3 NS 1 A 5 MX	🔒 Secure
2026-08-28 10:07:33	934ms	3 NS 1 A 5 MX	🔒 Secure
2026-08-27 10:02:06	185ms	1 NS 0 A 0 MX	❓ Unknown
2026-08-26 10:01:53	993ms	1 NS 0 A 0 MX	❓ Unknown
2026-08-25 00:57:30 shown	2234ms	1 NS 0 A 0 MX	❓ Unknown
2026-08-23 23:24:01	1175ms	3 NS 1 A 0 MX	🔒 Secure
2026-08-20 19:52:27	6404ms	3 NS 1 A 5 MX	🔒 Secure
2026-07-28 01:51:01	1290ms	3 NS 1 A 5 MX	🔒 Secure
2026-07-04 18:08:56	1014ms	3 NS 1 A 5 MX	🔒 Secure
2026-07-03 01:07:15	970ms	3 NS 1 A 5 MX	🔒 Secure
2026-06-19 22:48:39	2787ms	3 NS 1 A 5 MX	🔒 Secure
2026-06-17 18:56:23	6215ms	3 NS 1 A 5 MX	🔒 Secure