back2back.dk

📜 Historical scan 2026-07-10 22:00:31 · ← Latest scan

🧟 Lame delegation ⬇ Zone File 📜 Timeline & History ⚡ Scan Now

back2back.dk is a registered .dk domain whose nameservers (ns01.one.com, ns02.one.com) do not answer for it, so it is currently a lame delegation and does not resolve. It was registered on 21 November 2020 (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#

2 records 39ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 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

🔗 TLSA / DANE#

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

🔐 DNSSEC#

105ms

Check	Result
Validation Status	⚠️ Bogus — the parent still publishes a DS record, but the delegated nameservers don't answer, so no signed answer can be fetched. The zone isn't serving broken signatures; it isn't serving at all.
AD Flag (resolver validates)	✗ Not set
DS Record	✓ Found
DNSKEY Record	✗ Not found
Flags	resolution failed: failure

🏷️ SOA#

✗ No SOA record found

📋 Registration#

WHOIS fetched 2026-10-06 16:18:45

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2020-11-21
Expires	2026-11-30 (35d)

📋 WHOIS#

⏱️ Lookup Timing#

39ms

44ms

43ms

AAAA

43ms

TXT

8416ms

CAA

41ms

HTTPS

42ms

TLSA

81ms

SOA

38ms

MTA-STS

78ms

DNSSEC

105ms

SRV

160ms

Total

8994ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 04:22:50	1352ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-09-30 02:31:31	1402ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-09-25 20:52:30	1353ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-08-24 00:03:04	793ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-08-22 22:58:52	5957ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-08-21 22:41:29	1334ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-08-20 22:31:42	12203ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-08-19 22:15:57	1229ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-08-18 21:24:34	4963ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-08-16 23:03:17	2519ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-08-15 21:57:01	10100ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-08-14 17:20:36	936ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-08-13 06:03:56	8897ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-08-10 04:48:16	2679ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-08-08 14:24:32	3366ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-08-01 01:48:22	921ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-07-27 14:36:35	952ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-07-26 14:00:48	960ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-07-25 13:17:24	8765ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-07-24 13:05:36	1321ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-07-23 11:18:20	1474ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-07-22 01:31:34	10092ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-07-20 22:16:58	16769ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-07-18 14:22:55	934ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-07-17 11:18:46	3846ms	2 NS 0 A 0 MX	⚠️ Bogus