roundtrip.dk

📜 Historical scan 2026-10-02 00:39:18 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

roundtrip.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 20 May 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 93.164.164.82 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by roundtrip.dk, backup-mx.post.tele.dk. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. 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 38ms

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#

1 records 39ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
93.164.164.82	43200s	binaryshelter.com	AS3292	TDC Holding A/S	93.164.160.0/19	🇩🇰 Denmark	Farsø

📧 MX Records#

2 records 35ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	43200s	roundtrip.dk	93.164.164.82	binaryshelter.com	AS3292 TDC Holding A/S
20	43200s	backup-mx.post.tele.dk	80.160.77.99	backup-mx1.post.tele.dk	AS3292 TDC Holding A/S

🔷 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 2026-10-16 16:00:25

www CNAME	roundtrip.dk (all on roundtrip.dk) → 93.164.164.82 (AS3292)
www vs bare domain	Same network roundtrip.dk: 93.164.164.82 (AS3292) www.roundtrip.dk: 93.164.164.82 (AS3292)
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#

58ms

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

🏷️ SOA#

34ms

Field	Value
Serial	2026100101
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-05 01:17:41

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2009-05-20
Expires	2027-05-31 (226d)

📋 WHOIS#

⏱️ Lookup Timing#

38ms

39ms

35ms

AAAA

27ms

TXT

130ms

CAA

38ms

HTTPS

37ms

TLSA

55ms

SOA

34ms

MTA-STS

56ms

DNSSEC

58ms

SRV

51ms

Total

501ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-05 00:51:17	612ms	2 NS 1 A 2 MX	🔒 Secure
2026-10-02 00:39:18 shown	501ms	2 NS 1 A 2 MX	🔒 Secure
2026-10-01 00:35:25	795ms	2 NS 1 A 2 MX	🔒 Secure
2026-09-30 00:28:25	681ms	2 NS 1 A 2 MX	🔒 Secure
2026-09-26 23:43:49	2497ms	2 NS 1 A 2 MX	🔒 Secure
2026-09-13 12:07:07	6416ms	2 NS 1 A 2 MX	🔒 Secure
2026-08-27 03:49:37	708ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-25 21:45:18	2474ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-24 01:30:45	976ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 12:11:14	1170ms	2 NS 1 A 2 MX	🔒 Secure