rtholdy.dk

📜 Historical scan 2026-06-18 08:59:21 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

rtholdy.dk is a .dk domain served by 2 nameservers (ns51.gullestrupnet.dk, ns52.gullestrupnet.dk). It was registered on 30 November 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 82.165.189.144 is hosted by IONOS SE (AS8560) in Germany. Mail is handled by mail.rtholdy.dk, backupmail.gullestrupnet.dk. The zone is not DNSSEC-signed, 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 1736ms

Nameserver	IP addresses	PTR	ASN / ISP
ns51.gullestrupnet.dk	82.165.189.144	gn51.gullestrupnet.dk	AS8560 IONOS SE
ns52.gullestrupnet.dk	82.165.203.134	mail51.gullestrupnet.dk	AS8560 IONOS SE

🌍 A Records#

1 records 1121ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
82.165.189.144	—	gn51.gullestrupnet.dk	AS8560	IONOS SE	82.165.0.0/16	🇩🇪 Germany	—

📧 MX Records#

2 records 1799ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	mail.rtholdy.dk	82.165.203.134	mail51.gullestrupnet.dk	AS8560 IONOS SE
30	—	backupmail.gullestrupnet.dk	82.165.203.134	mail51.gullestrupnet.dk	AS8560 IONOS SE

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	82.165.189.144

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 2645ms

TXT Record
v=spf1 ip4:82.165.203.134 ip4=82.165.189.144 +a +mx -all

✉️ SPF#

Policy	Record (rtholdy.dk)
-all (hard fail)	v=spf1 ip4:82.165.203.134 ip4=82.165.189.144 +a +mx -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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-03 05:10:25

www	Address record (no CNAME)
Wildcard	Yes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

2274ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

1624ms

Field	Value
Serial	2025103004
Primary NS (MNAME)	ns51.gullestrupnet.dk
Responsible (RNAME)	hostmaster@gullestrupnet.dk
Refresh	10800s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	10800s

📋 Registration#

WHOIS fetched 2026-10-11 02:46:11

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2004-11-30
Expires	2026-11-30 (42d)

📋 WHOIS#

⏱️ Lookup Timing#

1736ms

1121ms

1799ms

AAAA

2049ms

TXT

2645ms

CAA

554ms

HTTPS

739ms

TLSA

3641ms

SOA

1624ms

MTA-STS

1564ms

DNSSEC

2274ms

SRV

2150ms

Total

14173ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-26 04:15:10	9468ms	2 NS 1 A 2 MX	🔓 Insecure
2026-09-04 14:29:47	9609ms	2 NS 1 A 2 MX	🔓 Insecure
2026-09-03 09:05:21	2784ms	2 NS 1 A 2 MX	🔓 Insecure
2026-08-28 09:54:50	9604ms	2 NS 1 A 2 MX	🔓 Insecure
2026-08-27 08:38:22	1424ms	2 NS 1 A 2 MX	🔓 Insecure
2026-06-18 08:59:21 shown	14173ms	2 NS 1 A 2 MX	🔓 Insecure