simonholdt.dk

📜 Historical scan 2026-06-17 13:07:57 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

simonholdt.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 23 March 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.215.204 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by simonholdt-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. 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 65ms

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 62ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.215.204	—	webcluster1.webpod18-cph3.g1i.one	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records#

1 records 72ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	—	simonholdt-dk.mail.protection.outlook.com	2a01:111:f403:c967:: 2a01:111:f403:c967::2 2a01:111:f403:c967::4 2a01:111:f403:c967::6 52.101.209.2 52.101.209.4 52.101.209.6 52.101.209.74	mail-cpcp307cu00400.inbound.protection.outlook.com mail-cpap307cu00402.inbound.protection.outlook.com mail-cpap307cu00204.inbound.protection.outlook.com mail-cpcp307cu00206.inbound.protection.outlook.com mail-cpap307cu00402.inbound.protection.outlook.com mail-cpap307cu00204.inbound.protection.outlook.com mail-cpcp307cu00206.inbound.protection.outlook.com mail-cpcp307cu00402.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🔷 AAAA Records (IPv6)#

1 records 70ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:108:64:75b:33d2:45bd	—	—	AS51468	One.com A/S	2a02:2350:0:0:0:0:0:0/32	🇩🇰 Denmark	Copenhagen

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 444ms

TXT Record
v=spf1 include:_custspf.one.com include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (simonholdt.dk)
-all (hard fail)	v=spf1 include:_custspf.one.com include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.simonholdt.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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 2026-10-07 20:19:02

www	46.30.215.204 2a02:2350:5:108:64:75b:33d2:45bd (AS51468) (address records, no CNAME)
www vs bare domain	Same network simonholdt.dk: 46.30.215.204 2a02:2350:5:108:64:75b:33d2:45bd (AS51468) www.simonholdt.dk: 46.30.215.204 2a02:2350:5:108:64:75b:33d2:45bd (AS51468)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 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#

193ms

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

🏷️ SOA#

67ms

Field	Value
Serial	2026052901
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 2026-10-01 09:43:49

Field	Value
Registrar	ONE.COM A/S
Registered	2026-03-23
Expires	2027-03-22 (154d)

📋 WHOIS#

⏱️ Lookup Timing#

65ms

62ms

72ms

AAAA

70ms

TXT

444ms

CAA

115ms

HTTPS

76ms

TLSA

877ms

SOA

67ms

MTA-STS

151ms

DNSSEC

193ms

SRV

0ms

Total

3252ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-07 20:19:02	1043ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-01 09:12:57	1092ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-24 07:17:57	918ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-23 11:57:16	843ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-17 06:15:34	990ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-06 02:45:13	897ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-28 10:45:40	1316ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-25 23:25:56	2795ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-31 07:06:45	17034ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-23 18:39:16	2004ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-05 19:12:06	9255ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-29 23:57:34	672ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 13:07:57 shown	3252ms	2 NS 1 A 1 MX	🔒 Secure