simonholdt.dk

📜 Historical scan 2026-10-01 09:12:57 · ← 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 33ms

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 57ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.215.204	3600s	webcluster1.webpod18-cph3.g1i.one	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records#

1 records 58ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	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 53ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:108:64:75b:33d2:45bd	3600s	—	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 163ms

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#

137ms

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

🏷️ SOA#

31ms

Field	Value
Serial	2026093001
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 (153d)

📋 WHOIS#

⏱️ Lookup Timing#

33ms

57ms

58ms

AAAA

53ms

TXT

163ms

CAA

31ms

HTTPS

36ms

TLSA

360ms

SOA

31ms

MTA-STS

67ms

DNSSEC

137ms

SRV

62ms

Total

1092ms

🕐 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 shown	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	3252ms	2 NS 1 A 1 MX	🔒 Secure