holt-larsen.dk

📜 Historical scan 2026-06-29 09:49:21 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

holt-larsen.dk is a .dk domain served by 3 nameservers (ns1.heimdns.net, ns2.heimdns.net, ns3.heimdns.net). It was registered on 14 March 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mx.sohola.net. The zone is DNSSEC-signed and validates, publishes a 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#

3 records 1479ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.heimdns.net	2a01:4f9:c013:3e15::53 77.42.80.67	ns1.heimdns.net ns1.heimdns.net	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH
ns2.heimdns.net	2a01:4f8:c012:84a2::53 88.99.85.105	ns2.heimdns.net ns2.heimdns.net	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH
ns3.heimdns.net	185.31.77.53 2a00:b920:3:1337:77::53	ns3.heimdns.net ns3.heimdns.net	AS47527 DLX A/S AS47527 DLX A/S

🌍 A Records#

🌍

No A records found

📧 MX Records#

1 records 1642ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1337	1337s	mx.sohola.net	213.142.141.225 2a00:b921:1:1337:10:141:0:225	mx.sohola.net mx.sohola.net	AS47527 DLX A/S AS47527 DLX A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	mx.sohola.net → 213.142.141.225
🔶 Autoconfig	mx.sohola.net → 213.142.141.225

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

1 records 896ms

Priority	Target	SvcParams
1 service	.	alpn="h2"

🔌 SRV Records#

1 records 2659ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	1	1	443	mx.sohola.net

📝 TXT Records#

1 records 2950ms

TXT Record
v=spf1 include:spf.sohola.net -all

✉️ SPF#

Policy	Record (holt-larsen.dk)
-all (hard fail)	v=spf1 include:spf.sohola.net -all

📨 DMARC#

Policy	Record (_dmarc.holt-larsen.dk)
p=quarantine	v=DMARC1; p=quarantine; pct=100; rua=mailto:eaa17656@in.mailhardener.com,mailto:dmarc@sohola.net; sp=none; aspf=r

📬 MTA-STS#

2541ms

Check	Result
Status	🔒 Enforce
TXT record (_mta-sts)	✓ Found
HTTPS policy	✓ Valid
Mode	enforce
Policy ID	1337
max_age	172800s
Policy MX	mx.sohola.net

📈 TLSRPT#

Status	Report address (rua)
✓ Enabled	mailto:eaa17656@in.mailhardener.com

📜 CAA Records#

3 records 50ms

Flags	Tag	Value
0	iodef	mailto:hostmaster@holt-larsen.dk
0	issue	letsencrypt.org
0	issuewild	;

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-09 20:13:31

www	Exists, no address
www vs bare domain	Neither resolves holt-larsen.dk: no address www.holt-larsen.dk: no address
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
dkim	—	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

1 records 250ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx.sohola.net	DANE-EE · SPKI · SHA-256	B773093E63819E4DD4910A7D61C2F318…

🔐 DNSSEC#

1471ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

1258ms

Field	Value
Serial	2026062402
Primary NS (MNAME)	ns1.heimdns.net
Responsible (RNAME)	hostmaster@heimdns.net
Refresh	28800s
Retry	7200s
Expire	604800s
Minimum (neg-cache TTL)	86400s

📋 Registration#

WHOIS fetched 2026-10-11 13:37:36

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2007-03-14
Expires	2027-03-31 (156d)

🔗 Same registrant#

3 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
ipbot.dk	Punktum dk A/S (direct)
mailpass.dk	Punktum dk A/S (direct)
pernilleelisabeth.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

1479ms

652ms

1642ms

AAAA

1246ms

TXT

2950ms

CAA

50ms

HTTPS

896ms

TLSA

250ms

SOA

1258ms

MTA-STS

2541ms

DNSSEC

1471ms

SRV

2659ms

Total

3946ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 12:37:03	2101ms	3 NS 0 A 1 MX	🔒 Secure
2026-10-08 12:31:05	1995ms	3 NS 0 A 1 MX	🔒 Secure
2026-09-29 23:07:16	5563ms	3 NS 0 A 1 MX	🔒 Secure
2026-07-05 21:45:59	3856ms	3 NS 0 A 1 MX	🔒 Secure
2026-06-29 19:58:55	5775ms	3 NS 0 A 1 MX	🔒 Secure
2026-06-29 09:49:21 shown	3946ms	3 NS 0 A 1 MX	🔒 Secure
2026-06-27 12:05:47	2129ms	3 NS 0 A 1 MX	🔒 Secure
2026-06-25 09:37:55	1680ms	3 NS 0 A 1 MX	🔒 Secure
2026-06-24 16:54:12	2943ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-24 03:37:11	3325ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-23 17:04:27	3785ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-22 22:09:23	8440ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-22 15:10:59	2019ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-22 14:38:31	4332ms	2 NS 0 A 1 MX	⚠️ Bogus
2026-06-20 22:26:34	2652ms	2 NS 0 A 1 MX	⚠️ Bogus
2026-06-20 12:03:29	1968ms	2 NS 0 A 1 MX	⚠️ Bogus
2026-06-20 06:42:34	3089ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-17 12:14:27	1279ms	2 NS 0 A 1 MX	🔒 Secure