holtmann.dk

📜 Historical scan 2026-06-18 16:36:06 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

holtmann.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 6 May 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mail.dependeasy.com. 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#

4 records 69ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

🌍

No A records found

📧 MX Records#

1 records 61ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mail.dependeasy.com	2a01:4f9:c012:66a7::1 95.217.237.57	mail.dependeasy.com mail.dependeasy.com	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	mail.dependeasy.com → 95.217.237.57
🔶 Autoconfig	mail.dependeasy.com → 95.217.237.57

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 190ms

TXT Record
google-site-verification=I0mowGXWLQJTqoJjtKLv5jDAWLSu9QHzExIprXqQPRk
v=spf1 a:mail.dependeasy.com ip4:95.217.237.57 ?all

✉️ SPF#

Policy	Record (holtmann.dk)
?all (neutral)	v=spf1 a:mail.dependeasy.com ip4:95.217.237.57 ?all

📨 DMARC#

Policy	Record (_dmarc.holtmann.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc@rophome.dk

📬 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 2026-10-12 21:12:04

www	NXDOMAIN
www vs bare domain	Neither resolves holtmann.dk: no address www.holtmann.dk: no address
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 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

warn "?all" is neutral: it gives receivers no guidance, much like having no SPF

🔗 TLSA / DANE#

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

🔐 DNSSEC#

142ms

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

🏷️ SOA#

61ms

Field	Value
Serial	2024083001
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-07 03:02:52

Field	Value
Registrar	Simply.com A/S
Registered	2006-05-06
Expires	2027-05-31 (224d)

📋 WHOIS#

⏱️ Lookup Timing#

69ms

64ms

61ms

AAAA

66ms

TXT

190ms

CAA

62ms

HTTPS

62ms

TLSA

65ms

SOA

61ms

MTA-STS

70ms

DNSSEC

142ms

SRV

174ms

Total

1382ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 21:12:04	1979ms	4 NS 0 A 1 MX	🔒 Secure
2026-10-02 10:19:33	749ms	4 NS 0 A 1 MX	🔒 Secure
2026-09-27 09:47:34	520ms	4 NS 0 A 1 MX	🔒 Secure
2026-08-09 01:35:12	32748ms	4 NS 0 A 1 MX	🔒 Secure
2026-06-30 06:55:58	895ms	4 NS 0 A 1 MX	🔒 Secure
2026-06-18 16:36:06 shown	1382ms	4 NS 0 A 1 MX	🔒 Secure
2026-06-17 14:22:28	274ms	0 NS 0 A 0 MX	❓ Unknown