holmbergholdt.dk

📜 Historical scan 2026-08-27 12:17:25 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

holmbergholdt.dk is a .dk domain served by 2 nameservers (ns.dandomain.dk, ns2.dandomain.dk). It was registered on 14 March 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 212.237.249.17 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mail.novaxfamily.dk. 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#

2 records 52ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.dandomain.dk	185.25.141.3 2a02:2339:4006:109::dd	ns.dandomain.dk ns.dandomain.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.dandomain.dk	2a02:2339:1:108::dd:dd 91.197.248.66	ns2.dandomain.dk ns2.dandomain.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 118ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
212.237.249.17	3600s	splash.dandomain.dk	AS48854	team.blue Denmark A/S	212.237.248.0/23	🇩🇰 Denmark	—

📧 MX Records#

1 records 65ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mail.novaxfamily.dk	157.250.162.238	mail.novaxfamily.dk	AS3342 Cibicom A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	212.237.249.17
🔶 Autoconfig	212.237.249.17

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 91ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	mail.novaxfamily.dk

📝 TXT Records#

1 records 216ms

TXT Record
v=spf1 a mx ip4:157.250.162.233 ip4:157.250.162.238 -all

✉️ SPF#

Policy	Record (holmbergholdt.dk)
-all (hard fail)	v=spf1 a mx ip4:157.250.162.233 ip4:157.250.162.238 -all

📨 DMARC#

Policy	Record (_dmarc.holmbergholdt.dk)
p=reject	v=DMARC1;p=reject;sp=reject;rua=mailto:postmaster@novaxfamily.dk;ruf=mailto:postmaster@novaxfamily.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 2026-10-09 03:19:46

www	212.237.249.17 (AS48854) (address records, no CNAME)
www vs bare domain	Same network holmbergholdt.dk: 212.237.249.17 (AS48854) www.holmbergholdt.dk: 212.237.249.17 (AS48854)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
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: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

162ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026012101
Primary NS (MNAME)	ns.dandomain.dk
Responsible (RNAME)	hostmaster@dandomain.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-07 10:48:23

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2023-03-14
Expires	2027-03-13 (142d)

📋 WHOIS#

⏱️ Lookup Timing#

52ms

118ms

65ms

AAAA

70ms

TXT

216ms

CAA

52ms

HTTPS

75ms

TLSA

48ms

SOA

0ms

MTA-STS

103ms

DNSSEC

162ms

SRV

91ms

Total

601ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-03 23:22:22	441ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-24 00:07:37	430ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-27 12:17:25 shown	601ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 13:52:15	1940ms	2 NS 1 A 1 MX	🔒 Secure