holtumgruppen.dk

📜 Historical scan 2026-06-21 08:39:29 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

holtumgruppen.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 15 March 2013 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 212.97.134.25 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is DNSSEC-signed and validates, has no 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 126ms

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

🌍 A Records#

1 records 136ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
212.97.134.25	600s	—	AS48854	team.blue Denmark A/S	212.97.132.0/22	🇩🇰 Denmark	Skanderborg

📧 MX Records#

5 records 123ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	aspmx.l.google.com	142.251.127.27 2a00:1450:4001:c21::1b	lcfrai-in-f27.1e100.net lcfrai-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
20	600s	alt1.aspmx.l.google.com	192.178.211.27 2404:6800:4000:1025::1b	lcbomp-in-f27.1e100.net lcbomp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
20	600s	alt2.aspmx.l.google.com	172.253.158.27 2404:6800:4003:c26::1b	so-in-f27.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
30	600s	aspmx2.googlemail.com	192.178.211.27 2404:6800:4000:1025::1a	lcbomp-in-f27.1e100.net lcbomp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
30	600s	aspmx3.googlemail.com	172.253.158.26 2404:6800:4003:c26::1a	so-in-f26.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	212.97.134.25
🔶 Autoconfig	212.97.134.25

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 496ms

TXT Record
google-site-verification=Qi-73yzs3FZhcWrF_5T0efBf4Jk5aidb0ph5109QoVU
v=spf1 ip4:37.205.124.106 include:_spf.google.com ~all

✉️ SPF#

Policy	Record (holtumgruppen.dk)
~all (soft fail)	v=spf1 ip4:37.205.124.106 include:_spf.google.com ~all

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 2026-10-23 01:04:29

www	212.97.134.25 (AS48854) (address records, no CNAME)
www vs bare domain	Same network holtumgruppen.dk: 212.97.134.25 (AS48854) www.holtumgruppen.dk: 212.97.134.25 (AS48854)
Wildcard	Yes: any name under the zone resolves
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

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

340ms

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

🏷️ SOA#

152ms

Field	Value
Serial	2024030804
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 2026-10-12 02:26:04

Field	Value
Registrar	Simply.com A/S
Registered	2013-03-15
Expires	2027-03-31 (156d)

🔗 Same registrant#

1 domain

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
bkvejle.dk	Simply.com A/S

📋 WHOIS#

⏱️ Lookup Timing#

126ms

136ms

123ms

AAAA

137ms

TXT

496ms

CAA

133ms

HTTPS

169ms

TLSA

1182ms

SOA

152ms

MTA-STS

160ms

DNSSEC

340ms

SRV

177ms

Total

2247ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-23 01:04:29	16529ms	3 NS 1 A 5 MX	🔒 Secure
2026-10-12 17:50:58	16763ms	3 NS 1 A 5 MX	🔒 Secure
2026-10-03 13:03:54	4438ms	3 NS 1 A 5 MX	🔒 Secure
2026-10-03 07:17:24	4203ms	3 NS 1 A 5 MX	🔒 Secure
2026-09-16 03:24:32	4669ms	3 NS 1 A 5 MX	🔒 Secure
2026-09-12 05:47:42	4538ms	3 NS 1 A 5 MX	🔒 Secure
2026-08-26 23:06:03	4943ms	3 NS 1 A 5 MX	🔒 Secure
2026-06-21 08:39:29 shown	2247ms	3 NS 1 A 5 MX	🔒 Secure
2026-06-17 14:20:41	278ms	0 NS 0 A 0 MX	❓ Unknown