acgroup.dk

📜 Historical scan 2026-06-16 12:46:37 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

acgroup.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 22 March 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.40.247 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mail.acgroup.dk, backup-mx.zitcom.dk. 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#

2 records 30ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	—	—	—
ns2.curanet.dk	—	—	—

🌍 A Records#

1 records 29ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.40.247	—	linux6.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

2 records 23ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	mail.acgroup.dk	80.160.71.163	mail1.curanet.dk	AS3292 TDC Holding A/S
20	—	backup-mx.zitcom.dk	46.36.212.34 46.36.212.36 46.36.212.37 46.36.212.38 89.188.78.64 89.188.78.65 89.188.78.66 94.231.106.12	node4.spamfilter.io node8.spamfilter.io node6.spamfilter.io node7.spamfilter.io node3.spamfilter.io node9.spamfilter.io node10.spamfilter.io node2.spamfilter.io	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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 2026-10-08 22:30:00

www	185.21.40.247 (AS48854) (address records, no CNAME)
www vs bare domain	Same network acgroup.dk: 185.21.40.247 (AS48854) www.acgroup.dk: 185.21.40.247 (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

🔗 TLSA / DANE#

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

🔐 DNSSEC#

100ms

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

🏷️ SOA#

26ms

Field	Value
Serial	2021111701
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-16 22:26:17

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2017-03-22
Expires	2027-03-31 (165d)

🔗 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
ankeronline.dk	Punktum dk A/S (direct)
ankerservice.dk	Punktum dk A/S (direct)
hydraflex.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

30ms

29ms

23ms

AAAA

24ms

TXT

176ms

CAA

20ms

HTTPS

20ms

TLSA

66ms

SOA

26ms

MTA-STS

36ms

DNSSEC

100ms

SRV

0ms

Total

796ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-29 21:02:14	601ms	2 NS 1 A 2 MX	🔒 Secure
2026-08-27 12:46:13	688ms	2 NS 1 A 2 MX	🔒 Secure
2026-08-26 11:08:48	710ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-20 03:32:32	600ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-16 12:46:37 shown	796ms	2 NS 1 A 2 MX	🔒 Secure