a-ct.dk

📜 Historical scan 2026-08-10 23:18:45 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

a-ct.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.213.98 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by act-dk0c.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no DMARC policy and is reachable over IPv6. 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 2607ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 2590ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.213.98	3600s	—	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records#

1 records 2603ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	act-dk0c.mail.protection.outlook.com	2a01:111:f403:ca04::8 2a01:111:f403:ca04::d 2a01:111:f403:ca09::5 2a01:111:f403:ca09::e 52.101.68.36 52.101.68.8 52.101.73.12 52.101.73.22	mail-db5pr02cu00100.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-am7pr05cu00206.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-am4pr0401cu00104.inbound.protection.outlook.com mail-am7pr05cu00106.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🔷 AAAA Records (IPv6)#

1 records 2617ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:10b:8011:2e57:2716:970a	3600s	—	AS51468	One.com A/S	2a02:2350:0:0:0:0:0:0/32	🇩🇰 Denmark	Copenhagen

🔐 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 2026-10-11 02:12:25

www	46.30.213.98 2a02:2350:5:10b:8011:2e57:2716:970a (AS51468) (address records, no CNAME)
www vs bare domain	Same network a-ct.dk: 46.30.213.98 2a02:2350:5:10b:8011:2e57:2716:970a (AS51468) www.a-ct.dk: 46.30.213.98 2a02:2350:5:10b:8011:2e57:2716:970a (AS51468)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔗 TLSA / DANE#

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

🔐 DNSSEC#

3026ms

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

🏷️ SOA#

✗ No SOA record found

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

2607ms

2590ms

2603ms

AAAA

2617ms

TXT

4456ms

CAA

2553ms

HTTPS

2582ms

TLSA

4089ms

SOA

4264ms

MTA-STS

2619ms

DNSSEC

3026ms

SRV

4275ms

Total

15254ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-27 16:24:41	7075ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-23 22:14:12	1117ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-04 17:38:43	1244ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-29 16:36:42	1792ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-26 14:46:51	4057ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-20 23:56:44	8460ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-12 12:51:17	1944ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-10 23:18:45 shown	15254ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-21 09:29:12	1162ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-02 16:33:18	3167ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-20 18:38:59	1170ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 12:46:42	664ms	2 NS 1 A 1 MX	🔒 Secure