a-ct.dk DNS records

🖥️ Nameservers2 records 62ms

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 Records1 records 96ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.213.98	3600s	webcluster2.webpod13-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 72ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	act-dk0c.mail.protection.outlook.com	2a01:111:f403:ca04:: 2a01:111:f403:ca04::b 2a01:111:f403:ca09::26 2a01:111:f403:ca09::c 52.101.103.140 52.101.68.0 52.101.68.39 52.101.73.19	mail-db3pr0202cu00100.inbound.protection.outlook.com mail-dbbpr03cu00103.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-miypr02cu00204.inbound.protection.outlook.com mail-db3pr0202cu00100.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-as8pr04cu00803.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

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.40

🔷 AAAA Records (IPv6)1 records 56ms

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 Records2 records 274ms

TXT Record
MS=ms76918447
v=spf1 include:spf.protection.outlook.com include:mouseketeers.conviator.com -all

✉️ SPF

Policy	Record (a-ct.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:mouseketeers.conviator.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

🔗 TLSA / DANE

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

🔐 DNSSEC234ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082901
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

62ms

A

96ms

MX

72ms

AAAA

56ms

TXT

274ms

CAA

73ms

HTTPS

112ms

TLSA

693ms

SOA

0ms

MTA-STS

150ms

DNSSEC

234ms

SRV

141ms

Total

1792ms

🕐 Scan History

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