mytax.dk DNS records

🖥️ Nameservers2 records 421ms

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 381ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.215.132	3600s	webcluster1.webpod17-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 448ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	mytax-dk.mail.protection.outlook.com	2a01:111:f403:ca04::a 2a01:111:f403:ca04::d 2a01:111:f403:ca09::9 2a01:111:f403:ca09::c 52.101.68.15 52.101.68.21 52.101.73.153 52.101.73.19	mail-du0pr03cu00102.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-as8pr05cu00401.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 → 40.104.116.8
🔶 Autoconfig	46.30.215.132

🔷 AAAA Records (IPv6)1 records 378ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:106:20:dfbc:814f:2214	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

🔌 SRV Records1 records 520ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records2 records 1000ms

TXT Record
MS=ms51545144
v=spf1 include:spf.protection.outlook.com include:_custspf.one.com -all

✉️ SPF

Policy	Record (mytax.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:_custspf.one.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)

🔐 DNSSEC785ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✓ Found
Flags	unsigned answer

🏷️ SOA0ms

Field	Value
Serial	2026081805
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

421ms

A

381ms

MX

448ms

AAAA

378ms

TXT

1000ms

CAA

420ms

HTTPS

493ms

TLSA

772ms

SOA

0ms

MTA-STS

584ms

DNSSEC

785ms

SRV

520ms

Total

9121ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-19 11:56:12	9121ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-08-15 08:19:53	5422ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-29 17:30:55	1074ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-21 07:19:50	1338ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-17 13:24:44	1796ms	2 NS 1 A 1 MX	🔓 Insecure	View