kaj-christensen.dk DNS records

🖥️ Nameservers2 records 30ms

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 29ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
144.91.97.254	360s	mail.justworks.dk	AS51167	Contabo GmbH	144.91.64.0/18	🇫🇷 France	Lauterbourg

📧 MX Records1 records 30ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	360s	kajchristensen-dk0i.mail.protection.outlook.com	2a01:111:f403:ca04::f 2a01:111:f403:ca09::2 2a01:111:f403:ca09::7 2a01:111:f403:ca09::c 52.101.73.15 52.101.73.16 52.101.73.6 52.101.73.8	mail-db7pr03cu00507.inbound.protection.outlook.com mail-am0pr83cu00402.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-am6pr04cu00306.inbound.protection.outlook.com mail-am0pr04cu00500.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 → 40.104.116.56
🔶 Autoconfig	kaj-christensen.dk → 144.91.97.254

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 67ms

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

📝 TXT Records2 records 158ms

TXT Record
ms=ms44019888
v=spf1 include:spf.protection.outlook.com include:_spf.justworks.dk ~all

✉️ SPF

Policy	Record (kaj-christensen.dk)
~all (soft fail)	v=spf1 include:spf.protection.outlook.com include:_spf.justworks.dk ~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

🔏 ACME Challenge

Type	Name	Value
CNAME	_acme-challenge.kaj-christensen.dk	kaj-christensen.dk

🔗 TLSA / DANE

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

🔐 DNSSEC9062ms

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

🏷️ SOA14ms

Field	Value
Serial	2022072500
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	support@justworks.dk
Refresh	14400s
Retry	3600s
Expire	604800s
Minimum (neg-cache TTL)	300s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

30ms

A

29ms

MX

30ms

AAAA

29ms

TXT

158ms

CAA

30ms

HTTPS

30ms

TLSA

516ms

SOA

14ms

MTA-STS

40ms

DNSSEC

9062ms

SRV

67ms

Total

14378ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-07-27 12:14:30	14378ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-07-01 12:35:42	825ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-30 05:35:52	902ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-28 04:50:42	979ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-27 20:59:42	1913ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-23 04:18:02	2090ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-22 18:17:17	1182ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-17 13:21:31	2432ms	2 NS 1 A 1 MX	🔓 Insecure	View