hdc.dk DNS records

🖥️ Nameservers2 records 51ms

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 50ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
84.22.97.57	3600s	angrboda.procore.dk	AS196752	Tilaa B.V.	84.22.96.0/19	🇳🇱 The Netherlands	Woerden

📧 MX Records1 records 40ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
100	43200s	hdc-dk.mail.protection.outlook.com	2a01:111:f403:ca04::6 2a01:111:f403:ca04::e 2a01:111:f403:ca09::20 2a01:111:f403:ca09::c 52.101.68.12 52.101.68.18 52.101.73.15 52.101.73.30	mail-db4pr02cu00406.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-am7pr05cu00306.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

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 172ms

TXT Record
MS=ms22541288
v=spf1 a:mail.halbooking.dk include:spf.protection.outlook.com include:spf.mandrillapp.com -all

✉️ SPF

Policy	Record (hdc.dk)
-all (hard fail)	v=spf1 a:mail.halbooking.dk include:spf.protection.outlook.com include:spf.mandrillapp.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)

🔐 DNSSEC78ms

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

🏷️ SOA0ms

Field	Value
Serial	2026032401
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

51ms

A

50ms

MX

40ms

AAAA

33ms

TXT

172ms

CAA

46ms

HTTPS

37ms

TLSA

411ms

SOA

0ms

MTA-STS

68ms

DNSSEC

78ms

SRV

57ms

Total

931ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 19:46:38	931ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-24 00:15:00	27724ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 11:01:54	1784ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 10:56:40	980ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 10:54:12	913ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 10:54:10	4009ms	2 NS 1 A 1 MX	🔒 Secure	View