itb.dk DNS records

🖥️ Nameservers2 records 25ms

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 25ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
188.208.36.98	600s	188.208.36.98.static.hosted.by.combell-ops.net	AS34762	Combell NV	188.208.36.0/23	🇧🇪 Belgium	—

📧 MX Records1 records 30ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	600s	itb-dk.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca04::a 2a01:111:f403:ca09::e 2a01:111:f403:ca48::8 52.101.68.21 52.101.73.1 52.101.73.145 52.101.73.6	mail-dbapr03cu00100.inbound.protection.outlook.com mail-du0pr03cu00102.inbound.protection.outlook.com mail-am7pr05cu00206.inbound.protection.outlook.com mail-miypr02cu00100.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-am3pr04cu00501.inbound.protection.outlook.com mail-am6pr02cu00301.inbound.protection.outlook.com mail-am6pr04cu00306.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 24ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a00:1c98:1000:1263:0:3:6109:8c0e	600s	—	AS34762	Combell NV	2a00:1c98:0:0:0:0:0:0/32	🇧🇪 Belgium	—

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records3 records 151ms

TXT Record
linkedin-site-verification=2cce0c2f-c1c7-419e-8bbf-c62552ca79cc
openai-domain-verification=dv-XCKVH0oneE8lW4o3qQkZ7uT6
v=spf1 include:spf.protection.outlook.com include:spfrerouting.xink.io -all

✉️ SPF

Policy	Record (itb.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spfrerouting.xink.io -all

📨 DMARC

Policy	Record (_dmarc.itb.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:63e3a10d43db6@dmarc.centerasecurity.com;

📬 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)

🔐 DNSSEC96ms

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

25ms

A

25ms

MX

30ms

AAAA

24ms

TXT

151ms

CAA

27ms

HTTPS

41ms

TLSA

415ms

SOA

0ms

MTA-STS

41ms

DNSSEC

96ms

SRV

50ms

Total

925ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-31 00:11:57	925ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-26 08:20:23	1429ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-16 11:24:33	17266ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-26 16:31:49	2722ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-27 02:42:46	1468ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-19 08:08:02	1379ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 14:55:03	2214ms	2 NS 1 A 1 MX	🔒 Secure	View