itb.dk

📜 Historical scan 2026-06-19 08:08:02 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

itb.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 12 January 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 188.208.36.98 is hosted by Combell NV (AS34762) in Belgium. Mail is handled by itb-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 98ms

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 Records#

1 records 38ms

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 Records#

1 records 31ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	600s	itb-dk.mail.protection.outlook.com	2a01:111:f403:ca04:: 2a01:111:f403:ca04::5 2a01:111:f403:ca09::4 2a01:111:f403:ca09::b 52.101.68.25 52.101.73.11 52.101.73.12 52.101.73.4	mail-db3pr0202cu00100.inbound.protection.outlook.com mail-db3pr0202cu00205.inbound.protection.outlook.com mail-am0pr04cu00504.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-am4pr0401cu00104.inbound.protection.outlook.com mail-am0pr83cu00404.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 → 52.98.154.136

🔷 AAAA Records (IPv6)#

1 records 103ms

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 Records#

3 records 164ms

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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-08 00:08:12

www CNAME	itb.dk (all on itb.dk) → 188.208.36.98 2a00:1c98:1000:1263:0:3:6109:8c0e (AS34762)
www vs bare domain	Same network itb.dk: 188.208.36.98 2a00:1c98:1000:1263:0:3:6109:8c0e (AS34762) www.itb.dk: 188.208.36.98 2a00:1c98:1000:1263:0:3:6109:8c0e (AS34762)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
k1	dkim.mcsv.net	RSA · ~1024 bit below 2048 bit
selector1	selector1-itb-dk._domainkey.itbranchen.onmicrosoft.com	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

56ms

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

🏷️ SOA#

33ms

Field	Value
Serial	2026052501
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-15 17:45:41

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1998-01-12
Expires	2027-03-31 (164d)

🔗 Same registrant#

0 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

98ms

38ms

31ms

AAAA

103ms

TXT

164ms

CAA

53ms

HTTPS

64ms

TLSA

687ms

SOA

33ms

MTA-STS

99ms

DNSSEC

56ms

SRV

108ms

Total

1379ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 00:08:12	879ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-26 12:17:23	1417ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-31 00:11:57	925ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-26 08:20:23	1429ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-16 11:24:33	17266ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-26 16:31:49	2722ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-27 02:42:46	1468ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-19 08:08:02 shown	1379ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 14:55:03	2214ms	2 NS 1 A 1 MX	🔒 Secure