ibuh.dk

📜 Historical scan 2026-10-07 00:18:52 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

ibuh.dk is a .dk domain served by 5 nameservers (ns1.d-n-s.dk, ns2.d-n-s.dk, ns3.d-n-s.dk and 2 more). It was registered on 26 March 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by ibuh-dk.mail.protection.outlook.com. The zone is of unknown DNSSEC status, publishes a DMARC policy and has no IPv6 address. 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#

5 records 1157ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.d-n-s.dk	185.215.92.135	—	AS209959 Mark Weber Andersen
ns2.d-n-s.dk	185.215.92.136	—	AS209959 Mark Weber Andersen
ns3.d-n-s.dk	185.215.92.137	—	AS209959 Mark Weber Andersen
ns4.d-n-s.dk	185.215.92.138	—	AS209959 Mark Weber Andersen
ns5.d-n-s.dk	185.215.92.139	—	AS209959 Mark Weber Andersen

🌍 A Records#

🌍

No A records found

📧 MX Records#

1 records 1193ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	ibuh-dk.mail.protection.outlook.com	2a01:111:f403:ca21::8 2a01:111:f403:ca38::8 2a01:111:f403:ca3c::6 2a01:111:f403:ca48::12 52.101.185.114 52.101.209.153 52.101.68.8 52.101.73.155	mail-matpr04cu00100.inbound.protection.outlook.com mail-wa4pr04cu00100.inbound.protection.outlook.com mail-zrxpr04cu00106.inbound.protection.outlook.com mail-miypr05cu00202.inbound.protection.outlook.com mail-zrxpr04cu00102.inbound.protection.outlook.com mail-cpjpr04cu00101.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-am7pr02cu00203.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)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 1484ms

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

📝 TXT Records#

3 records 1587ms

TXT Record
DNS-Service by D-N-S.DK
MS=ms76762420
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.ibuh.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:dmarc@ibuh.dk; ruf=mailto:dmarc@ibuh.dk;

📬 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 00:23:05

www	NXDOMAIN
www vs bare domain	Neither resolves ibuh.dk: no address www.ibuh.dk: no address
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-ibuh-dk._domainkey.ibuholding.onmicrosoft.com	RSA · ~1024 bit below 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: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

1314ms

Check	Result
Validation Status	❓ Unknown
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: failure

🏷️ SOA#

✗ No SOA record found

📋 Registration#

WHOIS fetched 2026-10-19 11:11:21

Field	Value
Registrar	CURANET A/S
Registered	2025-03-26
Expires	2027-03-25 (156d)

🔗 Same registrant#

4 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).

Domain	Registrar
roedkaer.dk	CURANET A/S
synnedrupgaard.dk	CURANET A/S
ulla-andersen.dk	CURANET A/S
workreg.dk	CURANET A/S

📋 WHOIS#

⏱️ Lookup Timing#

1157ms

1130ms

1193ms

AAAA

1209ms

TXT

1587ms

CAA

1188ms

HTTPS

1202ms

TLSA

815ms

SOA

50ms

MTA-STS

1262ms

DNSSEC

1314ms

SRV

1484ms

Total

24438ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 00:23:05	22340ms	5 NS 0 A 1 MX	🔓 Insecure
2026-10-07 00:18:52 shown	24438ms	5 NS 0 A 1 MX	❓ Unknown
2026-10-03 23:02:10	9637ms	5 NS 0 A 1 MX	🔓 Insecure
2026-09-09 23:38:03	8653ms	5 NS 0 A 0 MX	🔓 Insecure
2026-09-07 08:01:07	21072ms	5 NS 0 A 1 MX	🔓 Insecure
2026-09-05 22:59:38	23375ms	5 NS 0 A 1 MX	🔓 Insecure
2026-08-28 00:05:13	5077ms	5 NS 0 A 1 MX	🔓 Insecure
2026-08-26 09:37:15	5398ms	5 NS 0 A 1 MX	🔓 Insecure
2026-08-21 02:28:22	12299ms	5 NS 0 A 1 MX	🔓 Insecure
2026-08-20 00:47:35	26078ms	5 NS 0 A 1 MX	🔓 Insecure
2026-08-17 09:14:33	18449ms	5 NS 0 A 1 MX	🔓 Insecure
2026-06-23 12:52:30	993ms	5 NS 0 A 1 MX	🔓 Insecure
2026-06-17 14:16:36	6007ms	5 NS 0 A 1 MX	🔓 Insecure