birkeholdt.dk

📜 Historical scan 2026-06-28 06:06:44 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

birkeholdt.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 18 July 2003 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 168.63.63.30 is hosted by Microsoft Corporation (AS8075) in Ireland. Mail is handled by birkeholdt-dk.mail.protection.outlook.com, mx1.onlinemail.io and 1 more. The zone is DNSSEC-signed and validates, has no 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#

2 records 21ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 24ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
168.63.63.30	3600s	—	AS8075	Microsoft Corporation	168.62.0.0/15	🇮🇪 Ireland	Dublin

📧 MX Records#

3 records 33ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	birkeholdt-dk.mail.protection.outlook.com	2a01:111:f403:ca09:: 2a01:111:f403:ca09::20 2a01:111:f403:ca09::5 2a01:111:f403:ca09::7 52.101.68.25 52.101.68.29 52.101.68.3 52.101.73.6	mail-am3pr04cu00500.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-db7pr03cu00403.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
9	3600s	mx1.onlinemail.io	185.21.42.12	mx1.onlinemail.io	AS48854 team.blue Denmark A/S
20	3600s	mx2.onlinemail.io	46.36.208.16	mx2.onlinemail.io	AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.40
🔶 Autoconfig	168.63.63.30

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 35ms

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

📝 TXT Records#

2 records 131ms

TXT Record
MS=ms76775313
v=spf1 include:spf.curanet.dk include:spf.protection.outlook.com a:mail10.curanet.dk a:filter3.mail.cyso.net a:filter4.mail.cyso.net -all

✉️ SPF#

Policy	Record (birkeholdt.dk)
-all (hard fail)	v=spf1 include:spf.curanet.dk include:spf.protection.outlook.com a:mail10.curanet.dk a:filter3.mail.cyso.net a:filter4.mail.cyso.net -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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-09 14:53:07

www	168.63.63.30 (AS8075) (address records, no CNAME)
www vs bare domain	Same network birkeholdt.dk: 168.63.63.30 (AS8075) www.birkeholdt.dk: 168.63.63.30 (AS8075)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-birkeholdt-dk._domainkey.birkeholdt.onmicrosoft.com	RSA · ~1024 bit below 2048 bit
selector2	selector2-birkeholdt-dk._domainkey.birkeholdt.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: 7/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

61ms

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

🏷️ SOA#

29ms

Field	Value
Serial	2022110701
Primary NS (MNAME)	ns1.123hotel.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-11 01:06:17

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2003-07-18
Expires	2027-07-31 (279d)

📋 WHOIS#

⏱️ Lookup Timing#

21ms

24ms

33ms

AAAA

35ms

TXT

131ms

CAA

30ms

HTTPS

33ms

TLSA

130ms

SOA

29ms

MTA-STS

26ms

DNSSEC

61ms

SRV

35ms

Total

801ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 14:53:07	1011ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 20:27:00	1158ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-20 14:42:35	3134ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-02 10:38:44	1372ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-28 06:06:44 shown	801ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-24 06:24:57	760ms	2 NS 1 A 3 MX	⚠️ Bogus
2026-06-20 22:30:41	805ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-20 17:05:59	1039ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-19 22:57:10	2589ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-16 14:47:54	863ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-16 14:40:39	757ms	2 NS 1 A 3 MX	🔒 Secure