corebolig.dk

📜 Historical scan 2026-09-02 01:42:16 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

corebolig.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 3 December 2018 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.40.246 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by corebolig-dk.k-v1.mx.microsoft. 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 64ms

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 49ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.40.246	3600s	linux5.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 36ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	corebolig-dk.k-v1.mx.microsoft	2a01:111:f403:ca04::d 2a01:111:f403:ca04::f 2a01:111:f403:ca48::12 2a01:111:f403:ca48::a 52.101.68.0 52.101.68.15 52.101.68.32 52.101.68.8	mail-db6pr03cu00105.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-miypr05cu00202.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-db3pr0202cu00100.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-du0pr03cu00100.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 → 40.104.116.24
🔶 Autoconfig	185.21.40.246

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 78ms

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

📝 TXT Records#

1 records 134ms

TXT Record
v=spf1 include:spf.protection.outlook.com include:spf.lmhosting.dk -all

✉️ SPF#

Policy	Record (corebolig.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.lmhosting.dk -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 2026-10-10 13:45:53

www	185.21.40.246 (AS48854) (address records, no CNAME)
www vs bare domain	Same network corebolig.dk: 185.21.40.246 (AS48854) www.corebolig.dk: 185.21.40.246 (AS48854)
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

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

error include:spf.lmhosting.dk has no SPF record: receivers that reach it return permerror (RFC 7208 §5.2)

🔗 TLSA / DANE#

4 records 86ms

Service / Owner	Type	Cert association
SMTP _25._tcp.corebolig-dk.k-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	C1AD7778796D20BCA65C889A26550211…
SMTP _25._tcp.corebolig-dk.k-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	54883CC5F1849331E6BF5002C3129D20…
SMTP _25._tcp.corebolig-dk.k-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	EA7A25255D111FC3CE4CB8FABE3ADF9C…
SMTP _25._tcp.corebolig-dk.k-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	803F7447CC75B208DBCA042346F5D8DF…

🔐 DNSSEC#

84ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2025020404
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-16 00:53:57

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2018-12-03
Expires	2026-12-31 (75d)

🔗 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#

64ms

49ms

36ms

AAAA

38ms

TXT

134ms

CAA

49ms

HTTPS

33ms

TLSA

86ms

SOA

0ms

MTA-STS

71ms

DNSSEC

84ms

SRV

78ms

Total

658ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 20:25:44	649ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 02:36:31	584ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-26 10:43:31	655ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-02 01:42:16 shown	658ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-28 09:32:36	877ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-26 18:00:18	1223ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-24 14:46:21	1209ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 22:26:54	2614ms	2 NS 1 A 1 MX	🔒 Secure