kvk-byg.dk

📜 Historical scan 2026-06-22 09:57:24 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

kvk-byg.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 27 March 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.40.175 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by kvkbyg-dk0i.mail.protection.outlook.com. 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 221ms

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 284ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.40.175	3600s	vm1484.enterprisecloud.nu	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 102ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	kvkbyg-dk0i.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca04::a 2a01:111:f403:ca09:: 2a01:111:f403:ca09::d 52.101.68.15 52.101.73.153 52.101.73.19 52.101.73.2	mail-du2pr03cu00102.inbound.protection.outlook.com mail-du0pr03cu00102.inbound.protection.outlook.com mail-am3pr04cu00500.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-as8pr05cu00401.inbound.protection.outlook.com mail-as8pr04cu00803.inbound.protection.outlook.com mail-as9pr07cu00302.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
🔶 Autoconfig	185.21.40.175

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 1403ms

TXT Record
MS=ms76099340
v=spf1 a include:spf.curanet.dk include:spf.simply.com include:spf.onlinemail.io include:web.shared.mysmtp.com include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (kvk-byg.dk)
-all (hard fail)	v=spf1 a include:spf.curanet.dk include:spf.simply.com include:spf.onlinemail.io include:web.shared.mysmtp.com include:spf.protection.outlook.com -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 2026-10-23 06:19:47

www	185.21.40.175 (AS48854) (address records, no CNAME)
www vs bare domain	Same network kvk-byg.dk: 185.21.40.175 (AS48854) www.kvk-byg.dk: 185.21.40.175 (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

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-kvkbyg-dk0i._domainkey.kvkbyg.p-v1.dkim.mail.microsoft	RSA · ~2048 bit
selector2	selector2-kvkbyg-dk0i._domainkey.kvkbyg.p-v1.dkim.mail.microsoft	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: 13/10 · policy: -all

error 13 DNS lookups: the limit is 10, so a receiver whose evaluation gets past the 10th returns permerror (SPF fails)

🔗 TLSA / DANE#

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

🔐 DNSSEC#

1348ms

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

🏷️ SOA#

93ms

Field	Value
Serial	2025112401
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 2026-10-23 15:34:24

Field	Value
Registrar	CURANET A/S
Registered	2025-03-27
Expires	2027-03-26 (152d)

🔗 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#

221ms

284ms

102ms

AAAA

292ms

TXT

1403ms

CAA

186ms

HTTPS

305ms

TLSA

1035ms

SOA

93ms

MTA-STS

378ms

DNSSEC

1348ms

SRV

437ms

Total

11152ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-23 06:19:47	459ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-27 15:01:24	1296ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-30 15:12:00	1213ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-24 19:30:39	1722ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-22 15:01:19	915ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-22 09:57:24 shown	11152ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-21 19:07:04	1010ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 12:14:09	3391ms	2 NS 1 A 1 MX	🔒 Secure