ckrbyg.dk

Records from scan: 2026-10-21 09:01:04 · 1490ms total · last checked 2026-10-25 13:30 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

ckrbyg.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 17 September 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.40.28 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by ckrbyg-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 35ms

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 31ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.40.28	600s	vm1413.enterprisecloud.nu	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 40ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	ckrbyg-dk.mail.protection.outlook.com	2a01:111:f403:c967:: 2a01:111:f403:c967::2 2a01:111:f403:c967::4 2a01:111:f403:c967::6 52.101.209.2 52.101.209.4 52.101.209.6 52.101.209.74	mail-cpcp307cu00400.inbound.protection.outlook.com mail-cpap307cu00402.inbound.protection.outlook.com mail-cpap307cu00204.inbound.protection.outlook.com mail-cpcp307cu00206.inbound.protection.outlook.com mail-cpap307cu00402.inbound.protection.outlook.com mail-cpap307cu00204.inbound.protection.outlook.com mail-cpcp307cu00206.inbound.protection.outlook.com mail-cpcp307cu00402.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 → 52.98.149.136
🔶 Autoconfig	185.21.40.28

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 182ms

TXT Record
MS=ms86126110
v=spf1 include:spf.protection.outlook.com include:_custspf.one.com -all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.ckrbyg.dk)
p=reject	v=DMARC1; p=reject

📬 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#

checked 2026-10-21 09:01:04

www	185.21.40.28 (AS48854) (address records, no CNAME)
www vs bare domain	Same network ckrbyg.dk: 185.21.40.28 (AS48854) www.ckrbyg.dk: 185.21.40.28 (AS48854)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-ckrbyg-dk._domainkey.ckrbyg2026.k-v1.dkim.mail.microsoft	RSA · ~2048 bit
selector2	selector2-ckrbyg-dk._domainkey.ckrbyg2026.k-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: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

65ms

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

🏷️ SOA#

49ms

Field	Value
Serial	2026101708
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 2026-10-16 22:27:41

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2020-09-17
Expires	2027-03-03 (128d)

🔗 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#

35ms

31ms

40ms

AAAA

30ms

TXT

182ms

CAA

35ms

HTTPS

30ms

TLSA

909ms

SOA

49ms

MTA-STS

51ms

DNSSEC

65ms

SRV

79ms

Total

1490ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-21 09:01:04 shown	1490ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-20 08:31:49	1567ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-18 05:51:56	2283ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-05 18:28:17	623ms	2 NS 1 A 4 MX	🔒 Secure
2026-09-12 19:52:39	1207ms	2 NS 1 A 4 MX	🔒 Secure
2026-09-08 06:47:08	839ms	2 NS 1 A 4 MX	🔒 Secure
2026-08-25 10:07:22	4524ms	2 NS 1 A 4 MX	🔒 Secure
2026-08-18 04:16:39	977ms	2 NS 1 A 4 MX	🔒 Secure
2026-08-08 03:29:18	1055ms	2 NS 1 A 4 MX	🔒 Secure
2026-08-04 21:47:58	1107ms	2 NS 1 A 4 MX	🔒 Secure
2026-07-28 03:35:37	1081ms	2 NS 1 A 4 MX	🔒 Secure
2026-07-27 03:28:32	16948ms	2 NS 1 A 4 MX	🔒 Secure
2026-07-26 03:19:21	1075ms	2 NS 1 A 4 MX	🔒 Secure
2026-07-25 03:10:12	969ms	2 NS 1 A 4 MX	🔒 Secure
2026-07-24 02:49:28	1158ms	2 NS 1 A 4 MX	🔒 Secure
2026-07-23 01:18:09	900ms	2 NS 1 A 4 MX	🔒 Secure
2026-07-21 20:01:06	1131ms	2 NS 1 A 4 MX	🔒 Secure
2026-07-20 14:43:17	857ms	2 NS 1 A 4 MX	🔒 Secure
2026-07-19 10:20:31	1044ms	2 NS 1 A 4 MX	🔒 Secure
2026-07-18 01:51:45	4115ms	2 NS 1 A 4 MX	🔒 Secure
2026-07-15 23:40:58	1611ms	2 NS 1 A 4 MX	🔒 Secure
2026-07-08 23:06:35	9234ms	2 NS 1 A 4 MX	🔒 Secure
2026-07-07 01:49:35	1530ms	2 NS 1 A 4 MX	🔒 Secure
2026-07-04 20:50:35	943ms	2 NS 1 A 4 MX	🔒 Secure
2026-07-03 12:10:45	899ms	2 NS 1 A 4 MX	🔒 Secure