ckrbyg.dk

📜 Historical scan 2026-06-20 05:02:21 · ← Latest scan

⬇ 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 mx1.pub.mailpod11-cph3.one.com, mx2.pub.mailpod11-cph3.one.com and 2 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 37ms

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 36ms

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#

4 records 85ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	10800s	mx1.pub.mailpod11-cph3.one.com	104.37.34.230	mx1.pub.mailpod11-cph3.one.com	AS51468 One.com A/S
10	10800s	mx2.pub.mailpod11-cph3.one.com	104.37.34.231	mx2.pub.mailpod11-cph3.one.com	AS51468 One.com A/S
10	10800s	mx3.pub.mailpod11-cph3.one.com	104.37.34.232	mx3.pub.mailpod11-cph3.one.com	AS51468 One.com A/S
10	10800s	mx4.pub.mailpod11-cph3.one.com	104.37.34.233	mx4.pub.mailpod11-cph3.one.com	AS51468 One.com A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	185.21.40.28
🔶 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#

1 records 616ms

TXT Record
v=spf1 include:spf.simply.com include:spf.curanet.dk include:web.shared.mysmtp.com -all

✉️ SPF#

Policy	Record (ckrbyg.dk)
-all (hard fail)	v=spf1 include:spf.simply.com include:spf.curanet.dk include:web.shared.mysmtp.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 2026-10-21 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: 8/10 · policy: -all

warn 8 of the 10 allowed DNS lookups used: one more include can break SPF

🔗 TLSA / DANE#

4 records 56ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1.pub.mailpod11-cph3.one.com	DANE-EE · SPKI · SHA-256	00E55642F312E05CDB899B1433EDF47F…
SMTP _25._tcp.mx2.pub.mailpod11-cph3.one.com	DANE-EE · SPKI · SHA-256	00E55642F312E05CDB899B1433EDF47F…
SMTP _25._tcp.mx3.pub.mailpod11-cph3.one.com	DANE-EE · SPKI · SHA-256	00E55642F312E05CDB899B1433EDF47F…
SMTP _25._tcp.mx4.pub.mailpod11-cph3.one.com	DANE-EE · SPKI · SHA-256	00E55642F312E05CDB899B1433EDF47F…

🔐 DNSSEC#

114ms

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

🏷️ SOA#

35ms

Field	Value
Serial	2026061901
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 (129d)

🔗 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#

37ms

36ms

85ms

AAAA

36ms

TXT

616ms

CAA

39ms

HTTPS

35ms

TLSA

56ms

SOA

35ms

MTA-STS

40ms

DNSSEC

114ms

SRV

141ms

Total

1065ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-21 09:01:04	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