cbirkkjaer.dk

📜 Historical scan 2026-09-30 18:50:12 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cbirkkjaer.dk is a .dk domain served by 2 nameservers (chance.ns.cloudflare.com, rita.ns.cloudflare.com). It was registered on 8 September 2008 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.82.95 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 5 more. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. 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 46ms

Nameserver	IP addresses	PTR	ASN / ISP
chance.ns.cloudflare.com	108.162.195.33 162.159.44.33 172.64.35.33 2606:4700:58::a29f:2c21 2803:f800:50::6ca2:c321 2a06:98c1:50::ac40:2321	chance.ns.cloudflare.com chance.ns.cloudflare.com chance.ns.cloudflare.com chance.ns.cloudflare.com chance.ns.cloudflare.com chance.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
rita.ns.cloudflare.com	108.162.192.140 172.64.32.140 173.245.58.140 2606:4700:50::adf5:3a8c 2803:f800:50::6ca2:c08c 2a06:98c1:50::ac40:208c	rita.ns.cloudflare.com rita.ns.cloudflare.com rita.ns.cloudflare.com rita.ns.cloudflare.com rita.ns.cloudflare.com rita.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 35ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.82.95	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.199.225	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

7 records 45ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	aspmx.l.google.com	2a00:1450:4010:c0e::1b 2a00:1450:4010:c0e::1b 64.233.164.26	lu-in-f27.1e100.net lu-in-x1b.1e100.net lf-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
20	300s	alt1.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1a	lcdels-in-f27.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
20	300s	alt2.aspmx.l.google.com	173.194.41.26 173.194.41.26 2404:6800:4001:c01::1b	mad01s14-in-f26.1e100.net yukulwh-in-f26.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
30	300s	aspmx2.googlemail.com	192.178.158.26 2404:6800:4013:813::1b	lcdels-in-f26.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
30	300s	aspmx3.googlemail.com	173.194.41.27 173.194.41.27 2404:6800:4001:c01::1b	yukulwh-in-f27.1e100.net mad01s14-in-f27.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
30	300s	aspmx4.googlemail.com	172.253.158.26 2404:6800:4003:c26::1a	so-in-f26.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
30	300s	aspmx5.googlemail.com	108.177.125.26 2404:6800:4008:c01::1a	tp-in-f26.1e100.net tp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

2 records 36ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3036::ac43:c7e1	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::6815:525f	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 39ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.82.95,172.67.199.225 ech=AEX+DQBBiwAgACCLF6PJdl8GShbwHdy9bDUhXsYaw0Dzjw4BVz/THOM2FQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3036::ac43:c7e1,2606:4700:3037::6815:525f

📝 TXT Records#

1 records 197ms

TXT Record
v=spf1 include:_spf.google.com ~all

✉️ SPF#

Policy	Record (cbirkkjaer.dk)
~all (soft fail)	v=spf1 include:_spf.google.com ~all

📨 DMARC#

Policy	Record (_dmarc.cbirkkjaer.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:2b7e82c210e44ad2931d2f0c97f9f56c@dmarc-reports.cloudflare.net

📬 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 08:48:44

www	Exists, no address
www vs bare domain	www does not resolve cbirkkjaer.dk: 104.21.82.95 172.67.199.225 2606:4700:3036::ac43:c7e1 2606:4700:3037::6815:525f (AS13335) www.cbirkkjaer.dk: no address (all like this)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
google	—	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: 1/10 · policy: ~all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.cbirkkjaer.dk	IETJ2mu7wSpF7SScQNZvBj7BdXlg3ihy8aofOORyybY
TXT	_acme-challenge.cbirkkjaer.dk	NffYTUZ5PnB55ArY07i56UnndPnATjyTtMIqQyM747A

🔗 TLSA / DANE#

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

🔐 DNSSEC#

127ms

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

🏷️ SOA#

34ms

Field	Value
Serial	2416250875
Primary NS (MNAME)	chance.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-05 11:15:17

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2008-09-08
Expires	2027-09-30 (344d)

📋 WHOIS#

⏱️ Lookup Timing#

46ms

35ms

45ms

AAAA

36ms

TXT

197ms

CAA

46ms

HTTPS

39ms

TLSA

143ms

SOA

34ms

MTA-STS

53ms

DNSSEC

127ms

SRV

69ms

Total

1162ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-21 08:48:44	585ms	2 NS 2 A 7 MX	🔒 Secure
2026-10-19 00:49:34	894ms	2 NS 2 A 7 MX	🔒 Secure
2026-10-18 00:00:00	1634ms	2 NS 2 A 7 MX	🔒 Secure
2026-10-14 21:12:33	1750ms	2 NS 2 A 7 MX	🔒 Secure
2026-10-13 20:20:56	1477ms	2 NS 2 A 7 MX	🔒 Secure
2026-10-12 18:57:47	1473ms	2 NS 2 A 7 MX	🔒 Secure
2026-10-10 17:01:05	5126ms	2 NS 2 A 7 MX	🔒 Secure
2026-10-08 13:24:55	1565ms	2 NS 2 A 7 MX	🔒 Secure
2026-10-07 13:15:18	1341ms	2 NS 2 A 7 MX	🔒 Secure
2026-10-04 03:01:13	4344ms	2 NS 2 A 7 MX	🔒 Secure
2026-10-01 18:53:47	1289ms	2 NS 2 A 7 MX	🔒 Secure
2026-09-30 18:50:12 shown	1162ms	2 NS 2 A 7 MX	🔒 Secure
2026-09-28 18:32:37	966ms	2 NS 2 A 7 MX	🔒 Secure
2026-09-27 18:15:48	1104ms	2 NS 2 A 7 MX	🔒 Secure
2026-09-25 17:55:18	964ms	2 NS 2 A 7 MX	🔒 Secure
2026-09-14 22:23:03	2714ms	2 NS 2 A 7 MX	🔒 Secure
2026-09-07 20:08:00	2585ms	2 NS 2 A 7 MX	🔒 Secure
2026-08-31 06:22:59	2429ms	2 NS 2 A 7 MX	🔒 Secure
2026-08-28 08:43:29	882ms	2 NS 2 A 7 MX	🔒 Secure
2026-08-26 20:59:22	978ms	2 NS 2 A 7 MX	🔒 Secure
2026-08-23 04:29:53	11008ms	2 NS 2 A 7 MX	🔒 Secure
2026-08-22 04:22:10	1966ms	2 NS 2 A 7 MX	🔒 Secure
2026-08-19 01:59:16	17828ms	2 NS 2 A 7 MX	🔒 Secure
2026-08-17 19:39:21	1855ms	2 NS 2 A 7 MX	🔒 Secure
2026-08-14 18:49:14	3490ms	2 NS 2 A 7 MX	🔒 Secure