ckjaersig.dk

📜 Historical scan 2026-08-20 16:22:14  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

ckjaersig.dk is a .dk domain served by 2 nameservers (bryce.ns.cloudflare.com, kristin.ns.cloudflare.com). It was registered on 31 August 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.9.189 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx.simply.com. The zone is not DNSSEC-signed, 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   74ms
NameserverIP addressesPTRASN / ISP
bryce.ns.cloudflare.com 108.162.195.137
162.159.44.137
172.64.35.137
2606:4700:58::a29f:2c89
2803:f800:50::6ca2:c389
2a06:98c1:50::ac40:2389		 bryce.ns.cloudflare.com
bryce.ns.cloudflare.com
bryce.ns.cloudflare.com
bryce.ns.cloudflare.com
bryce.ns.cloudflare.com
bryce.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
kristin.ns.cloudflare.com 108.162.192.181
172.64.32.181
173.245.58.181
2606:4700:50::adf5:3ab5
2803:f800:50::6ca2:c0b5
2a06:98c1:50::ac40:20b5		 kristin.ns.cloudflare.com
kristin.ns.cloudflare.com
kristin.ns.cloudflare.com
kristin.ns.cloudflare.com
kristin.ns.cloudflare.com
kristin.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   86ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.9.189 300s — AS13335 Cloudflare, Inc. 104.21.0.0/17 — —
172.67.189.132 300s — AS13335 Cloudflare, Inc. 172.67.128.0/17 — —

📧 MX Records#

1 records   61ms
PriorityTTLMail ServerIP addressesPTRASN
10 300s mx.simply.com 94.231.106.20 mx.simply.com AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscover172.67.189.132
🔶 Autoconfig104.21.9.189

🔷 AAAA Records (IPv6)#

2 records   75ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:3033::6815:9bd 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —
2606:4700:3036::ac43:bd84 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —

🔐 HTTPS Records#

1 records   87ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.9.189,172.67.189.132 ech=AEX+DQBBKAAgACB5y/ZwKPE0dxuFdTJZmBfk0rcwZrS4KUQCoYJaKMBAPgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:9bd,2606:4700:3036::ac43:bd84

📝 TXT Records#

2 records   264ms
TXT Record
google-site-verification=SGUnT34zMNNX5odia1atEDjgEpPQ8SE_apr_ZkxGuGs
v=spf1 include:spf.simply.com include:mailgun.org include:relay.mailchannels.net ~all

✉️ SPF#

PolicyRecord (ckjaersig.dk)
~all (soft fail) v=spf1 include:spf.simply.com include:mailgun.org include:relay.mailchannels.net ~all

📨 DMARC#

PolicyRecord (_dmarc.ckjaersig.dk)
p=quarantine v=DMARC1; p=quarantine; rua=mailto:dmarc@ckjaersig.dk

📬 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 2026-10-18 07:20:40
www104.21.9.189 172.67.189.132 2606:4700:3033::6815:9bd 2606:4700:3036::ac43:bd84 (AS13335) (address records, no CNAME)
www vs bare domainSame network
WildcardYes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 7/10 · policy: ~all

No problems found

🔏 ACME Challenge#

TypeNameValue
TXT _acme-challenge.ckjaersig.dk 6Tbb5p5e8DQZebWKEV0ePjhLmrvUhgvQwCxNSnE53EM
TXT _acme-challenge.ckjaersig.dk zEiEaFuTrB6yO2l9kXyoxgogjWAy5ZGNtPKxd_pMwEU

🔗 TLSA / DANE#

2 records   142ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx.simply.com DANE-EE · SPKI · SHA-256 97A3BA009F39C761BFFB6574340E8138…
SMTP _25._tcp.mx.simply.com DANE-EE · SPKI · SHA-256 A9D603AF4D7ED6B9246B4B68500CD6F2…

🔐 DNSSEC#

206ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

0ms
FieldValue
Serial2412647975
Primary NS (MNAME)bryce.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-18 07:59:32
FieldValue
RegistrarSimply.com A/S
Registered2011-08-31
Expires2027-08-31 (316d)

🔗 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#

NS
74ms
A
86ms
MX
61ms
AAAA
75ms
TXT
264ms
CAA
60ms
HTTPS
87ms
TLSA
142ms
SOA
0ms
MTA-STS
107ms
DNSSEC
206ms
SRV
900ms
Total
2342ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-18 07:20:40 732ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-26 22:08:21 705ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-29 20:30:00 1016ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-26 15:13:52 1102ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-25 12:31:38 666ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-20 16:22:14 shown 2342ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-26 15:27:39 596ms 4 NS 1 A 1 MX 🔒 Secure
2026-06-16 22:46:34 65535ms 4 NS 1 A 1 MX 🔒 Secure
2026-06-16 21:24:15 1543ms 4 NS 1 A 1 MX ⚠️ Bogus
2026-06-16 21:09:36 392ms 4 NS 1 A 1 MX ⚠️ Bogus
2026-06-16 21:00:35 625ms 4 NS 1 A 1 MX 🔒 Secure
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