kfbu.dk

📜 Historical scan 2026-09-01 15:06:21  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

kfbu.dk is a .dk domain served by 2 nameservers (dana.ns.cloudflare.com, john.ns.cloudflare.com). It was registered on 28 May 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.28.132 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by dk.mx1.mailanyone.net, dk.mx2.mx25.net and 2 more. The zone is not DNSSEC-signed, has no 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   80ms
NameserverIP addressesPTRASN / ISP
dana.ns.cloudflare.com 108.162.192.105
172.64.32.105
173.245.58.105
2606:4700:50::adf5:3a69
2803:f800:50::6ca2:c069
2a06:98c1:50::ac40:2069		 dana.ns.cloudflare.com
dana.ns.cloudflare.com
dana.ns.cloudflare.com
dana.ns.cloudflare.com
dana.ns.cloudflare.com
dana.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
john.ns.cloudflare.com 108.162.193.185
172.64.33.185
173.245.59.185
2606:4700:58::adf5:3bb9
2803:f800:50::6ca2:c1b9
2a06:98c1:50::ac40:21b9		 john.ns.cloudflare.com
john.ns.cloudflare.com
john.ns.cloudflare.com
john.ns.cloudflare.com
john.ns.cloudflare.com
john.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   108ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.28.132 300s — AS13335 Cloudflare, Inc. 104.21.0.0/17 — —
172.67.146.52 300s — AS13335 Cloudflare, Inc. 172.67.128.0/17 — —

📧 MX Records#

4 records   131ms
PriorityTTLMail ServerIP addressesPTRASN
10 300s dk.mx1.mailanyone.net 192.162.219.155
2a01:77c0:1619:4100:6fa6:1315:2bd2:51cd		 mx41.electric.net
mx11.electric.net		 AS16509 Amazon.com, Inc.
AS16509 Amazon.com, Inc.
20 300s dk.mx2.mx25.net 192.162.219.49 mx41.electric.net AS16509 Amazon.com, Inc.
30 300s dk.mx3.mailanyone.net 192.162.219.255
2a01:77c0:1619:4101:d99:c22:fb4d:290e		 mx41.electric.net
mx10.electric.net		 AS16509 Amazon.com, Inc.
AS16509 Amazon.com, Inc.
40 300s dk.mx4.mx25.net 192.162.219.255 mx41.electric.net AS16509 Amazon.com, Inc.

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscoverautodiscover.outlook.com → 52.98.154.136

🔷 AAAA Records (IPv6)#

2 records   73ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:3031::6815:1c84 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —
2606:4700:3037::ac43:9234 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —

🔐 HTTPS Records#

1 records   61ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.28.132,172.67.146.52 ech=AEX+DQBBkAAgACDg2Vj95DTnMoBzZqStrQjUWeAeRnEh8QgpP5Gf87BuTwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:1c84,2606:4700:3037::ac43:9234

🔌 SRV Records#

1 records   241ms
ServicePriorityWeightPortTarget
_sipfederationtls._tcp 100 1 5061 sipfed.online.lync.com

📝 TXT Records#

3 records   318ms
TXT Record
include:spf.emailsignatures365.com
MS=ms20198090
v=spf1 include:spf.protection.outlook.com include:spf.mailanyone.net ip4:40.118.16.57 -all

✉️ SPF#

PolicyRecord (kfbu.dk)
-all (hard fail) v=spf1 include:spf.protection.outlook.com include:spf.mailanyone.net ip4:40.118.16.57 -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 2026-10-08 11:21:47
www93.180.82.38 (address records, no CNAME)
WildcardNo

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔏 ACME Challenge#

TypeNameValue
TXT _acme-challenge.kfbu.dk rXX11hvChT_5YNgm3iE1l_ibuKhlxGRhKAc3DgLglOk
TXT _acme-challenge.kfbu.dk XtcjzT6k8BxCn2OPGTF22uBZFfUJsVoWhEoJGY_HI7g

🔗 TLSA / DANE#

8 records   223ms
Service / OwnerTypeCert association
SMTP _25._tcp.dk.mx1.mailanyone.net DANE-EE · Full cert · SHA-256 1AAAC405385DEB66C25E43D629569F6C…
SMTP _25._tcp.dk.mx1.mailanyone.net DANE-EE · Full cert · SHA-256 443DFE296DAC92DD311766BAD0B04CC7…
SMTP _25._tcp.dk.mx2.mx25.net DANE-EE · Full cert · SHA-256 443DFE296DAC92DD311766BAD0B04CC7…
SMTP _25._tcp.dk.mx2.mx25.net DANE-EE · Full cert · SHA-256 1AAAC405385DEB66C25E43D629569F6C…
SMTP _25._tcp.dk.mx3.mailanyone.net DANE-EE · Full cert · SHA-256 1AAAC405385DEB66C25E43D629569F6C…
SMTP _25._tcp.dk.mx3.mailanyone.net DANE-EE · Full cert · SHA-256 443DFE296DAC92DD311766BAD0B04CC7…
SMTP _25._tcp.dk.mx4.mx25.net DANE-EE · Full cert · SHA-256 1AAAC405385DEB66C25E43D629569F6C…
SMTP _25._tcp.dk.mx4.mx25.net DANE-EE · Full cert · SHA-256 443DFE296DAC92DD311766BAD0B04CC7…

🔐 DNSSEC#

207ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

0ms
FieldValue
Serial2413749669
Primary NS (MNAME)dana.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-24 12:11:04
FieldValue
RegistrarCURANET A/S
Registered1997-05-28
Expires2027-06-30 (248d)

🔗 Same registrant#

2 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).

DomainRegistrar
børnmedvilje.dkPunktum dk A/S (direct)
specialskills.dkCURANET A/S
📋 WHOIS#

⏱️ Lookup Timing#

NS
80ms
A
108ms
MX
131ms
AAAA
73ms
TXT
318ms
CAA
93ms
HTTPS
61ms
TLSA
223ms
SOA
0ms
MTA-STS
142ms
DNSSEC
207ms
SRV
241ms
Total
1920ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-09-30 06:37:15 866ms 2 NS 2 A 4 MX 🔓 Insecure
2026-09-28 07:17:17 1547ms 2 NS 2 A 4 MX 🔓 Insecure
2026-09-25 06:08:21 947ms 2 NS 2 A 4 MX 🔓 Insecure
2026-09-09 21:43:34 1738ms 2 NS 2 A 4 MX 🔓 Insecure
2026-09-02 21:32:44 2825ms 2 NS 2 A 4 MX 🔓 Insecure
2026-09-01 15:06:21 shown 1920ms 2 NS 2 A 4 MX 🔓 Insecure
2026-08-05 22:41:52 1957ms 2 NS 2 A 4 MX 🔓 Insecure
2026-06-26 09:04:19 960ms 2 NS 2 A 4 MX 🔓 Insecure
2026-06-23 08:11:53 1004ms 0 NS 0 A 0 MX ❓ Unknown
2026-06-17 14:45:57 2221ms 2 NS 2 A 4 MX 🔓 Insecure
dhd.dk [/] search Domains, Hosts & DNS — .dk zone