kfbu.dk

📜 Historical scan 2026-09-28 07:17:17 · ← 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 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 34ms

Nameserver	IP addresses	PTR	ASN / 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 41ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
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 51ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
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#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.40

🔷 AAAA Records (IPv6)#

2 records 33ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
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 53ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.28.132,172.67.146.52 ech=AEX+DQBBYQAgACB1g512y2Qo+zK/DVU+Nf1cVQGlBML7X0kSaJ/ubHIsNgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:1c84,2606:4700:3037::ac43:9234

🔌 SRV Records#

1 records 112ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

3 records 174ms

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#

Policy	Record (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

www	93.180.82.38 (address records, no CNAME)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

8 records 73ms

Service / Owner	Type	Cert association
SMTP _25._tcp.dk.mx1.mailanyone.net	DANE-EE · Full cert · SHA-256	443DFE296DAC92DD311766BAD0B04CC7…
SMTP _25._tcp.dk.mx1.mailanyone.net	DANE-EE · Full cert · SHA-256	1AAAC405385DEB66C25E43D629569F6C…
SMTP _25._tcp.dk.mx2.mx25.net	DANE-EE · Full cert · SHA-256	1AAAC405385DEB66C25E43D629569F6C…
SMTP _25._tcp.dk.mx2.mx25.net	DANE-EE · Full cert · SHA-256	443DFE296DAC92DD311766BAD0B04CC7…
SMTP _25._tcp.dk.mx3.mailanyone.net	DANE-EE · Full cert · SHA-256	443DFE296DAC92DD311766BAD0B04CC7…
SMTP _25._tcp.dk.mx3.mailanyone.net	DANE-EE · Full cert · SHA-256	1AAAC405385DEB66C25E43D629569F6C…
SMTP _25._tcp.dk.mx4.mx25.net	DANE-EE · Full cert · SHA-256	443DFE296DAC92DD311766BAD0B04CC7…
SMTP _25._tcp.dk.mx4.mx25.net	DANE-EE · Full cert · SHA-256	1AAAC405385DEB66C25E43D629569F6C…

🔐 DNSSEC#

106ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

0ms

Field	Value
Serial	2415990988
Primary NS (MNAME)	dana.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

34ms

41ms

51ms

AAAA

33ms

TXT

174ms

CAA

51ms

HTTPS

53ms

TLSA

73ms

SOA

0ms

MTA-STS

74ms

DNSSEC

106ms

SRV

112ms

Total

1547ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 06:37:15	866ms	2 NS 2 A 4 MX	🔓 Insecure
2026-09-28 07:17:17 shown	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	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