tfk.dk

📜 Historical scan 2026-06-26 09:26:15 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

tfk.dk is a .dk domain served by 2 nameservers (carter.ns.cloudflare.com, jocelyn.ns.cloudflare.com). It was registered on 10 October 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.46.83 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by tfk-dk.mail.protection.outlook.com. 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 40ms

Nameserver	IP addresses	PTR	ASN / ISP
carter.ns.cloudflare.com	108.162.193.80 172.64.33.80 173.245.59.80 2606:4700:58::adf5:3b50 2803:f800:50::6ca2:c150 2a06:98c1:50::ac40:2150	carter.ns.cloudflare.com carter.ns.cloudflare.com carter.ns.cloudflare.com carter.ns.cloudflare.com carter.ns.cloudflare.com carter.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
jocelyn.ns.cloudflare.com	108.162.192.174 172.64.32.174 173.245.58.174 2606:4700:50::adf5:3aae 2803:f800:50::6ca2:c0ae 2a06:98c1:50::ac40:20ae	jocelyn.ns.cloudflare.com jocelyn.ns.cloudflare.com jocelyn.ns.cloudflare.com jocelyn.ns.cloudflare.com jocelyn.ns.cloudflare.com jocelyn.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 40ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.46.83	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.136.253	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 40ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	tfk-dk.mail.protection.outlook.com	2a01:111:f403:ca04::6 2a01:111:f403:ca04::d 2a01:111:f403:ca09::7 2a01:111:f403:ca09::b 52.101.73.1 52.101.73.24 52.101.73.28 52.101.73.4	mail-db4pr02cu00406.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-am3pr04cu00501.inbound.protection.outlook.com mail-as8pr05cu00300.inbound.protection.outlook.com mail-am7pr05cu00204.inbound.protection.outlook.com mail-am0pr83cu00404.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.8

🔷 AAAA Records (IPv6)#

2 records 45ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:2e53	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::ac43:88fd	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 38ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.46.83,172.67.136.253 ech=AEX+DQBBwgAgACCc3U20C35Wxry+yZWUSII1TtHr1ahttro5K1rJilA8AAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:2e53,2606:4700:3034::ac43:88fd

🔌 SRV Records#

1 records 92ms

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

📝 TXT Records#

2 records 177ms

TXT Record
MS=ms60015214
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (tfk.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.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 2026-10-10 08:08:40

www	104.26.10.157 104.26.11.157 172.67.73.186 2606:4700:20::681a:a9d 2606:4700:20::681a:b9d 2606:4700:20::ac43:49ba (AS13335) (address records, no CNAME)
www vs bare domain	Same network tfk.dk: 104.26.10.157 104.26.11.157 172.67.73.186 2606:4700:20::681a:a9d (AS13335) www.tfk.dk: 104.26.10.157 104.26.11.157 172.67.73.186 2606:4700:20::681a:a9d (AS13335)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

115ms

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

🏷️ SOA#

39ms

Field	Value
Serial	2406416557
Primary NS (MNAME)	carter.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 03:52:38

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2023-10-10
Expires	2027-10-09 (352d)

📋 WHOIS#

⏱️ Lookup Timing#

40ms

AAAA

45ms

TXT

177ms

CAA

44ms

HTTPS

38ms

TLSA

505ms

SOA

39ms

MTA-STS

54ms

DNSSEC

115ms

SRV

92ms

Total

1356ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-05 03:28:50	2337ms	2 NS 3 A 1 MX	🔓 Insecure
2026-09-24 00:47:30	1225ms	2 NS 3 A 1 MX	🔓 Insecure
2026-09-22 09:51:23	1955ms	2 NS 3 A 1 MX	🔓 Insecure
2026-08-23 13:23:20	6486ms	2 NS 3 A 1 MX	🔓 Insecure
2026-08-09 22:28:11	2443ms	2 NS 3 A 1 MX	🔓 Insecure
2026-08-02 20:32:51	10989ms	2 NS 3 A 1 MX	🔓 Insecure
2026-07-24 04:31:23	1438ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-18 13:02:49	11977ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-11 08:25:17	2892ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-10 06:29:19	2750ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-26 09:26:15 shown	1356ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-24 00:18:37	1181ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 23:18:29	2304ms	2 NS 2 A 1 MX	🔓 Insecure