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 104.26.10.157 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by tfk-dk.mail.protection.outlook.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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 104.26.10.157 | 300s | — | AS13335 | Cloudflare, Inc. | 104.26.0.0/20 | — | — |
| 104.26.11.157 | 300s | — | AS13335 | Cloudflare, Inc. | 104.26.0.0/20 | — | — |
| 172.67.73.186 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.64.0/18 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.56 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:20::681a:a9d | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:0:0:0:0:0:0/41 | — | — |
| 2606:4700:20::681a:b9d | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:0:0:0:0:0:0/41 | — | — |
| 2606:4700:20::ac43:49ba | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:0:0:0:0:0:0/41 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.26.10.157,104.26.11.157,172.67.73.186 ipv6hint=2606:4700:20::681a:a9d,2606:4700:20::681a:b9d,2606:4700:20::ac43:49ba |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| google-site-verification=RLk49lzHRaF_RGTaJp84VFm9q4S-sdLNYexzZ31OxZw |
| MS=ms60015214 |
| v=spf1 include:spf.protection.outlook.com include:spf.mailjet.com ~all |
| Policy | Record (tfk.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:spf.protection.outlook.com include:spf.mailjet.com ~all |
| Policy | Record (_dmarc.tfk.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:3a500e3eefc84d3e889b1eddc321469f@dmarc-reports.cloudflare.net |
| 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 |
| Wildcard | No |
DNS lookups: 2/10 · policy: ~all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2411517166 |
| Primary NS (MNAME) | carter.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2023-10-10 |
| Expires | 2027-10-09 (352d) |
| 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 shown | 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 | 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 |