katkom.dk is a .dk domain served by 2 nameservers (ada.ns.cloudflare.com, jerome.ns.cloudflare.com). It was registered on 1 November 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.64.191 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. Below are all of its DNS records from our latest 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 |
|---|---|---|---|---|---|---|---|
| 104.21.64.191 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.187.97 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.154.136 |
| 🔶 Autoconfig | 46.30.213.165 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::6815:40bf | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3034::ac43:bb61 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.64.191,172.67.187.97 ech=AEX+DQBBZgAgACBBjmCnKR0ceFCImMXz4F4XaLU4krmwjC1TD8W6wDB4OgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:40bf,2606:4700:3034::ac43:bb61 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| MS=ms73671171 |
| v=spf1 include:spf.protection.outlook.com include:send.one.com include:_custspf.one.com -all |
| Policy | Record (katkom.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com include:send.one.com include:_custspf.one.com -all |
| www | 104.21.64.191 172.67.187.97 2606:4700:3031::6815:40bf 2606:4700:3034::ac43:bb61 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
DNS lookups: 3/10 · policy: -all
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.katkom.dk | katkom.dk.acme.webpod3-cph3.one.com |
| 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 | 2416964545 |
| Primary NS (MNAME) | ada.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 | 2011-11-01 |
| Expires | 2026-11-30 (44d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 05:12:26 shown | 3070ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-10-01 03:55:07 | 1040ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-09-27 14:07:43 | 2807ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-08-27 01:13:52 | 883ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-08-11 01:07:22 | 3484ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-06-28 15:15:35 | 1015ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-06-20 05:47:52 | 2893ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-06-17 13:01:56 | 5270ms | 2 NS 2 A 5 MX | 🔓 Insecure |