chatsystems.dk is a .dk domain served by 2 nameservers (dee.ns.cloudflare.com, marty.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.25.139 is hosted by Cloudflare, Inc. (AS13335). The zone is DNSSEC-signed and validates, 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 |
|---|---|---|---|---|---|---|---|
| 104.21.25.139 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.134.73 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 104.21.25.139 |
| 🔶 Autoconfig | 172.67.134.73 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::6815:198b | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3036::ac43:8649 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.25.139,172.67.134.73 ech=AEX+DQBBBwAgACCNba8jf478l+kk3w1Lyy4xZIKgrcaFy+HzK35vjN3TRQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:198b,2606:4700:3036::ac43:8649 |
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (chatsystems.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.chatsystems.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; |
| www | 104.21.25.139 172.67.134.73 2606:4700:3030::6815:198b 2606:4700:3036::ac43:8649 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network chatsystems.dk: 104.21.25.139 172.67.134.73 2606:4700:3030::6815:198b 2606:4700:3036::ac43:8649 (AS13335) www.chatsystems.dk: 104.21.25.139 172.67.134.73 2606:4700:3030::6815:198b 2606:4700:3036::ac43:8649 (AS13335) |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 0/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.chatsystems.dk | vDDOSJhlU1vNiegnBMHtPKaTyVYaM9vHBZbeh_c3yjc |
| TXT | _acme-challenge.chatsystems.dk | vqByLeDsI20iK0c9fAOFdUW8WPHlFzDYuvj7HLF8pHM |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2413053993 |
| Primary NS (MNAME) | dee.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-02 02:33:53 | 714ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-29 01:57:28 | 628ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-23 23:50:44 | 618ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-06 22:31:40 | 1312ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-02 01:20:44 | 641ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-27 16:39:26 | 528ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-24 15:24:37 shown | 3240ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-11 20:39:09 | 4920ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-04 10:58:31 | 1603ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-07-20 00:34:48 | 1005ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-27 09:05:56 | 833ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-26 08:09:44 | 698ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-16 20:26:02 | 513ms | 2 NS 2 A 0 MX | 🔒 Secure |