fischerserver.dk is a .dk domain served by 2 nameservers (tanner.ns.cloudflare.com, tia.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.26.168 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by .. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 104.21.26.168 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.137.100 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | . Null MX — domain accepts no email (RFC 7505) | |||
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3033::ac43:8964 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3035::6815:1aa8 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.26.168,172.67.137.100 ech=AEX+DQBB3AAgACBwFgRh/Nt5dvNhL9w5hRs6L/O30NnYyFzO/O2jA39NSgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::ac43:8964,2606:4700:3035::6815:1aa8 |
| www | 104.21.26.168 172.67.137.100 2606:4700:3033::ac43:8964 2606:4700:3035::6815:1aa8 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network fischerserver.dk: 104.21.26.168 172.67.137.100 2a06:98c1:3120::1 2a06:98c1:3121::1 (AS13335) www.fischerserver.dk: 104.21.26.168 172.67.137.100 2606:4700:3033::ac43:8964 2606:4700:3035::6815:1aa8 (AS13335) |
| Wildcard | No |
| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.fischerserver.dk | csqjXX-NXhg8Rl0wNNCt4yeMnBpv_vnJTXvFQgHYVOA |
| TXT | _acme-challenge.fischerserver.dk | kttkluzfQoeRQtCRboQrajzY2Imaeu2BikVUkjPHiT4 |
| 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 | 2414624865 |
| Primary NS (MNAME) | tanner.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-01 00:21:25 | 602ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-18 18:08:05 | 948ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-11 17:19:56 shown | 1140ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-03 09:29:10 | 1394ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-28 07:07:50 | 774ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-25 15:59:19 | 775ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-22 10:18:27 | 16917ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-26 03:00:12 | 1915ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-15 00:15:11 | 943ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-28 22:18:57 | 804ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-25 06:20:30 | 1306ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-23 00:49:43 | 699ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-23 00:17:06 | 816ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-19 13:08:09 | 790ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 10:03:19 | 1126ms | 2 NS 2 A 0 MX | 🔓 Insecure |