felder.dk is a .dk domain served by 2 nameservers (rocco.ns.cloudflare.com, sandra.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.19.124 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx3.felder-group.com, mx4.felder-group.com. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.19.124 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.186.42 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mx3.felder-group.com | 80.92.126.18 | mx3.felder-group.com | AS34347 HALLAG Kommunal GmbH |
| 10 | 300s | mx4.felder-group.com | 80.92.126.19 | mx4.felder-group.com | AS34347 HALLAG Kommunal GmbH |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 104.21.19.124 |
| 🔶 Autoconfig | 172.67.186.42 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3037::6815:137c | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::ac43:ba2a | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.19.124,172.67.186.42 ech=AEX+DQBBJQAgACD3NFvMRPoei+/M7Lc9f5ITA0UvwaiAoU2lhEhSDxHrZwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3037::6815:137c,2606:4700:3037::ac43:ba2a |
| TXT Record |
|---|
| v=spf1 a mx ip4:80.92.126.240/32 ip4:80.92.126.241/32 ip4:80.92.126.21/32 ip4:80.92.126.18/32 ip4:80.92.126.19/32 ip4:80.92.117.58/32 ~all |
| Policy | Record (felder.dk) |
|---|---|
| ~all (soft fail) | v=spf1 a mx ip4:80.92.126.240/32 ip4:80.92.126.241/32 ip4:80.92.126.21/32 ip4:80.92.126.18/32 ip4:80.92.126.19/32 ip4:80.92.117.58/32 ~all |
| www | 104.21.19.124 172.67.186.42 2606:4700:3037::6815:137c 2606:4700:3037::ac43:ba2a (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
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 | 2415731021 |
| Primary NS (MNAME) | rocco.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-24 20:01:40 shown | 2702ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-24 15:28:10 | 1655ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-21 23:11:30 | 923ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-16 08:55:38 | 1269ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-07-28 18:48:58 | 1725ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-07-19 07:48:03 | 1518ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-17 10:11:31 | 1314ms | 2 NS 2 A 2 MX | 🔓 Insecure |