fsociety.dk is a .dk domain served by 2 nameservers (cecelia.ns.cloudflare.com, jonah.ns.cloudflare.com). It was registered on 15 April 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.17.91 is hosted by Cloudflare, Inc. (AS13335). The zone is DNSSEC-signed and validates, 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 |
|---|---|---|---|---|---|---|---|
| 104.21.17.91 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.175.105 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::ac43:af69 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::6815:115b | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.17.91,172.67.175.105 ech=AEX+DQBBTAAgACCwsNV9gfosRum5G2GyMHjXlt1GKY1Nm3A5OzsBAsosfgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:af69,2606:4700:3037::6815:115b |
| www | 104.21.17.91 172.67.175.105 2606:4700:3030::ac43:af69 2606:4700:3037::6815:115b (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network fsociety.dk: 104.21.17.91 172.67.175.105 2606:4700:3030::ac43:af69 2606:4700:3037::6815:115b (AS13335) www.fsociety.dk: 104.21.17.91 172.67.175.105 2606:4700:3030::ac43:af69 2606:4700:3037::6815:115b (AS13335) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2417471691 |
| Primary NS (MNAME) | cecelia.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 | 2019-04-15 |
| Expires | 2027-04-30 (195d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-17 06:21:18 shown | 2229ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-10-16 04:45:33 | 1972ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-10-15 02:52:51 | 2503ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-22 00:27:15 | 854ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-06 15:47:20 | 1523ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-27 18:15:58 | 483ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-24 12:58:57 | 8940ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-21 10:39:05 | 13231ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-08 04:46:08 | 1194ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-07-13 03:14:47 | 943ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-07-06 10:31:47 | 1549ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-07-02 00:00:00 | 881ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-17 09:48:17 | 501ms | 2 NS 2 A 0 MX | 🔒 Secure |