fysikklubben.dk is a .dk domain served by 2 nameservers (bowen.ns.cloudflare.com, ryleigh.ns.cloudflare.com). It was registered on 5 July 2026 (WHOIS) and first appeared in the .dk zone on 6 July 2026. Its website address 104.21.23.75 is hosted by Cloudflare, Inc. (AS13335). 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 |
|---|---|---|---|---|---|---|---|
| 104.21.23.75 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.209.201 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3035::ac43:d1c9 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3036::6815:174b | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.23.75,172.67.209.201 ech=AEX+DQBB8gAgACCIZ8uQXidaAaC48rHXa9UK3cXHkpyHTn9GHoptCod4GAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::ac43:d1c9,2606:4700:3036::6815:174b |
| www | 104.21.23.75 172.67.209.201 2606:4700:3035::ac43:d1c9 2606:4700:3036::6815:174b (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network fysikklubben.dk: 104.21.23.75 172.67.209.201 2606:4700:3035::ac43:d1c9 2606:4700:3036::6815:174b (AS13335) www.fysikklubben.dk: 104.21.23.75 172.67.209.201 2606:4700:3035::ac43:d1c9 2606:4700:3036::6815:174b (AS13335) |
| Wildcard | No |
| 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 | 2414064293 |
| Primary NS (MNAME) | bowen.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 2026-07-05 |
| Expires | 2027-07-04 (260d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 10:17:05 shown | 2129ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-10-03 03:09:50 | 591ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-30 08:24:27 | 416ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-11 22:08:34 | 1127ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-04 21:12:34 | 1432ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-06 08:41:52 | 3965ms | 2 NS 2 A 0 MX | 🔓 Insecure |