frederikssundswim.dk is a .dk domain served by 2 nameservers (duke.ns.cloudflare.com, kiki.ns.cloudflare.com). It was registered on 7 May 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.54.118 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by frederikssundswim-dk.mail.protection.outlook.com. The zone is DNSSEC-signed but currently fails validation, 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| duke.ns.cloudflare.com | — | — | — |
| kiki.ns.cloudflare.com | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 104.21.54.118 | — | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.138.122 | — | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::ac43:8a7a | — | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3034::6815:3676 | — | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.54.118,172.67.138.122 ech=AEX+DQBBBwAgACCqfmcfnIuoKJ5IlEf/fctMxRpLGzhWDr4T3BFQFMHreQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:8a7a,2606:4700:3034::6815:3676 |
| TXT Record |
|---|
| MS=ms21760584 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (frederikssundswim.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| www | 104.21.54.118 172.67.138.122 2606:4700:3031::6815:3676 2606:4700:3037::ac43:8a7a (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network frederikssundswim.dk: 104.21.54.118 172.67.138.122 2606:4700:3031::6815:3676 2606:4700:3037::ac43:8a7a (AS13335) www.frederikssundswim.dk: 104.21.54.118 172.67.138.122 2606:4700:3031::6815:3676 2606:4700:3037::ac43:8a7a (AS13335) |
| Wildcard | Yes: any name under the zone resolves |
DNS lookups: 1/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | ⚠️ Bogus |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | broken trust chain resolving 'frederikssundswim.dk/A/IN': 127.0.0.1#53 |
| Field | Value |
|---|---|
| Serial | 2402938492 |
| Primary NS (MNAME) | duke.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 | 2009-05-07 |
| Expires | 2027-05-31 (218d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-25 03:54:39 | 1614ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-09 02:14:44 | 1596ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-19 10:47:22 | 1502ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-07 13:53:26 | 3144ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-28 00:18:06 | 1643ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-24 16:26:40 | 1181ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-09 14:39:30 | 3910ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-02 19:03:28 | 10293ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-26 14:49:42 | 1568ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-24 17:39:48 | 1227ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-18 16:17:31 | 1950ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 09:49:09 shown | 1907ms | 2 NS 2 A 1 MX | ⚠️ Bogus |