sejlrens.dk is a .dk domain served by 2 nameservers (terin.ns.cloudflare.com, vida.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.37.224 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by lyra.webstream.dk. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.37.224 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.213.236 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | lyra.webstream.dk | — | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::6815:25e0 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3031::ac43:d5ec | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.37.224,172.67.213.236 ech=AEX+DQBB3AAgACAoZRjyphsVg7R/pv8PpZ03DLx+gLGtM2atVhv4Ia3EPQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:25e0,2606:4700:3031::ac43:d5ec |
| TXT Record |
|---|
| google-site-verification=aIthxjzOErGb4X3sx6d9-JgSLfnJC5UT6R_99wPZctk |
| Hosted by Webstream ApS - http://webstream.dk |
| www | 104.21.37.224 172.67.213.236 2606:4700:3031::6815:25e0 2606:4700:3031::ac43:d5ec (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network sejlrens.dk: 104.21.37.224 172.67.213.236 2606:4700:3031::6815:25e0 2606:4700:3031::ac43:d5ec (AS13335) www.sejlrens.dk: 104.21.37.224 172.67.213.236 2606:4700:3031::6815:25e0 2606:4700:3031::ac43:d5ec (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 | 2414249021 |
| Primary NS (MNAME) | terin.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-25 10:45:02 shown | 4562ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-11 04:04:13 | 2162ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-03 23:57:03 | 487ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-01 03:52:20 | 785ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-27 21:21:51 | 769ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-26 19:11:21 | 859ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-06 09:11:54 | 923ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-24 17:50:00 | 1465ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 14:45:29 | 1951ms | 2 NS 2 A 1 MX | 🔓 Insecure |