keystoneaudio.dk is a .dk domain served by 2 nameservers (anderson.ns.cloudflare.com, beth.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.49.249 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx.simply.com. The zone is not DNSSEC-signed, 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 104.21.49.249 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.154.125 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mx.simply.com | 94.231.106.20 | mx.simply.com | AS48854 team.blue Denmark A/S |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3034::6815:31f9 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::ac43:9a7d | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.49.249,172.67.154.125 ech=AEX+DQBBWgAgACADWERuTv0JgxsfedxaF1CAoF1PJhPs12yR2S11iupbTAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:31f9,2606:4700:3037::ac43:9a7d |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve keystoneaudio.dk: 104.21.49.249 172.67.154.125 2606:4700:3034::6815:31f9 2606:4700:3037::ac43:9a7d (AS13335) (all like this)www.keystoneaudio.dk: no address |
| Wildcard | No |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | A9D603AF4D7ED6B9246B4B68500CD6F2… |
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | 97A3BA009F39C761BFFB6574340E8138… |
| 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 | 2414863061 |
| Primary NS (MNAME) | anderson.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 01:44:11 | 2341ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-26 09:38:40 shown | 1157ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-17 23:42:41 | 723ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-14 10:02:33 | 589ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-01 08:53:39 | 9542ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-28 15:52:47 | 1066ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-26 12:53:13 | 1131ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-21 07:45:01 | 8127ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-18 04:37:54 | 1536ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-16 21:22:35 | 3894ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-16 03:28:34 | 8867ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-03 07:50:03 | 10008ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-27 11:21:34 | 927ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-22 15:36:24 | 2586ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-21 04:58:04 | 1141ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 23:40:03 | 848ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-18 06:12:08 | 991ms | 2 NS 2 A 1 MX | 🔓 Insecure |