rkusw.dk is a .dk domain served by 2 nameservers (brad.ns.cloudflare.com, gail.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.24.139 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by work-mx.app.hey.com. The zone is not DNSSEC-signed, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 104.21.24.139 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.218.248 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | work-mx.app.hey.com | 64.202.125.68 | work-mx.app.hey.com | AS25657 Basecamp, LLC |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::6815:188b | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3033::ac43:daf8 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.24.139,172.67.218.248 ech=AEX+DQBB1AAgACBhIWtxhsWhsdsRTzblb1SUpomuc4F6IkUqkGp9fFBhfwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:188b,2606:4700:3033::ac43:daf8 |
| TXT Record |
|---|
| hey-verification:6ds7ZCCqg85tr4x5F1dZ67m9 |
| v=spf1 include:_spf.hey.com ~all |
| Policy | Record (rkusw.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.hey.com ~all |
| Policy | Record (_dmarc.rkusw.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; pct=100; rua=mailto:re+fiz01x6cwjx@dmarc.postmarkapp.com; sp=none; aspf=r; |
| www | 104.21.24.139 172.67.218.248 2606:4700:3032::6815:188b 2606:4700:3033::ac43:daf8 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
DNS lookups: 1/10 · policy: ~all
No problems found| 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 | 2413531348 |
| Primary NS (MNAME) | brad.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-08 07:03:53 shown | 606ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-25 20:58:33 | 9542ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-31 03:05:41 | 1101ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-29 00:28:28 | 749ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-20 09:23:02 | 1876ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 23:13:37 | 966ms | 4 NS 1 A 1 MX | 🔓 Insecure |