maskup.dk is a .dk domain served by 2 nameservers (luke.ns.cloudflare.com, serenity.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.91.129 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by route1.mx.cloudflare.net, route3.mx.cloudflare.net and 1 more. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.91.129 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.219.204 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::6815:5b81 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3032::ac43:dbcc | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.91.129,172.67.219.204 ech=AEX+DQBBNwAgACC3MLfW97G7aLujLZqxuYE5P3+C1bidD66oHZNZL8SSLQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:5b81,2606:4700:3032::ac43:dbcc |
| TXT Record |
|---|
| v=spf1 include:_spf.mx.cloudflare.net ~all |
| Policy | Record (maskup.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.mx.cloudflare.net ~all |
| www | 104.21.91.129 172.67.219.204 2606:4700:3032::6815:5b81 2606:4700:3032::ac43:dbcc (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network maskup.dk: 104.21.91.129 172.67.219.204 2a06:98c1:3120::1 2a06:98c1:3121::1 (AS13335) www.maskup.dk: 104.21.91.129 172.67.219.204 2606:4700:3032::6815:5b81 2606:4700:3032::ac43:dbcc (AS13335) |
| Wildcard | No |
DNS lookups: 1/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.route1.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| SMTP _25._tcp.route1.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| SMTP _25._tcp.route1.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| SMTP _25._tcp.route2.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| SMTP _25._tcp.route2.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| SMTP _25._tcp.route2.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| SMTP _25._tcp.route3.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| SMTP _25._tcp.route3.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| SMTP _25._tcp.route3.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| 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 | 2415769336 |
| Primary NS (MNAME) | luke.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 04:37:58 shown | 839ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-25 19:58:53 | 1209ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-23 19:23:36 | 1284ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-19 09:57:52 | 1008ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-16 16:33:30 | 1461ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-06 01:48:17 | 2079ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-07-19 23:46:50 | 1759ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-06-30 00:38:00 | 1105ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-06-26 01:46:54 | 2841ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-06-23 11:38:08 | 1114ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-06-20 16:28:21 | 2172ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-06-17 20:42:34 | 1087ms | 2 NS 2 A 3 MX | 🔓 Insecure |