retest-security.dk is a .dk domain served by 2 nameservers (hank.ns.cloudflare.com, sandy.ns.cloudflare.com). It was registered on 1 April 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.12.168 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by route2.mx.cloudflare.net, route1.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 |
|---|---|---|---|---|---|---|---|
| 104.21.12.168 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.152.209 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3033::6815:ca8 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::ac43:98d1 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.12.168,172.67.152.209 ech=AEX+DQBBwgAgACDZO1T5WuN7UdX7qB2n+oS+FlwBLdwX7XoZ18CbfwPkdgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:ca8,2606:4700:3037::ac43:98d1 |
| TXT Record |
|---|
| v=spf1 include:_spf.mx.cloudflare.net ~all |
| Policy | Record (retest-security.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.mx.cloudflare.net ~all |
| www | 104.21.12.168 172.67.152.209 2606:4700:3033::6815:ca8 2606:4700:3037::ac43:98d1 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network retest-security.dk: 104.21.12.168 172.67.152.209 2606:4700:3033::6815:ca8 2606:4700:3037::ac43:98d1 (AS13335) www.retest-security.dk: 104.21.12.168 172.67.152.209 2606:4700:3033::6815:ca8 2606:4700:3037::ac43:98d1 (AS13335) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Delete signal: the zone asks the registry to remove its DS (go insecure) 1 CDS, 1 CDNSKEY |
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-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| SMTP _25._tcp.route2.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| SMTP _25._tcp.route2.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| 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… |
| SMTP _25._tcp.route3.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2416598487 |
| Primary NS (MNAME) | hank.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2019-04-01 |
| Expires | 2027-04-30 (188d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-05 08:35:49 shown | 3206ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-10-03 08:14:19 | 1294ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-10-02 08:11:28 | 3038ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-10-01 07:54:58 | 1219ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-28 06:24:56 | 2709ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-27 13:58:38 | 1061ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-26 13:45:31 | 1118ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-24 13:24:50 | 1109ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-23 12:53:35 | 1123ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-08 08:01:19 | 1992ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-30 11:35:50 | 2352ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-28 23:07:41 | 1858ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-24 10:46:23 | 1813ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-20 18:46:22 | 8510ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-14 23:56:46 | 1804ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-07-20 22:40:19 | 1909ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-07-11 00:20:50 | 2986ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-07-01 04:26:46 | 961ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-06-23 13:04:49 | 3322ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-06-21 16:53:04 | 1167ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 14:39:00 | 4804ms | 2 NS 2 A 3 MX | 🔓 Insecure |