cleansys.dk is a .dk domain served by 4 nameservers (dns1.zipmedia.dk, dns2.zipmedia.dk, dns5.zipmedia.dk and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.51.76.151 is hosted by Din Server Group ApS (AS215052) in Denmark. Mail is handled by mail1.zipmedia.dk. The zone is DNSSEC-signed and validates, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 185.51.76.151 | 3600s | — | AS215052 | Din Server Group ApS | 185.51.76.0/24 | 🇩🇰 Denmark | Albertslund |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mail1.zipmedia.dk | 185.51.76.142 2a12:bec4:11d3:81fc::1 |
mail1.zipmedia.dk mail1.zipmedia.dk |
AS215052 Din Server Group ApS AS215052 Din Server Group ApS |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 185.51.76.151 |
| 🔶 Autoconfig | 185.51.76.151 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a12:bec4:11d3:3068:185:51:76:151 | 3600s | — | AS215052 | Din Server Group ApS | 2a12:bec4:11d0:0:0:0:0:0/46 | 🇩🇰 Denmark | Albertslund |
| TXT Record |
|---|
| v=spf1 ip4:185.51.76.142 a mx -all |
| Policy | Record (cleansys.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:185.51.76.142 a mx -all |
| Policy | Record (_dmarc.cleansys.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; adkim=s; aspf=s; rua=mailto:postmaster@zipmedia.dk; |
| Flags | Tag | Value |
|---|---|---|
| 128 | issue | letsencrypt.org |
| www | 185.51.76.151 2a12:bec4:11d3:3068:185:51:76:151 (AS215052) (address records, no CNAME) |
| www vs bare domain | Same network cleansys.dk: 185.51.76.151 2a12:bec4:11d3:3068:185:51:76:151 (AS215052) www.cleansys.dk: 185.51.76.151 2a12:bec4:11d3:3068:185:51:76:151 (AS215052) |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC3 · 0 iterations · no salt · opt-out RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| dkim | — | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 2/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026072102 |
| Primary NS (MNAME) | dns1.zipmedia.dk |
| Responsible (RNAME) | support@zipmedia.dk |
| Refresh | 7200s |
| Retry | 180s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 60s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-10 00:29:37 | 4597ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-20 20:53:48 | 4993ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-31 08:33:22 | 4692ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 19:01:24 | 895ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-11 07:15:48 | 2817ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-22 02:26:19 shown | 976ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-03 15:15:28 | 17404ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-27 01:23:01 | 8852ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 21:16:23 | 653ms | 4 NS 1 A 1 MX | 🔒 Secure |