cerovsky.dk is a .dk domain served by 3 nameservers (ns5.chosting.dk, ns6.chosting.dk, ns7.chosting.dk). It was registered on 18 September 2026 (WHOIS) and first appeared in the .dk zone on 19 September 2026. Its website address 178.20.216.40 is hosted by Atea A/S (AS21060) in Denmark. Mail is handled by mail.protonmail.ch, mailsec.protonmail.ch and 1 more. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. 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 |
|---|---|---|---|---|---|---|---|
| 178.20.216.40 | 14400s | webadm.fioniait.dk | AS21060 | Atea A/S | 178.20.216.0/23 | 🇩🇰 Denmark | — |
| TXT Record |
|---|
| protonmail-verification=1befb543c64524370fb8ce28f3d565a4b6d0db94 |
| v=spf1 include:_spf.protonmail.ch ~all |
| Policy | Record (cerovsky.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.protonmail.ch ~all |
| Policy | Record (_dmarc.cerovsky.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine |
| www CNAME | cerovsky.dk (all on cerovsky.dk) → 178.20.216.40 (AS21060) |
| www vs bare domain | Same network |
| Wildcard | No |
DNS lookups: 2/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 76BB66711DA416433CA890A5B2E5A053… |
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| SMTP _25._tcp.mailsec.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| SMTP _25._tcp.mailsec.protonmail.ch | DANE-EE · SPKI · SHA-256 | 76BB66711DA416433CA890A5B2E5A053… |
| 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 | 2026091913 |
| Primary NS (MNAME) | ns5.chosting.dk |
| Responsible (RNAME) | notification@fioniait.dk |
| Refresh | 3600s |
| Retry | 1800s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | FIONIA IT ApS |
| Registered | 2026-09-18 |
| Expires | 2027-09-17 (334d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-17 03:19:37 | 1782ms | 3 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-16 02:33:16 shown | 941ms | 3 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-06 15:34:04 | 2571ms | 3 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-05 13:31:36 | 904ms | 3 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-01 13:10:40 | 1369ms | 3 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-30 13:05:36 | 763ms | 3 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-28 05:12:03 | 2101ms | 3 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-27 04:39:57 | 1702ms | 3 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-26 04:29:22 | 812ms | 3 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-25 04:23:55 | 761ms | 3 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-21 19:50:29 | 1331ms | 3 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-19 11:36:40 | 832ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-19 10:28:24 | 1106ms | 3 NS 1 A 1 MX | 🔓 Insecure |