devzero.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 4 May 2005 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mx01.kolabnow.com, mx02.kolabnow.com. The zone is DNSSEC-signed and validates, has no 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.
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | home.devzero.dk → 5.186.123.243 |
| 🔶 Autoconfig | home.devzero.dk → 5.186.123.243 |
| TXT Record |
|---|
| v=spf1 mx mx:mykolab.com mx:kolabnow.com -all |
| Policy | Record (devzero.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx mx:mykolab.com mx:kolabnow.com -all |
| www CNAME | d10vx8pcmaf65k.cloudfront.net (all on cloudfront.net) |
| www vs bare domain | Only www resolves (all like this) |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 3/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.devzero.dk | home.devzero.dk |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx01.kolabnow.com | DANE-EE · Full cert · SHA-256 | 41B01929AFEBCF769577C1B3B9D41F0B… |
| SMTP _25._tcp.mx01.kolabnow.com | DANE-EE · Full cert · SHA-256 | C48641B0A3AA38C42B6C5BFD42A25D63… |
| SMTP _25._tcp.mx02.kolabnow.com | DANE-EE · Full cert · SHA-256 | C48641B0A3AA38C42B6C5BFD42A25D63… |
| SMTP _25._tcp.mx02.kolabnow.com | DANE-EE · Full cert · SHA-256 | 41B01929AFEBCF769577C1B3B9D41F0B… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026081001 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 2005-05-04 |
| Expires | 2027-05-31 (225d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-11 06:22:13 | 1549ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-10 20:22:14 | 2564ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-01 14:58:23 shown | 2135ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-28 10:20:16 | 1046ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-26 18:10:21 | 2033ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-11 01:43:10 | 4878ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-07-15 17:39:20 | 1969ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-07-11 06:02:08 | 2307ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-06-17 02:38:57 | 3270ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-06-17 02:31:05 | 1120ms | 2 NS 0 A 2 MX | 🔒 Secure |