knass21.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 90.185.145.235 is hosted by Hiper A/S (AS203953) in Denmark. Mail is handled by .. The zone is DNSSEC-signed and validates, 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 |
|---|---|---|---|---|---|---|---|
| 90.185.145.235 | 600s | x5ab991eb.customers.hiper-net.dk | AS203953 | Hiper A/S | 90.184.0.0/15 | 🇩🇰 Denmark | Fredericia |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | . Null MX — domain accepts no email (RFC 7505) | |||
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | knass21.dk → 90.185.145.235 |
| 🔶 Autoconfig | knass21.dk → 90.185.145.235 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a05:f6c5:195c:0:759c:7094:4db4:437 | 600s | — | AS203953 | Hiper A/S | 2a05:f6c0:0:0:0:0:0:0/29 | 🇩🇰 Denmark | Fredericia |
| www | 46.30.211.38 (AS51468) (address records, no CNAME) |
| www vs bare domain | Different networks knass21.dk: 90.185.145.235 2a05:f6c5:195c:0:759c:7094:4db4:437 (AS203953) (all like this)www.knass21.dk: 46.30.211.38 (AS51468) |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.knass21.dk | knass21.dk |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026091601 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 14:40:07 shown | 830ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-20 03:30:05 | 1629ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 01:19:58 | 740ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-18 00:57:20 | 2658ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-17 21:40:07 | 4800ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 11:25:01 | 609ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 11:45:03 | 4145ms | 2 NS 1 A 0 MX | 🔒 Secure |