smartskill.dk is a .dk domain served by 4 nameservers (dns1.vismadns.com, dns2.vismadns.com, dns3.vismadns.com and 1 more). It was registered on 22 October 2014 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 91.123.56.171 is hosted by Visma Software International AS (AS61213) in Norway. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 91.123.56.171 | 3600s | — | AS61213 | Visma Software International AS | 91.123.56.0/23 | 🇳🇴 Norway | — |
| www CNAME | visma.com (all on visma.com) |
| www vs bare domain | Different networks smartskill.dk: 91.123.56.171 (AS61213) (all like this)www.smartskill.dk: 104.18.38.149 172.64.149.107 2606:4700:4400::6812:2695 2606:4700:440b::ac40:956b (AS13335) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2413818269 |
| Primary NS (MNAME) | dns1.vismadns.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 | 2014-10-22 |
| Expires | 2026-10-31 (14d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 22:15:56 | 573ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-27 07:38:49 | 522ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-24 07:04:11 | 1036ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-06 08:14:52 | 1005ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-05 14:06:20 shown | 848ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-10 02:30:49 | 3324ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-16 14:06:04 | 751ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-27 00:53:31 | 1152ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-17 21:28:34 | 567ms | 4 NS 1 A 0 MX | 🔒 Secure |