arsystems.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.41.202 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by arsystems-dk.mail.protection.outlook.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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns1.curanet.dk | — | — | — |
| ns2.curanet.dk | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 185.21.41.202 | — | vm0521.enterprisecloud.nu | AS48854 | team.blue Denmark A/S | 185.21.40.0/22 | 🇩🇰 Denmark | — |
| TXT Record |
|---|
| google-site-verification=s8_Bf3IgbAZZzvjvn7MSJGyvVaVI4KQEdRpOIT_dI0I |
| MS=ms33792177 |
| v=spf1 ip4:116.202.162.225 mx ip4:217.195.178.0/24 include:spf.curanet.dk include:spf.protection.outlook.com include:HE1PR05CA0243.eurprd05.prod.outlook.com -all |
| Policy | Record (arsystems.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:116.202.162.225 mx ip4:217.195.178.0/24 include:spf.curanet.dk include:spf.protection.outlook.com include:HE1PR05CA0243.eurprd05.prod.outlook.com -all |
| www | 185.21.41.202 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 6/10 · policy: -all
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2025061801 |
| Primary NS (MNAME) | ns1.curanet.dk |
| Responsible (RNAME) | hostmaster@curanet.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-08-27 17:25:49 | 1204ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 01:40:49 | 933ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-22 23:15:07 | 1181ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-22 10:01:13 | 2254ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-22 09:00:19 | 1003ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-22 05:38:22 | 1183ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 04:32:44 | 2455ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 13:41:14 shown | 656ms | 2 NS 1 A 1 MX | 🔒 Secure |