buildingos.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It first appeared in the .dk zone on 30 June 2026. Its website address 216.198.79.1 is hosted by Amazon.com, Inc. (AS16509) in United States. Mail is handled by .. 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 |
|---|---|---|---|---|---|---|---|
| 216.198.79.1 | 600s | — | AS16509 | Amazon.com, Inc. | 216.198.79.0/24 | 🇺🇸 United States | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | . Null MX — domain accepts no email (RFC 7505) | |||
| www | 104.21.30.92 172.67.172.179 2606:4700:3033::ac43:acb3 2606:4700:3037::6815:1e5c (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network buildingos.dk: 104.21.30.92 172.67.172.179 2606:4700:3033::ac43:acb3 2606:4700:3037::6815:1e5c (AS13335) www.buildingos.dk: 104.21.30.92 172.67.172.179 2606:4700:3033::ac43:acb3 2606:4700:3037::6815:1e5c (AS13335) |
| Wildcard | No |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026070101 |
| 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 11:44:39 | 514ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-18 22:46:18 | 655ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-14 09:16:57 | 706ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-10 02:55:17 | 720ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-25 11:15:48 | 1058ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-15 18:48:24 | 1064ms | 2 NS 2 A 1 MX | ❓ Unknown |
| 2026-07-08 14:06:13 | 636ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-01 20:42:27 shown | 2171ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-01 09:22:18 | 8813ms | 2 NS 1 A 1 MX | 🔓 Insecure |