| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns1.c-system.dk | 49.12.60.90 | ns1.c-system.dk | AS24940 Hetzner Online GmbH |
| ns2.c-system.dk | 49.12.60.94 | ns2.c-system.dk | AS24940 Hetzner Online GmbH |
| ns3.c-system.dk | 130.162.220.97 | — | AS31898 Oracle Corporation |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 49.12.60.85 | 38400s | web03.c-system.dk | AS24940 | Hetzner Online GmbH | 49.12.0.0/15 | 🇩🇪 Germany | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.8 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| v=spf1 a mx a:mailgw1.c-system.dk a:web03.c-system.dk -all |
| Policy | Record (vabø.dk) |
|---|---|
| -all (hard fail) | v=spf1 a mx a:mailgw1.c-system.dk a:web03.c-system.dk -all |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 1611170753 |
| Primary NS (MNAME) | ns1.c-system.dk |
| Responsible (RNAME) | hostmaster@c-system.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 38400s |
| Scanned At | Duration | Records | DNSSEC | |
|---|---|---|---|---|
| 2026-09-02 03:49:23 | 9500ms | 3 NS 1 A 0 MX | 🔓 Insecure | View |
| 2026-06-28 14:16:07 | 671ms | 3 NS 1 A 0 MX | 🔓 Insecure | View |
| 2026-06-24 09:30:27 | 2439ms | 3 NS 1 A 0 MX | ❓ Unknown | View |
| 2026-06-23 02:43:36 | 1105ms | 0 NS 0 A 0 MX | ❓ Unknown | View |
| 2026-06-19 22:49:53 | 4395ms | 3 NS 1 A 0 MX | 🔒 Secure | View |
| 2026-06-17 13:56:50 | 1321ms | 3 NS 1 A 0 MX | 🔒 Secure | View |