| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| dns1.shell.com | 134.146.80.20 | dns1.shell.com | AS3917 Shell Information Technology International B.V. |
| dns2.shell.com | 144.199.196.20 | dns2.shell.com | AS3918 Shell Information Technology International B.V. |
| dns3.shell.com | — | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 28800s | mail.shellgas.dk | 195.190.146.81 | — | AS60781 LeaseWeb Netherlands B.V. |
| TXT Record |
|---|
| v=DMARC1; p=quarantine; sp=reject; fo=1; pct=100; ruf=mailto:SITI-Cyberdefence-DMARC-Analysis@shell.com; rua=mailto:SITI-Cyberdefence-DMARC-Analysis@shell.com |
| v=DMARC1;p=quarantine;sp=reject;fo=1;pct=100;ruf=mailto:SITI-Cyberdefence-DMARC-Analysis@shell.com;rua=mailto:SITI-Cyberdefence-DMARC-Analysis@shell.com |
| v=spf1 -all |
| Policy | Record (shellgas.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 3559 |
| Primary NS (MNAME) | dns1.shell.com |
| Responsible (RNAME) | dns@shell.com |
| Refresh | 10800s |
| Retry | 1080s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 600s |