Busca Registro SOA
Verifique registros SOA para configuração de zona DNS.
Como Usar Esta Ferramenta
- O Que Inserir
- Enter a domain to check its SOA (Start of Authority) record and DNS zone configuration parameters.
- O Que Você Obtém
- Displays primary nameserver (MNAME), responsible person email (RNAME), zone serial number, refresh interval, retry interval, expire time, and minimum TTL (negative caching).
Como Interpretar os Resultados
The serial number should increment with every zone change — stale serials indicate replication issues. Refresh interval (typically 3600-86400s) controls how often secondary servers check for updates. The expire value determines when secondaries stop serving stale data if they cannot reach the primary.
Problemas Comuns e Soluções
Serial number not incrementing after changes prevents zone transfers to secondaries. Very low refresh values cause excessive traffic. RNAME field often contains an invalid or generic email. Expire time too short may cause outages during primary server maintenance.