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Network Diagnostics

DNS lookups, WHOIS, and TCP port checks, run live from this server against the host you specify — not a cached third-party scan.

Domain

Record type

Domain

Host

Ports (comma-separated, up to 15)

Common: 21 FTP, 22 SSH, 25 SMTP, 80/443 HTTP(S), 3306 MySQL, 3389 RDP, 5432 PostgreSQL, 6379 Redis.

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