networking tools

CIDR Calculator

Calculate network address, broadcast address, usable host range, and subnet mask from a CIDR block.

DNS Lookup

Query any DNS record type - A, AAAA, MX, TXT, NS, CNAME, SOA, or CAA - for a domain.

NSLookup

Resolve a hostname to its IP addresses (A/AAAA), or look up the hostname for an IP address (reverse DNS).

Ping

Check whether a host is reachable and measure round-trip latency.

WHOIS Lookup

Look up domain registration details - registrar, creation/expiry dates, and nameservers.