8 tools

Network tools

Network engineering tools: subnet calculators, IP address conversion, DNS and WHOIS lookups.

Search by name, task or keyword.

8 results

IPv4 CIDR → network, broadcast, hosts, wildcard.

IPv4 dotted ↔ integer ↔ binary ↔ hex.

Size, speed, and time.

IPv6 CIDR → network, first/last, address count.

Resolve A / AAAA / MX / TXT / CNAME / NS.

Domain registration summary via RDAP.

Inspect TLS cert subject, issuer, expiry, SANs.

Fetch response status and headers for a URL.