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8 tools
Common Network Port Reference
Look up common service port numbers and transport protocols.
DNS Record Lookup
Query public DNS records through Cloudflare’s DNS-over-HTTPS service.
HTTP Status Code Lookup
Search a short reference of common HTTP response status codes.
IP & Browser Connection Inspector
Inspect available browser connection information and optionally look up your public IP.
IPv4 Subnet Calculator
Calculate network, mask, broadcast and host range from an IPv4 address and CIDR prefix.
MAC Address Formatter
Validate and format a 48-bit MAC address.
Network Latency Simulator
Generate labelled latency samples from a base value and maximum jitter.
User-Agent String Parser
Identify common browser and operating-system hints in a user-agent string.