Network Tools
Network Tools
A privacy-first network toolkit — check your public IP and latency, calculate IPv4 subnets and CIDR ranges, look up the vendor behind any MAC address from the full IEEE registry, and parse any URL into its components. Everything runs in your browser with no install.
What Is My IP & Network Tester
Your public IP, location, ISP, AS number and connection profile.
Subnet Calculator
Calculate network, broadcast, host range and split any CIDR block.
MAC Address Analyzer
Identify the vendor and decode any MAC address — OUI, cast and UAA/LAA.
URL Parser & Query Inspector
Break any URL into its parts and inspect every query parameter.
Network Protocol Simulator
Watch a DNS lookup, a TCP handshake, a TLS handshake and a page load, packet by packet.
Which network tool?
One line each: the situation the tool is the answer to.
| Tool | Best when |
|---|---|
| What Is My IP & Network Tester | Your public address, where it appears to be, and who routes it. |
| Subnet Calculator | A CIDR block and you need its range, mask, or to split it up. |
| MAC Address Analyzer | A MAC address and you want the vendor and its flags. |
| URL Parser & Query Inspector | A URL taken apart: host, path, every query parameter. |
| Network Protocol Simulator | Nothing is broken — you want to see how a lookup, a handshake or a page load actually goes. |
About these network tools
Networking tools divide into two kinds, and the split is worth knowing. Subnet arithmetic, MAC decoding and URL parsing are pure computation — they run entirely on your device and work offline. Checking your public IP is the one task that inherently needs the network, because only an outside observer can tell you what address the internet sees; that request is made from your own browser session, so the answer reflects your actual connection rather than a server's guess.
The details these tools handle correctly are the ones that bite in practice: a subnet's first and last addresses are unassignable, a missing MAC vendor usually means modern privacy randomisation rather than a failed lookup, and the fragment of a URL never reaches any server — which explains a whole category of missing-parameter mysteries. Each page explains its own trap rather than leaving it to folklore.