THE EVERYDAY NETWORK WORKBENCH

Less guesswork.
More useful answers.

Eight focused tools for addresses, subnets, DNS and transfer estimates. Clear results, with the context to use them well.

YOUR CONNECTION IP216.73.216.10

The source address seen by this service—not a detected LAN subnet or a verified identity.

CHOOSE / CALCULATE / UNDERSTAND

Subnet calculator

Runs in your browser

Calculate IPv4 and IPv6 networks, address counts, subnet masks and address ranges from CIDR notation.

Choose a tool and enter a value to see its result.

60 Requests / Minute / IPPages, assets and endpoints share the server allowance. Local calculations do not make a lookup request.
30 DNS Lookup Units / Minute / IPA single lookup uses one unit; a two-resolver comparison uses two.
CLI / API Guide →

RESULTS WITH BOUNDARIES

Useful Tools. Clear Limits.

A valid address is not a reachable device.

Address math describes a range. It does not check routing, ownership, firewall access or whether a host is online.

Two resolvers are not the whole internet.

DNS lookups run from our server. Resolver timing is not your device’s latency, and different answers may be intentional.

Your prefix is yours to supply.

IP examples start with your connection address and an illustrative /24 or /64. Replace that prefix with the actual network allocation.

Read the Field Guide →

TERMINAL FRIENDLY

Your Public IP. One Command.

No banner, markup or extra fields. Just the source IP seen by the service, followed by one newline.

Terminal
curl iptoolbox.info

The bare command uses HTTP. For encryption use https://iptoolbox.info. The /ip path always returns plain text.

curl, PowerShell and JSON Examples →

BUILD YOUR WORKING KNOWLEDGE

From an Answer to Understanding.

KEEP EXPLORING

Useful Internet Tools

A little curiosity goes a long way. Find your next useful tool or plain-English guide.

13 more places to explore

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