NetScope — Network & Web Tools

Subnets, status codes, URLs and campaign links — instant, private, free.

100% client-side Free forever No sign-up

Runs 100% in your browser — nothing is ever uploaded.

All NetScope tools

CIDR Full subnet breakdown from any CIDR notation. HTTP codes What every status code means — and how to fix it. URL parser See and edit every component of a URL. UTM Tag marketing links correctly — every parameter explained.

Are these network tools free?

Yes — every NetScope tool is 100% free with no signup, no limits and no ads walls.

Is my data uploaded anywhere?

No. All calculations (CIDR math, URL parsing, UTM building) run entirely in your browser. Nothing ever leaves your device.

Do these tools work offline?

Yes — once the page is loaded, the calculators work without an internet connection.