IP Calculator
Type an address and watch every bit fall into network or host.
Try
32-bit breakdown
Network bitsHost bits
How it's calculated
Try
128-bit breakdown, by hextet
Prefix bitsInterface / host bits
Practice Quiz
Network engineering prep built on live math: every question is generated the moment you start, and questions you've already seen are skipped.
Topics
Length
Pick at least one topic to build a quiz.
Keyboard: press 1โ4 or AโD to answer, F to flag, Enter for the next question. Switching tabs mid-quiz keeps your place.
Flagged Questions
Questions you flagged, plus every question you missed. Answer a missed question correctly to clear it.
My Progress
Saved on this device only.