Free subnetting practice for anyone learning networking
Randomized IPv4 subnetting and IP addressing questions with instant feedback, step-by-step solutions and an AI tutor that explains any step. For students, IT pros and self-learners, including CCNA candidates.
- Free · no account · no ads
- Instant feedback + AI tutor
- Exam mode & stats
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Why Subnet Trainer?
- Learn beyond the answerHighlight any confusing step and ask the AI tutor to simplify it or go deeper.
- Practice without interruptionsInstant feedback, at your own pace.
- Track your progressThe Stats tab shows where to improve.
- Hear from learners
- Free, no account, no adsJust open it and practice.
Timed exam mode
Random mix of question types. No solutions (or AI tutor) until the end. Each question is graded all-or-nothing.