Menu

Information

Updated version of the classic Subnetting Practice question generator by Practical Networking.

Feedback? Mention it on my Discord server: pracnet.net/discord.

Instructions:

Each time you click "Next Problem" (or reload the page) a random IP address and CIDR value is generated.

You are then tasked to solve the Network ID, Broadcast IP, First Host IP, Last Host IP, and Next Network addresses for the target IP.

Options:

  • Auto‑fill non‑interesting octets pre-fills the octets that aren’t part of the subnet calculation. For example: with a /24, the first three octets are filled in each answer row.
  • Auto‑check automatically checks a row once all four octets are entered.

Psa Interface Checker V3 Download [upd] Jun 2026

For hobbyists: proceed with caution. Always scan downloaded files with VirusTotal. A clean copy of the Checker should trigger no more than 2/60 heuristic detections (usually false positives related to driver access).

Before we discuss the process, a critical warning: Because this tool modifies system-level drivers and performs memory patches, many antivirus programs (especially Windows Defender) will flag it as a "HackTool" or "Keygen." Psa Interface Checker V3 Download

: When using this tool with "clone" interfaces, it is strongly advised to disconnect the internet to prevent the hardware from being blacklisted by official servers during the update process. For hobbyists: proceed with caution