Click the "Select File" button above, and choose your P2B file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert P2B to another file type
To convert your P2B file to another format, you need PeerBlock or other System software.
Convert a file to P2B
To convert other file formats to the "IP Blocklist" file type, you need software like PeerBlock or a similar tool.
About P2B files
A .p2b file is a binary IP blocklist created by PeerBlock or its predecessor, PeerGuardian. Unlike standard text lists, the .p2b format compiles IP ranges into a proprietary binary structure to reduce file size and improve load times for older hardware. Users typically encounter these files when trying to migrate legacy firewall rules to modern security tools (like simplewall or router blacklists) or when auditing "bad IP" lists for false positives. Because it is a binary blob, you cannot open it in Notepad or Excel. To make the data usable, you must convert it to a plain text format (often with a p2p or txt extension) using the original PeerBlock List Manager or a dedicated parsing script.
Convert.Guru analyzes your P2B file, detects the exact format, and lets you read the text inside.
If you want to convert P2B file to MP3, WAV, AAC, FLAC, OGG, WMA, M4A, AIFF, OPUS, ALAC, APE or WV, you can use PeerBlock or similar software from the "Peer-to-peer IP blocklist" category. In the File menu, look for Save As… or Export….
To convert MIDI, AAC, TTA, AU, WV, DTS, MID, FLAC, RA, MP3, PCM or WAV files to P2B, try PeerBlock or another comparable tool in the "Peer-to-peer IP blocklist" category.
The P2B Converter Story
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our P2B converter.