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Measurement study mapping the I2P anonymity network and analyzing its observable structure.

Independent dashboard analyzing Tor relay operators, concentration and network diversity.

Protocol and API documentation for Tor relay and bridge status data used by network tools.

Active public discussion archive for Tor relay and bridge operators, support questions and network issues.

Official Tor archive providing recent and historical network descriptors for reproducible research.

Tor network-health dashboard showing directory consensus, votes, signatures and relay measurements.

Official source repository for the Tor network daemon and core protocol implementation.

Public community forum discussing I2P software, services, development and network operations.

Network test that checks whether Tor access appears blocked and contributes measurement data.

Official service-status page for Tor Project websites, bridges, directories and network services.

Official page that tests whether the current connection appears to be using the Tor network.

Historical visualization and research record mapping a sample of linked Tor onion services.

Tor measurement project collecting performance data for public relays, bridges and onion services.

Public-health research measuring harmful-content availability and searches on the Tor network.

Official interface for exploring public Tor relay and bridge metadata from Onionoo.

Tor Project hub for technical reports, open research questions, datasets and research safety guidance.

Official Tor service distributing bridge relay addresses to users facing network blocking.

Historical lookup showing whether an IP address appeared as a Tor relay on a specified date.

Europol and EMCDDA report on darknet drug markets, policy implications and research evidence.

Question-and-answer archive covering Tor configuration, relays, onion services and research.

Reporting and explainers on dark-web activity, leak sites and underground cybercrime.

Analyst posts on deep- and dark-web activity, threat actors and underground communities.

Research study examining the structure and technical characteristics of dark-web content and services.

Public-interest archive preserving leaked and released datasets for journalism and historical research.