Internet Health Report
Delivers data about network performance (latency) between major United States Internet backbones.

Internet Measurement Infrastructure - CAIDA
Short summaries of current measurement projects offering public reports.

Internet Traffic Report
Reports on the current performance of major Internet routes around the world.

IPMA Statistics and Daily Reports
The Internet Performance Measurement and Analysis (IPMA) project collects network statistics at the AADS, MAE-East, MAE-West, PacBell, and Sprint interconnection points.

Long-Term Traffic Statistics
Technical information and links regarding long term statistics. In depth Analysis of traffic over the major protocols.

Measurement, Analysis, Modeling and Generation
Bell Labs research group. Contains theories, statistics, reports, and free measurment tools for networks.

The Internet Traffic Archive
A moderated repository to support widespread access to traces of Internet network traffic. The traces can be used to study network dynamics, usage characteristics, and growth patterns.