About the CUIT Network

Network Connections

CUIT maintains Columbia's commodity INTERNET connections, which include:

Columbia's research and education network connections include:

  • NYSERNet NYC and statewide regional optical network ("dark fiber")
  • 10 Gbps connection to NYSERNet's IP network and from there to Internet2 and National Lambda Rail (NLR) packet net
  • Potential for much higher bandwidth and advanced networking connectivity as needed for specific research needs such as dedicated "waves" or "lambdas" and international dynamic circuit networks


CUIT participates in various aspects of the Internet2 initiative, including IP multicast, IPv6, IP telephony, and IP videoconferencing. Please view our Internet2 project page for more details.

NetFlow Analysis

CUIT collects and analyzes in- and out-bound Internet traffic in order to gain greater configurability and performance.   Tools used to perform this analysis include graph generator and flow collection modules created by our own staff as CUIT open source software projects.

To address the problems of abuse of Peer-to-Peer file sharing programs without unduly invading our customers' privacy, we implemented an automatic rate-limiting system for users based on a usage quota.

Registration and Hosting

Information on how you can acquire a vanity domain for your University-related project (e.g. www.myproject.org) is posted on the Columbia University Information Technology Policy page.

Registation of computer hardware addresses is optional. Static IPs and hostnames are available via online registration. Wireless registrations are not an option at this time.