PSINET INC.

CONNECT4

business networking software, namely, software for use in electronic mail, web and file transfer protocol (FTP), gopher applications, telnet applications, electronic news disseminations, file sharing, network file systems (NFS), client and server applications, cross-platform printing, line printer routine (LPR) and line printer daemon (LPD) applications, and for remote dial-in access;CONNECT 4;

CROSSING GUARD

filtering/censorship mechanism to block web, news and file transfer protocol sites;

EASYPIX

client-server application allowing quick and efficient viewing of graphics and text files from global communication network access services newsgroups;EASY PICKS;

INSTANT LAN-DIAL

communication services, namely providing telephone line dial-up connection and access services to link computer systems electronically and allow users to transmit or receive data, documents and messages between local areas networks and world wide computer networks;INSTANT LAN DIAL;INSTANT;

INTER.NET

Providing multiple-user access to a global computer information network;INTER DOT NET;INTERNET;

INTERDOTNET

electronic transmission of data and messages, namely the electronic transmission of data and messages via modem, ISDN (Integrated Services Digital Network), xDSL (generic digital subscriber line services) or other data access mechanisms into computer data communication systems;INTER DOT NET;

INTERVOX

multipoint video conferencing for personal computers enabled through the use of an Internet Protocol data network;

LAN ISDN

IN THE STATEMENT, COLUMN 1, LINE 4, NY SHOULD BE DELETED, AND VA SHOULD BE INSERTED.;communications services, namely providing telephone line dial-up connection and access services to link computer systems electronically and allow users to transmit or receive data, documents and messages;LAN INTEGRATED SERVICES DIGITAL NETWORK;LAN and ISDN;The lining in the drawing is a feature of the mark and not intended to indicate color.;

PSI INTRANET

In the statement, Column 1, before line 1, PSINET INC., (New York Corporation), 510 Huntmar Park Drive, Herndon, VA 22070, by change of name should be inserted.;multi-protocol communications service by which customers' computers are linked to one another and to local and wide area networks;PERFORMANCE SYSTEMS INTERNATIONAL INTRA NETWORK;

PSICABLE

In the statement, Column 1, before line 1, PSINET INC. (New York Corporation), 510 Huntmar Park Drive, Herndon, VA 22070, By change of name should be inserted.;electronic transmission of data and message via cable operator system over a computer network or other data services;

PSIMAIL

electronic mail services;P S I MAIL;

PSINET

PSI NETWORK;providing multiple-user access to a global computer information network for the transfer and dissemination of a wide range of information;

PSINET INTERNETPAPER

transmission of electronic information over the global communications network capable of being received and printed out on equipment, namely, printers and facsimile machines;

PSINET ISDN PRIME

communication services, namely, dial-up connection and access services which allow users to transmit and receive data, documents and messages via electronically and telephonically linked computer systems;ISDN;

PSINET PIPELINE

electronic transmission of data and messages, namely, the electronic transmission of data and messages via modem or other data access mechanisms into computer data communications systems;

PSINET PIPELINE PROFESSIONAL

electronic transmission of data and messages, namely, the electronic transmission of data and messages via modem or other data access mechanisms into computer data communications systems;

PSINET VISP

providing multiple user access to a global computer information network;VISP;

PSIVOICE

a family of voice communication services that are enabled through the use of Internet Protocol data network;