Exhibit 10.1 FOURTH AMENDMENT dated as of July 15, 1999 (this "AMENDMENT"), to the Credit Agreement, dated as of September 29, 1998 (as amended, supplemented or otherwise modified from time to time, the "CREDIT AGREEMENT"), among PSINET INC., a...Fourth • August 16th, 1999 • Psinet Inc • Services-computer programming, data processing, etc. • New York
Contract Type FiledAugust 16th, 1999 Company Industry Jurisdiction