Exhibit 23.3
CONSENT OF INDEPENDENT AUDITORS
We consent to the reference to our firm under the caption "Experts"
in the Registration Statement on Form S-3 Post-Effective Amendment No. 1 to
Registration Statement on Form S-4 for the registration of PSINet Inc.'s common
stock and to the incorporation by reference therein of our report dated February
8, 2000 with respect to the consolidated financial statements of Metamor
Worldwide, Inc. included in its Annual Report (Form 10-K) for the year ended
December 31, 1999, filed with the Securities and Exchange Commission.
Ernst & Young LLP
Houston, Texas
June 28, 2000
