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EXHIBIT 23.3
INDEPENDENT AUDITORS' CONSENT
We consent to the use in this Amendment No. 1 to Registration Statement
No. 333-49684 of Metromedia Fiber Network, Inc. on Form S-4 of our report with
respect to AboveNet Communications, Inc. dated July 28, 1999 (September 8, 1999
as to Note 17), appearing in the Prospectus which is part of this Registration
Statement.
We also consent to the reference to us under the heading "Experts" in such
Prospectus.
/s/ DELOITTE & TOUCHE LLP
San Jose, California
January 10, 2001