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                                                                    EXHIBIT 23.3

                         INDEPENDENT AUDITORS' CONSENT

We consent to the incorporation by reference in this Registration Statement of
Metromedia Fiber Network, Inc. on Form S-3 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 the Registration Statement on
Form S-4 (Registration No. 333-49684) of Metromedia Fiber Network, Inc. dated
November 9, 2000.

We also consent to the reference to us under the heading "Experts" in this
Registration Statement.

/s/ DELOITTE & TOUCHE LLP
San Jose, California
January 9, 2001



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