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EXHIBIT 23.1
CONSENT OF INDEPENDENT AUDITORS
We consent to the reference to our firm under the caption "Experts" in the
Registration Statement (Form S-3) and related Prospectus of Metromedia Fiber
Network, Inc. for the registration of Debt Securities, Preferred Stock, Class A
Common Stock and Warrants and to the incorporation by reference therein of our
report dated March 8, 2000, with respect to the consolidated financial
statements and schedule of Metromedia Fiber Network, Inc. included in its Annual
Report (Form 10-K) for the year ended December 31, 1999, filed with the
Securities and Exchange Commission.
/s/ Ernst & Young LLP
New York, New York
January 9, 2001
