NY- The apple of John Gotti’s eye is rotten to the core, said a Brooklyn judge who sentenced one of the Gambino crime family’s top earners to nine years in prison yesterday for his role in a porn scam.

Richard Martino, 46, [pictured] apologized to Brooklyn federal Judge Carol Amon and the victims he duped into doling out millions of dollars to his smutty Internet and phone scams.

The Gambino soldier pleaded guilty last February to racketeering and mail and wire fraud for bilking $650 million from porn perusers in what Assistant Brooklyn U.S. Attorney Eric Komitee described as the “most sophisticated Internet fraud” he has ever seen.

Martino has admitted to luring visitors onto porn Web sites by promising the steamed-up surfers “free tours.”

Internet users would then be billed up to $90 when they gave their credit-card number. The racket netted him $230 million between 1996 and 2002.

Countless other victims responded to raunchy magazine ads offering free phone sex, but their numbers would be billed $30 a month.

Despite the astronomical amount Martino scammed, Komitee noted that only $17 million in claims have been filed with the Federal Trade Commission.

The prosecutor said the embarrassment factor of having to admit checking out porn Web sites has kept many people from coming forward.

John Gotti spoke glowingly about Martino’s earning potential in a 1990 conversation the feds caught on tape.