FIFA says the players were initially banned from "taking part in any football-related activity" through to April 5, 2013, by the Finland Football Federation last month.
They are: Godfrey Chibanga, Chileshe Chibwe, Steven Kunda, Christopher Musonda, Chanda Mwaba and Nchimunya Mweetwa.
The Zambian players with the RoPS team from Rovaniemi were implicated in a match-fixing scandal that led to a criminal trial last year.
Several players received suspended prison sentences for accepting up to $40,000 in bribes to manipulate the outcome of matches.
Singapore businessman Wilson Raj Perumal received a two-year prison sentence.