Worldvision has sold off-net rights to the UPN sitcom “Moesha” to 25 stations, reaching 42% of the country, for debut in the year 2000.Nearly all the sales are to UPN affiliates, with eight of the top 10 markets represented, excluding Los Angeles and San Francisco. Buyers include: WWOR New York, WPWR Chicago, KTXA Dallas, WPSG Philadelphia, WSBK Boston, WUPA Atlanta, KTXH Houston, WDCA Washington, D.C., WKBD Detroit, WBFS Miami, KTVD Denver and WB affiliate WRAZ Raleigh, N.C. Terms of the sales were not disclosed, but sources said the deals are probably similar to those on similar ethnic sitcoms, such as Paramount Domestic TV’s “Sister, Sister,” which is expected to generate about $600,000 an episode. It’s unusual for a sitcom to be sold so far in advance, but with other ethnic and netlet sitcoms out being sold now, sources say Worldvision didn’t want to fall behind. It’s expected that off-netlet sitcoms probably won’t penetrate as deeply outside the top markets.