878 Area Code has 5 prefixes

PrefixPrimary CityCarrier
878-201PittsburghPeerless Network Of Pennsylvania, Llc - Pa
878-202PittsburghTime Warner Cable Information Svcs (pa), Pa
878-295PittsburghAerial Communications
878-302PittsburghPeerless Network Of Pennsylvania, Llc - Pa
878-422FreeportSalsgiver Telecom