Hi,
General rule of thumb for the IGI (family search) provided the entries are NOT member submitted but extracted records. If it doesn`t state the actual church then it is normally the Parish Church for that particular town/Parish. Any other churches for the same town/parish are named.
However, occasionally other records are on the same film. To be certain, when you have accessed the record make a note of the Source number and then go the the Family History Library Catalog. Click on Film/fiche search and type in the Source number. If you click on the entry it should bring up what is included on the film.
Hope I haven`t missed anything out.
Regards,
Mo