Afaik, the C zone does not correspond to a geographic or administrative bonundary. One solution might be to query journeys from each station to the center of Berlin and check response for a C ticket. Unfortunately, as derhuerst/vbb-hafas#17 suggests, the API doesn't return them anymore. It has been fixed. vbb-hafas returns and array journey.tickets now.
Afaik, the
C
zone does not correspond to a geographic or administrative bonundary. One solution might be to query journeys from each station to the center of Berlin and check response for aC
ticket.Unfortunately, as derhuerst/vbb-hafas#17 suggests, the API doesn't return them anymore.It has been fixed.vbb-hafas
returns and arrayjourney.tickets
now.