UPDATE: Beginning October 24, 2016, the US Consular Agency in Cebu will return to normal operations.
The Consular Agency is open from 8am until 10.30am (Monday-Friday) and closed on Wednesdays and designated US and Philippine holidays.
If you need to contact the Cebu office, you may call (63 32) 231-1261.
Alternatively, contact the Consular Agency by e-mail at ACSINFOCebu@state.gov or AmConCebCRBA@state.gov.
The consulate website is here