What is phone number of USCIS, and how can I reach a live CSR? The phone number for all service centers is (800) 375-5283.
Direct phone number for a specific center is unknown, while you might reach an IO who is handling your case after inputting your case receipt# (POJ). USCIS Instructions on Phone System
Fax# for CSC: (949) 389-8689/8070
Fax# for NSC: (402) 219-6171/6344
Fax# for TSC: (214) 962-2632
Email for CSC: csc-ncsc-followup@dhs.gov
Email for NSC: ncscfollowup.nsc@dhs.gov
Email for TSC: tsc.ncscfollowup@dhs.gov
Email for VSC: vsc.ncscfollowup@dhs.gov
Email for USCIS HQ: SCOPSSCATA@dhs.gov （21 天無回音時才使用此電郵）
