The CORES Help Desk will be the contact for all password-related issues. For assistance contact the CORES Help Desk by (toll free) phone, (877) 480-3201 or by e-mail: CORES@fcc.gov. CORES Help Desk hours are Monday–Friday from 7 a.m. to 10 p.m. Eastern Time (ET), Saturday 8 a.m. to 7 p.m. ET, and Sunday 12 noon–6 p.m. ET. Hours will be extended as of December 3.

FCC Technical Support Hotline (ULS Help Desk): (202) 414-1250 or via e-mail at ulscomm@fcc.gov. Contact the Technical Support Hotline about questions concerning computer access to ULS, TIN registration, uploading files, or obtaining temporary passwords when your application has been previously auto-registered.

The hotline is available Monday.–Friday, from 7 a.m.–10 p.m. ET, on Saturday. from 8 a.m.–7 p.m. ET, and Sunday. from 12 noon.–6 p.m. ET. In order to provide better service to ULS users and ensure the security of the electronic filing system, all calls are recorded.