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An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.


Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

帳單寄送、收費和費用 (Billing, Charges and Fees)

協助工具問題 (Accessibility Issues)

服務可用性 (Service Availability)

欺詐、詐騙和警示 (Fraud, Scams and Alerts)

無線、手機和行動 (Wireless, Cellular and Mobile)

雜項 (Miscellaneous)



Thursday, July 9, 2020