The System ID (SID) code is used to identify base stations for some radio technologies, and is used to identify a system for billing purposes for others (e.g. GSM and LTE). When used only for billing it may be known as a BID code. The assignment of SID/BID ranges to assignment authorities is managed by IFAST.
This database contains SID and BID ranges that have been assigned to countries and other international entities by IFAST. You can also query the assignments of individual SID codes to wireless operators.
Contact the SID Administrator for help or more information.
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