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USSD (Unstructured Supplementary Service Data) codes [1] are mobile dial codes that can be used for communicating with the service provider's computers (i.e. for WAP browsing, prepaid callback service, mobile-money services, location-based content services, menu-based information services, and as part of configuring the phone on the network).
This list contains the mobile country codes (MCC) and mobile network codes (MNC) for networks with country codes between 200 and 299, inclusive. This range covers Europe, as well as: the Asian parts of the Russian Federation and Turkey; Georgia; Armenia; Greenland; the Azores and Madeira as parts of Portugal; and the Canary Islands as part of Spain.
ETSI and 3rd Generation Partnership Project (3GPP) standards, such as GSM and LTE, define supplementary service codes that make it possible to query and set certain service parameters (e.g., call forwarding) directly from mobile devices.
The user submits a code corresponding to the service available. USSD can be used to provide independent calling services such as a callback service (to reduce phone charges while roaming), enhance mobile marketing capabilities or interactive data services. USSD is commonly used by prepaid GSM cellular phones to query the available balance.
Airtel: Bharti Airtel Bangladesh Ltd. Operational: GSM 900 / GSM 1800 / UMTS 2100: Formerly Warid Telcom, later Airtel. Currently merged with Robi keeping brand name Airtel 470: 09: ollo: Bangladesh Internet Exchange Limited (BIEL) Not operational: LTE 800 / LTE 2600 / WiMAX 3500 [16] shut down 2019 [17] 470: 10: Banglalion: Banglalion ...
A call detail record contains data fields that describe a specific instance of a telecommunication transaction, but does not include the content of that transaction. By way of simplistic example, a call detail record describing a particular phone call might include the phone numbers of both the calling and receiving parties, the start time, and duration of that call.
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Rank Operator Technology Subscribers (in millions) Ownership 1: MTN: GSM-900/1800 MHz (GPRS, EDGE) 2100 MHz UMTS, HSDPA: 6.2 [1] (Q4 2020): MTN: 2: Roshan: GSM-900 MHz (GPRS, EDGE) 2100 MHz UMTS, HSPA+