Teletech INC Ltd and its local partner Infozillion Teletech BD Ltd successfully launched mobile number portability in Bangladesh. Four Mobile operators serving more than 140 million mobile subscribers, PSTN operator, VoIP operators serving under IPTSP licenses, 28 International Gateway licensed operators are connected to the central Number Portability Clearing House (NPCH) and Central reference data Base (CRDB) platform to provide porting services from 9:00 until 23:00 from Sunday until Thursday except national holidays.