Having an understanding of Network prefix is imminent as various network operate in the Philippines with almost identical network codes and prefixes. If you are concerned to 0906 what network in Philippines or which Telecom provides cellular services with 0906 prefix. Here is answer to your query;
0906 is a network code or prefix of Globe Telecom which the largest service provider in the Philippines.
Globe Telecom further operate the TM Tambayan & GOMO services in the country.
Read Here: Globeone App – How to Download? Compatibility and Uses