BSNL Carrier From
India

The BSNL Carrier From India is denoted by codes: 404 34, 404 38, 404 51, 404 53, 404 54, 404 55, 404 57, 404 58, 404 59, 404 62, 404 64, 404 66, 404 71, 404 72, 404 73, 404 74, 404 75, 404 76, 404 77, 404 80, 404 81. The followings IDs are called HNI (Home network identity). This code is created by the combination of two other Mobile Country Code (MCC) and Mobile Network Code (MNC). The first three numbers stand for the MCC and they are used in order to identify the region which the carried comes from (in the following example it’s India). The last numbers of the HNI code are equal with the MNC and this ID is given for the specific mobile network operator.

Besides BSNL India has assigned country code + 91. This number + 91 is equal with international calling code and it’s simply the telephone dialing prefixes used for calling BSNL numbers.
BSNL uses 2 GSM bands, 1 UMTS bands, 0 and 0 CDMA bands.. You can read the specific frequency bands in the table below. All bands of the BSNL are display in MHz units.
Another important information in BSNL India architectures is the standard of used protocols. It also uses 4 protocols such as GSM, UMTS, LTE, CDMA. The ISO standard code of BSNL is IN. You can see more info about this mobile network operator at http://www.bsnl.co.in/. How to check BSNL coverage? How to check if your phone will work in India?