NETWORK CODES.

23420 = Hutchinson 3G (3) – United Kingdom
23410 = O2 – United Kingdom
23415 = Vodafone – United Kingdom
23430, 23431, 23432 = T-Mobile – Virgin – UK (Also use MNC 31 & 32)
23433 = Orange – United Kingdom
23450 = Jersey Telecom GSM – United Kingdom
23455 = Guernsey Telecoms GSM – United Kingdom
23458 = Manx Telecom Pronto GSM – United Kingdom
23400 = Virgin 3510i
23400001 = Virgin
*Rest of the world :*
41220 = Telephone Development Co,Afghanistan
41201 = Telephone Systems Int Inc – Afghanistan
27601 = Albanian Mobile Comms – Albania