The AT&T carrier from Mexico is denoted by codes: 334 010, 334 050, 334 090. 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 Mexico). The last numbers of the HNI code are equal with the MNC and this ID is given for the specific mobile network operator.
Besides AT&T Mexico has assigned country code + 52. This number + 52 is equal with international calling code and it’s simply the telephone dialing prefixes used for calling AT&T numbers.
AT&T uses 2 GSM bands, 3 UMTS bands, 2 and 0 CDMA bands.. You can read the specific frequency bands in the table below. All bands of the AT&T are display in MHz units.
Another important information in AT&T Mexico architectures is the standard of used protocols. It also uses 5 protocols such as GSM, UMTS, LTE, CDMA.
The ISO standard code of AT&T is MX. You can see more info about this mobile network operator at https://www.att.com.mx/. How to check AT&T coverage? How to check if your phone will work in Mexico? Those information will help you figure out if your device will work in the AT&T roaming. Use out database and check out if your device will be locked or unlocked in AT&T.
Use our CARRIER LOOKUP TOOL in order to make sure that your phone number is using AT&T network.
If you'd like to find out whether your device is going to work with AT&T (Mexico), please check the details below:
All you need to do is compare bands specification from your mobile network with the bands used in your device. You can check the supported bands for your phone by using out phone database.
| Name | AT&T |
|---|---|
| Company | AT&T Mexico |
| Country |  Mexico |
| Country ISO | MX |
| Country code | + 52 |
| Carrier website | https://www.att.com.mx/ |
| Carrier codes |
|
| Mobile prefix | 1 |
| Size of NSN | 10 |
| Number format | +52 1xx xxx xxxx |
| Coverage map | Check AT&T Coverage |
| Comment | Former Nextel, Iusacell. Using also iDEN 800. |
| Subscribers | 12 500 000 (March 2017) |
| GSM bands |
|
| GSM protocols |
|
| UMTS bands |
|
| UMTS protocols |
|
| LTE bands |
|
| LTE protocols |
|
CHECK IMEI 
