Every mobile SIM card in the world has two codes that identify which carrier it belongs to: the Mobile Country Code (MCC) and the Mobile Network Code (MNC). Most people never see these, but if you work in telecom or you're traveling internationally and trying to understand which network your phone picked up, these codes matter.

Provider Lookup

You're debugging a roaming issue with your work phone. The support team is asking which network you're actually connected to, and your phone is just showing a weird code instead of the carrier name. You've got "310-260" in your phone's network settings. What does that actually mean?

The GSM provider lookup tool decodes that for you. MCC 310 is the United States. MNC 260 is T-Mobile. So your phone is connected to T-Mobile in the US. Suddenly the connection problem makes sense — maybe you're in a dead zone for that carrier, or maybe the roaming agreement is broken.

It's useful for international travel too. You're in Copenhagen for two weeks and your phone picks up a network you don't recognize. You look up the MCC/MNC codes and realize you're on a Danish carrier that might have better rates than your home carrier's roaming agreement. Worth knowing when you're going to be abroad and dealing with data charges.

It's also just interesting from a telecom nerd perspective. Every country has different networks, different codes, different pricing structures. When you understand the MCC/MNC system, the global mobile network stops being a black box and starts making sense. You can see how your SIM follows you across borders and how carriers exchange traffic with each other.

The tool is fast and works entirely in your browser — there's no server involved. Your location data and your lookups stay private. Whether you're troubleshooting connectivity issues, traveling abroad, or just curious about how global mobile networks work, this tool answers your questions immediately.

Tag: gsm

GSM Provider Lookup — Find Out Who's Behind a Mobile Number