LocationUnited States of AmericaUS
United States of America landscape

PLMN ID · 312670

312
mcc
United States of America
670
mnc
FirstNet

MCC

Mobile Country Code

MNC

Mobile Network Code

PLMN

MCC + MNC

TADIG

Not on file

GSMA roaming code

Technology

No generations on record

2G
0cell towers

Not on record

3G
0cell towers

Not on record

4G
0cell towers

Not on record

5G
0cell towers

Not on record

Record

Updated 2025-04-09

Brand
FirstNet
Operator
AT&T Mobility
Dialling code
—
Mobile Country Code
All 99 networks on MCC 312
Mobile Network Code
PLMN ID
What is a PLMN ID?
TADIG code
—
Technologies
—
VoLTE (4G calling)
UnknownTell us
Wi-Fi calling
UnknownTell us
Video calling
UnknownTell us
VoNR (5G calling)
UnknownTell us
Status
Live

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MVNOs sell their own SIMs and plans but run on FirstNet's network rather than owning one.

No virtual operators on record for FirstNet. Know one that runs here? Add it.

Cell towers

No cells measured on this network yet.

Crowd-sourced cell measurements from OpenCelliD, licensed CC BY-SA 4.0. Counts are cells people have measured, not an operator's own figures.

About FirstNet

AT&T Mobility FirstNet, operating in the United States of America (North America & Caribbean), is a unique mobile network differentiated from standard consumer offerings. Identified by its Mobile Country Code (MCC) of 312 and Mobile Network Code (MNC) of 670, FirstNet is specifically designed for first responders and public safety personnel. While AT&T Mobility also serves the general public, FirstNet prioritizes critical communications, offering dedicated bandwidth and enhanced network capabilities during emergencies and peak usage times allowing police, fire, and medical services to remain connected when other networks might be congested. Created via a public-private partnership with the First Responder Network Authority (FirstNet Authority), this network aims to overcome the interoperability challenges traditionally faced by different agencies during large-scale events. This contrasts with other carriers like Verizon or T-Mobile, which also operate extensive networks within the United States, but aren't inherently focused on public safety through a specifically deployed, prioritised network such as that enabled with FCC and Goverment support. FirstNet utilizes AT&T's existing infrastructure but is enhanced with Band 14 spectrum, providing higher capacity and coverage in both urban and rural areas across the country. This dedicated spectrum is crucial for ensuring reliable communication during natural disasters, large events, and other critical situations.

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