- City / exchange
- Lombard
- Province / state
- Illinois
- Country
- United States
- Carrier
- T-mobile Usa, Inc.
- Line type
- Likely mobile
- OCN
- 6529
- Status
- In Service
- Assigned
- 10/13/2014
- Number pooling
- Yes (block shared between carriers)
331-307 phone numbers
Lombard, Illinois, United States · T-mobile Usa, Inc.
Reported numbers in 331-307
No numbers in this block have been reported by visitors yet.
What does the 331-307 prefix tell you?
Every North American number is area code + prefix + line. The prefix 331-307 was assigned to T-mobile Usa, Inc. on 10/13/2014 for the Lombard exchange. A call from this block usually originates from a T-mobile Usa, Inc. customer in or near Lombard, but caller ID can be spoofed to show any number.