- City / exchange
- St Louis
- Province / state
- Missouri
- Country
- United States
- Carrier
- New Cingular Wireless Pcs, LLC - Il
- Line type
- Likely mobile
- OCN
- 6534
- Status
- In Service
- Assigned
- 10/09/2025
- Number pooling
- Yes (block shared between carriers)
557-243 phone numbers
St Louis, Missouri, United States · New Cingular Wireless Pcs, LLC - Il
Reported numbers in 557-243
No numbers in this block have been reported by visitors yet.
What does the 557-243 prefix tell you?
Every North American number is area code + prefix + line. The prefix 557-243 was assigned to New Cingular Wireless Pcs, LLC - Il on 10/09/2025 for the St Louis exchange. A call from this block usually originates from a New Cingular Wireless Pcs, LLC - Il customer in or near St Louis, but caller ID can be spoofed to show any number.