Local Calling Guide
Area code/prefix search
NPA: 331 [Rate centres in NPA 331] [Dial plan for NPA 331]
NXX: 328
NPA-NXX | BLOCK | Rate Centre | Region | Switch | OCN | LATA | LIR | Eff date | Disc date |
---|---|---|---|---|---|---|---|---|---|
331-328 | A | Naperville | IL | BFGVILASG00 | 6534 NEW CINGULAR WIRELESS PCS, LLC - IL | 358 | 2025-01-30 | ||
331-328 | 0 | Naperville | IL | 6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 358 | 2025-05-12 | |||
331-328 | 1 | Naperville | IL | 6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 358 | 2025-06-07 | |||
331-328 | 8 | Naperville | IL | 6534 NEW CINGULAR WIRELESS PCS, LLC - IL | 358 | 2025-04-12 | |||
331-328 | 9 | Naperville | IL | BFGVILASG00 | 6534 NEW CINGULAR WIRELESS PCS, LLC - IL | 358 | 2025-01-30 |
Last updated: Sun, 01 Jun 2025 02:18:11 UTC
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