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| npa-nxx | State/Province | Company | FRN | RMD | OCN | Rate Center | CLLI | Assign Date | Misc |
| 628-329 | CA | T-MOBILE USA, INC. (T-Mobile US, Inc) | 0017078262 | RMD0019051 | 6529 | SAUSALITO | CNCRCALZ0MD | 11/06/2025 | Prefix Type: PCS Switch Name: CONCORD Switch Type: N/A LATA: San Francisco CA (722) Tandem: N/A 🔧 Explore Switch(CLLI: CNCRCALZ0MD)) |
| 628-329 is split into 1,000-number blocks - detail below | |||||||||
| 628-329-9XXX | CA | T-MOBILE USA, INC. (T-Mobile US, Inc) | 0017078262 | RMD0019051 | 6529 | SAUSALITO | CNCRCALZ0MD | 11/06/2025 | Prefix Type: PCS Switch Name: CONCORD Switch Type: N/A LATA: San Francisco CA (722) Tandem: N/A 🔧 Explore Switch(CLLI: CNCRCALZ0MD)) |