NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
Most active assignees, all time — NPA 445
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-01-10 | 445-288-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | PHPHSBZN33 | PA |
| 2019-01-30 | 445-444-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | PHLDLPHZN1 | PA |
| 2019-01-30 | 445-500-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | PHPHSBZN40 | PA |
| 2018-12-17 | 445-500-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | PHPHSBZN40 | PA |
| 2018-03-08 | 445-800-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | PHLDLPHZN3 | PA |
| 2018-02-08 | 445-333-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | QUAKERTOWN | PA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.