NumberResearchRecent thousands-block assignments
11 blocks assigned in April 2026 · 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, April 2026 — NPA 878
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-04-29 | 878-878-7XXX | 7000–7999 | Assigned | AHOI LLC | 883K | NEWBEDFORD | PA |
| 2026-04-14 | 878-277-5XXX | 5000–5999 | Assigned | ONVOY, LLC - PA | 547E | BLAIRSVL | PA |
| 2026-04-14 | 878-286-9XXX | 9000–9999 | Assigned | ONVOY, LLC - PA | 547E | JEANNETTE | PA |
| 2026-04-14 | 878-298-1XXX | 1000–1999 | Assigned | ONVOY, LLC - PA | 547E | GREENSBURG | PA |
| 2026-04-14 | 878-299-8XXX | 8000–8999 | Assigned | ONVOY, LLC - PA | 547E | INDIANA | PA |
| 2026-04-14 | 878-307-0XXX | 0000–0999 | Assigned | ONVOY, LLC - PA | 547E | ROCHESTER | PA |
| 2026-04-14 | 878-598-9XXX | 9000–9999 | Assigned | ONVOY, LLC - PA | 547E | AMBRIDGE | PA |
| 2026-04-14 | 878-881-8XXX | 8000–8999 | Assigned | ONVOY, LLC - PA | 547E | BROWNSVL | PA |
| 2026-04-08 | 878-225-4XXX | 4000–4999 | Assigned | ONVOY, LLC - PA | 547E | ELLWOOD CY | PA |
| 2026-04-08 | 878-305-1XXX | 1000–1999 | Assigned | ONVOY, LLC - PA | 547E | ALIQUIPPA | PA |
| 2026-04-01 | 878-270-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CRIDERSCOR | 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.