NumberResearchRecent thousands-block assignments
9 blocks assigned in December 2025 · from the daily NANPA thousands-block report, 09/19/2026
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, December 2025 — NPA 773
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-12-30 | 773-448-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | CHICGOZN07 | IL |
| 2025-12-30 | 773-448-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | CHICGOZN07 | IL |
| 2025-12-30 | 773-448-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | CHICGOZN07 | IL |
| 2025-12-18 | 773-277-9XXX | 9000–9999 | Assigned | ONVOY, LLC | 224C | CHICGOZN06 | IL |
| 2025-12-18 | 773-448-7XXX | 7000–7999 | Assigned | ONVOY, LLC | 224C | CHICGOZN07 | IL |
| 2025-12-18 | 773-448-8XXX | 8000–8999 | Assigned | ONVOY, LLC | 224C | CHICGOZN07 | IL |
| 2025-12-18 | 773-448-9XXX | 9000–9999 | Assigned | ONVOY, LLC | 224C | CHICGOZN07 | IL |
| 2025-12-12 | 773-340-7XXX | 7000–7999 | Assigned | ONVOY, LLC | 224C | CHICGOZN08 | IL |
| 2025-12-12 | 773-433-9XXX | 9000–9999 | Assigned | ONVOY, LLC | 224C | CHICGOZN02 | IL |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.