NumberResearchRecent thousands-block assignments
17 blocks assigned in May 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, May 2026 — NPA 618
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-05-29 | 618-642-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | GREENVILLE | IL |
| 2026-05-21 | 618-270-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | WAYNE CITY | IL |
| 2026-05-21 | 618-449-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | SPARTA | IL |
| 2026-05-21 | 618-516-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | FAIRFIELD | IL |
| 2026-05-21 | 618-853-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | EVANSVILLE | IL |
| 2026-05-20 | 618-270-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | WAYNE CITY | IL |
| 2026-05-20 | 618-853-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | EVANSVILLE | IL |
| 2026-05-19 | 618-886-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | TROY | IL |
| 2026-05-13 | 618-832-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | JERSEYVL | IL |
| 2026-05-11 | 618-587-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TILDEN | IL |
| 2026-05-11 | 618-809-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MT VERNON | IL |
| 2026-05-11 | 618-921-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | METROPOLIS | IL |
| 2026-05-08 | 618-688-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - IL | 984E | EDGEMONT | IL |
| 2026-05-08 | 618-981-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANITE CY | IL |
| 2026-05-08 | 618-981-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANITE CY | IL |
| 2026-05-08 | 618-990-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - IL | 984E | WOOD RIVER | IL |
| 2026-05-06 | 618-503-1XXX | 1000–1999 | Assigned | ONVOY, LLC | 224C | CARBONDALE | IL |
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.