NumberResearchRecent thousands-block assignments
6 blocks assigned in June 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, June 2026 — NPA 636
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-06-30 | 636-267-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MO | 093F | ANTONIA | MO |
| 2026-06-19 | 636-427-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST PETERS | MO |
| 2026-06-19 | 636-450-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HARVESTER | MO |
| 2026-06-16 | 636-313-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | MANCHESTER | MO |
| 2026-06-16 | 636-430-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | FORISTELL | MO |
| 2026-06-11 | 636-887-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WENTZVILLE | MO |
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.