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 636
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-02-17 | 636-874-2XXX | 2000–2999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | OFALLON | MO |
| 2022-02-04 | 636-746-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | MAXVILLE | MO |
| 2022-01-11 | 636-867-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | JONESBURG | MO |
| 2022-01-05 | 636-637-8XXX | 8000–8999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | FSSCRSTLCY | MO |
| 2021-05-26 | 636-237-9XXX | 9000–9999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | CHESTERFLD | MO |
| 2021-05-26 | 636-438-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | MANCHESTER | MO |
| 2021-05-13 | 636-837-4XXX | 4000–4999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | HERCUMPVLY | MO |
| 2021-05-11 | 636-679-5XXX | 5000–5999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | WENTZVILLE | MO |
| 2020-12-22 | 636-837-8XXX | 8000–8999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | HERCUMPVLY | 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.