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 464
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-03-22 | 464-263-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | OAK FOR SO | IL |
| 2022-03-14 | 464-646-4XXX | 4000–4999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | PALOS PARK | IL |
| 2022-03-04 | 464-444-8XXX | 8000–8999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | BEECHER | IL |
| 2022-03-01 | 464-333-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | HARVEY | IL |
| 2022-03-01 | 464-777-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | WILLOW SPG | IL |
| 2022-03-01 | 464-999-5XXX | 5000–5999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | THORNTON | IL |
| 2022-02-01 | 464-768-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | CHICAGOHTS | IL |
| 2022-01-31 | 464-733-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | BLUEISLAND | IL |
| 2022-01-25 | 464-927-8XXX | 8000–8999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | CICERO | IL |
| 2022-01-08 | 464-222-9XXX | 9000–9999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | MOKENA | IL |
| 2022-01-06 | 464-666-3XXX | 3000–3999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | CALUMET CY | 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.