NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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 540
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-06-30 | 540-913-1XXX | 1000–1999 | Assigned | VONAGE AMERICA LLC | 197D | WINCHESTER | VA |
| 2022-06-30 | 540-919-9XXX | 9000–9999 | Assigned | VONAGE AMERICA LLC | 197D | FREDECKSBG | VA |
| 2020-05-08 | 540-783-0XXX | 0000–0999 | Assigned | VONAGE AMERICA LLC | 197D | STAFFORD | VA |
| 2020-05-08 | 540-783-1XXX | 1000–1999 | Assigned | VONAGE AMERICA LLC | 197D | STAFFORD | VA |
| 2018-11-28 | 540-944-0XXX | 0000–0999 | Assigned | VONAGE AMERICA LLC | 197D | BLACKSBURG | VA |
| 2018-11-28 | 540-944-1XXX | 1000–1999 | Assigned | VONAGE AMERICA LLC | 197D | BLACKSBURG | VA |
| 2018-11-28 | 540-944-2XXX | 2000–2999 | Assigned | VONAGE AMERICA LLC | 197D | BLACKSBURG | VA |
| 2018-11-28 | 540-944-3XXX | 3000–3999 | Assigned | VONAGE AMERICA LLC | 197D | BLACKSBURG | VA |
| 2018-11-28 | 540-944-4XXX | 4000–4999 | Assigned | VONAGE AMERICA LLC | 197D | BLACKSBURG | VA |
| 2018-11-28 | 540-944-5XXX | 5000–5999 | Assigned | VONAGE AMERICA LLC | 197D | BLACKSBURG | VA |
| 2018-11-28 | 540-944-6XXX | 6000–6999 | Assigned | VONAGE AMERICA LLC | 197D | BLACKSBURG | VA |
| 2018-11-28 | 540-944-7XXX | 7000–7999 | Assigned | VONAGE AMERICA LLC | 197D | BLACKSBURG | VA |
| 2018-11-21 | 540-418-9XXX | 9000–9999 | Assigned | VONAGE AMERICA LLC | 197D | BLACKSBURG | VA |
| 2018-11-21 | 540-739-8XXX | 8000–8999 | Assigned | VONAGE AMERICA LLC | 197D | BLACKSBURG | VA |
| 2018-06-22 | 540-646-0XXX | 0000–0999 | Assigned | VONAGE AMERICA LLC | 197D | HARRISONBG | VA |
| 2018-03-20 | 540-566-0XXX | 0000–0999 | Assigned | VONAGE AMERICA LLC | 197D | ROANOKE | VA |
| 2018-03-20 | 540-791-0XXX | 0000–0999 | Assigned | VONAGE AMERICA LLC | 197D | CULPEPER | VA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.