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 227
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-04-07 | 227-302-0XXX | 0000–0999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WSHNGTNZN4 | MD |
| 2026-04-07 | 227-302-1XXX | 1000–1999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WSHNGTNZN4 | MD |
| 2026-04-07 | 227-302-2XXX | 2000–2999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WSHNGTNZN4 | MD |
| 2026-04-07 | 227-302-3XXX | 3000–3999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WSHNGTNZN4 | MD |
| 2025-12-19 | 227-275-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WSHNGTNZN4 | MD |
| 2025-12-19 | 227-275-5XXX | 5000–5999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WSHNGTNZN4 | MD |
| 2025-12-16 | 227-245-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | GAITHERSBG | MD |
| 2025-12-03 | 227-727-3XXX | 3000–3999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WSHNGTNZN6 | MD |
| 2025-09-04 | 227-288-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | HAGERSTOWN | MD |
| 2025-04-03 | 227-265-9XXX | 9000–9999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WSHNGTNZN3 | MD |
| 2025-01-27 | 227-772-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WSHNGTNZN4 | MD |
| 2025-01-27 | 227-772-5XXX | 5000–5999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WSHNGTNZN4 | MD |
| 2025-01-27 | 227-772-6XXX | 6000–6999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WSHNGTNZN4 | MD |
| 2024-09-24 | 227-245-2XXX | 2000–2999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | GAITHERSBG | MD |
| 2024-09-24 | 227-245-3XXX | 3000–3999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | GAITHERSBG | MD |
| 2024-08-12 | 227-239-2XXX | 2000–2999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | HAGERSTOWN | MD |
| 2024-08-12 | 227-239-3XXX | 3000–3999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | HAGERSTOWN | MD |
| 2024-07-30 | 227-231-8XXX | 8000–8999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WSHNGTNZN6 | MD |
| 2024-03-14 | 227-229-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WSHNGTNZN4 | MD |
| 2024-03-14 | 227-229-5XXX | 5000–5999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WSHNGTNZN4 | MD |
| 2023-12-22 | 227-223-3XXX | 3000–3999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | FREDERICK | MD |
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.