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 835
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-08-12 | 835-203-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | BALLY | PA |
| 2024-03-12 | 835-242-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | READING | PA |
| 2024-03-12 | 835-242-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | READING | PA |
| 2024-03-12 | 835-242-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | READING | PA |
| 2023-12-19 | 835-234-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | ALLENTOWN | PA |
| 2023-10-17 | 835-234-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | ALLENTOWN | PA |
| 2023-09-19 | 835-222-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | ALLENTOWN | PA |
| 2023-05-18 | 835-215-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | ALLENTOWN | PA |
| 2023-05-18 | 835-215-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | ALLENTOWN | PA |
| 2023-04-25 | 835-201-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | BETHLEHEM | PA |
| 2023-01-10 | 835-210-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | ALLENTOWN | PA |
| 2022-10-27 | 835-206-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | ATGLEN | PA |
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.