NumberResearchRecent thousands-block assignments
13 blocks assigned in August 2026 · from the daily NANPA thousands-block report, 09/19/2026
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, August 2026 — NPA 603
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-08-26 | 603-351-6XXX | 6000–6999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | GOFFSTOWN | NH |
| 2026-08-26 | 603-372-8XXX | 8000–8999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | CLAREMONT | NH |
| 2026-08-25 | 603-505-3XXX | 3000–3999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | DERRY | NH |
| 2026-08-25 | 603-732-4XXX | 4000–4999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | MILFORD | NH |
| 2026-08-18 | 603-797-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | PLAISTOW | NH |
| 2026-08-18 | 603-824-0XXX | 0000–0999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | SALEM | NH |
| 2026-08-18 | 603-853-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WOODSVILLE | NH |
| 2026-08-13 | 603-805-5XXX | 5000–5999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | CONCORD | NH |
| 2026-08-13 | 603-857-4XXX | 4000–4999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | SUNCOOK | NH |
| 2026-08-11 | 603-265-3XXX | 3000–3999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | NEW BOSTON | NH |
| 2026-08-11 | 603-377-9XXX | 9000–9999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | MERRIMACK | NH |
| 2026-08-11 | 603-467-9XXX | 9000–9999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | MANCHESTER | NH |
| 2026-08-11 | 603-833-4XXX | 4000–4999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | ROCHESTER | NH |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.