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 315
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2010-12-08 | 315-565-7XXX | 7000–7999 | Assigned | RINGSQUARED TELECOM LLC | 8249 | SYRACUSE | NY |
| 2010-03-01 | 315-697-0XXX | 0000–0999 | Assigned | RINGSQUARED TELECOM LLC | 8249 | CANASTOTA | NY |
| 2009-06-15 | 315-429-6XXX | 6000–6999 | Assigned | RINGSQUARED TELECOM LLC | 8249 | DOLGEVILLE | NY |
| 2009-05-11 | 315-510-8XXX | 8000–8999 | Assigned | RINGSQUARED TELECOM LLC | 8249 | CHITTENNGO | NY |
| 2009-05-11 | 315-787-8XXX | 8000–8999 | Assigned | RINGSQUARED TELECOM LLC | 8249 | GENEVA | NY |
| 2008-05-07 | 315-215-5XXX | 5000–5999 | Assigned | RINGSQUARED TELECOM LLC | 8249 | ALEXNDRIBY | NY |
| 2008-05-07 | 315-871-1XXX | 1000–1999 | Assigned | RINGSQUARED TELECOM LLC | 8249 | LYONS | NY |
| 2008-02-27 | 315-281-1XXX | 1000–1999 | Assigned | RINGSQUARED TELECOM LLC | 8249 | ROME | NY |
| 2007-10-26 | 315-209-1XXX | 1000–1999 | Assigned | RINGSQUARED TELECOM LLC | 8249 | AUBURN | NY |
| 2007-10-26 | 315-231-4XXX | 4000–4999 | Assigned | RINGSQUARED TELECOM LLC | 8249 | ONEIDA | NY |
| 2007-10-26 | 315-288-2XXX | 2000–2999 | Assigned | RINGSQUARED TELECOM LLC | 8249 | CICERO | NY |
| 2007-10-26 | 315-303-1XXX | 1000–1999 | Assigned | RINGSQUARED TELECOM LLC | 8249 | BALDWINSVL | NY |
| 2007-10-26 | 315-326-6XXX | 6000–6999 | Assigned | RINGSQUARED TELECOM LLC | 8249 | OSWEGO | NY |
| 2007-10-26 | 315-520-7XXX | 7000–7999 | Assigned | RINGSQUARED TELECOM LLC | 8249 | UTICA | NY |
| 2007-10-26 | 315-554-3XXX | 3000–3999 | Assigned | RINGSQUARED TELECOM LLC | 8249 | SKANEATLES | NY |
| 2007-10-26 | 315-632-7XXX | 7000–7999 | Assigned | RINGSQUARED TELECOM LLC | 8249 | FAYETTEVL | NY |
| 2007-10-26 | 315-775-2XXX | 2000–2999 | Assigned | RINGSQUARED TELECOM LLC | 8249 | WATERTOWN | NY |
| 2007-10-26 | 315-935-2XXX | 2000–2999 | Assigned | RINGSQUARED TELECOM LLC | 8249 | LIVERPOOL | NY |
| 2007-01-16 | 315-200-1XXX | 1000–1999 | Assigned | RINGSQUARED TELECOM LLC | 8249 | SYRACUSE | NY |
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.