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 315
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2014-11-19 | 315-930-6XXX | 6000–6999 | Assigned | LEVEL 3 TELECOM OF NEW YORK, LP - NY | 8473 | SYRACUSE | NY |
| 2014-11-19 | 315-930-7XXX | 7000–7999 | Assigned | LEVEL 3 TELECOM OF NEW YORK, LP - NY | 8473 | SYRACUSE | NY |
| 2014-11-19 | 315-930-8XXX | 8000–8999 | Assigned | LEVEL 3 TELECOM OF NEW YORK, LP - NY | 8473 | SYRACUSE | NY |
| 2014-11-19 | 315-930-9XXX | 9000–9999 | Assigned | LEVEL 3 TELECOM OF NEW YORK, LP - NY | 8473 | SYRACUSE | NY |
| 2014-09-24 | 315-523-6XXX | 6000–6999 | Assigned | LEVEL 3 TELECOM OF NEW YORK, LP - NY | 8473 | WATERTOWN | NY |
| 2014-09-24 | 315-864-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF NEW YORK, LP - NY | 8473 | UTICA | NY |
| 2012-05-02 | 315-748-7XXX | 7000–7999 | Assigned | LEVEL 3 TELECOM OF NEW YORK, LP - NY | 8473 | SYRACUSE | NY |
| 2010-10-19 | 315-333-8XXX | 8000–8999 | Assigned | LEVEL 3 TELECOM OF NEW YORK, LP - NY | 8473 | ONTARIO | NY |
| 2008-07-14 | 315-505-3XXX | 3000–3999 | Assigned | LEVEL 3 TELECOM OF NEW YORK, LP - NY | 8473 | CICERO | NY |
| 2007-09-10 | 315-414-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF NEW YORK, LP - NY | 8473 | SYRACUSE | NY |
| 2005-07-05 | 315-503-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF NEW YORK, LP - NY | 8473 | MINOA | NY |
| 2004-11-18 | 315-214-7XXX | 7000–7999 | Assigned | LEVEL 3 TELECOM OF NEW YORK, LP - NY | 8473 | SYRACUSE | NY |
| 2004-11-18 | 315-632-3XXX | 3000–3999 | Assigned | LEVEL 3 TELECOM OF NEW YORK, LP - NY | 8473 | FAYETTEVL | NY |
| 2004-09-16 | 315-226-1XXX | 1000–1999 | Assigned | LEVEL 3 TELECOM OF NEW YORK, LP - NY | 8473 | NEWARK | NY |
| 2004-03-30 | 315-966-9XXX | 9000–9999 | Assigned | LEVEL 3 TELECOM OF NEW YORK, LP - NY | 8473 | MACEDON | NY |
| 2003-08-11 | 315-409-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF NEW YORK, LP - NY | 8473 | LIVERPOOL | NY |
| 2003-08-06 | 315-214-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF NEW YORK, LP - NY | 8473 | SYRACUSE | NY |
| 2001-05-02 | 315-759-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF NEW YORK, LP - NY | 8473 | GENEVA | NY |
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.