NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/22/2026
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 336
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2018-08-03 | 336-281-1XXX | 1000–1999 | Assigned | RIVERSTREET COMMUNICATIONS OF NO CAROLINA - NC | 769H | QUAKER GAP | NC |
| 2018-08-03 | 336-606-9XXX | 9000–9999 | Assigned | RIVERSTREET COMMUNICATIONS OF NO CAROLINA - NC | 769H | SANDYRIDGE | NC |
| 2018-08-03 | 336-916-8XXX | 8000–8999 | Assigned | RIVERSTREET COMMUNICATIONS OF NO CAROLINA - NC | 769H | MADISON | NC |
| 2018-05-02 | 336-642-8XXX | 8000–8999 | Assigned | RIVERSTREET COMMUNICATIONS OF NO CAROLINA - NC | 769H | RURAL HALL | NC |
| 2017-10-09 | 336-827-1XXX | 1000–1999 | Assigned | RIVERSTREET COMMUNICATIONS OF NO CAROLINA - NC | 769H | STATE ROAD | NC |
| 2017-06-27 | 336-960-1XXX | 1000–1999 | Assigned | RIVERSTREET COMMUNICATIONS OF NO CAROLINA - NC | 769H | LEXINGTON | NC |
| 2017-03-03 | 336-296-0XXX | 0000–0999 | Assigned | RIVERSTREET COMMUNICATIONS OF NO CAROLINA - NC | 769H | KING | NC |
| 2017-03-03 | 336-536-9XXX | 9000–9999 | Assigned | RIVERSTREET COMMUNICATIONS OF NO CAROLINA - NC | 769H | WALNUTCOVE | NC |
| 2017-03-03 | 336-914-9XXX | 9000–9999 | Assigned | RIVERSTREET COMMUNICATIONS OF NO CAROLINA - NC | 769H | DANBURY | NC |
| 2016-03-08 | 336-571-1XXX | 1000–1999 | Assigned | RIVERSTREET COMMUNICATIONS OF NO CAROLINA - NC | 769H | ELKIN | NC |
| 2016-03-08 | 336-660-1XXX | 1000–1999 | Assigned | RIVERSTREET COMMUNICATIONS OF NO CAROLINA - NC | 769H | GREENSBORO | NC |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.