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 339
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2009-08-11 | 339-237-9XXX | 9000–9999 | Assigned | YMAX COMMUNICATIONS CORP. - MA | 316E | CANTON | MA |
| 2009-08-11 | 339-645-5XXX | 5000–5999 | Assigned | YMAX COMMUNICATIONS CORP. - MA | 316E | WOBURN | MA |
| 2009-07-14 | 339-674-5XXX | 5000–5999 | Assigned | YMAX COMMUNICATIONS CORP. - MA | 316E | MEDFORD | MA |
| 2009-03-13 | 339-502-2XXX | 2000–2999 | Assigned | YMAX COMMUNICATIONS CORP. - MA | 316E | CANTON | MA |
| 2009-02-04 | 339-707-4XXX | 4000–4999 | Assigned | YMAX COMMUNICATIONS CORP. - MA | 316E | ARLINGTON | MA |
| 2008-06-19 | 339-230-1XXX | 1000–1999 | Assigned | YMAX COMMUNICATIONS CORP. - MA | 316E | SHARON | MA |
| 2008-04-25 | 339-645-4XXX | 4000–4999 | Assigned | YMAX COMMUNICATIONS CORP. - MA | 316E | WOBURN | MA |
| 2008-02-08 | 339-230-9XXX | 9000–9999 | Assigned | YMAX COMMUNICATIONS CORP. - MA | 316E | SHARON | MA |
| 2008-02-08 | 339-545-5XXX | 5000–5999 | Assigned | YMAX COMMUNICATIONS CORP. - MA | 316E | MEDFORD | MA |
| 2008-02-07 | 339-337-6XXX | 6000–6999 | Assigned | YMAX COMMUNICATIONS CORP. - MA | 316E | COHASSET | MA |
| 2008-02-07 | 339-502-3XXX | 3000–3999 | Assigned | YMAX COMMUNICATIONS CORP. - MA | 316E | CANTON | MA |
| 2008-02-07 | 339-707-3XXX | 3000–3999 | Assigned | YMAX COMMUNICATIONS CORP. - MA | 316E | ARLINGTON | MA |
| 2007-07-13 | 339-227-8XXX | 8000–8999 | Assigned | YMAX COMMUNICATIONS CORP. - MA | 316E | WOBURN | MA |
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.