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 516
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2021-03-01 | 516-786-9XXX | 9000–9999 | Assigned | UCOMTEL INC. | 534J | NASSAUZN03 | NY |
| 2021-02-17 | 516-879-1XXX | 1000–1999 | Assigned | UCOMTEL INC. | 534J | NASSAUZN05 | NY |
| 2021-02-11 | 516-386-1XXX | 1000–1999 | Assigned | UCOMTEL INC. | 534J | NASSAUZN09 | NY |
| 2021-02-11 | 516-854-1XXX | 1000–1999 | Assigned | UCOMTEL INC. | 534J | NASSAUZN02 | NY |
| 2021-02-11 | 516-899-0XXX | 0000–0999 | Assigned | UCOMTEL INC. | 534J | NASSAUZN04 | NY |
| 2021-02-08 | 516-842-0XXX | 0000–0999 | Assigned | UCOMTEL INC. | 534J | NASSAUZN06 | NY |
| 2021-02-08 | 516-878-1XXX | 1000–1999 | Assigned | UCOMTEL INC. | 534J | NASSAUZN07 | NY |
| 2021-02-08 | 516-898-0XXX | 0000–0999 | Assigned | UCOMTEL INC. | 534J | NASSAUZN08 | NY |
| 2021-02-08 | 516-918-0XXX | 0000–0999 | Assigned | UCOMTEL INC. | 534J | NASSAUZN01 | NY |
| 2021-02-08 | 516-966-2XXX | 2000–2999 | Assigned | UCOMTEL INC. | 534J | COLDSPGHBR | 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.