NumberResearchRecent thousands-block assignments
2 blocks assigned in February 2026 · from the daily NANPA thousands-block report, 09/18/2026
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, February 2026
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| Assigned | Block | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 2026-02-19 | 603-501-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PORTSMOUTH | NH |
| 2026-02-19 | 840-288-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | S BERNDINO | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/18/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.