NumberResearchRecent thousands-block assignments
4 blocks assigned in October 2025 · 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, October 2025 — NPA 620
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-10-20 | 620-580-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - KS | 6267 | PARSONS | KS |
| 2025-10-09 | 620-710-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS | 6532 | SEDAN | KS |
| 2025-10-01 | 620-612-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | GARDENCITY | KS |
| 2025-10-01 | 620-612-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | GARDENCITY | KS |
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.