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 620
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-03-16 | 620-795-6XXX | 6000–6999 | Assigned | MCC TELEPHONY LLC | 593K | OSWEGO | KS |
| 2019-07-12 | 620-678-6XXX | 6000–6999 | Assigned | MCC TELEPHONY LLC | 593K | HAMILTON | KS |
| 2019-07-12 | 620-953-3XXX | 3000–3999 | Assigned | MCC TELEPHONY LLC | 593K | EUREKA | KS |
| 2016-12-07 | 620-203-4XXX | 4000–4999 | Assigned | MCC TELEPHONY LLC | 593K | BURLINGTON | KS |
| 2016-11-28 | 620-256-9XXX | 9000–9999 | Assigned | MCC TELEPHONY LLC | 593K | LEBO | KS |
| 2016-11-22 | 620-472-1XXX | 1000–1999 | Assigned | MCC TELEPHONY LLC | 593K | GRIDLEY | KS |
| 2016-11-22 | 620-526-1XXX | 1000–1999 | Assigned | MCC TELEPHONY LLC | 593K | LEROY | KS |
| 2010-08-06 | 620-383-1XXX | 1000–1999 | Assigned | MCC TELEPHONY LLC | 593K | GALENA | 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.