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 605
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2021-01-29 | 605-316-4XXX | 4000–4999 | Assigned | VALLEY COMMUNICATIONS, INC. D/B/A VALLEY FIBERCOM | 363J | IROQUOIS | SD |
| 2020-08-21 | 605-534-5XXX | 5000–5999 | Assigned | VALLEY COMMUNICATIONS, INC. D/B/A VALLEY FIBERCOM | 363J | FLANDREAU | SD |
| 2019-08-26 | 605-525-2XXX | 2000–2999 | Assigned | VALLEY COMMUNICATIONS, INC. D/B/A VALLEY FIBERCOM | 363J | LK PRESTON | SD |
| 2019-08-26 | 605-860-2XXX | 2000–2999 | Assigned | VALLEY COMMUNICATIONS, INC. D/B/A VALLEY FIBERCOM | 363J | DE SMET | SD |
| 2019-08-13 | 605-315-2XXX | 2000–2999 | Assigned | VALLEY COMMUNICATIONS, INC. D/B/A VALLEY FIBERCOM | 363J | ARLINGTON | SD |
| 2018-12-06 | 605-827-2XXX | 2000–2999 | Assigned | VALLEY COMMUNICATIONS, INC. D/B/A VALLEY FIBERCOM | 363J | VOLGA | SD |
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.