NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/22/2026
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 712
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2023-04-05 | 712-543-4XXX | 4000–4999 | Assigned | BTC, INC. - IA | 156C | UNDERWOOD | IA |
| 2023-03-31 | 712-492-3XXX | 3000–3999 | Assigned | BTC, INC. - IA | 156C | OAKLAND | IA |
| 2023-03-31 | 712-863-4XXX | 4000–4999 | Assigned | BTC, INC. - IA | 156C | CARSON | IA |
| 2022-03-09 | 712-345-3XXX | 3000–3999 | Assigned | BTC, INC. - IA | 156C | NEMAHA | IA |
| 2022-03-09 | 712-487-2XXX | 2000–2999 | Assigned | BTC, INC. - IA | 156C | TREYNOR | IA |
| 2022-03-09 | 712-658-4XXX | 4000–4999 | Assigned | BTC, INC. - IA | 156C | HALBUR | IA |
| 2022-03-09 | 712-677-4XXX | 4000–4999 | Assigned | BTC, INC. - IA | 156C | VAIL | IA |
| 2022-03-09 | 712-683-4XXX | 4000–4999 | Assigned | BTC, INC. - IA | 156C | DEDHAM | IA |
| 2021-12-20 | 712-713-4XXX | 4000–4999 | Assigned | BTC, INC. - IA | 156C | COUNCILBLF | IA |
| 2021-04-21 | 712-399-4XXX | 4000–4999 | Assigned | BTC, INC. - IA | 156C | MALVERN | IA |
| 2021-04-21 | 712-409-4XXX | 4000–4999 | Assigned | BTC, INC. - IA | 156C | SILVERCITY | IA |
| 2021-04-21 | 712-512-4XXX | 4000–4999 | Assigned | BTC, INC. - IA | 156C | MINEOLA | IA |
| 2020-03-18 | 712-688-3XXX | 3000–3999 | Assigned | BTC, INC. - IA | 156C | AUBURN | IA |
| 2019-02-07 | 712-521-3XXX | 3000–3999 | Assigned | BTC, INC. - IA | 156C | GLENWOOD | IA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.