NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 931
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2023-04-10 | 931-921-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | CROSSVILLE | TN |
| 2022-10-19 | 931-356-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | MCMINNVL | TN |
| 2022-09-20 | 931-207-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | PULASKI | TN |
| 2022-07-12 | 931-297-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | FAYETTEVL | TN |
| 2022-06-14 | 931-366-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | COOKEVL SO | TN |
| 2022-04-21 | 931-431-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | SOOAKGROVE | TN |
| 2022-04-13 | 931-341-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | COOKEVL SO | TN |
| 2022-03-02 | 931-341-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | COOKEVL SO | TN |
| 2022-03-02 | 931-355-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | SOOAKGROVE | TN |
| 2022-02-18 | 931-341-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | COOKEVL SO | TN |
| 2022-02-03 | 931-350-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | COLUMBIA | TN |
| 2022-01-07 | 931-341-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | COOKEVL SO | TN |
| 2022-01-07 | 931-341-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | COOKEVL SO | TN |
| 2022-01-07 | 931-355-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | SOOAKGROVE | TN |
| 2022-01-07 | 931-355-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | SOOAKGROVE | TN |
| 2022-01-06 | 931-280-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | BAXTER | TN |
| 2022-01-06 | 931-280-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | BAXTER | TN |
| 2021-12-14 | 931-677-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | SANGO | TN |
| 2021-12-14 | 931-677-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SANGO | TN |
| 2021-11-23 | 931-356-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | MCMINNVL | TN |
| 2021-11-23 | 931-356-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | MCMINNVL | TN |
| 2021-04-14 | 931-226-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | PULASKI | TN |
| 2021-04-14 | 931-928-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | TULLAHOMA | TN |
| 2021-04-13 | 931-251-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | FAYETTEVL | TN |
| 2021-04-13 | 931-710-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | CROSSVILLE | TN |
| 2021-02-16 | 931-553-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | CLARKSVL | TN |
| 2019-09-06 | 931-280-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | BAXTER | TN |
| 2019-04-17 | 931-355-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SOOAKGROVE | TN |
| 2018-03-15 | 931-341-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | COOKEVL SO | TN |
| 2017-12-20 | 931-401-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | CLARKSVL | TN |
| 2017-03-01 | 931-291-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | CLARKSVL | TN |
| 2017-02-08 | 931-291-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | CLARKSVL | TN |
| 2017-02-08 | 931-536-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | SHELBYVL | TN |
| 2016-06-30 | 931-263-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | CLARKSVL | TN |
| 2016-04-22 | 931-255-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | BAXTER | TN |
| 2015-06-01 | 931-771-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | SOOAKGROVE | TN |
| 2015-06-01 | 931-820-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | SANGO | TN |
| 2015-03-06 | 931-401-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | CLARKSVL | TN |
| 2015-03-02 | 931-384-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | COLUMBIA | TN |
| 2015-03-02 | 931-384-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | COLUMBIA | TN |
| 2015-03-02 | 931-384-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | COLUMBIA | TN |
| 2015-03-02 | 931-384-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | COLUMBIA | TN |
| 2015-02-27 | 931-218-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | CLARKSVL | TN |
| 2015-02-27 | 931-218-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | CLARKSVL | TN |
| 2014-07-02 | 931-304-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | MCMINNVL | TN |
| 2014-07-02 | 931-304-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | MCMINNVL | TN |
| 2012-05-22 | 931-896-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | CLARKSVL | TN |
| 2012-04-18 | 931-400-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | COOKEVILLE | TN |
| 2012-03-28 | 931-384-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | COLUMBIA | TN |
| 2012-01-30 | 931-800-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | TULLAHOMA | TN |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.