NumberResearchRecent thousands-block assignments
1 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, last 30 days — NPA 323
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2007-03-13 | 323-681-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 03 | CA |
| 2007-03-13 | 323-999-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 03 | CA |
| 2007-03-06 | 323-303-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-03-06 | 323-378-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 14 | CA |
| 2007-03-01 | 323-643-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LSAN DA 11 | CA |
| 2007-02-22 | 323-213-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | MONTEBELLO | CA |
| 2007-02-22 | 323-213-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | MONTEBELLO | CA |
| 2007-02-22 | 323-213-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-02-22 | 323-409-1XXX | 1000–1999 | Assigned | PACIFIC BELL | 9740 | LSAN DA 04 | CA |
| 2007-02-22 | 323-409-2XXX | 2000–2999 | Assigned | PACIFIC BELL | 9740 | LSAN DA 04 | CA |
| 2007-02-22 | 323-409-3XXX | 3000–3999 | Assigned | PACIFIC BELL | 9740 | LSAN DA 04 | CA |
| 2007-02-22 | 323-409-4XXX | 4000–4999 | Assigned | PACIFIC BELL | 9740 | LSAN DA 04 | CA |
| 2007-02-22 | 323-409-5XXX | 5000–5999 | Assigned | PACIFIC BELL | 9740 | LSAN DA 04 | CA |
| 2007-02-22 | 323-409-6XXX | 6000–6999 | Assigned | PACIFIC BELL | 9740 | LSAN DA 04 | CA |
| 2007-02-22 | 323-409-7XXX | 7000–7999 | Assigned | PACIFIC BELL | 9740 | LSAN DA 04 | CA |
| 2007-02-22 | 323-409-8XXX | 8000–8999 | Assigned | PACIFIC BELL | 9740 | LSAN DA 04 | CA |
| 2007-02-21 | 323-332-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LSAN DA 04 | CA |
| 2007-02-21 | 323-354-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 05 | CA |
| 2007-02-21 | 323-617-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LSAN DA 13 | CA |
| 2007-02-13 | 323-399-4XXX | 4000–4999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-02-13 | 323-399-5XXX | 5000–5999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-02-13 | 323-399-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-02-13 | 323-399-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-02-13 | 323-399-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-02-13 | 323-399-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | MONTEBELLO | CA |
| 2007-02-12 | 323-378-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 14 | CA |
| 2007-02-07 | 323-338-3XXX | 3000–3999 | Assigned | CURATEL, LLC - CA | 993B | LSAN DA 02 | CA |
| 2007-02-07 | 323-596-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 12 | CA |
| 2007-02-06 | 323-213-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | MONTEBELLO | CA |
| 2007-02-06 | 323-652-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 09 | CA |
| 2007-02-06 | 323-652-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 09 | CA |
| 2007-01-31 | 323-698-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LSAN DA 14 | CA |
| 2007-01-26 | 323-571-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 13 | CA |
| 2007-01-25 | 323-441-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 04 | CA |
| 2007-01-25 | 323-649-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 11 | CA |
| 2007-01-22 | 323-354-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 05 | CA |
| 2007-01-22 | 323-354-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 05 | CA |
| 2007-01-16 | 323-213-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MONTEBELLO | CA |
| 2007-01-16 | 323-213-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MONTEBELLO | CA |
| 2007-01-16 | 323-873-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
| 2007-01-16 | 323-873-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
| 2007-01-16 | 323-873-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 14 | CA |
| 2007-01-11 | 323-405-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 04 | CA |
| 2007-01-09 | 323-241-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 09 | CA |
| 2007-01-09 | 323-241-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 09 | CA |
| 2007-01-09 | 323-354-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 05 | CA |
| 2007-01-09 | 323-600-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 09 | CA |
| 2007-01-05 | 323-348-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 12 | CA |
| 2007-01-05 | 323-348-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 12 | CA |
| 2007-01-05 | 323-873-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
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.