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 213
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-03-24 | 213-436-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 10 | CA |
| 2015-03-24 | 213-436-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 10 | CA |
| 2015-03-24 | 213-436-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 10 | CA |
| 2015-03-24 | 213-436-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 10 | CA |
| 2015-03-17 | 213-357-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 10 | CA |
| 2015-03-17 | 213-357-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 10 | CA |
| 2015-03-17 | 213-357-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 10 | CA |
| 2015-03-17 | 213-357-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 10 | CA |
| 2015-03-17 | 213-357-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 10 | CA |
| 2015-03-17 | 213-357-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 10 | CA |
| 2015-03-12 | 213-357-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 10 | CA |
| 2015-03-12 | 213-357-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 10 | CA |
| 2015-03-12 | 213-357-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 10 | CA |
| 2015-03-12 | 213-357-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 10 | CA |
| 2015-03-06 | 213-298-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2015-03-06 | 213-298-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2015-03-06 | 213-298-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2015-03-06 | 213-335-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2015-03-06 | 213-352-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 10 | CA |
| 2015-03-03 | 213-352-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LSAN DA 10 | CA |
| 2015-02-27 | 213-335-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LSAN DA 01 | CA |
| 2015-02-27 | 213-335-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LSAN DA 01 | CA |
| 2015-02-26 | 213-352-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 10 | CA |
| 2015-02-18 | 213-699-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | LSAN DA 07 | CA |
| 2015-02-17 | 213-298-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | LSAN DA 01 | CA |
| 2015-02-09 | 213-298-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2015-02-09 | 213-298-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2015-02-09 | 213-298-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2015-02-09 | 213-298-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2015-02-09 | 213-298-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2015-02-09 | 213-298-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2015-02-09 | 213-352-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 10 | CA |
| 2015-02-09 | 213-352-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 10 | CA |
| 2015-02-05 | 213-292-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2015-02-05 | 213-292-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2015-02-02 | 213-275-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 07 | CA |
| 2015-01-16 | 213-352-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 10 | CA |
| 2015-01-16 | 213-352-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 10 | CA |
| 2015-01-09 | 213-257-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2015-01-09 | 213-257-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2015-01-09 | 213-257-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2015-01-09 | 213-257-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2015-01-09 | 213-352-1XXX | 1000–1999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LSAN DA 10 | CA |
| 2014-12-23 | 213-352-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 10 | CA |
| 2014-12-23 | 213-352-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 10 | CA |
| 2014-11-25 | 213-335-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | LSAN DA 01 | CA |
| 2014-11-20 | 213-378-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 10 | CA |
| 2014-11-20 | 213-378-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 10 | CA |
| 2014-11-20 | 213-378-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 10 | CA |
| 2014-11-20 | 213-378-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 10 | 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.