NumberResearchRecent thousands-block assignments
5 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, last 30 days — NPA 520
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 |
|---|---|---|---|---|---|---|---|
| 2026-09-18 | 520-767-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CASAGRANDE | AZ |
| 2026-09-18 | 520-767-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CASAGRANDE | AZ |
| 2026-09-18 | 520-767-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CASAGRANDE | AZ |
| 2026-09-04 | 520-735-7XXX | 7000–7999 | Assigned | INTRADO COMMUNICATIONS, LLC | 890G | SIERRAVIST | AZ |
| 2026-09-04 | 520-765-7XXX | 7000–7999 | Assigned | INTRADO COMMUNICATIONS, LLC | 890G | CASAGRANDE | AZ |
| 2026-08-19 | 520-479-0XXX | 0000–0999 | Assigned | INTRADO COMMUNICATIONS, LLC | 890G | TUCSON | AZ |
| 2026-08-19 | 520-571-5XXX | 5000–5999 | Assigned | INTRADO COMMUNICATIONS, LLC | 890G | TUCSON | AZ |
| 2026-08-19 | 520-594-3XXX | 3000–3999 | Assigned | INTRADO COMMUNICATIONS, LLC | 890G | TUCSON | AZ |
| 2026-07-24 | 520-368-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF ARIZONA, LLC - AZ | 579F | DOUGLAS | AZ |
| 2026-07-24 | 520-924-5XXX | 5000–5999 | Assigned | PEERLESS NETWORK OF ARIZONA, LLC - AZ | 579F | NOGALES | AZ |
| 2026-07-20 | 520-767-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CASAGRANDE | AZ |
| 2026-06-05 | 520-265-9XXX | 9000–9999 | Assigned | AHOI LLC | 883K | BENSON | AZ |
| 2026-06-05 | 520-805-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DOUGLAS | AZ |
| 2026-06-02 | 520-767-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | CASAGRANDE | AZ |
| 2026-06-02 | 520-767-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | CASAGRANDE | AZ |
| 2026-04-28 | 520-438-2XXX | 2000–2999 | Assigned | AHOI LLC | 883K | WHITLOW | AZ |
| 2026-04-28 | 520-536-7XXX | 7000–7999 | Assigned | AHOI LLC | 883K | DOUGLAS | AZ |
| 2026-04-27 | 520-754-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | SACATON | AZ |
| 2026-04-03 | 520-765-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CASAGRANDE | AZ |
| 2026-04-03 | 520-767-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CASAGRANDE | AZ |
| 2026-04-03 | 520-767-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CASAGRANDE | AZ |
| 2026-03-20 | 520-753-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | TUCSON | AZ |
| 2026-03-20 | 520-753-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | TUCSON | AZ |
| 2026-03-20 | 520-801-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | TUCSON | AZ |
| 2026-03-20 | 520-801-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | TUCSON | AZ |
| 2026-03-20 | 520-802-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | TUCSON | AZ |
| 2026-03-20 | 520-802-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | TUCSON | AZ |
| 2026-03-09 | 520-922-2XXX | 2000–2999 | Assigned | AHOI LLC | 883K | TUCSON | AZ |
| 2026-03-06 | 520-234-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SIERRAVIST | AZ |
| 2026-02-23 | 520-765-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - AZ | 587F | CASAGRANDE | AZ |
| 2026-02-02 | 520-765-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CASAGRANDE | AZ |
| 2026-02-02 | 520-765-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CASAGRANDE | AZ |
| 2026-01-14 | 520-652-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WHITLOW | AZ |
| 2026-01-09 | 520-764-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CASAGRANDE | AZ |
| 2026-01-09 | 520-765-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CASAGRANDE | AZ |
| 2025-12-22 | 520-394-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | NOGALES | AZ |
| 2025-12-12 | 520-676-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | WILLCOX | AZ |
| 2025-12-08 | 520-764-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CASAGRANDE | AZ |
| 2025-12-08 | 520-764-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CASAGRANDE | AZ |
| 2025-12-08 | 520-823-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SASABE | AZ |
| 2025-11-26 | 520-753-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | TUCSON | AZ |
| 2025-11-26 | 520-753-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | TUCSON | AZ |
| 2025-11-26 | 520-764-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | CASAGRANDE | AZ |
| 2025-11-26 | 520-764-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | CASAGRANDE | AZ |
| 2025-11-25 | 520-594-8XXX | 8000–8999 | Assigned | WAVENATION, LLC | 700J | TUCSON | AZ |
| 2025-11-07 | 520-753-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | TUCSON | AZ |
| 2025-11-07 | 520-753-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | TUCSON | AZ |
| 2025-11-07 | 520-753-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | TUCSON | AZ |
| 2025-10-28 | 520-763-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CASAGRANDE | AZ |
| 2025-10-28 | 520-764-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CASAGRANDE | AZ |
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.