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 |
|---|---|---|---|---|---|---|---|
| 2025-08-22 | 520-680-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | BISBEE | AZ |
| 2025-08-22 | 520-896-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | SAN MANUEL | AZ |
| 2025-08-12 | 520-434-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | TUCSON | AZ |
| 2025-08-07 | 520-522-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CASABLANCA | AZ |
| 2025-08-07 | 520-644-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | KOMATKE | AZ |
| 2025-08-07 | 520-755-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LONE BUTTE | AZ |
| 2025-08-07 | 520-762-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TUCSON | AZ |
| 2025-07-28 | 520-735-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SIERRAVIST | AZ |
| 2025-07-11 | 520-763-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CASAGRANDE | AZ |
| 2025-07-11 | 520-763-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CASAGRANDE | AZ |
| 2025-07-11 | 520-763-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CASAGRANDE | AZ |
| 2025-07-03 | 520-949-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SANTA ROSA | AZ |
| 2025-06-26 | 520-588-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CASCABEL | AZ |
| 2025-06-26 | 520-676-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WILLCOX | AZ |
| 2025-06-26 | 520-823-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SASABE | AZ |
| 2025-06-26 | 520-899-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MARCOPAVLG | AZ |
| 2025-06-26 | 520-966-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SILVERBELL | AZ |
| 2025-06-17 | 520-757-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | CASAGRANDE | AZ |
| 2025-06-17 | 520-757-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | CASAGRANDE | AZ |
| 2025-06-17 | 520-757-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | CASAGRANDE | AZ |
| 2025-06-02 | 520-757-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | CASAGRANDE | AZ |
| 2025-06-02 | 520-757-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CASAGRANDE | AZ |
| 2025-06-02 | 520-757-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CASAGRANDE | AZ |
| 2025-06-02 | 520-757-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CASAGRANDE | AZ |
| 2025-05-09 | 520-702-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DOUGLAS | AZ |
| 2025-04-18 | 520-801-1XXX | 1000–1999 | Assigned | WIDE VOICE, LLC - AZ | 410H | TUCSON | AZ |
| 2025-03-25 | 520-757-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CASAGRANDE | AZ |
| 2025-03-25 | 520-757-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CASAGRANDE | AZ |
| 2025-03-25 | 520-757-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CASAGRANDE | AZ |
| 2025-03-18 | 520-756-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TUCSON | AZ |
| 2025-03-18 | 520-756-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TUCSON | AZ |
| 2025-03-18 | 520-756-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TUCSON | AZ |
| 2025-03-18 | 520-756-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TUCSON | AZ |
| 2025-03-18 | 520-756-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TUCSON | AZ |
| 2025-03-18 | 520-756-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TUCSON | AZ |
| 2025-03-18 | 520-756-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TUCSON | AZ |
| 2025-03-18 | 520-756-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TUCSON | AZ |
| 2025-03-18 | 520-756-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TUCSON | AZ |
| 2025-03-18 | 520-756-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TUCSON | AZ |
| 2025-03-11 | 520-656-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | WILLCOX | AZ |
| 2025-03-10 | 520-660-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CASAGRANDE | AZ |
| 2025-03-10 | 520-752-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CASAGRANDE | AZ |
| 2025-03-10 | 520-752-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CASAGRANDE | AZ |
| 2025-03-10 | 520-752-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CASAGRANDE | AZ |
| 2025-03-10 | 520-752-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CASAGRANDE | AZ |
| 2025-03-10 | 520-752-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CASAGRANDE | AZ |
| 2025-02-14 | 520-754-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | SACATON | AZ |
| 2025-02-04 | 520-686-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | BENSON | AZ |
| 2025-01-31 | 520-753-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | TUCSON | AZ |
| 2025-01-31 | 520-753-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | TUCSON | 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.