NumberResearchRecent thousands-block assignments
9 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 928
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 |
|---|---|---|---|---|---|---|---|
| 2009-02-12 | 928-432-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | SAFFORD | AZ |
| 2009-02-12 | 928-750-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | YUMA | AZ |
| 2009-02-12 | 928-750-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | YUMA | AZ |
| 2009-02-11 | 928-315-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SOMERTON | AZ |
| 2009-02-06 | 928-287-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | YUMA | AZ |
| 2009-01-27 | 928-554-2XXX | 2000–2999 | Assigned | ONVOY, LLC - AZ | 630E | SEDONA | AZ |
| 2009-01-27 | 928-554-3XXX | 3000–3999 | Assigned | ONVOY, LLC - AZ | 630E | SEDONA | AZ |
| 2009-01-19 | 928-219-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | BULLHEADCY | AZ |
| 2009-01-19 | 928-287-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | YUMA | AZ |
| 2009-01-19 | 928-583-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PRESCOTT | AZ |
| 2009-01-08 | 928-864-0XXX | 0000–0999 | Assigned | ONVOY, LLC - AZ | 630E | FLAGSTAFF | AZ |
| 2008-12-04 | 928-575-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PARKER | AZ |
| 2008-11-25 | 928-287-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | YUMA | AZ |
| 2008-11-17 | 928-358-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AZ | 3285 | PINETOP | AZ |
| 2008-11-10 | 928-221-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FLAGSTAFF | AZ |
| 2008-11-10 | 928-276-9XXX | 9000–9999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | YUMA | AZ |
| 2008-10-30 | 928-255-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | FLAGSTAFF | AZ |
| 2008-10-30 | 928-642-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PRESCOTT | AZ |
| 2008-10-01 | 928-458-2XXX | 2000–2999 | Assigned | QWEST CORPORATION | 9636 | PRESCOTT | AZ |
| 2008-09-30 | 928-863-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | FLAGSTAFF | AZ |
| 2008-09-26 | 928-276-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | YUMA | AZ |
| 2008-09-26 | 928-642-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PRESCOTT | AZ |
| 2008-09-26 | 928-863-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | FLAGSTAFF | AZ |
| 2008-09-24 | 928-632-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PRESCOTT | AZ |
| 2008-08-28 | 928-276-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | YUMA | AZ |
| 2008-08-22 | 928-554-6XXX | 6000–6999 | Assigned | ONVOY, LLC - AZ | 630E | SEDONA | AZ |
| 2008-08-22 | 928-554-7XXX | 7000–7999 | Assigned | ONVOY, LLC - AZ | 630E | SEDONA | AZ |
| 2008-08-21 | 928-219-3XXX | 3000–3999 | Assigned | CITIZENS UTILITIES RURAL DBA FRONTIER UT RURAL | 2172 | BULLHEADCY | AZ |
| 2008-08-20 | 928-554-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | SEDONA | AZ |
| 2008-08-20 | 928-848-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PRESCOTT | AZ |
| 2008-08-13 | 928-286-8XXX | 8000–8999 | Assigned | ONVOY, LLC - AZ | 630E | FLAGSTAFF | AZ |
| 2008-08-12 | 928-263-5XXX | 5000–5999 | Assigned | CITIZENS UTILITIES RURAL DBA FRONTIER UT RURAL | 2172 | KINGMAN | AZ |
| 2008-07-28 | 928-358-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PINETOP | AZ |
| 2008-07-28 | 928-864-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | FLAGSTAFF | AZ |
| 2008-07-24 | 928-274-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SEDONA | AZ |
| 2008-07-08 | 928-247-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AZ | 3285 | YUMA | AZ |
| 2008-06-25 | 928-852-2XXX | 2000–2999 | Assigned | ONVOY, LLC - AZ | 630E | SEDONA | AZ |
| 2008-06-13 | 928-863-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | FLAGSTAFF | AZ |
| 2008-06-02 | 928-387-8XXX | 8000–8999 | Assigned | QWEST CORPORATION | 9636 | SAFFORD | AZ |
| 2008-05-30 | 928-276-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | YUMA | AZ |
| 2008-05-27 | 928-387-7XXX | 7000–7999 | Assigned | ONVOY, LLC - AZ | 630E | SAFFORD | AZ |
| 2008-05-27 | 928-473-5XXX | 5000–5999 | Assigned | ONVOY, LLC - AZ | 630E | GLOBE | AZ |
| 2008-05-27 | 928-485-5XXX | 5000–5999 | Assigned | ONVOY, LLC - AZ | 630E | PIMA | AZ |
| 2008-05-14 | 928-679-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FLAGSTAFF | AZ |
| 2008-05-07 | 928-478-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AZ | 3285 | PAYSON | AZ |
| 2008-05-06 | 928-239-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AZ | 3285 | SEDONA | AZ |
| 2008-05-06 | 928-444-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AZ | 3285 | BULLHEADCY | AZ |
| 2008-05-06 | 928-770-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AZ | 3285 | MOHAVE VLY | AZ |
| 2008-05-05 | 928-263-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AZ | 3285 | KINGMAN | AZ |
| 2008-05-02 | 928-358-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AZ | 3285 | PINETOP | AZ |
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.