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 |
|---|---|---|---|---|---|---|---|
| 2007-04-25 | 928-583-7XXX | 7000–7999 | Assigned | ONVOY, LLC - AZ | 630E | PRESCOTT | AZ |
| 2007-04-25 | 928-693-7XXX | 7000–7999 | Assigned | ONVOY, LLC - AZ | 630E | PAGE | AZ |
| 2007-04-25 | 928-863-7XXX | 7000–7999 | Assigned | ONVOY, LLC - AZ | 630E | FLAGSTAFF | AZ |
| 2007-04-19 | 928-276-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | YUMA | AZ |
| 2007-04-18 | 928-304-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | YUMA | AZ |
| 2007-04-17 | 928-358-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PINETOP | AZ |
| 2007-04-17 | 928-451-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | SEDONA | AZ |
| 2007-04-17 | 928-499-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PRESCOTT | AZ |
| 2007-04-13 | 928-219-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | BULLHEADCY | AZ |
| 2007-04-09 | 928-274-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SEDONA | AZ |
| 2007-04-09 | 928-637-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FLAGSTAFF | AZ |
| 2007-03-23 | 928-277-2XXX | 2000–2999 | Assigned | QWEST CORPORATION | 9636 | PRESCOTT | AZ |
| 2007-03-22 | 928-277-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PRESCOTT | AZ |
| 2007-03-19 | 928-277-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PRESCOTT | AZ |
| 2007-03-15 | 928-266-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | FLAGSTAFF | AZ |
| 2007-03-14 | 928-499-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PRESCOTT | AZ |
| 2007-03-09 | 928-276-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | YUMA | AZ |
| 2007-03-09 | 928-276-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | YUMA | AZ |
| 2007-03-09 | 928-276-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | YUMA | AZ |
| 2007-03-08 | 928-277-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | PRESCOTT | AZ |
| 2007-02-22 | 928-566-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | LKHAVASUCY | AZ |
| 2007-02-19 | 928-266-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | FLAGSTAFF | AZ |
| 2007-02-15 | 928-224-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AZ | 3285 | WINSLOW | AZ |
| 2007-02-09 | 928-304-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | YUMA | AZ |
| 2007-02-02 | 928-239-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AZ | 3285 | SEDONA | AZ |
| 2007-02-02 | 928-608-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AZ | 3285 | PAGE | AZ |
| 2007-01-24 | 928-266-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | FLAGSTAFF | AZ |
| 2007-01-24 | 928-287-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | YUMA | AZ |
| 2007-01-24 | 928-310-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | FLAGSTAFF | AZ |
| 2007-01-24 | 928-499-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PRESCOTT | AZ |
| 2007-01-24 | 928-848-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PRESCOTT | AZ |
| 2007-01-11 | 928-550-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SOMERTON | AZ |
| 2007-01-10 | 928-219-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | BULLHEADCY | AZ |
| 2006-12-27 | 928-252-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | LKPLEASANT | AZ |
| 2006-11-27 | 928-792-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SAFFORD | AZ |
| 2006-11-24 | 928-255-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FLAGSTAFF | AZ |
| 2006-11-24 | 928-377-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | KINGMAN | AZ |
| 2006-11-24 | 928-415-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AZ | 3285 | WICKENBURG | AZ |
| 2006-11-21 | 928-202-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | SEDONA | AZ |
| 2006-11-21 | 928-287-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | YUMA | AZ |
| 2006-11-21 | 928-499-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PRESCOTT | AZ |
| 2006-11-21 | 928-565-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | KINGMAN | AZ |
| 2006-11-16 | 928-255-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | FLAGSTAFF | AZ |
| 2006-11-16 | 928-255-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | FLAGSTAFF | AZ |
| 2006-11-13 | 928-404-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AZ | 3285 | BULLHDCYN | AZ |
| 2006-10-26 | 928-565-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | KINGMAN | AZ |
| 2006-10-25 | 928-303-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | KINGMAN | AZ |
| 2006-10-25 | 928-681-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | KINGMAN | AZ |
| 2006-10-16 | 928-432-4XXX | 4000–4999 | Assigned | QWEST CORPORATION | 9636 | SAFFORD | AZ |
| 2006-10-13 | 928-485-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AZ | 3285 | PIMA | 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.