NumberResearchRecent thousands-block assignments
9 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 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 |
|---|---|---|---|---|---|---|---|
| 2010-02-08 | 928-515-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PRESCOTT | AZ |
| 2010-02-08 | 928-637-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | FLAGSTAFF | AZ |
| 2010-02-03 | 928-432-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | SAFFORD | AZ |
| 2010-02-03 | 928-792-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | SAFFORD | AZ |
| 2010-01-15 | 928-252-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | LKPLEASANT | AZ |
| 2010-01-11 | 928-750-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | YUMA | AZ |
| 2010-01-08 | 928-247-9XXX | 9000–9999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | YUMA | AZ |
| 2010-01-08 | 928-432-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | SAFFORD | AZ |
| 2009-12-14 | 928-750-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | YUMA | AZ |
| 2009-12-14 | 928-750-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | YUMA | AZ |
| 2009-12-03 | 928-224-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - AZ | 587F | WINSLOW | AZ |
| 2009-12-03 | 928-263-3XXX | 3000–3999 | Assigned | CITIZENS UTILITIES RURAL DBA FRONTIER UT RURAL | 2172 | KINGMAN | AZ |
| 2009-11-06 | 928-515-5XXX | 5000–5999 | Assigned | QWEST CORPORATION | 9636 | PRESCOTT | AZ |
| 2009-11-06 | 928-515-6XXX | 6000–6999 | Assigned | QWEST CORPORATION | 9636 | PRESCOTT | AZ |
| 2009-11-06 | 928-515-7XXX | 7000–7999 | Assigned | QWEST CORPORATION | 9636 | PRESCOTT | AZ |
| 2009-11-03 | 928-387-0XXX | 0000–0999 | Assigned | QWEST CORPORATION | 9636 | SAFFORD | AZ |
| 2009-10-22 | 928-432-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SAFFORD | AZ |
| 2009-10-12 | 928-387-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | SAFFORD | AZ |
| 2009-10-08 | 928-525-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | FLAGSTAFF | AZ |
| 2009-10-08 | 928-525-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | FLAGSTAFF | AZ |
| 2009-10-07 | 928-592-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | SEDONA | AZ |
| 2009-10-07 | 928-592-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | SEDONA | AZ |
| 2009-10-07 | 928-940-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PINETOP | AZ |
| 2009-10-06 | 928-575-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PARKER | AZ |
| 2009-10-06 | 928-642-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PRESCOTT | AZ |
| 2009-10-06 | 928-642-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PRESCOTT | AZ |
| 2009-10-06 | 928-961-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | GLOBE | AZ |
| 2009-09-23 | 928-302-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AZ | 3285 | LKHAVASUCY | AZ |
| 2009-09-17 | 928-714-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | FLAGSTAFF | AZ |
| 2009-09-03 | 928-203-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | SEDONA | AZ |
| 2009-09-03 | 928-220-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | FLAGSTAFF | AZ |
| 2009-09-03 | 928-358-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PINETOP | AZ |
| 2009-09-03 | 928-583-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PRESCOTT | AZ |
| 2009-09-03 | 928-592-5XXX | 5000–5999 | Assigned | ONVOY, LLC - AZ | 630E | SEDONA | AZ |
| 2009-08-11 | 928-642-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PRESCOTT | AZ |
| 2009-08-03 | 928-220-8XXX | 8000–8999 | Assigned | ONVOY, LLC - AZ | 630E | FLAGSTAFF | AZ |
| 2009-07-09 | 928-592-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | SEDONA | AZ |
| 2009-06-09 | 928-642-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PRESCOTT | AZ |
| 2009-05-15 | 928-522-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | FLAGSTAFF | AZ |
| 2009-05-15 | 928-750-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | YUMA | AZ |
| 2009-05-15 | 928-750-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | YUMA | AZ |
| 2009-05-15 | 928-750-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | YUMA | AZ |
| 2009-05-15 | 928-961-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | GLOBE | AZ |
| 2009-04-13 | 928-310-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | FLAGSTAFF | AZ |
| 2009-04-13 | 928-583-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | PRESCOTT | AZ |
| 2009-04-08 | 928-592-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | SEDONA | AZ |
| 2009-03-06 | 928-522-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | FLAGSTAFF | AZ |
| 2009-03-06 | 928-642-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PRESCOTT | AZ |
| 2009-03-06 | 928-750-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | YUMA | AZ |
| 2009-03-06 | 928-750-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | YUMA | 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.