NumberResearchRecent thousands-block assignments
13 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 423
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 |
|---|---|---|---|---|---|---|---|
| 2024-07-03 | 423-919-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | NEWTAZWELL | TN |
| 2024-07-03 | 423-919-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | NEWTAZWELL | TN |
| 2024-07-01 | 423-203-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHATTNOOGA | TN |
| 2024-06-25 | 423-729-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | FLCRKFALLS | TN |
| 2024-06-07 | 423-889-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | CLEVELAND | TN |
| 2024-06-07 | 423-951-7XXX | 7000–7999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHARLESTON | TN |
| 2024-06-07 | 423-951-8XXX | 8000–8999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHARLESTON | TN |
| 2024-06-07 | 423-951-9XXX | 9000–9999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHARLESTON | TN |
| 2024-05-29 | 423-656-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | JOHNSON CY | TN |
| 2024-05-16 | 423-906-2XXX | 2000–2999 | Assigned | NUSO, LLC | 478J | JOHNSON CY | TN |
| 2024-05-16 | 423-906-3XXX | 3000–3999 | Assigned | NUSO, LLC | 478J | JOHNSON CY | TN |
| 2024-05-15 | 423-936-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | SUNBRIGHT | TN |
| 2024-05-15 | 423-941-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | DEER LODGE | TN |
| 2024-05-14 | 423-363-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | HUNTSVILLE | TN |
| 2024-05-14 | 423-701-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | ROBBINS | TN |
| 2024-05-07 | 423-889-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CLEVELAND | TN |
| 2024-05-07 | 423-889-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CLEVELAND | TN |
| 2024-05-07 | 423-889-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CLEVELAND | TN |
| 2024-05-02 | 423-649-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | ATHENS | TN |
| 2024-04-25 | 423-831-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | GREENEVL | TN |
| 2024-04-24 | 423-898-4XXX | 4000–4999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHARLESTON | TN |
| 2024-04-24 | 423-898-5XXX | 5000–5999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHARLESTON | TN |
| 2024-04-24 | 423-898-6XXX | 6000–6999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHARLESTON | TN |
| 2024-04-22 | 423-782-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | KINGSPORT | TN |
| 2024-04-22 | 423-782-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | KINGSPORT | TN |
| 2024-04-18 | 423-249-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FORK RIDGE | TN |
| 2024-04-18 | 423-441-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CUMBERLDGP | TN |
| 2024-04-05 | 423-398-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | KINGSPORT | TN |
| 2024-04-05 | 423-518-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | ELIZABTHTN | TN |
| 2024-03-13 | 423-375-6XXX | 6000–6999 | Assigned | TWIN LAKES COMMUNICATIONS, INC. - TN | 204G | BENTON | TN |
| 2024-03-07 | 423-801-3XXX | 3000–3999 | Assigned | POWERTEL KENTUCKY LICENSES, INC. | 365C | CUMBERLDGP | TN |
| 2024-03-07 | 423-869-1XXX | 1000–1999 | Assigned | POWERTEL KENTUCKY LICENSES, INC. | 365C | CUMBERLDGP | TN |
| 2024-03-04 | 423-898-0XXX | 0000–0999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHARLESTON | TN |
| 2024-03-04 | 423-898-3XXX | 3000–3999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHARLESTON | TN |
| 2024-03-01 | 423-679-5XXX | 5000–5999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | OOLTEWAH | TN |
| 2024-02-27 | 423-749-2XXX | 2000–2999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | COLLEGEDL | TN |
| 2024-02-27 | 423-749-4XXX | 4000–4999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | COLLEGEDL | TN |
| 2024-02-27 | 423-858-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | BLOUNTVL | TN |
| 2024-02-27 | 423-858-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | BLOUNTVL | TN |
| 2024-02-27 | 423-858-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | BLOUNTVL | TN |
| 2024-02-26 | 423-420-7XXX | 7000–7999 | Assigned | POWERTEL NASHVILLE LICENSES, INC. | 7476 | MADISONVL | TN |
| 2024-02-26 | 423-520-2XXX | 2000–2999 | Assigned | POWERTEL NASHVILLE LICENSES, INC. | 7476 | MADISONVL | TN |
| 2024-02-26 | 423-577-3XXX | 3000–3999 | Assigned | POWERTEL NASHVILLE LICENSES, INC. | 7476 | ONEIDA | TN |
| 2024-02-26 | 423-577-4XXX | 4000–4999 | Assigned | POWERTEL NASHVILLE LICENSES, INC. | 7476 | ONEIDA | TN |
| 2024-02-26 | 423-925-3XXX | 3000–3999 | Assigned | POWERTEL NASHVILLE LICENSES, INC. | 7476 | LAFOLLETTE | TN |
| 2024-02-26 | 423-925-4XXX | 4000–4999 | Assigned | POWERTEL NASHVILLE LICENSES, INC. | 7476 | LAFOLLETTE | TN |
| 2024-02-26 | 423-925-8XXX | 8000–8999 | Assigned | POWERTEL NASHVILLE LICENSES, INC. | 7476 | LAFOLLETTE | TN |
| 2024-02-22 | 423-577-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | ONEIDA | TN |
| 2024-02-21 | 423-449-2XXX | 2000–2999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | LAFOLLETTE | TN |
| 2024-02-21 | 423-561-7XXX | 7000–7999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | SWEETWATER | TN |
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.