NumberResearchRecent thousands-block assignments
13 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 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 |
|---|---|---|---|---|---|---|---|
| 2022-04-21 | 423-759-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TN | 525E | MORRISTOWN | TN |
| 2022-04-20 | 423-740-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CLEVELAND | TN |
| 2022-04-15 | 423-564-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | ROGERSVL | TN |
| 2022-04-07 | 423-738-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2022-04-07 | 423-738-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2022-04-07 | 423-738-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2022-04-07 | 423-738-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2022-04-07 | 423-738-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2022-04-07 | 423-804-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2022-04-07 | 423-804-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2022-04-07 | 423-804-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2022-04-07 | 423-804-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2022-04-07 | 423-804-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2022-03-23 | 423-925-5XXX | 5000–5999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | LAFOLLETTE | TN |
| 2022-03-21 | 423-696-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TN | 525E | ROGERSVL | TN |
| 2022-03-21 | 423-696-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | ROGERSVL | TN |
| 2022-03-14 | 423-456-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | LAFOLLETTE | TN |
| 2022-03-13 | 423-740-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CLEVELAND | TN |
| 2022-03-08 | 423-696-0XXX | 0000–0999 | Assigned | TWIN LAKES COMMUNICATIONS, INC. - TN | 204G | ROGERSVL | TN |
| 2022-03-08 | 423-759-1XXX | 1000–1999 | Assigned | TWIN LAKES COMMUNICATIONS, INC. - TN | 204G | MORRISTOWN | TN |
| 2022-03-07 | 423-696-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | ROGERSVL | TN |
| 2022-03-01 | 423-927-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | MORRISTOWN | TN |
| 2022-02-25 | 423-546-5XXX | 5000–5999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | BULLS GAP | TN |
| 2022-02-25 | 423-724-3XXX | 3000–3999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | SNEEDVILLE | TN |
| 2022-02-18 | 423-633-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHATTNOOGA | TN |
| 2022-02-18 | 423-633-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHATTNOOGA | TN |
| 2022-02-18 | 423-922-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | BAILEYTON | TN |
| 2022-02-17 | 423-749-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | COLLEGEDL | TN |
| 2022-02-16 | 423-705-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | JOHNSON CY | TN |
| 2022-02-16 | 423-705-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | JOHNSON CY | TN |
| 2022-02-11 | 423-769-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | BENTON | TN |
| 2022-02-06 | 423-750-6XXX | 6000–6999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHATTNOOGA | TN |
| 2022-02-06 | 423-750-7XXX | 7000–7999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHATTNOOGA | TN |
| 2022-02-06 | 423-750-8XXX | 8000–8999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHATTNOOGA | TN |
| 2022-02-06 | 423-750-9XXX | 9000–9999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHATTNOOGA | TN |
| 2022-02-03 | 423-203-9XXX | 9000–9999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHATTNOOGA | TN |
| 2022-02-03 | 423-804-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | BRISTOL | TN |
| 2022-02-03 | 423-804-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | BRISTOL | TN |
| 2022-02-01 | 423-796-9XXX | 9000–9999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | JOHNSON CY | TN |
| 2022-01-27 | 423-766-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | LIMESTONE | TN |
| 2022-01-27 | 423-922-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | BAILEYTON | TN |
| 2022-01-26 | 423-287-5XXX | 5000–5999 | Assigned | ELECTRIC POWER BOARD OF CHATTANOOGA | 4645 | CHATTNOOGA | TN |
| 2022-01-26 | 423-287-6XXX | 6000–6999 | Assigned | ELECTRIC POWER BOARD OF CHATTANOOGA | 4645 | CHATTNOOGA | TN |
| 2022-01-25 | 423-740-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CLEVELAND | TN |
| 2022-01-21 | 423-853-8XXX | 8000–8999 | Assigned | TWILIO INTERNATIONAL, INC. | 506J | JOHNSON CY | TN |
| 2022-01-20 | 423-932-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | ETOWAH | TN |
| 2022-01-13 | 423-832-4XXX | 4000–4999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | CLINCHPORT | TN |
| 2022-01-09 | 423-446-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | FALLBRANCH | TN |
| 2022-01-09 | 423-446-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | FALLBRANCH | TN |
| 2022-01-09 | 423-672-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | JOHNSON CY | TN |
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.