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 |
|---|---|---|---|---|---|---|---|
| 2023-01-11 | 423-932-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TN | 525E | ETOWAH | TN |
| 2023-01-10 | 423-440-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | ELIZABTHTN | TN |
| 2022-12-30 | 423-819-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CLEVELAND | TN |
| 2022-12-28 | 423-810-4XXX | 4000–4999 | Assigned | TELNYX LLC | 073H | CHARLESTON | TN |
| 2022-12-20 | 423-236-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | APISON | TN |
| 2022-12-19 | 423-694-6XXX | 6000–6999 | Assigned | POWERTEL NASHVILLE LICENSES, INC. | 7476 | SWEETWATER | TN |
| 2022-12-19 | 423-694-7XXX | 7000–7999 | Assigned | POWERTEL NASHVILLE LICENSES, INC. | 7476 | SWEETWATER | TN |
| 2022-12-19 | 423-694-8XXX | 8000–8999 | Assigned | POWERTEL NASHVILLE LICENSES, INC. | 7476 | SWEETWATER | TN |
| 2022-12-14 | 423-606-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ENGLEWOOD | TN |
| 2022-12-13 | 423-740-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CLEVELAND | TN |
| 2022-12-12 | 423-270-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | ERWIN | TN |
| 2022-12-12 | 423-686-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TN | 525E | FORK RIDGE | TN |
| 2022-12-08 | 423-203-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | CHATTNOOGA | TN |
| 2022-12-08 | 423-417-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | CHATTNOOGA | TN |
| 2022-12-08 | 423-417-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | CHATTNOOGA | TN |
| 2022-12-08 | 423-657-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TN | 525E | MOSHEIM | TN |
| 2022-12-08 | 423-703-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | COKERCREEK | TN |
| 2022-12-08 | 423-719-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | CHATTNOOGA | TN |
| 2022-12-08 | 423-719-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | CHATTNOOGA | TN |
| 2022-12-08 | 423-874-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | CHATTNOOGA | TN |
| 2022-12-08 | 423-874-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | CHATTNOOGA | TN |
| 2022-12-06 | 423-379-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | NEWPORT | TN |
| 2022-12-01 | 423-350-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2022-12-01 | 423-520-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | MADISONVL | TN |
| 2022-12-01 | 423-816-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2022-12-01 | 423-816-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2022-12-01 | 423-816-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2022-12-01 | 423-816-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2022-12-01 | 423-816-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2022-12-01 | 423-816-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2022-12-01 | 423-816-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2022-12-01 | 423-816-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2022-12-01 | 423-816-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2022-12-01 | 423-816-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2022-11-30 | 423-568-1XXX | 1000–1999 | Assigned | TWIN LAKES COMMUNICATIONS, INC. - TN | 204G | NIOTA | TN |
| 2022-11-30 | 423-730-8XXX | 8000–8999 | Assigned | TWIN LAKES COMMUNICATIONS, INC. - TN | 204G | RICEVILLE | TN |
| 2022-11-30 | 423-810-3XXX | 3000–3999 | Assigned | TWIN LAKES COMMUNICATIONS, INC. - TN | 204G | CHARLESTON | TN |
| 2022-11-30 | 423-932-0XXX | 0000–0999 | Assigned | TWIN LAKES COMMUNICATIONS, INC. - TN | 204G | ETOWAH | TN |
| 2022-11-29 | 423-203-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CHATTNOOGA | TN |
| 2022-11-29 | 423-513-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TN | 525E | VONORE | TN |
| 2022-11-29 | 423-583-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | SULIVNGDNS | TN |
| 2022-11-29 | 423-654-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CHATTNOOGA | TN |
| 2022-11-29 | 423-820-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TN | 525E | GREENEVL | TN |
| 2022-11-23 | 423-471-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | MOUNTAINCY | TN |
| 2022-11-23 | 423-589-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | GEORGETOWN | TN |
| 2022-11-23 | 423-885-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TN | 525E | ENGLEWOOD | TN |
| 2022-11-22 | 423-372-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | JELLICO | TN |
| 2022-11-22 | 423-932-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ETOWAH | TN |
| 2022-11-15 | 423-546-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | BULLS GAP | TN |
| 2022-11-15 | 423-583-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | SULIVNGDNS | 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.