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 |
|---|---|---|---|---|---|---|---|
| 2024-02-21 | 423-792-0XXX | 0000–0999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | OAKDALE | TN |
| 2024-02-21 | 423-898-2XXX | 2000–2999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHARLESTON | TN |
| 2024-02-06 | 423-220-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ERWIN | TN |
| 2024-02-06 | 423-354-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BLOUNTVL | TN |
| 2024-02-06 | 423-389-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MIDWAY SUL | TN |
| 2024-02-06 | 423-391-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BLUFF CITY | TN |
| 2024-02-06 | 423-446-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FALLBRANCH | TN |
| 2024-02-06 | 423-460-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MOUNTAINCY | TN |
| 2024-02-06 | 423-678-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ROAN MT | TN |
| 2024-02-06 | 423-692-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BUTLER | TN |
| 2024-02-06 | 423-868-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MOSHEIM | TN |
| 2024-02-06 | 423-873-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | STONEY CRK | TN |
| 2024-02-06 | 423-957-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HAMPTON | TN |
| 2024-02-01 | 423-576-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | ELIZABTHTN | TN |
| 2024-02-01 | 423-576-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | ELIZABTHTN | TN |
| 2024-02-01 | 423-576-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | ELIZABTHTN | TN |
| 2024-01-15 | 423-889-7XXX | 7000–7999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CLEVELAND | TN |
| 2024-01-15 | 423-898-7XXX | 7000–7999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHARLESTON | TN |
| 2024-01-15 | 423-898-8XXX | 8000–8999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHARLESTON | TN |
| 2024-01-11 | 423-307-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MORRISTOWN | TN |
| 2024-01-11 | 423-523-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BULLS GAP | TN |
| 2024-01-09 | 423-906-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | JOHNSON CY | TN |
| 2024-01-09 | 423-906-7XXX | 7000–7999 | Assigned | COMMIO, LLC | 939H | JOHNSON CY | TN |
| 2024-01-09 | 423-906-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | JOHNSON CY | TN |
| 2024-01-09 | 423-906-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | JOHNSON CY | TN |
| 2024-01-09 | 423-908-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | SURGOINSVL | TN |
| 2024-01-09 | 423-908-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | SURGOINSVL | TN |
| 2024-01-09 | 423-932-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | ETOWAH | TN |
| 2024-01-09 | 423-932-4XXX | 4000–4999 | Assigned | COMMIO, LLC | 939H | ETOWAH | TN |
| 2024-01-09 | 423-939-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | JASPER | TN |
| 2024-01-09 | 423-980-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | CHATTNOOGA | TN |
| 2024-01-09 | 423-980-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | CHATTNOOGA | TN |
| 2024-01-09 | 423-980-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | CHATTNOOGA | TN |
| 2024-01-08 | 423-859-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TN | 525E | ROGERSVL | TN |
| 2024-01-08 | 423-999-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ATHENS | TN |
| 2024-01-05 | 423-419-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CUMBERLDGP | TN |
| 2023-12-28 | 423-352-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | LAFOLLETTE | TN |
| 2023-12-22 | 423-841-3XXX | 3000–3999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | MOUNTAINCY | TN |
| 2023-12-15 | 423-287-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TN | 525E | CHATTNOOGA | TN |
| 2023-12-07 | 423-631-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | JOHNSON CY | TN |
| 2023-12-07 | 423-906-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | JOHNSON CY | TN |
| 2023-12-06 | 423-656-9XXX | 9000–9999 | Assigned | NUSO, LLC | 478J | JOHNSON CY | TN |
| 2023-12-04 | 423-668-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CHATTNOOGA | TN |
| 2023-12-04 | 423-668-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CHATTNOOGA | TN |
| 2023-10-31 | 423-487-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | NEWPORT | TN |
| 2023-10-24 | 423-906-1XXX | 1000–1999 | Assigned | CALLWORKS CORPORATION | 475J | JOHNSON CY | TN |
| 2023-10-18 | 423-500-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ROGERSVL | TN |
| 2023-10-16 | 423-818-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | JELLICO | TN |
| 2023-10-12 | 423-898-9XXX | 9000–9999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHARLESTON | TN |
| 2023-10-11 | 423-829-8XXX | 8000–8999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHARLESTON | 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.