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 |
|---|---|---|---|---|---|---|---|
| 2021-03-12 | 423-730-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TN | 525E | RICEVILLE | TN |
| 2021-03-12 | 423-730-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TN | 525E | RICEVILLE | TN |
| 2021-03-12 | 423-966-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TN | 525E | BALL PLAY | TN |
| 2021-03-08 | 423-214-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TN | 525E | ENGLEWOOD | TN |
| 2021-03-08 | 423-214-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | ENGLEWOOD | TN |
| 2021-03-08 | 423-597-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | BENTON | TN |
| 2021-03-08 | 423-597-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | BENTON | TN |
| 2021-02-22 | 423-546-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | BULLS GAP | TN |
| 2021-02-22 | 423-604-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | ETOWAH | TN |
| 2021-02-17 | 423-376-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | MADISONVL | TN |
| 2021-02-17 | 423-376-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | MADISONVL | TN |
| 2021-02-17 | 423-455-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | JELLICO | TN |
| 2021-02-17 | 423-456-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | LAFOLLETTE | TN |
| 2021-02-17 | 423-546-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | BULLS GAP | TN |
| 2021-02-17 | 423-546-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | BULLS GAP | TN |
| 2021-02-17 | 423-604-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | ETOWAH | TN |
| 2021-02-17 | 423-690-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TN | 525E | MORRISTOWN | TN |
| 2021-02-17 | 423-690-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TN | 525E | MORRISTOWN | TN |
| 2021-02-17 | 423-690-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | MORRISTOWN | TN |
| 2021-02-17 | 423-814-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | SWEETWATER | TN |
| 2021-02-17 | 423-814-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TN | 525E | SWEETWATER | TN |
| 2021-02-17 | 423-919-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TN | 525E | NEWTAZWELL | TN |
| 2021-02-17 | 423-919-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TN | 525E | NEWTAZWELL | TN |
| 2021-02-16 | 423-407-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | SPRINGCITY | TN |
| 2021-02-16 | 423-515-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TN | 525E | SO PITTSBG | TN |
| 2021-02-16 | 423-565-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | DECATUR | TN |
| 2021-02-16 | 423-565-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | DECATUR | TN |
| 2021-02-16 | 423-589-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | GEORGETOWN | TN |
| 2021-02-16 | 423-600-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TN | 525E | APISON | TN |
| 2021-02-16 | 423-615-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | COLLEGEDL | TN |
| 2021-02-16 | 423-644-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TN | 525E | SODDYDAISY | TN |
| 2021-02-16 | 423-644-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | SODDYDAISY | TN |
| 2021-02-16 | 423-770-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TN | 525E | CHURCHHILL | TN |
| 2021-02-16 | 423-770-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TN | 525E | CHURCHHILL | TN |
| 2021-02-16 | 423-910-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TN | 525E | OOLTEWAH | TN |
| 2021-02-16 | 423-939-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | JASPER | TN |
| 2021-02-16 | 423-955-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | WHITWELL | TN |
| 2021-02-15 | 423-441-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TN | 525E | CUMBERLDGP | TN |
| 2021-02-15 | 423-801-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TN | 525E | CUMBERLDGP | TN |
| 2021-02-11 | 423-734-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | ROGERSVL | TN |
| 2021-02-11 | 423-734-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | ROGERSVL | TN |
| 2021-02-11 | 423-734-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | ROGERSVL | TN |
| 2021-02-11 | 423-734-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | ROGERSVL | TN |
| 2021-02-09 | 423-372-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | JELLICO | TN |
| 2021-02-08 | 423-742-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2021-02-08 | 423-742-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2021-02-08 | 423-758-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2021-02-08 | 423-793-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2021-02-08 | 423-793-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2021-02-08 | 423-793-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | 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.