NumberResearchRecent thousands-block assignments
1 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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-09-02 | 423-978-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | CHATTNOOGA | TN |
| 2026-08-20 | 423-695-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | BRISTOL | TN |
| 2022-12-28 | 423-810-4XXX | 4000–4999 | Assigned | TELNYX LLC | 073H | CHARLESTON | TN |
| 2022-08-09 | 423-219-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | CHARLESTON | TN |
| 2022-06-07 | 423-662-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | BLOUNTVL | TN |
| 2022-05-27 | 423-545-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | MADISONVL | TN |
| 2022-05-10 | 423-770-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | CHURCHHILL | TN |
| 2021-11-03 | 423-219-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | CHARLESTON | TN |
| 2021-11-03 | 423-597-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | BENTON | TN |
| 2021-06-22 | 423-456-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | LAFOLLETTE | TN |
| 2021-05-18 | 423-688-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | SNEEDVILLE | TN |
| 2021-04-20 | 423-934-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | SURGOINSVL | 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 |
| 2021-02-09 | 423-372-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | JELLICO | TN |
| 2020-12-30 | 423-407-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | SPRINGCITY | TN |
| 2020-12-30 | 423-419-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | CUMBERLDGP | TN |
| 2020-12-30 | 423-481-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | ROAN MT | TN |
| 2020-12-30 | 423-501-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | MOUNTAINCY | TN |
| 2020-12-30 | 423-515-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | SO PITTSBG | TN |
| 2020-12-30 | 423-560-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | ERWIN | TN |
| 2020-12-30 | 423-565-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | DECATUR | TN |
| 2020-12-30 | 423-567-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | DAYTON | TN |
| 2020-12-30 | 423-583-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | SULIVNGDNS | TN |
| 2020-12-30 | 423-589-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | GEORGETOWN | TN |
| 2020-12-30 | 423-603-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | FORK RIDGE | TN |
| 2020-12-30 | 423-607-4XXX | 4000–4999 | Assigned | TELNYX LLC | 073H | LIMESTONE | TN |
| 2020-12-30 | 423-644-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | SODDYDAISY | TN |
| 2020-12-30 | 423-651-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | JASPER | TN |
| 2020-12-30 | 423-657-3XXX | 3000–3999 | Assigned | TELNYX LLC | 073H | MOSHEIM | TN |
| 2020-12-30 | 423-666-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | ELIZABTHTN | TN |
| 2020-12-30 | 423-726-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | MIDWAY SUL | TN |
| 2020-12-30 | 423-732-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | KINGSPORT | TN |
| 2020-12-30 | 423-806-4XXX | 4000–4999 | Assigned | TELNYX LLC | 073H | MIDWAY | TN |
| 2020-12-30 | 423-812-3XXX | 3000–3999 | Assigned | TELNYX LLC | 073H | GREENEVL | TN |
| 2020-12-30 | 423-850-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | JONESBORO | TN |
| 2020-12-30 | 423-873-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | STONEY CRK | TN |
| 2020-12-30 | 423-896-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | HAMPTON | TN |
| 2020-12-30 | 423-897-4XXX | 4000–4999 | Assigned | TELNYX LLC | 073H | FALLBRANCH | TN |
| 2020-12-30 | 423-955-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | WHITWELL | TN |
| 2020-12-24 | 423-216-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | BENTON | TN |
| 2020-12-24 | 423-219-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | CHARLESTON | TN |
| 2020-12-24 | 423-226-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | CHURCHHILL | TN |
| 2020-12-24 | 423-250-7XXX | 7000–7999 | Assigned | TELNYX LLC | 073H | CLEVELAND | TN |
| 2020-12-24 | 423-279-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | BLOUNTVL | TN |
| 2020-12-24 | 423-340-3XXX | 3000–3999 | Assigned | TELNYX LLC | 073H | BRISTOL | TN |
| 2020-12-24 | 423-659-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | COPPERBSIN | TN |
| 2020-12-24 | 423-712-4XXX | 4000–4999 | Assigned | TELNYX LLC | 073H | BLUFF CITY | TN |
| 2020-12-24 | 423-840-3XXX | 3000–3999 | Assigned | TELNYX LLC | 073H | BUTLER | TN |
| 2020-12-18 | 423-922-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | BAILEYTON | 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.