NumberResearchRecent thousands-block assignments
0 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, all time — NPA 430
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 |
|---|---|---|---|---|---|---|---|
| 2024-03-13 | 430-230-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | AVERY | TX |
| 2024-03-13 | 430-300-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | RUSK | TX |
| 2024-03-13 | 430-334-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | CLARKSVL | TX |
| 2024-03-13 | 430-697-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | ANNONA | TX |
| 2024-03-13 | 430-788-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | BIG SANDY | TX |
| 2023-01-19 | 430-313-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | WINFIELD | TX |
| 2022-11-15 | 430-264-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | NEW LONDON | TX |
| 2022-09-26 | 430-433-0XXX | 0000–0999 | Assigned | CSC VOICE, LLC | 612K | COMO | TX |
| 2022-06-03 | 430-314-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | GILMER | TX |
| 2022-06-03 | 430-314-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | GILMER | TX |
| 2022-06-03 | 430-460-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | OVERTON | TX |
| 2022-06-03 | 430-460-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | OVERTON | TX |
| 2022-02-16 | 430-296-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | BAGWELL | TX |
| 2022-02-09 | 430-209-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | DEPORT | TX |
| 2022-02-09 | 430-251-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | BOGATA | TX |
| 2022-02-09 | 430-290-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | DETROIT | TX |
| 2019-11-08 | 430-276-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | HAWKINS | TX |
| 2015-06-30 | 430-777-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | TROUP | TX |
| 2014-03-04 | 430-222-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | MTPLEASANT | TX |
| 2014-02-03 | 430-702-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | GLADEWATER | TX |
| 2014-02-03 | 430-702-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | GLADEWATER | TX |
| 2014-01-29 | 430-201-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | LONGVIEW | TX |
| 2014-01-29 | 430-222-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | MTPLEASANT | TX |
| 2014-01-29 | 430-222-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | MTPLEASANT | TX |
| 2014-01-29 | 430-235-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | LINDL SWAN | TX |
| 2014-01-29 | 430-235-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | LINDL SWAN | TX |
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.