NumberResearchRecent thousands-block assignments
3 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 631
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 631-849-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | SHOREHAM | NY |
| — | 631-868-0XXX | 0000–0999 | Assigned | CSC VOICE, LLC | 612K | BAYPORT | NY |
| — | 631-868-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | BAYPORT | NY |
| — | 631-868-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | BAYPORT | NY |
| — | 631-886-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | WADING RIV | NY |
| — | 631-886-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | WADING RIV | NY |
| — | 631-909-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | CTRMORICHS | NY |
| — | 631-909-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | CTRMORICHS | NY |
| — | 631-909-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | CTRMORICHS | NY |
| — | 631-909-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | CTRMORICHS | NY |
| — | 631-920-0XXX | 0000–0999 | Assigned | CSC VOICE, LLC | 612K | MIDLAND | NY |
| — | 631-920-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | MIDLAND | NY |
| — | 631-920-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | MIDLAND | NY |
| — | 631-920-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | MIDLAND | NY |
| — | 631-920-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | MIDLAND | NY |
| — | 631-996-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | QUOGUE | NY |
| — | 631-996-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | QUOGUE | NY |
| — | 631-998-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | WESTHAMPTN | NY |
| — | 631-998-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | WESTHAMPTN | NY |
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.