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 864
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-08-22 | 864-500-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | GREENWOOD | SC |
| 2024-08-22 | 864-773-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | TROY | SC |
| 2024-08-22 | 864-782-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | WARESHOALS | SC |
| 2024-08-22 | 864-856-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | HODGES | SC |
| 2024-08-22 | 864-970-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | NINETY SIX | SC |
| 2023-03-24 | 864-519-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | CALHOUNFLS | SC |
| 2023-02-22 | 864-816-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | GREENVILLE | SC |
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.