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 570
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2012-08-21 | 570-967-8XXX | 8000–8999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LAWSVILLE | PA |
| 2010-12-29 | 570-632-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ST JOSEPH | PA |
| 2010-12-29 | 570-737-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SPRINGVL | PA |
| 2010-12-22 | 570-432-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | MONTROSE | PA |
| 2010-12-02 | 570-663-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | QUAKERLAKE | PA |
| 2010-12-02 | 570-886-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SAYRE | PA |
| 2009-06-23 | 570-731-7XXX | 7000–7999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SAYRE | PA |
| 2009-02-06 | 570-860-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | HALLSTEAD | PA |
| 2004-07-21 | 570-731-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SAYRE | PA |
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.