NumberResearchRecent thousands-block assignments
2 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 815
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 |
|---|---|---|---|---|---|---|---|
| 2002-10-01 | 815-981-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | DE KALB | IL |
| 2002-09-10 | 815-207-4XXX | 4000–4999 | Assigned | ILLINOIS BELL TEL CO | 9329 | JOLIET | IL |
| 2002-09-10 | 815-207-5XXX | 5000–5999 | Assigned | ILLINOIS BELL TEL CO | 9329 | JOLIET | IL |
| 2002-08-21 | 815-570-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | SANDWICH | IL |
| 2002-08-16 | 815-246-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | EARLVILLE | IL |
| 2002-08-16 | 815-249-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | GRANDRIDGE | IL |
| 2002-08-16 | 815-313-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | OTTAWA | IL |
| 2002-08-16 | 815-317-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | CRESCENTCY | IL |
| 2002-08-16 | 815-410-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | LA SALLE | IL |
| 2002-08-16 | 815-452-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | TOLUCA | IL |
| 2002-08-16 | 815-496-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | SHERIDAN | IL |
| 2002-08-16 | 815-627-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | PAW PAW | IL |
| 2002-08-16 | 815-673-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | STREATOR | IL |
| 2002-08-16 | 815-797-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | SOMONAUK | IL |
| 2002-08-16 | 815-799-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | MANLIUS | IL |
| 2002-08-16 | 815-844-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | PONTIAC | IL |
| 2002-08-16 | 815-863-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | RUTLAND | IL |
| 2002-08-16 | 815-869-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | MAGNOLIA | IL |
| 2002-08-16 | 815-915-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | PRINCETON | IL |
| 2002-07-11 | 815-310-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | UTICA | IL |
| 2002-06-27 | 815-656-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | FREEPORT | IL |
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.