NumberResearchRecent thousands-block assignments
2 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 815
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2006-07-19 | 815-419-6XXX | 6000–6999 | Assigned | MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | 846F | PONTIAC | IL |
| 2006-07-19 | 815-873-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | NEWMILFORD | IL |
| 2006-07-17 | 815-508-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | DE KALB | IL |
| 2006-07-17 | 815-644-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CRESCENTCY | IL |
| 2006-07-17 | 815-883-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | OGLESBY | IL |
| 2006-07-17 | 815-883-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | OGLESBY | IL |
| 2006-07-17 | 815-915-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PRINCETON | IL |
| 2006-07-14 | 815-514-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | JOLIET | IL |
| 2006-07-14 | 815-514-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | JOLIET | IL |
| 2006-07-11 | 815-268-1XXX | 1000–1999 | Assigned | ACCESS ONE, INC. - IL | 5447 | ONARGA | IL |
| 2006-07-11 | 815-287-8XXX | 8000–8999 | Assigned | ACCESS ONE, INC. - IL | 5447 | VERONA | IL |
| 2006-07-11 | 815-290-8XXX | 8000–8999 | Assigned | ACCESS ONE, INC. - IL | 5447 | MINOOKA | IL |
| 2006-07-11 | 815-305-8XXX | 8000–8999 | Assigned | ACCESS ONE, INC. - IL | 5447 | GARDNER | IL |
| 2006-07-11 | 815-308-4XXX | 4000–4999 | Assigned | ACCESS ONE, INC. - IL | 5447 | WOODSTOCK | IL |
| 2006-07-11 | 815-310-8XXX | 8000–8999 | Assigned | ACCESS ONE, INC. - IL | 5447 | UTICA | IL |
| 2006-07-11 | 815-314-1XXX | 1000–1999 | Assigned | ACCESS ONE, INC. - IL | 5447 | MANHATTAN | IL |
| 2006-07-11 | 815-315-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | ROCKFORD | IL |
| 2006-07-11 | 815-315-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | ROCKFORD | IL |
| 2006-07-11 | 815-317-8XXX | 8000–8999 | Assigned | ACCESS ONE, INC. - IL | 5447 | CRESCENTCY | IL |
| 2006-07-11 | 815-318-8XXX | 8000–8999 | Assigned | ACCESS ONE, INC. - IL | 5447 | MORRIS | IL |
| 2006-07-11 | 815-322-8XXX | 8000–8999 | Assigned | ACCESS ONE, INC. - IL | 5447 | MCHENRY | IL |
| 2006-07-11 | 815-390-8XXX | 8000–8999 | Assigned | ACCESS ONE, INC. - IL | 5447 | BRAIDWOOD | IL |
| 2006-07-11 | 815-415-5XXX | 5000–5999 | Assigned | ACCESS ONE, INC. - IL | 5447 | SENECA | IL |
| 2006-07-11 | 815-421-8XXX | 8000–8999 | Assigned | ACCESS ONE, INC. - IL | 5447 | HERSCHER | IL |
| 2006-07-11 | 815-423-8XXX | 8000–8999 | Assigned | ACCESS ONE, INC. - IL | 5447 | ELWOOD | IL |
| 2006-07-11 | 815-448-6XXX | 6000–6999 | Assigned | ACCESS ONE, INC. - IL | 5447 | MAZON | IL |
| 2006-07-11 | 815-484-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | ROCKFORD | IL |
| 2006-07-11 | 815-506-8XXX | 8000–8999 | Assigned | ACCESS ONE, INC. - IL | 5447 | UNION | IL |
| 2006-07-11 | 815-515-8XXX | 8000–8999 | Assigned | ACCESS ONE, INC. - IL | 5447 | WATSEKA | IL |
| 2006-07-11 | 815-534-8XXX | 8000–8999 | Assigned | ACCESS ONE, INC. - IL | 5447 | FRANKFORT | IL |
| 2006-07-11 | 815-587-8XXX | 8000–8999 | Assigned | ACCESS ONE, INC. - IL | 5447 | OTTAWA | IL |
| 2006-07-11 | 815-596-8XXX | 8000–8999 | Assigned | ACCESS ONE, INC. - IL | 5447 | MARENGO | IL |
| 2006-07-11 | 815-695-2XXX | 2000–2999 | Assigned | ACCESS ONE, INC. - IL | 5447 | NEWARK | IL |
| 2006-07-11 | 815-707-8XXX | 8000–8999 | Assigned | ACCESS ONE, INC. - IL | 5447 | GILMAN | IL |
| 2006-07-11 | 815-717-1XXX | 1000–1999 | Assigned | ACCESS ONE, INC. - IL | 5447 | NEW LENOX | IL |
| 2006-07-11 | 815-736-1XXX | 1000–1999 | Assigned | ACCESS ONE, INC. - IL | 5447 | LISBON | IL |
| 2006-07-11 | 815-770-8XXX | 8000–8999 | Assigned | ACCESS ONE, INC. - IL | 5447 | HARVARD | IL |
| 2006-07-11 | 815-792-1XXX | 1000–1999 | Assigned | ACCESS ONE, INC. - IL | 5447 | HARDING | IL |
| 2006-07-11 | 815-883-6XXX | 6000–6999 | Assigned | ACCESS ONE, INC. - IL | 5447 | OGLESBY | IL |
| 2006-07-11 | 815-916-3XXX | 3000–3999 | Assigned | ACCESS ONE, INC. - IL | 5447 | PLATTVILLE | IL |
| 2006-07-11 | 815-926-0XXX | 0000–0999 | Assigned | ACCESS ONE, INC. - IL | 5447 | WILMINGTON | IL |
| 2006-07-10 | 815-323-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BELVIDERE | IL |
| 2006-07-10 | 815-323-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BELVIDERE | IL |
| 2006-07-06 | 815-582-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | JOLIET | IL |
| 2006-07-06 | 815-582-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | JOLIET | IL |
| 2006-07-06 | 815-582-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | JOLIET | IL |
| 2006-07-03 | 815-448-3XXX | 3000–3999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | MAZON | IL |
| 2006-06-29 | 815-708-0XXX | 0000–0999 | Assigned | COMCAST IP PHONE, LLC | 318J | ROCKFORD | IL |
| 2006-06-22 | 815-422-7XXX | 7000–7999 | Assigned | ACCESS ONE, INC. - IL | 5447 | ST ANNE | IL |
| 2006-06-22 | 815-450-2XXX | 2000–2999 | Assigned | ACCESS ONE, INC. - IL | 5447 | MOMENCE | IL |
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.