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 224
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2016-12-06 | 224-517-0XXX | 0000–0999 | Assigned | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | 8702 | BARRINGTON | IL |
| 2015-05-21 | 224-802-9XXX | 9000–9999 | Assigned | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | 8702 | DUNDEE | IL |
| 2007-12-20 | 224-208-0XXX | 0000–0999 | Assigned | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | 8702 | BARTLETT | IL |
| 2007-07-16 | 224-764-2XXX | 2000–2999 | Assigned | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | 8702 | ARLIGTNHTS | IL |
| 2007-07-10 | 224-534-1XXX | 1000–1999 | Assigned | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | 8702 | SKOKIE | IL |
| 2007-07-05 | 224-217-5XXX | 5000–5999 | Assigned | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | 8702 | DESPLAINES | IL |
| 2007-07-05 | 224-260-8XXX | 8000–8999 | Assigned | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | 8702 | GLENVIEW | IL |
| 2007-07-05 | 224-353-3XXX | 3000–3999 | Assigned | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | 8702 | ROSELLE | IL |
| 2007-07-05 | 224-578-7XXX | 7000–7999 | Assigned | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | 8702 | PALATINE | IL |
| 2007-07-05 | 224-856-1XXX | 1000–1999 | Assigned | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | 8702 | ELGIN | IL |
| 2007-07-05 | 224-927-0XXX | 0000–0999 | Assigned | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | 8702 | NORTHBROOK | IL |
| 2006-08-08 | 224-535-6XXX | 6000–6999 | Assigned | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | 8702 | ELGIN | IL |
| 2004-08-10 | 224-612-6XXX | 6000–6999 | Assigned | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | 8702 | DESPLAINES | IL |
| 2004-08-10 | 224-639-4XXX | 4000–4999 | Assigned | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | 8702 | NORTHBROOK | 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.