NumberResearchRecent thousands-block assignments
0 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, all time — NPA 224
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2023-10-12 | 224-272-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | ZION | IL |
| 2023-10-12 | 224-272-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | ZION | IL |
| 2023-06-07 | 224-292-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | MUNDELEIN | IL |
| 2023-06-07 | 224-292-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | MUNDELEIN | IL |
| 2023-06-07 | 224-376-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | FOX LAKE | IL |
| 2023-06-07 | 224-376-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | FOX LAKE | IL |
| 2023-06-07 | 224-448-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | BARRINGTON | IL |
| 2023-06-07 | 224-448-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | BARRINGTON | IL |
| 2023-06-07 | 224-462-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | ALGONQUIN | IL |
| 2023-06-07 | 224-462-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | ALGONQUIN | IL |
| 2023-06-07 | 224-463-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | GLENVIEW | IL |
| 2023-06-07 | 224-463-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | GLENVIEW | IL |
| 2023-06-07 | 224-482-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | DEERFIELD | IL |
| 2023-06-07 | 224-483-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | ELGIN | IL |
| 2023-06-07 | 224-544-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | LAKEFOREST | IL |
| 2023-06-07 | 224-569-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | HUNTLEY | IL |
| 2023-06-07 | 224-732-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | WAUCONDA | IL |
| 2023-06-07 | 224-744-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | FRANKLINPK | IL |
| 2023-06-07 | 224-744-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | FRANKLINPK | IL |
| 2023-06-07 | 224-747-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | HAMPSHIRE | IL |
| 2023-06-07 | 224-768-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | LAKEFOREST | IL |
| 2023-06-07 | 224-850-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | CARY | IL |
| 2023-06-07 | 224-850-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | CARY | IL |
| 2023-06-07 | 224-993-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | WAUCONDA | IL |
| 2021-06-03 | 224-218-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | HAMPSHIRE | IL |
| 2021-06-03 | 224-332-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | LAKEFOREST | IL |
| 2021-06-03 | 224-344-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | WILMETTE | IL |
| 2021-06-03 | 224-351-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | HALF DAY | IL |
| 2021-06-03 | 224-376-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | FOX LAKE | IL |
| 2021-06-03 | 224-472-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | WINNETKA | IL |
| 2021-06-03 | 224-732-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | WAUCONDA | IL |
| 2021-06-03 | 224-786-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | HIGHLANDPK | IL |
| 2021-06-03 | 224-850-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | CARY | IL |
| 2021-06-02 | 224-272-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | ZION | IL |
| 2021-06-02 | 224-327-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | MUNDELEIN | IL |
| 2021-06-02 | 224-346-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | LAKE VILLA | IL |
| 2021-06-02 | 224-599-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | BARRINGTON | IL |
| 2021-06-02 | 224-660-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | GLENVIEW | IL |
| 2021-06-02 | 224-744-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | FRANKLINPK | IL |
| 2021-06-01 | 224-371-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | GRAYSLAKE | IL |
| 2021-05-28 | 224-375-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | ALGONQUIN | IL |
| 2021-05-28 | 224-379-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | PARK RIDGE | IL |
| 2021-05-28 | 224-799-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | NORTHBROOK | IL |
| 2021-05-28 | 224-933-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | ROUND LAKE | IL |
| 2021-05-21 | 224-340-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | DESPLAINES | IL |
| 2021-05-21 | 224-367-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | DUNDEE | IL |
| 2021-05-21 | 224-378-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | LIBERTYVL | IL |
| 2021-05-21 | 224-452-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | PALATINE | IL |
| 2021-05-21 | 224-550-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | ELK GROVE | IL |
| 2021-05-20 | 224-341-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | SKOKIE | 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.