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 319
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-07-16 | 319-370-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | COGGON | IA |
| 2025-07-16 | 319-407-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | WAVERLY | IA |
| 2025-07-16 | 319-410-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | OELWEIN | IA |
| 2025-07-16 | 319-441-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | CENTER PT | IA |
| 2025-07-16 | 319-502-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | WATERLOO | IA |
| 2025-07-16 | 319-719-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | VINTON | IA |
| 2025-07-16 | 319-910-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | PARKERSBG | IA |
| 2025-07-15 | 319-281-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | HUDSON | IA |
| 2025-07-15 | 319-303-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | DENVER | IA |
| 2025-07-15 | 319-305-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | MT VERNON | IA |
| 2025-07-15 | 319-417-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | FT MADISON | IA |
| 2025-07-15 | 319-468-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | INDEPNDNCE | IA |
| 2025-07-15 | 319-492-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | IOWA CITY | IA |
| 2025-07-15 | 319-496-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | MONTICELLO | IA |
| 2025-07-15 | 319-732-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | KEOKUK | IA |
| 2025-06-25 | 319-243-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | CEDARFALLS | IA |
| 2025-06-25 | 319-405-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | ANAMOSA | IA |
| 2025-06-25 | 319-601-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | BURLINGTON | IA |
| 2021-04-01 | 319-317-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | CEDAR RPDS | IA |
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.