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 341
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 |
|---|---|---|---|---|---|---|---|
| 2021-04-07 | 341-200-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | HRCUL-RODE | CA |
| 2021-04-07 | 341-201-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | FRNK OLIVR | CA |
| 2021-04-07 | 341-226-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | OKLD FRTVL | CA |
| 2021-04-07 | 341-234-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | OKLD ALMD | CA |
| 2021-04-07 | 341-314-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | ELSBR-PINL | CA |
| 2021-04-07 | 341-336-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | FRNK GRNLF | CA |
| 2021-04-07 | 341-900-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | CROCKETT | CA |
| 2021-04-07 | 341-946-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | OKLD BKLY | CA |
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.