NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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 909
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 |
|---|---|---|---|---|---|---|---|
| 2016-02-12 | 909-462-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | S BERNDINO | CA |
| 2015-08-26 | 909-314-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | S BERNDINO | CA |
| 2015-08-26 | 909-655-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | DIAMONDBAR | CA |
| 2015-08-26 | 909-735-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | REDLANDS | CA |
| 2015-08-21 | 909-324-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | RUNNINGSPG | CA |
| 2015-08-21 | 909-330-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | ETIWANDA | CA |
| 2015-08-21 | 909-366-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | BIGBEAR LK | CA |
| 2015-08-21 | 909-582-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | ARROWHEAD | CA |
| 2015-08-21 | 909-662-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | CHINO | CA |
| 2015-08-21 | 909-671-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | POMONA | CA |
| 2015-08-21 | 909-683-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | MARSHALL | CA |
| 2015-08-21 | 909-686-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | MENTONE | CA |
| 2015-08-21 | 909-687-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | ONTARIO | CA |
| 2006-08-16 | 909-436-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | ARROWHEAD | CA |
| 2006-08-16 | 909-436-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | ARROWHEAD | CA |
| 2006-08-16 | 909-527-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | UPLAND | CA |
| 2006-08-16 | 909-527-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | UPLAND | CA |
| 2006-08-16 | 909-689-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | ETIWANDA | CA |
| 2006-08-16 | 909-689-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | ETIWANDA | CA |
| 2006-08-16 | 909-705-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | MENTONE | CA |
| 2006-08-16 | 909-726-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | MARSHALL | CA |
| 2006-08-16 | 909-894-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | REDLANDS | CA |
| 2006-08-16 | 909-894-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | REDLANDS | CA |
| 2006-04-21 | 909-461-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | POMONA | CA |
| 2006-04-21 | 909-461-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | POMONA | CA |
| 2006-03-08 | 909-440-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | RIALTO | CA |
| 2006-03-08 | 909-440-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | RIALTO | CA |
| 2005-01-11 | 909-327-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | S BERNDINO | CA |
| 2005-01-11 | 909-327-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | S BERNDINO | CA |
| 2004-10-18 | 909-446-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | CALIMESA | CA |
| 2004-10-18 | 909-446-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | CALIMESA | CA |
| 2004-10-18 | 909-575-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | CLAREMONT | CA |
| 2004-10-18 | 909-575-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | CLAREMONT | CA |
| 2004-10-18 | 909-589-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | CRESTLINE | CA |
| 2004-10-18 | 909-589-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | CRESTLINE | CA |
| 2004-10-18 | 909-740-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | ONTARIO | CA |
| 2004-10-18 | 909-740-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | ONTARIO | CA |
| 2004-10-18 | 909-895-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | DIAMONDBAR | CA |
| 2004-10-18 | 909-895-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | DIAMONDBAR | CA |
| 2003-09-23 | 909-554-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | COLTON | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.