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 818
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-08-21 | 818-273-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | SUNLD TJNG | CA |
| 2006-08-16 | 818-488-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | SNFN GRHL | CA |
| 2006-08-16 | 818-573-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | SNFN PACM | CA |
| 2006-08-16 | 818-573-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | SNFN PACM | CA |
| 2006-08-16 | 818-810-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | SNFN SPLV | CA |
| 2006-08-16 | 818-810-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | SNFN SPLV | CA |
| 2006-04-21 | 818-578-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | RESEDA | CA |
| 2006-04-21 | 818-578-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | RESEDA | CA |
| 2005-01-11 | 818-408-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | SNFN SNFN | CA |
| 2005-01-11 | 818-408-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | SNFN SNFN | CA |
| 2005-01-11 | 818-473-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | SUNLD TJNG | CA |
| 2005-01-11 | 818-473-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | SUNLD TJNG | CA |
| 2003-09-23 | 818-237-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | BRBN BRBN | CA |
| 2003-09-23 | 818-237-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | BRBN BRBN | CA |
| 2003-09-23 | 818-369-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | LACRSCENTA | CA |
| 2003-09-23 | 818-583-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | PSDN LACN | CA |
| 2003-09-23 | 818-583-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | PSDN LACN | 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.