NumberResearchRecent thousands-block assignments
33 blocks assigned in March 2026 · 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, March 2026 — NPA 405
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-03-31 | 405-405-6XXX | 6000–6999 | Assigned | EXIANT COMMUNICATIONS LLC | 114J | ALEX | OK |
| 2026-03-06 | 405-283-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | PIEDMONT | OK |
| 2026-03-06 | 405-356-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | WELLSTON | OK |
| 2026-03-06 | 405-357-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | WHEATLAND | OK |
| 2026-03-06 | 405-362-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | TUTTLE | OK |
| 2026-03-06 | 405-383-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | WANETTE | OK |
| 2026-03-06 | 405-389-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | WETUMKA | OK |
| 2026-03-06 | 405-459-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | POCASSET | OK |
| 2026-03-06 | 405-578-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | YUKON | OK |
| 2026-03-06 | 405-786-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | WELEETKA | OK |
| 2026-03-06 | 405-801-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | NORMAN | OK |
| 2026-03-06 | 405-804-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | SPENCER | OK |
| 2026-03-06 | 405-939-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | PERKINS | OK |
| 2026-03-05 | 405-233-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | ARCADIA | OK |
| 2026-03-05 | 405-241-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | BRITTON | OK |
| 2026-03-05 | 405-276-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | EL RENO | OK |
| 2026-03-05 | 405-277-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | LUTHER | OK |
| 2026-03-05 | 405-309-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | HARRAH | OK |
| 2026-03-05 | 405-346-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | GUTHRIE | OK |
| 2026-03-05 | 405-353-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | MUSTANG | OK |
| 2026-03-05 | 405-363-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | EDMOND | OK |
| 2026-03-05 | 405-369-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | MINCO | OK |
| 2026-03-05 | 405-384-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | BETHANY | OK |
| 2026-03-05 | 405-405-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | ALEX | OK |
| 2026-03-05 | 405-433-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | CASHION | OK |
| 2026-03-05 | 405-483-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | UNION CITY | OK |
| 2026-03-05 | 405-586-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | MERIDIAN | OK |
| 2026-03-05 | 405-731-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | MIDWEST CY | OK |
| 2026-03-05 | 405-800-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | MOORE | OK |
| 2026-03-05 | 405-807-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | NICOMAPARK | OK |
| 2026-03-05 | 405-865-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | CARNEY | OK |
| 2026-03-05 | 405-944-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | CROMWELL | OK |
| 2026-03-05 | 405-995-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | HOLDENVL | OK |
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.