NumberResearchThousands-blocks in 845-403
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 845-403 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 845 blocks
Most active assignees, all time — NPA 845
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2016-02-12 | 845-403-0XXX | 0000–0999 | Assigned | ONVOY, LLC- NY | 384C | SPRING VLY | NY |
| 2016-02-12 | 845-403-1XXX | 1000–1999 | Assigned | ONVOY, LLC- NY | 384C | SPRING VLY | NY |
| 2016-07-29 | 845-403-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | SPRING VLY | NY |
| 2016-07-29 | 845-403-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | SPRING VLY | NY |
| 2016-07-29 | 845-403-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | SPRING VLY | NY |
| 2016-07-29 | 845-403-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | SPRING VLY | NY |
| 2016-06-08 | 845-403-6XXX | 6000–6999 | Assigned | TC SYSTEMS, INC. - NY | 7140 | SPRING VLY | NY |
| 2017-04-11 | 845-403-7XXX | 7000–7999 | Assigned | TELNYX LLC | 073H | SPRING VLY | NY |
| 2016-08-05 | 845-403-8XXX | 8000–8999 | Assigned | INTRADO COMMUNICATIONS, LLC | 831C | SPRING VLY | NY |
| 2017-01-27 | 845-403-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | SPRING VLY | NY |
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.