NumberResearchThousands-blocks in 843-778
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026
The ten 1,000-number thousand-blocks inside prefix 843-778 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 843 blocks
Most active assignees, all time — NPA 843
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 843-778-0XXX | 0000–0999 | Reserved | TWC IP ENABLED SERVICES, LLC | 793K | LORIS | SC |
| 2016-05-27 | 843-778-1XXX | 1000–1999 | Assigned | TELEPORT COMMUNICATIONS AMERICA SC- LLC | 635C | LORIS | SC |
| 2023-05-04 | 843-778-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC | 6398 | LORIS | SC |
| 2026-01-12 | 843-778-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC | 6398 | LORIS | SC |
| — | 843-778-4XXX | 4000–4999 | Available | LORIS | SC | ||
| 2016-10-28 | 843-778-5XXX | 5000–5999 | Assigned | SOUTH CAROLINA TELECOMM GRP HOLDINGS, LLC - SC | 527H | LORIS | SC |
| 2023-05-11 | 843-778-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | LORIS | SC |
| 2023-06-21 | 843-778-7XXX | 7000–7999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | LORIS | SC |
| 2022-08-03 | 843-778-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC | 6398 | LORIS | SC |
| 2024-12-06 | 843-778-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC | 6398 | LORIS | SC |
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.