NumberResearchThousands-blocks in 843-418
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 843-418 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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2005-01-05 | 843-418-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | LATTA | SC |
| 2013-01-24 | 843-418-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LATTA | SC |
| 2018-06-07 | 843-418-2XXX | 2000–2999 | Assigned | ONVOY, LLC - SC | 548E | LATTA | SC |
| 2023-04-17 | 843-418-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LATTA | SC |
| 2004-10-26 | 843-418-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | LATTA | SC |
| 2011-10-21 | 843-418-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LATTA | SC |
| 2018-05-29 | 843-418-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - SC | 077F | LATTA | SC |
| 2016-09-14 | 843-418-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LATTA | SC |
| 2018-02-08 | 843-418-8XXX | 8000–8999 | Assigned | SOUTH CAROLINA NET, INC. - SC | 1784 | LATTA | SC |
| 2019-05-30 | 843-418-9XXX | 9000–9999 | Assigned | ONVOY, LLC - SC | 548E | LATTA | 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.