NumberResearchThousands-blocks in 843-879
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 843-879 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 |
|---|---|---|---|---|---|---|---|
| — | 843-879-0XXX | 0000–0999 | Reserved | PAETEC ITEL, LLC | 829J | SUMMERVL | SC |
| 2015-03-02 | 843-879-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | SUMMERVL | SC |
| 2014-10-30 | 843-879-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SUMMERVL | SC |
| 2011-04-20 | 843-879-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SUMMERVL | SC |
| 2010-05-21 | 843-879-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - SC | 077F | SUMMERVL | SC |
| 2009-02-18 | 843-879-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA SC- LLC | 635C | SUMMERVL | SC |
| 2017-04-06 | 843-879-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SUMMERVL | SC |
| 2014-02-20 | 843-879-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SUMMERVL | SC |
| 2008-11-05 | 843-879-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - SC | 077F | SUMMERVL | SC |
| 2006-03-01 | 843-879-9XXX | 9000–9999 | Assigned | COMCAST IP PHONE, LLC | 318J | SUMMERVL | 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.