NumberResearchThousands-blocks in 843-638
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 843-638 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 |
|---|---|---|---|---|---|---|---|
| — | 843-638-0XXX | 0000–0999 | Reserved | PAETEC ITEL, LLC | 829J | ST GEORGE | SC |
| 2015-06-08 | 843-638-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - SC | 077F | ST GEORGE | SC |
| 2021-02-05 | 843-638-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | ST GEORGE | SC |
| 2010-02-03 | 843-638-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - SC | 077F | ST GEORGE | SC |
| 2009-01-23 | 843-638-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA SC- LLC | 635C | ST GEORGE | SC |
| 2011-10-21 | 843-638-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ST GEORGE | SC |
| 2021-02-02 | 843-638-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF SOUTH CAROLINA, LLC - SC | 098H | ST GEORGE | SC |
| 2015-09-30 | 843-638-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - SC | 077F | ST GEORGE | SC |
| 2015-09-29 | 843-638-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF SOUTH CAROLINA, LLC - SC | 098H | ST GEORGE | SC |
| 2017-07-18 | 843-638-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - SC | 077F | ST GEORGE | SC |
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.