NumberResearchThousands-blocks in 843-712
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 843-712 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 |
|---|---|---|---|---|---|---|---|
| 2006-06-02 | 843-712-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MYRTLE BCH | SC |
| 2009-09-16 | 843-712-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | MYRTLE BCH | SC |
| 2006-09-25 | 843-712-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | MYRTLE BCH | SC |
| 2017-01-04 | 843-712-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | MYRTLE BCH | SC |
| 2017-03-01 | 843-712-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | MYRTLE BCH | SC |
| 2017-05-12 | 843-712-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MYRTLE BCH | SC |
| 2017-05-12 | 843-712-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MYRTLE BCH | SC |
| 2016-03-25 | 843-712-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | MYRTLE BCH | SC |
| 2018-04-03 | 843-712-8XXX | 8000–8999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | MYRTLE BCH | SC |
| 2007-10-18 | 843-712-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MYRTLE BCH | 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.