NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
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 |
|---|---|---|---|---|---|---|---|
| 2005-02-22 | 843-376-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | SUMMERVL | SC |
| 2005-02-22 | 843-476-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | BEAUFORT | SC |
| 2005-02-22 | 843-933-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | HEMINGWAY | SC |
| 2005-02-17 | 843-475-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2005-02-17 | 843-475-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | CHARLESTON | SC |
| 2005-02-17 | 843-475-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | CHARLESTON | SC |
| 2005-02-16 | 843-303-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2005-02-16 | 843-303-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2005-02-10 | 843-453-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | FLORENCE | SC |
| 2005-02-10 | 843-453-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | FLORENCE | SC |
| 2005-02-07 | 843-375-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | MTPLEASANT | SC |
| 2005-02-07 | 843-376-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | SUMMERVL | SC |
| 2005-02-07 | 843-589-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | YEMASSEE | SC |
| 2005-02-01 | 843-548-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | LOWCOUNTRY | SC |
| 2005-01-31 | 843-654-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | MTPLEASANT | SC |
| 2005-01-28 | 843-503-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | WMYRTLEBCH | SC |
| 2005-01-17 | 843-492-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | MYRTLE BCH | SC |
| 2005-01-10 | 843-323-3XXX | 3000–3999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | CHARLESTON | SC |
| 2005-01-06 | 843-425-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2005-01-06 | 843-425-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2005-01-06 | 843-425-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2005-01-06 | 843-453-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | FLORENCE | SC |
| 2005-01-05 | 843-400-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | MCCOLL | SC |
| 2005-01-05 | 843-418-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | LATTA | SC |
| 2004-12-29 | 843-268-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | LAKE VIEW | SC |
| 2004-12-29 | 843-306-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | CLIO | SC |
| 2004-12-29 | 843-350-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | BLENHEIM | SC |
| 2004-12-29 | 843-536-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | FLORENCE | SC |
| 2004-12-29 | 843-628-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | CHARLESTON | SC |
| 2004-12-29 | 843-628-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | CHARLESTON | SC |
| 2004-12-17 | 843-264-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | ANDREWS | SC |
| 2004-12-14 | 843-628-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | CHARLESTON | SC |
| 2004-12-14 | 843-628-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | CHARLESTON | SC |
| 2004-12-14 | 843-628-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | CHARLESTON | SC |
| 2004-12-13 | 843-424-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MYRTLE BCH | SC |
| 2004-12-09 | 843-542-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | WALTERBORO | SC |
| 2004-12-08 | 843-453-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | FLORENCE | SC |
| 2004-12-07 | 843-968-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | DARLINGTON | SC |
| 2004-11-17 | 843-202-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2004-11-17 | 843-269-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | FLORENCE | SC |
| 2004-11-17 | 843-473-1XXX | 1000–1999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | BEAUFORT | SC |
| 2004-11-16 | 843-205-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MYRTLE BCH | SC |
| 2004-11-16 | 843-415-0XXX | 0000–0999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | HILTONHEAD | SC |
| 2004-11-16 | 843-542-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | WALTERBORO | SC |
| 2004-11-12 | 843-471-2XXX | 2000–2999 | Assigned | BERKELEY CABLE TELEVISION INC DBA HOME TELECOM-SC | 712C | CHARLESTON | SC |
| 2004-11-12 | 843-475-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | CHARLESTON | SC |
| 2004-11-12 | 843-475-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | CHARLESTON | SC |
| 2004-11-12 | 843-476-7XXX | 7000–7999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | BEAUFORT | SC |
| 2004-11-12 | 843-476-8XXX | 8000–8999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | BEAUFORT | SC |
| 2004-10-26 | 843-268-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | LAKE VIEW | 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.