NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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 |
|---|---|---|---|---|---|---|---|
| 2004-01-22 | 843-933-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | HEMINGWAY | SC |
| 2004-01-22 | 843-933-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | HEMINGWAY | SC |
| 2004-01-09 | 843-557-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2004-01-09 | 843-557-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2004-01-09 | 843-557-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2004-01-09 | 843-557-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2004-01-09 | 843-557-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2004-01-05 | 843-558-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | HEMINGWAY | SC |
| 2003-11-05 | 843-922-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | HARLEYVL | SC |
| 2003-10-30 | 843-654-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA SC- LLC | 635C | MTPLEASANT | SC |
| 2003-10-22 | 843-291-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MONCKS COR | SC |
| 2003-10-22 | 843-291-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MONCKS COR | SC |
| 2003-10-20 | 843-944-9XXX | 9000–9999 | Assigned | AT&T - LOCAL | 7421 | DARLINGTON | SC |
| 2003-10-09 | 843-303-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2003-10-09 | 843-303-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2003-10-09 | 843-303-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2003-10-09 | 843-303-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2003-10-09 | 843-532-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2003-10-09 | 843-532-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2003-09-09 | 843-654-2XXX | 2000–2999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | MTPLEASANT | SC |
| 2003-09-09 | 843-654-3XXX | 3000–3999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | MTPLEASANT | SC |
| 2003-09-09 | 843-654-5XXX | 5000–5999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | MTPLEASANT | SC |
| 2003-08-20 | 843-773-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | FLORENCE | SC |
| 2003-08-19 | 843-639-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | HARTSVILLE | SC |
| 2003-08-08 | 843-303-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 288B | CHARLESTON | SC |
| 2003-08-08 | 843-968-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | DARLINGTON | SC |
| 2003-07-21 | 843-532-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2003-07-21 | 843-532-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2003-07-21 | 843-532-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2003-06-13 | 843-375-3XXX | 3000–3999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | MTPLEASANT | SC |
| 2003-06-13 | 843-375-4XXX | 4000–4999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | MTPLEASANT | SC |
| 2003-06-13 | 843-375-5XXX | 5000–5999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | MTPLEASANT | SC |
| 2003-05-01 | 843-603-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC | 6398 | EDISTO IS | SC |
| 2003-04-30 | 843-631-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC | 6398 | EDISTO IS | SC |
| 2003-04-23 | 843-701-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC | 6398 | ST GEORGE | SC |
| 2003-03-24 | 843-532-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2003-03-24 | 843-532-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2003-03-24 | 843-532-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2003-03-24 | 843-532-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2003-03-24 | 843-532-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2003-03-24 | 843-633-9XXX | 9000–9999 | Assigned | AT&T - LOCAL | 7421 | FOLLYBEACH | SC |
| 2003-02-20 | 843-376-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | 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.