NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, all time — NPA 843
BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 143
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 103
SUNCOM DBA T-MOBILE USA 65
PAETEC ITEL, LLC 58
FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - SC 57
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2017-03-08 843-949 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BLUFFTON SC
2017-02-28 843-890 0–9 XXXall 10 · 3 holders which blocks → FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - SC 4335 HOLLYWOOD SC
2017-02-24 843-964 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 MONCKS COR SC
2016-12-14 843-459 0–9 XXXall 10 · 7 holders which blocks → TELNYX LLC 073H CHARLESTON SC
2016-11-01 843-827 0XXX which blocks → SOUTH CAROLINA TELECOMM GRP HOLDINGS, LLC - SC 527H AYNOR SC
2016-10-13 843-698 0–9 XXXall 10 · 3 holders which blocks → SOUTH CAROLINA TELECOMM GRP HOLDINGS, LLC - SC 527H EASTCONWAY SC
2016-10-13 843-996 0–9 XXXall 10 · 7 holders which blocks → AT&T ENTERPRISES, LLC 516C CHARLESTON SC
2016-08-16 843-951 0–9 XXXall 10 · 5 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 HARTSVILLE SC
2016-06-24 843-954 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J FLORENCE SC
2016-05-25 843-931 0–9 XXXall 10 · 5 holders which blocks → PALMETTO TELEPHONE COMMUNICATIONS, LLC - SC 154C ST GEORGE SC
2016-04-25 843-929 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 BEAUFORT SC
2015-11-20 843-806 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - SC 548E CHARLESTON SC
2015-10-09 843-998 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2015-07-27 843-990 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2015-03-13 843-790 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - SC 548E CHARLESTON SC
2015-03-11 843-970 0–9 XXXall 10 · 7 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 SUMMERVL SC
2015-01-15 843-925 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 MONCKS COR SC
2015-01-14 843-941 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 BEAUFORT SC
2015-01-12 843-940 0–9 XXXall 10 · 2 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 BEAUFORT SC
2014-12-19 843-920 0–9 XXXall 10 · 3 holders which blocks → PALMETTO TELEPHONE COMMUNICATIONS, LLC - SC 154C HOLLYWOOD SC
2014-10-06 843-800 0–9 XXXall 10 · 5 holders which blocks → AT&T ENTERPRISES, LLC 516C MTPLEASANT SC
2014-10-03 843-888 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - SC 548E MTPLEASANT SC
2014-10-03 843-999 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F MYRTLE BCH SC
2014-09-23 843-936 0–9 XXXall 10 · 7 holders which blocks → COMCAST IP PHONE, LLC 318J MTPLEASANT SC
2014-08-21 843-872 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF SOUTH CAROLINA, LLC - SC 098H CHARLESTON SC
2014-03-07 843-781 0–9 XXXall 10 · 3 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 BEAUFORT SC
2014-01-13 843-804 0–9 XXXall 10 · 4 holders which blocks → WOW! INTERNET, CABLE AND PHONE 961J CHARLESTON SC
2013-05-06 843-203 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J CHARLESTON SC
2013-04-26 843-481 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KINGSTREE SC
2013-03-04 843-702 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 551G FLORENCE SC
2013-02-07 843-212 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 551G CHARLESTON SC
2013-01-09 843-802 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K HILTONHEAD SC
2013-01-07 843-779 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K CHARLESTON SC
2013-01-07 843-799 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K FLORENCE SC
2013-01-07 843-945 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K MYRTLE BCH SC
2013-01-03 843-668 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K COLLINSCK SC
2012-10-16 843-620 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F HOLLYWOOD SC
2012-09-14 843-231 0–9 XXXall 10 · 4 holders which blocks → FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - SC 4335 MYRTLE BCH SC
2012-03-12 843-510 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 WALTERBORO SC
2011-10-28 843-508 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F ROWLAND SC
2011-10-26 843-501 0–9 XXXall 10 · 3 holders which blocks → AT&T ENTERPRISES, LLC 516C CHARLESTON SC
2011-10-19 843-507 0–9 XXXall 10 · 5 holders which blocks → AT&T ENTERPRISES, LLC 516C NEWTONVL SC
2011-08-03 843-593 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F BEAUFORT SC
2011-04-29 843-898 0–9 XXXall 10 · 4 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 WALTERBORO SC
2011-02-08 843-604 0–9 XXXall 10 · 4 holders which blocks → AT&T ENTERPRISES, LLC 516C BLENHEIM SC
2010-11-22 843-900 0–9 XXXall 10 · 5 holders which blocks → BERKELEY CABLE TELEVISION INC DBA HOME TELECOM-SC 712C SUMMERVL SC
2010-08-05 843-410 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - SC 5258 CHARLESTON SC
2010-07-13 843-934 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 MONCKS COR SC
2010-04-21 843-751 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHARLESTON SC
2010-04-21 843-865 0–9 XXXall 10 · 6 holders which blocks → AT&T ENTERPRISES, LLC 516C CHERAW SC

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.