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 336
BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 166
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 90
SUNCOM DBA T-MOBILE USA 63
BRIGHTSPEED OF NORTH CAROLINA, LLC 58
NEW CINGULAR WIRELESS PCS, LLC - GA 46
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
2007-03-13 336-281 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K QUAKER GAP NC
2007-03-08 336-827 1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K STATE ROAD NC
2007-02-08 336-350 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BURLINGTON NC
2007-01-25 336-300 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LEXINGTON NC
2007-01-13 336-872 0–9 XXXall 10 · 7 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K SEAGROVE NC
2007-01-08 336-742 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K ANDERSON NC
2006-10-23 336-529 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2006-10-11 336-756 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOUNT AIRY NC
2006-10-10 336-990 0–9 XXXall 10 · 4 holders which blocks → WILKES COMMUNICATIONS, INC. - NC 795D NOWILKESBO NC
2006-09-18 336-737 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K RAMSEUR NC
2006-07-28 336-501 0–9 XXXall 10 · 3 holders which blocks → READY TELECOM, INC. - NC 5307 GREENSBORO NC
2006-05-18 336-489 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WJEFFERSON NC
2006-05-10 336-452 0–9 XXXall 10 · 3 holders which blocks → CAROLINA WEST WIRELESS, INC. 5932 LOMAX NC
2006-01-30 336-740 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 GREENSBORO NC
2005-10-07 336-620 not yet reported which blocks → CAROLINA WEST WIRELESS, INC. 5932 BALDWIN NC
2005-05-11 336-799 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 RANDLEMAN NC
2005-04-25 336-754 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 WALKERTOWN NC
2005-04-13 336-444 0–9 XXXall 10 · 8 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 PILOT MT NC
2005-04-13 336-551 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 BOONVILLE NC
2005-04-13 336-949 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 MADISON NC
2005-03-15 336-455 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 GREENSBORO NC
2005-03-08 336-525 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 SAXAPAHAW NC
2005-03-08 336-844 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 NOWILKESBO NC
2004-12-01 336-899 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J HIGH POINT NC
2004-10-25 336-868 0–9 XXXwhole prefix which blocks → LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC 7973 GREENSBORO NC
2004-10-18 336-505 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 KIMESVILLE NC
2004-08-27 336-522 0XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 GREENSBORO NC
2004-07-16 336-443 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 DOBSON NC
2004-07-08 336-617 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC 7973 GREENSBORO NC
2004-06-03 336-429 0–9 XXXall 10 · 4 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 MOUNT AIRY NC
2004-04-26 336-459 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 YANCEYVL NC
2004-04-13 336-426 0–9 XXXall 10 · 3 holders which blocks → CAROLINA WEST WIRELESS, INC. 5932 ELKIN NC
2004-04-01 336-289 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC 7973 HIGH POINT NC
2004-03-16 336-258 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J ELKIN NC
2003-12-04 336-355 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2003-10-21 336-356 not yet reported which blocks → PIEDMONT COMMUNICATIONS SERVICES, INC. - NC 035B DOBSON NC
2003-10-01 336-441 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 SUMMERFLD NC
2003-09-22 336-477 0–9 XXXall 10 · 6 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 MOCKSVILLE NC
2003-07-09 336-638 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 GREENSBORO NC
2003-03-05 336-596 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 LEXINGTON NC
2003-01-28 336-702 0–9 XXXwhole prefix which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 WINSTN SAL NC
2002-11-12 336-648 0–9 XXXall 10 · 2 holders which blocks → UNITED STATES CELLULAR - NC 6282 MOUNT AIRY NC
2002-11-12 336-649 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → UNITED STATES CELLULAR - NC 6282 WJEFFERSON NC
2002-10-29 336-486 2XXX3XXX6XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2002-09-23 336-233 0XXX2XXX3XXX4XXX5XXX8XXX · 5 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 JULIAN NC
2002-08-28 336-425 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LEXINGTON NC
2002-06-18 336-552 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 REIDSVILLE NC
2002-06-12 336-653 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ASHEBORO NC
2002-05-29 336-846 not yet reported which blocks → SKYBEST COMMUNICATIONS, INC. - NC 9539 WJEFFERSON NC
2002-05-16 336-583 3XXX7XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 ROXBORO NC

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.