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 864
BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 175
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 95
PAETEC ITEL, LLC 78
NEW CINGULAR WIRELESS PCS, LLC - GA 70
SUNCOM DBA T-MOBILE USA 63
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
2015-01-16 864-971 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J HODGES SC
2015-01-05 864-657 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J JONESVILLE SC
2014-12-11 864-712 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F ANDERSON SC
2014-10-06 864-777 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF SOUTH CAROLINA, LLC - SC 098H LIBERTY SC
2014-10-03 864-999 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - SC 548E GREENVILLE SC
2014-09-18 864-671 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J EASLEY SC
2014-09-16 864-651 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F PENDLETON SC
2014-08-21 864-626 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF SOUTH CAROLINA, LLC - SC 098H GREENVILLE SC
2014-08-12 864-606 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 SPARTANBG SC
2014-05-22 864-571 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F WESTMINSTR SC
2014-05-21 864-774 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F WILLIAMSTN SC
2014-03-25 864-539 0–9 XXXall 10 · 5 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 SENECA SC
2014-02-21 864-729 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J GREENVILLE SC
2014-01-17 864-802 0–9 XXXwhole prefix which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 GREER SC
2014-01-13 864-707 0–9 XXXall 10 · 6 holders which blocks → AT&T ENTERPRISES, LLC 516C SPARTANBG SC
2014-01-08 864-619 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 BLACKSBURG SC
2013-12-24 864-614 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 SENECA SC
2013-08-02 864-603 0–9 XXXall 10 · 5 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K GREENVILLE SC
2013-07-03 864-393 1XXX2XXX3XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → PRTCOMMUNICATIONS, LLC - SC 1701 CROSS HILL SC
2013-05-23 864-559 0–9 XXXall 10 · 2 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 ANDERSON SC
2013-05-17 864-520 0–9 XXXall 10 · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K GREENVILLE SC
2013-03-29 864-407 0–9 XXXall 10 · 5 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 GREENWOOD SC
2013-03-12 864-518 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 GREENVILLE SC
2013-02-07 864-501 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 551G GREENVILLE SC
2012-12-07 864-522 0–9 XXXwhole prefix which blocks → CHARTER IP ENABLED SERVICES, LLC 792K GREENVILLE SC
2012-08-17 864-516 0–9 XXXall 10 · 5 holders which blocks → SOUTH CAROLINA NET, INC. - SC 1784 GREENVILLE SC
2012-08-16 864-509 0–9 XXXall 10 · 6 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K GREENVILLE SC
2012-08-13 864-401 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 ANDERSON SC
2012-05-14 864-321 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GREENWOOD SC
2012-04-10 864-315 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 GREENVILLE SC
2012-03-27 864-309 0–9 XXXall 10 · 4 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 ANDERSON SC
2012-02-21 864-308 0–9 XXXall 10 · 5 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 SPARTANBG SC
2011-12-21 864-301 0–9 XXXall 10 · 6 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 UNION SC
2011-10-25 864-210 0–9 XXXall 10 · 6 holders which blocks → AT&T ENTERPRISES, LLC 516C HONEA PATH SC
2011-09-15 864-305 0–9 XXXall 10 · 4 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 ANDERSON SC
2011-06-23 864-364 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 SENECA SC
2011-06-21 864-359 0–9 XXXall 10 · 5 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 ANDERSON SC
2011-05-17 864-326 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F GREENVILLE SC
2011-02-22 864-300 0–9 XXXall 10 · 5 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 GAFFNEY SC
2011-02-08 864-362 0–9 XXXall 10 · 4 holders which blocks → AT&T ENTERPRISES, LLC 516C JOANNA SC
2010-07-08 864-534 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 GREENVILLE SC
2010-06-17 864-478 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J GREENVILLE SC
2010-06-14 864-437 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 ANDERSON SC
2010-05-25 864-438 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - SC 5258 GREENVILLE SC
2010-05-12 864-405 0–9 XXXall 10 · 7 holders which blocks → PBT COMMUNICATIONS, INC. - SC 3453 SALUDA SC
2010-03-11 864-434 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 GREENVILLE SC
2010-02-16 864-256 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 TELECOM OF SOUTH CAROLINA, LLC - SC 7273 SPARTANBG SC
2010-01-18 864-436 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 GREENVILLE SC
2010-01-15 864-347 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 SPARTANBG SC
2009-12-29 864-435 0–9 XXXall 10 · 4 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 SPARTANBG 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.