NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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
2023-01-20 864-410 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F SPARTANBG SC
2022-12-29 864-830 0XXX1XXX3XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - SC 548E ABBEVILLE SC
2022-12-19 864-290 0–9 XXXall 10 · 6 holders which blocks → COMMIO, LLC 939H LYMAN SC
2022-11-17 864-824 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - SC 548E ANDERSON SC
2022-11-17 864-826 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - SC 548E EASLEY SC
2022-11-08 864-815 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAURENS SC
2022-11-01 864-856 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 4 holders which blocks → ONVOY, LLC - SC 548E HODGES SC
2022-10-28 864-265 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - SC 548E GREENWOOD SC
2022-09-27 864-524 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 SPARTANBG SC
2022-09-09 864-215 0XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → ONVOY, LLC - SC 548E UNION SC
2022-08-19 864-813 0–9 XXXall 10 · 4 holders which blocks → WOW! INTERNET, CABLE AND PHONE 961J GREENVILLE SC
2022-08-10 864-793 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAURESRURL SC
2022-08-10 864-820 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H GREENVILLE SC
2022-07-28 864-259 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GREENWOOD SC
2022-07-12 864-807 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 GREENVILLE SC
2022-07-05 864-798 7XXX8XXX9XXX · 2 holders which blocks → AT&T - LOCAL 7421 CLINTON SC
2022-04-22 864-796 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAURENS SC
2022-04-13 864-791 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 ANDERSON SC
2022-04-13 864-795 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CLEMSON SC
2022-03-15 864-790 0–9 XXXwhole prefix which blocks → SUNCOM DBA T-MOBILE USA 8645 ANDERSON SC
2022-03-09 864-789 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 SENECA SC
2022-02-23 864-665 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 SIMPSONVL SC
2022-02-17 864-317 0–9 XXXall 10 · 2 holders which blocks → PAETEC ITEL, LLC 829J GREENWOOD SC
2022-02-08 864-785 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F GAFFNEY SC
2022-02-03 864-667 0XXX1XXX2XXX3XXX6XXX7XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MOUNTVILLE SC
2022-01-31 864-927 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LAURENS SC
2022-01-26 864-966 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J FOUNTANINN SC
2022-01-20 864-536 0XXX7XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F ANTIOCH SC
2022-01-17 864-782 0XXX1XXX2XXX6XXX7XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WARESHOALS SC
2022-01-17 864-792 0XXX7XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LIBERTY SC
2022-01-13 864-783 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J GREER SC
2022-01-13 864-893 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WALHALLA SC
2021-12-14 864-779 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F PICKENS SC
2021-12-14 864-781 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F PIEDMONT SC
2021-11-18 864-759 0XXX1XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F BELTON SC
2021-11-18 864-765 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F CENTRAL SC
2021-11-18 864-769 0XXX1XXX2XXX3XXX8XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F PELZER SC
2021-11-18 864-771 0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F PENDLETON SC
2021-10-13 864-753 0–9 XXXall 10 · 4 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 SPARTANBG SC
2021-10-08 864-749 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ANDERSON SC
2021-09-08 864-748 0–9 XXXall 10 · 4 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J GREENVILLE SC
2021-09-08 864-822 0–9 XXXall 10 · 4 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J GREENWOOD SC
2021-08-25 864-745 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 ANDERSON SC
2021-07-14 864-744 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA SC- LLC 635C GREENVILLE SC
2021-06-22 864-743 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F BLUE RIDGE SC
2021-04-01 864-741 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 ANDERSON SC
2021-03-12 864-768 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SPARTANBG SC
2021-02-26 864-500 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GREENWOOD SC
2021-02-09 864-696 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H GREENVILLE SC
2021-02-08 864-837 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J GREENVILLE SC

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.