NumberResearch Membership · Data 09/28/2026

Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

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, last 30 days
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 19
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
2020-07-23 754-247 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 POMPANOBCH FL
2020-07-23 757-666 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - VA 138E ONANCOCK VA
2020-07-23 803-919 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SUMTER SC
2020-07-23 862-352 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D LIVINGSTON NJ
2020-07-23 873-258 not yet reported which blocks → ISP Telecom Inc. 4727 St-Guillaume —
2020-07-23 873-259 not yet reported which blocks → ISP Telecom Inc. 4727 Wickham —
2020-07-23 878-881 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E BROWNSVL PA
2020-07-23 984-766 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H KENLY NC
2020-07-23 984-842 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H LOUISBURG NC
2020-07-22 218-524 0–9 XXXall 10 · 3 holders which blocks → CSC WIRELESS, LLC 425J DULUTH MN
2020-07-22 251-328 0–9 XXXall 10 · 4 holders which blocks → CSC WIRELESS, LLC 425J MOBILE AL
2020-07-22 256-806 0–9 XXXall 10 · 3 holders which blocks → CSC WIRELESS, LLC 425J HUNTSVILLE AL
2020-07-22 272-500 0XXX1XXX2XXX3XXX5XXX6XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H BEACH LAKE PA
2020-07-22 272-600 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H CNYNGHDRMS PA
2020-07-22 309-719 1XXX8XXX · 2 holders which blocks → STRATUS NETWORKS 495J GALESBURG IL
2020-07-22 320-437 0XXX1XXX2XXX7XXX8XXX9XXX · 3 holders which blocks → CSC WIRELESS, LLC 425J ST CLOUD MN
2020-07-22 423-656 0–9 XXXall 10 · 5 holders which blocks → CSC WIRELESS, LLC 425J JOHNSON CY TN
2020-07-22 475-377 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H WATERBURY CT
2020-07-22 475-755 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H NORWALK CT
2020-07-22 475-758 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H NEW CANAAN CT
2020-07-22 475-766 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H NEW HAVEN CT
2020-07-22 475-877 0XXX1XXX2XXX3XXX5XXX7XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H REDDING CT
2020-07-22 475-977 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H STAMFORD CT
2020-07-22 507-718 0XXX1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → CSC WIRELESS, LLC 425J ROCHESTER MN
2020-07-22 551-321 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NJ 637C PARK RIDGE NJ
2020-07-22 551-381 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NJ 637C RUTHERFORD NJ
2020-07-22 629-241 0–9 XXXall 10 · 5 holders which blocks → CSC WIRELESS, LLC 425J NASHVILLE TN
2020-07-22 701-964 0–9 XXXall 10 · 3 holders which blocks → CSC WIRELESS, LLC 425J FARGO ND
2020-07-22 719-504 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PUEBLO CO
2020-07-22 803-769 0–9 XXXall 10 · 5 holders which blocks → CSC WIRELESS, LLC 425J COLUMBIA SC
2020-07-22 828-677 0XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → FRACTEL, LLC 965H BETHLEHEM NC
2020-07-22 828-786 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CLYDE NC
2020-07-22 828-866 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H BREVARD NC
2020-07-22 828-867 0XXX1XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → FRACTEL, LLC 965H MICAVILLE NC
2020-07-22 828-977 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → FRACTEL, LLC 965H ROBBINSVL NC
2020-07-22 848-312 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NJ 637C PERTHAMBOY NJ
2020-07-22 848-841 1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → ONVOY, LLC - NJ 637C SEASIDE PK NJ
2020-07-22 854-208 0–9 XXXall 10 · 4 holders which blocks → CSC WIRELESS, LLC 425J FLORENCE SC
2020-07-22 864-652 0–9 XXXall 10 · 3 holders which blocks → CSC WIRELESS, LLC 425J GREENVILLE SC
2020-07-22 908-921 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → ONVOY, LLC - NJ 637C STROUDSBG NJ
2020-07-22 910-966 0XXX5XXX6XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H NEWTON GRV NC
2020-07-22 928-374 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 WIKIEUP AZ
2020-07-22 952-295 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - MN 184D NORWOOD MN
2020-07-22 980-842 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H SHELBY NC
2020-07-22 984-677 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H ZEBULON NC
2020-07-22 984-788 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H WENDELL NC
2020-07-21 207-220 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - ME 454F OXFORD ME
2020-07-21 209-799 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H MODESTO CA
2020-07-21 229-461 0–9 XXXall 10 · 4 holders which blocks → CSC WIRELESS, LLC 425J ALBANY GA
2020-07-21 249-866 not yet reported which blocks → TELUS Mobility 8303 Parry Sound —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.