NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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 28
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
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
2016-02-25 502-206 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - KY 896E GHENT KY
2016-02-25 682-385 0XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 FORT WORTH TX
2016-02-25 734-201 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLCV - MI 543C DEXTER MI
2016-02-25 786-831 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 MIAMI FL
2016-02-25 786-847 0–9 XXXall 10 · 7 holders which blocks → METROPCS, INC. 5562 KEYS FL
2016-02-25 803-590 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - SC 548E CHPNLTLMTS SC
2016-02-25 810-206 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLCV - MI 543C BRIGHTON MI
2016-02-25 873-804 not yet reported which blocks → Iristel Inc. 154E Trois-Rivieres —
2016-02-25 873-823 not yet reported which blocks → Videotron Ltd. 8306 Weedon —
2016-02-25 873-824 not yet reported which blocks → Videotron Ltd. 8306 St-Sebastien (Frontenac Co.) —
2016-02-25 904-719 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 JACKSONVL FL
2016-02-25 910-387 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NC 638E ROCKINGHAM NC
2016-02-24 224-487 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC 224C CARY IL
2016-02-24 240-570 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - MD 876D ASHTON238 MD
2016-02-24 302-775 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - DE 969E SELBYVILLE DE
2016-02-24 314-356 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 ST LOUIS MO
2016-02-24 346-387 0–9 XXXall 10 · 4 holders which blocks → ETS TELEPHONE COMPANY, INC. 2091 KATY TX
2016-02-24 401-618 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - RI 977E CENTREDALE RI
2016-02-24 405-832 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C BRITTON OK
2016-02-24 424-306 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C TORRANCE CA
2016-02-24 442-201 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - CA 649C LEE VINING CA
2016-02-24 470-284 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - GA 067D VILLA RICA GA
2016-02-24 470-892 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 GAINESVL GA
2016-02-24 502-907 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 LOUISVILLE KY
2016-02-24 616-201 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLCV - MI 543C GRANDHAVEN MI
2016-02-24 707-917 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - CA 649C VALLEJO CA
2016-02-24 747-205 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C NO HOLLYWD CA
2016-02-24 904-760 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 JACKSONVL FL
2016-02-24 913-246 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF KANSAS, LLC - KS 018H ATCHISON KS
2016-02-24 929-218 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN10 NY
2016-02-24 931-414 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MCMINNVL TN
2016-02-24 949-312 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CAPITRNVLY CA
2016-02-23 213-318 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 10 CA
2016-02-23 217-200 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J CHAMPAURBN IL
2016-02-23 217-716 0XXX1XXX2XXX6XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CARLINVL IL
2016-02-23 386-270 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C FLAGLERBCH FL
2016-02-23 469-290 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C FORNEY TX
2016-02-23 562-474 0–9 XXXall 10 · 5 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K NORWALK CA
2016-02-23 567-314 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 8 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K FREMONT OH
2016-02-23 609-663 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 ALLENTOWN NJ
2016-02-23 803-877 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - SC 548E NEWBERRY SC
2016-02-23 901-586 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TN 525E ARLINGTON TN
2016-02-23 901-641 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TN 525E SOMERVILLE TN
2016-02-22 267-810 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E DOYLESTOWN PA
2016-02-22 337-609 0–9 XXXwhole prefix which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J LAFAYETTE LA
2016-02-22 475-275 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CT 639C BYRAM CT
2016-02-22 575-205 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NM 7464 TUCUMCARI NM
2016-02-22 734-577 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLCV - MI 543C WILLIS MI
2016-02-22 781-427 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - MA 892D NORWELL MA
2016-02-22 805-507 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C VNTRA CNTL CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.