NumberResearch Membership · Data 09/22/2026

Recent prefix assignments

354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026

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. 39
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 20
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
2002-02-05 956-579 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → SOUTHWESTERN BELL 9533 BROWNSVL TX
2002-02-04 618-310 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 BELLEVILLE IL
2002-02-04 618-360 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ILLINOIS BELL TEL CO 9329 HARMONY IL
2002-02-04 618-421 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROBINSON IL
2002-02-04 618-579 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 MARION IL
2002-02-04 618-610 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANITE CY IL
2002-02-04 715-578 0XXX1XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 MENOMONIE WI
2002-02-04 720-427 not yet reported which blocks → T-MOBILE USA, INC. 6529 DENVER CO
2002-02-04 734-225 0–9 XXXall 10 · 8 holders which blocks → WOW! INTERNET, CABLE AND PHONE 961J WYANDOTTE MI
2002-02-04 734-565 not yet reported which blocks → MICHIGAN BELL TEL CO 9323 ANN ARBOR MI
2002-02-04 815-209 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROCKFORD IL
2002-02-04 815-215 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → FIRST COMMUNICATIONS, LLC 460K NEW LENOX IL
2002-02-04 815-410 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LA SALLE IL
2002-02-04 815-515 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WATSEKA IL
2002-02-03 660-386 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MO 4932 BUTLER MO
2002-02-01 484-620 2XXX3XXX4XXX5XXX7XXX which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHPHSBZN26 PA
2002-02-01 609-675 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 WILDWOOD NJ
2002-02-01 609-878 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - NJ 118F HAMMONTON NJ
2002-02-01 646-299 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2002-02-01 714-617 0–9 XXXall 10 · 7 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K SANTA ANA CA
2002-02-01 843-291 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 MONCKS COR SC
2002-02-01 914-426 5XXX8XXX which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 WSCHSTZN09 NY
2002-01-31 204-399 not yet reported which blocks → TELUS Mobility 8303 Winnipeg —
2002-01-31 205-285 0–9 XXXall 10 · 5 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K GARDENDALE AL
2002-01-31 205-341 0XXX1XXX2XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J DORA AL
2002-01-31 205-433 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J GRAYSVILLE AL
2002-01-31 256-391 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 SYLACAUGA AL
2002-01-31 256-414 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 ALEXANDRCY AL
2002-01-31 321-329 0–9 XXXall 10 · 5 holders which blocks → SMART CITY SOLUTIONS II, LLC DBA SMART CITY METRO 8105 REEDYCREEK FL
2002-01-31 478-284 0XXX2XXX3XXX4XXX5XXX6XXX · 2 holders which blocks → METROPCS, INC. 5562 MACON GA
2002-01-31 512-269 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 TAYLOR TX
2002-01-31 646-276 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → VERIZON NEW YORK, INC. 9104 NWYRCYZN01 NY
2002-01-31 712-455 not yet reported which blocks → COMMCHOICE OF IOWA, LLC 4092 WHITING IA
2002-01-31 865-295 not yet reported which blocks → PAETEC ITEL, LLC 829J HARRIMAN TN
2002-01-31 928-225 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 FLAGSTAFF AZ
2002-01-30 205-279 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BIRMINGHAM AL
2002-01-30 517-775 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LANSING MI
2002-01-30 518-375 0XXX2XXX3XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 ALBANY NY
2002-01-30 620-560 1XXX2XXX3XXX4XXX5XXX7XXX which blocks → SOUTHWESTERN BELL 9533 HUTCHINSON KS
2002-01-30 716-602 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BUFFALO NY
2002-01-30 716-603 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BUFFALO NY
2002-01-30 785-813 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 LAWRENCE KS
2002-01-30 785-817 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TOPEKA KS
2002-01-30 786-446 8XXX9XXX which blocks → PAETEC ITEL, LLC 829J HOMESTEAD FL
2002-01-30 843-344 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 GEORGETOWN SC
2002-01-29 209-256 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 JACKSON CA
2002-01-29 209-261 1XXX which blocks → T-MOBILE USA, INC. 6529 MERCED CA
2002-01-29 214-432 not yet reported which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2002-01-29 323-369 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LSAN DA 09 CA
2002-01-29 323-445 none assigned yet which blocks → METROPCS NETWORKS, LLC 899D LSAN DA 14 CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.