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
2011-05-17 513-222 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-05-17 612-200 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E TWINCITIES MN
2011-05-17 614-597 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 COLUMBUS OH
2011-05-17 818-962 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BRBN SNVY CA
2011-05-17 819-649 not yet reported which blocks → Bell Mobility 6574 Rouyn-Noranda —
2011-05-17 819-651 not yet reported which blocks → Bell Mobility 6574 Val-D'Or —
2011-05-17 864-326 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F GREENVILLE SC
2011-05-17 940-601 not yet reported which blocks → CHOICE WIRELESS, LC 3533 BOWIE TX
2011-05-17 940-602 not yet reported which blocks → CHOICE WIRELESS, LC 3533 BURKBURNTT TX
2011-05-17 940-603 not yet reported which blocks → CHOICE WIRELESS, LC 3533 HENRIETTA TX
2011-05-17 940-605 not yet reported which blocks → CHOICE WIRELESS, LC 3533 WICHITAFLS TX
2011-05-16 226-986 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Kitchener-Waterloo —
2011-05-16 226-987 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Kitchener-Waterloo —
2011-05-16 231-303 0–9 XXXall 10 · 8 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E NEWAYGO MI
2011-05-16 248-602 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 TROY MI
2011-05-16 267-648 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHLDLPHZN2 PA
2011-05-16 289-781 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 St. Catharines-Thorold —
2011-05-16 289-782 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 St. Catharines-Thorold —
2011-05-16 289-783 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 St. Catharines-Thorold —
2011-05-16 443-289 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 7228 WESTMINSTR MD
2011-05-16 570-599 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 HAZLETON PA
2011-05-16 646-553 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NWYRCYZN01 NY
2011-05-16 705-991 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Peterborough —
2011-05-16 717-743 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HARISBGZN1 PA
2011-05-16 810-553 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 FLINT MI
2011-05-16 828-623 0–9 XXXall 10 · 6 holders which blocks → AT&T ENTERPRISES, LLC 516C CAROLEEN NC
2011-05-16 832-470 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2011-05-16 940-604 not yet reported which blocks → CHOICE WIRELESS, LC 3533 WICHITAFLS TX
2011-05-13 248-278 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 SOUTH LYON MI
2011-05-13 281-407 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HOUSTON TX
2011-05-13 289-972 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Dunnville —
2011-05-13 289-973 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Dunnville —
2011-05-13 305-340 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 KEYS FL
2011-05-13 318-369 0–9 XXXwhole prefix which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 MONROE LA
2011-05-13 334-200 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 DOTHAN AL
2011-05-13 352-431 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 LEESBURG FL
2011-05-13 404-809 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2011-05-13 404-913 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E ATLANTA GA
2011-05-13 407-223 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 ORLANDO FL
2011-05-13 407-335 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WINTERPARK FL
2011-05-13 469-250 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K DALLAS TX
2011-05-13 469-647 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K IRVING TX
2011-05-13 470-315 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E CARTERSVL GA
2011-05-13 470-345 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA NE GA
2011-05-13 470-765 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 GRIFFIN GA
2011-05-13 470-798 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E FLOWEYBRCH GA
2011-05-13 561-232 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2011-05-13 571-447 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN08 VA
2011-05-13 613-414 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Smiths Falls —
2011-05-13 613-840 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Kingston —

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.