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
2018-08-21 737-637 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C THORNDTHRL TX
2018-08-21 737-727 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - TX 903C MCDADE TX
2018-08-21 737-837 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C TAYLOR TX
2018-08-21 825-528 not yet reported which blocks → Videotron Ltd. 383F Penhold —
2018-08-21 825-529 not yet reported which blocks → Videotron Ltd. 383F Sylvan Lake —
2018-08-21 951-470 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ARLINGTON CA
2018-08-20 336-800 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - NC 638E QUAKER GAP NC
2018-08-20 336-810 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - NC 638E TIMBERLAKE NC
2018-08-20 438-358 not yet reported which blocks → Bell Mobility 6574 Montreal —
2018-08-20 438-420 not yet reported which blocks → Bell Mobility 6574 Montreal —
2018-08-20 469-504 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
2018-08-20 470-394 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J ATLANTA NE GA
2018-08-20 515-474 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WINTERSET IA
2018-08-20 540-410 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - VA 138E STONE MT VA
2018-08-20 587-371 not yet reported which blocks → Bell Mobility 6574 Calgary —
2018-08-20 587-397 not yet reported which blocks → Bell Mobility 6574 Calgary —
2018-08-20 651-359 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MN 5256 RED WING MN
2018-08-20 680-200 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NORTH ROSE NY
2018-08-20 680-205 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E FAYETTE NY
2018-08-20 712-717 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - IA 221F SIOUX CITY IA
2018-08-20 803-866 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - SC 548E OLAR SC
2018-08-20 804-531 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - VA 138E MCKENNEY VA
2018-08-17 209-488 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 MODESTO CA
2018-08-17 365-822 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Milton —
2018-08-17 579-445 not yet reported which blocks → Cooptel 818D St-Aime —
2018-08-17 579-688 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 St-Jerome —
2018-08-17 581-850 not yet reported which blocks → Videotron Ltd. 8306 La Malbaie —
2018-08-17 646-969 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NWYRCYZN01 NY
2018-08-17 825-400 not yet reported which blocks → TELUS 8084 Edmonton —
2018-08-17 863-250 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C LAKELAND FL
2018-08-17 863-270 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - FL 937C LAKE WALES FL
2018-08-17 863-900 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - FL 937C HAINESCITY FL
2018-08-17 916-516 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 SCRM MAIN CA
2018-08-17 929-486 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN07 NY
2018-08-17 941-909 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - FL 937C BRADENTON FL
2018-08-17 941-919 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - FL 937C MYAKKA FL
2018-08-17 949-490 0–9 XXXall 10 · 7 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 IRVINE CA
2018-08-17 971-990 0–9 XXXall 10 · 4 holders which blocks → INVOXIO INCORPORATED 158H PORTLAND OR
2018-08-16 407-686 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 KISSIMMEE FL
2018-08-16 423-560 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TN 525E ERWIN TN
2018-08-16 423-770 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - TN 525E CHURCHHILL TN
2018-08-16 551-284 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - NJ 637C RIDGEWOOD NJ
2018-08-16 581-660 not yet reported which blocks → Videotron Ltd. 8306 Rimouski —
2018-08-16 661-439 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 BKFD MAIN CA
2018-08-16 929-485 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN10 NY
2018-08-15 205-539 0–9 XXXall 10 · 4 holders which blocks → AIRUS, INC. - AL 476H TUSCALOOSA AL
2018-08-15 223-206 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - PA 547E FAYETTEVL PA
2018-08-15 223-207 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E COLUMBIA PA
2018-08-15 223-208 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - PA 547E LEWISTOWN PA
2018-08-15 267-896 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA

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.