NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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 21
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
2021-01-22 213-772 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - CA 649C LSAN DA 02 CA
2021-01-22 229-278 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - GA 067D ARLINGTON GA
2021-01-22 229-568 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - GA 067D BACONTON GA
2021-01-22 229-688 0XXX1XXX2XXX3XXX4XXX6XXX · 4 holders which blocks → ONVOY, LLC - GA 067D LUMPKIN GA
2021-01-22 229-708 2XXX3XXX6XXX7XXX · 2 holders which blocks → ONVOY, LLC - GA 067D NEWTON GA
2021-01-22 229-718 2XXX3XXX which blocks → ONVOY, LLC - GA 067D SPARKS GA
2021-01-22 249-650 not yet reported which blocks → Fibernetics Corporation 464D North Bay —
2021-01-22 249-651 not yet reported which blocks → Fibernetics Corporation 464D Sudbury —
2021-01-22 251-350 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AL 604E BAYMINETTE AL
2021-01-22 256-908 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H FRUITHURST AL
2021-01-22 262-445 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - WI 225C KENOSHA WI
2021-01-22 272-722 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H CLARKSSMMT PA
2021-01-22 279-278 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - CA 649C FOLSOM CA
2021-01-22 331-399 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H DOWNERSGRV IL
2021-01-22 346-810 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C DICKINSON TX
2021-01-22 478-368 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - GA 067D SARDIS GA
2021-01-22 478-378 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - GA 067D WADLEY GA
2021-01-22 571-668 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - VA 138E WSNGTNZN19 VA
2021-01-22 575-345 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H CANNON AFB NM
2021-01-22 619-927 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C CHULAVISTA CA
2021-01-22 701-670 0–9 XXXall 10 · 3 holders which blocks → COMPUTER TELEPHONY INNOVATIONS INC. DBA VOXTELESYS 597J GRANDFORKS ND
2021-01-22 754-764 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C HOLLYWOOD FL
2021-01-22 762-288 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D APPLING GA
2021-01-22 848-668 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NJ 637C NEWBRNSWCK NJ
2021-01-22 862-682 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NJ 637C NEWARK NJ
2021-01-22 945-745 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - TX 903C ROYSE CITY TX
2021-01-22 956-629 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 LAREDO TX
2021-01-22 956-697 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C PORTISABEL TX
2021-01-22 956-856 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H WESLACO TX
2021-01-22 984-322 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NC 638E CHAPELHILL NC
2021-01-21 208-592 1XXX which blocks → MIDVALE TELEPHONE EXCHANGE, INC. 2226 MIDVALE ID
2021-01-21 208-594 1XXX which blocks → MIDVALE TELEPHONE EXCHANGE, INC. 2226 STANLEY ID
2021-01-21 223-248 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 MCONELLSBG PA
2021-01-21 226-742 not yet reported which blocks → Fibernetics Corporation 464D Galt —
2021-01-21 226-743 not yet reported which blocks → Fibernetics Corporation 464D Hespeler —
2021-01-21 240-885 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - MD 876D WSNGTNZN10 MD
2021-01-21 254-852 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H CISCO TX
2021-01-21 321-655 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C MELBOURNE FL
2021-01-21 437-508 not yet reported which blocks → Bell Mobility 6574 Toronto —
2021-01-21 438-249 not yet reported which blocks → Bell Mobility 6574 Montreal —
2021-01-21 515-667 0XXX2XXX3XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H GOWRIE IA
2021-01-21 561-668 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H DELRAY BCH FL
2021-01-21 603-514 0–9 XXXall 10 · 5 holders which blocks → BELL ATLANTIC MOBILE, INC 6386 NASHUA NH
2021-01-21 641-516 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 MARSHALLTN IA
2021-01-21 661-922 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H DELANO CA
2021-01-21 720-736 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - CO 026D DENVER CO
2021-01-21 754-356 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H HOLLYWOOD FL
2021-01-21 802-809 0XXX1XXX3XXX4XXX8XXX9XXX · 3 holders which blocks → HD CARRIER LLC 321J BURLINGTON VT
2021-01-21 825-428 not yet reported which blocks → Bell Mobility 6574 Calgary —
2021-01-21 916-906 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FOLSOM CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.