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
2021-01-04 914-676 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC- NY 384C ARMONK VLG NY
2021-01-04 934-935 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC- NY 384C AMAGANSETT NY
2021-01-04 936-363 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C CONROE TX
2021-01-04 949-778 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H SADLBK VLY CA
2021-01-04 979-379 0–9 XXXall 10 · 7 holders which blocks → ONVOY SPECTRUM, LLC 624H CLTLKJCKSN TX
2020-12-31 256-873 0–9 XXXall 10 · 8 holders which blocks → ONVOY, LLC - AL 604E ATTALLA AL
2020-12-31 405-874 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OK 409F NOBLE OK
2020-12-31 405-914 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OK 409F NORMAN OK
2020-12-31 515-534 0XXX1XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - IA 985E STUART IA
2020-12-31 539-255 0XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → ONVOY, LLC - OK 409F PICHER OK
2020-12-31 629-247 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 MURFREESBO TN
2020-12-31 659-216 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - AL 604E EUTAW AL
2020-12-31 720-784 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CO 026D GEORGETOWN CO
2020-12-31 838-388 0–9 XXXall 10 · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H BERNE NY
2020-12-31 838-883 0XXX1XXX3XXX8XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H CASTLETON NY
2020-12-31 934-600 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC- NY 384C JAMESPORT NY
2020-12-30 206-649 0–9 XXXwhole prefix which blocks → ONVOY, LLC - WA 483E SEATTLE WA
2020-12-30 352-695 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - FL 937C SANANTONIO FL
2020-12-30 437-636 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-12-30 438-416 not yet reported which blocks → Bell Mobility 6574 Montreal —
2020-12-30 438-563 not yet reported which blocks → Bell Mobility 6574 Montreal —
2020-12-30 442-667 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → FRACTEL, LLC 965H INYOKERN CA
2020-12-30 561-587 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2020-12-30 719-665 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - CO 026D LAKEGEORGE CO
2020-12-30 762-269 0–9 XXXall 10 · 6 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K SPARTA GA
2020-12-30 912-542 0–9 XXXall 10 · 8 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E CLAXTON GA
2020-12-30 970-796 0XXX3XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - CO 026D OTIS CO
2020-12-29 229-910 0XXX9XXX · 2 holders which blocks → ONVOY, LLC - GA 067D REBECCA GA
2020-12-29 435-278 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 ENTERPRISE UT
2020-12-29 437-282 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-12-29 437-283 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-12-29 437-635 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-12-29 438-415 not yet reported which blocks → Bell Mobility 6574 Montreal —
2020-12-29 470-792 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATLANTA GA
2020-12-29 478-341 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E EASTMAN GA
2020-12-29 762-910 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 3 holders which blocks → ONVOY, LLC - GA 067D BLAIRSVL GA
2020-12-29 762-920 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - GA 067D CARLTON GA
2020-12-29 912-910 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D RICHMONDHL GA
2020-12-28 213-547 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 LSAN DA 01 CA
2020-12-28 256-862 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - AL 604E ANNISTON AL
2020-12-28 256-865 0XXX1XXX3XXX4XXX6XXX7XXX · 5 holders which blocks → ONVOY, LLC - AL 604E ASHLAND AL
2020-12-28 256-871 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - AL 604E ATHENS AL
2020-12-28 341-465 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H FRNK MAIN CA
2020-12-28 346-452 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CYPRESS TX
2020-12-28 352-913 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - FL 937C WILDWOOD FL
2020-12-28 352-914 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - FL 937C WILLISTON FL
2020-12-28 469-936 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F PRINCETON TX
2020-12-28 561-583 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2020-12-28 626-669 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H EL MONTE CA
2020-12-28 626-887 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H SNGBLCNN 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.