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
2020-10-20 365-350 not yet reported which blocks → IXICA Communications Inc. 812H Fort Erie —
2020-10-20 515-895 0–9 XXXall 10 · 3 holders which blocks → TWILIO INTERNATIONAL, INC. 506J DES MOINES IA
2020-10-20 517-261 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRANDLEDGE MI
2020-10-20 573-993 0XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - MO 093F CLARKSVL MO
2020-10-20 765-514 0XXX1XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → ONVOY, LLC - IN 097D ROSSVILLE IN
2020-10-20 765-604 1XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → ONVOY, LLC - IN 097D LAPEL IN
2020-10-20 782-444 not yet reported which blocks → IXICA Communications Inc. 812H Halifax —
2020-10-20 782-666 not yet reported which blocks → IXICA Communications Inc. 812H Halifax —
2020-10-20 810-204 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLCV - MI 543C PORT HURON MI
2020-10-20 912-612 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - GA 067D FOLKSTON GA
2020-10-20 920-518 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 DE PERE WI
2020-10-20 930-219 0XXX1XXX2XXX4XXX5XXX8XXX · 2 holders which blocks → ONVOY, LLC - IN 097D DILLSBORO IN
2020-10-20 930-224 0XXX1XXX2XXX4XXX5XXX · 4 holders which blocks → ONVOY, LLC - IN 097D PATRIOT IN
2020-10-19 236-314 not yet reported which blocks → Iristel Inc. 154E Hope —
2020-10-19 308-373 2XXX7XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SUMNER NE
2020-10-19 314-464 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - MO 093F OAKVILLE MO
2020-10-19 401-895 0–9 XXXall 10 · 3 holders which blocks → TWILIO INTERNATIONAL, INC. 506J PROVIDENCE RI
2020-10-19 417-607 0XXX2XXX6XXX7XXX · 2 holders which blocks → ONVOY, LLC - MO 093F MANO MO
2020-10-19 417-617 0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - MO 093F KIMBELNGCY MO
2020-10-19 470-684 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E CARTERSVL GA
2020-10-19 506-315 not yet reported which blocks → Iristel Inc. 154E Edmundston —
2020-10-19 520-758 6XXX which blocks → FRACTEL, LLC 965H BLACKWATER AZ
2020-10-19 520-966 3XXX6XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H SILVERBELL AZ
2020-10-19 573-572 0XXX2XXX3XXX · 2 holders which blocks → ONVOY, LLC - MO 093F LEASBURG MO
2020-10-19 573-877 7XXX8XXX which blocks → ONVOY, LLC - MO 093F VICHY MO
2020-10-19 581-947 not yet reported which blocks → TELUS Quebec 2243 Cap-aux-Meules —
2020-10-19 669-303 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SNJS SOUTH CA
2020-10-19 681-295 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F PRKRSBGZN1 WV
2020-10-19 682-338 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ARLINGTON TX
2020-10-19 707-854 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 EUREKA CA
2020-10-19 762-261 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E COLUMBUS GA
2020-10-19 769-249 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MERIDIAN MS
2020-10-19 782-333 not yet reported which blocks → IXICA Communications Inc. 812H Truro —
2020-10-19 782-577 not yet reported which blocks → Fibernetics Corporation 464D Liverpool —
2020-10-19 782-578 not yet reported which blocks → Fibernetics Corporation 464D Sackville —
2020-10-19 782-579 not yet reported which blocks → Fibernetics Corporation 464D Springfield —
2020-10-19 782-580 not yet reported which blocks → Fibernetics Corporation 464D Windsor —
2020-10-19 782-581 not yet reported which blocks → Fibernetics Corporation 464D Wolfville —
2020-10-19 816-828 0XXX1XXX2XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → ONVOY, LLC - MO 093F DE KALB MO
2020-10-19 863-275 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E LAKE WALES FL
2020-10-19 904-658 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E GREENCVSPG FL
2020-10-19 909-905 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 CLAREMONT CA
2020-10-19 909-914 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E DIAMONDBAR CA
2020-10-19 916-885 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 SCRM NORTH CA
2020-10-19 936-955 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C LUFKIN TX
2020-10-19 949-694 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - CA 649C TRABUCO CA
2020-10-19 956-596 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 BROWNSVL TX
2020-10-19 956-597 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F DONNA TX
2020-10-19 956-957 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - TX 903C EDINBURG TX
2020-10-16 209-741 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ATWATER CA

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.