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
2021-03-12 712-572 1XXX2XXX4XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - IA 221F HARLAN IA
2021-03-12 814-956 0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 PUNXSUTWNY PA
2021-03-12 820-336 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H GUADALUPE CA
2021-03-12 864-768 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SPARTANBG SC
2021-03-12 929-573 0–9 XXXwhole prefix which blocks → PAETEC ITEL, LLC 829J NWYRCYZN06 NY
2021-03-11 209-921 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H STOCKTON CA
2021-03-11 413-910 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - MA 892D SPRINGFLD MA
2021-03-11 442-354 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 BRAWLEY CA
2021-03-11 505-457 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 GALLUP NM
2021-03-11 563-294 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → AIRUS, INC - IA 423H WEST UNION IA
2021-03-11 610-424 0–9 XXXwhole prefix which blocks → ONVOY, LLC - PA 547E ALLENTOWN PA
2021-03-11 636-270 0XXX2XXX3XXX8XXX · 2 holders which blocks → ONVOY, LLC - MO 093F WARE MO
2021-03-11 636-280 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - MO 093F EUREKA MO
2021-03-11 636-369 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - MO 093F WASHINGTON MO
2021-03-11 725-246 0–9 XXXall 10 · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J LAS VEGAS NV
2021-03-11 762-279 0–9 XXXall 10 · 7 holders which blocks → TON80 COMMUNICATIONS, LLC 516J THOMSON GA
2021-03-11 762-654 1XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J GREENVILLE GA
2021-03-11 814-997 0–9 XXXall 10 · 6 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 DUBOIS PA
2021-03-11 820-203 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ATASCADERO CA
2021-03-11 840-201 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 FONTANA CA
2021-03-11 857-810 0–9 XXXwhole prefix which blocks → ONVOY, LLC - MA 892D BOSTON MA
2021-03-11 858-313 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 DEL MAR CA
2021-03-11 928-898 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AZ 630E KINGMAN AZ
2021-03-11 936-316 1XXX6XXX · 2 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K GRAPELAND TX
2021-03-11 949-997 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H TRABUCO CA
2021-03-10 206-670 0–9 XXXall 10 · 5 holders which blocks → STRATUS NETWORKS 495J SEATTLE WA
2021-03-10 209-706 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LINDEN CA
2021-03-10 213-497 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 05 CA
2021-03-10 253-296 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
2021-03-10 332-282 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NWYRCYZN01 NY
2021-03-10 434-697 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CROZET VA
2021-03-10 442-377 0XXX1XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H BAKER CA
2021-03-10 442-789 0XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H WELDON CA
2021-03-10 445-323 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PHLDLPHZN4 PA
2021-03-10 484-215 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 ALLENTOWN PA
2021-03-10 530-944 0XXX1XXX4XXX · 2 holders which blocks → FRACTEL, LLC 965H WILLOW CRK CA
2021-03-10 531-258 2XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SO GREGORY NE
2021-03-10 564-444 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H VANCOUVER WA
2021-03-10 669-386 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H SNJS NORTH CA
2021-03-10 669-842 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H SNJS SOUTH CA
2021-03-10 712-742 0XXX2XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - IA 221F PAULLINA IA
2021-03-10 802-303 0XXX1XXX3XXX4XXX9XXX · 4 holders which blocks → ONVOY, LLC - VT 451F POULTNEY VT
2021-03-10 802-667 0XXX1XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - VT 451F SWANTON VT
2021-03-10 804-547 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J ASHLAND VA
2021-03-10 814-936 0XXX2XXX3XXX4XXX6XXX8XXX9XXX · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 BROOKVILLE PA
2021-03-10 858-308 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 SNDG LVTA CA
2021-03-10 870-795 0XXX1XXX5XXX7XXX9XXX · 4 holders which blocks → COMCAST IP PHONE, LLC 318J PARKIN AR
2021-03-10 980-347 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONROE NC
2021-03-09 224-375 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALGONQUIN IL
2021-03-09 269-292 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 SOUTHHAVEN MI

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.