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
2018-10-11 786-638 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 KEYS FL
2018-10-11 804-956 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RICHMOND VA
2018-10-11 813-550 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TAMPACEN FL
2018-10-11 813-599 0–9 XXXall 10 · 2 holders which blocks → INVOXIO INCORPORATED 158H TAMPACEN FL
2018-10-11 825-398 not yet reported which blocks → TELUS 8084 Banff —
2018-10-11 929-495 0–9 XXXwhole prefix which blocks → NUSO, LLC 551G NWYRCYZN11 NY
2018-10-11 929-510 0–9 XXXall 10 · 6 holders which blocks → NUSO, LLC 551G NWYRCYZN08 NY
2018-10-11 930-208 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D HENRYVILLE IN
2018-10-11 949-516 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LAGUNA BCH CA
2018-10-11 952-213 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MN 5256 NORWOOD MN
2018-10-11 970-973 0–9 XXXall 10 · 7 holders which blocks → T-MOBILE USA, INC. 6529 GLENWD SPG CO
2018-10-10 304-996 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF WEST VIRGINIA, LLC - WV 928H KINGWOOD WV
2018-10-10 309-519 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROCKISLAND IL
2018-10-10 352-770 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - FL 937C CRYSTALRIV FL
2018-10-10 352-780 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - FL 937C SLRSPGSHRS FL
2018-10-10 469-497 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K PLANO TX
2018-10-10 516-614 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NASSAUZN01 NY
2018-10-10 567-861 0–9 XXXwhole prefix which blocks → ONVOY, LLC - OH 464C TOLEDO OH
2018-10-10 605-615 not yet reported which blocks → NATIVE AMERICAN TELECOM - PINE RIDGE LLC - SD 870F PINE RIDGE SD
2018-10-10 725-210 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LAS VEGAS NV
2018-10-10 929-494 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN08 NY
2018-10-10 936-283 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 CONROE TX
2018-10-09 236-622 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Abbotsford —
2018-10-09 307-487 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 6566 GILLETTE WY
2018-10-09 385-295 0–9 XXXall 10 · 5 holders which blocks → FIRSTDIGITAL COMMUNICATIONS, LLC 716D SALT LAKE UT
2018-10-09 458-237 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - OR 750E ODELL OR
2018-10-09 613-428 not yet reported which blocks → Videotron Ltd. 383F Deseronto —
2018-10-09 825-399 not yet reported which blocks → TELUS 8084 Lethbridge —
2018-10-09 910-781 0XXX1XXX2XXX3XXX8XXX · 4 holders which blocks → ONVOY, LLC - NC 638E BEULAVILLE NC
2018-10-09 920-808 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F OSHKOSH WI
2018-10-08 504-370 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E LAFITTE LA
2018-10-08 515-732 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2018-10-08 530-561 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANDERSON CA
2018-10-08 608-540 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOLMEN WI
2018-10-08 779-260 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JOLIET IL
2018-10-08 813-521 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2018-10-08 813-537 0–9 XXXall 10 · 5 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPAWST FL
2018-10-08 828-463 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 ENKACANDLR NC
2018-10-08 947-521 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2018-10-05 206-513 0–9 XXXall 10 · 5 holders which blocks → AIRESPRING, INC. 996H SEATTLE WA
2018-10-05 360-228 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 BREMERTON WA
2018-10-05 475-255 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MERIDEN CT
2018-10-05 531-226 0–9 XXXwhole prefix which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J OMAHA NE
2018-10-05 843-977 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - SC 548E NICHOLS SC
2018-10-04 236-459 not yet reported which blocks → Videotron Ltd. 383F Port Edward —
2018-10-04 309-506 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 ROCKISLAND IL
2018-10-04 346-367 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TOMBALL TX
2018-10-04 431-896 not yet reported which blocks → Westman Media Cooperative Ltd 120F McCreary —
2018-10-04 431-897 not yet reported which blocks → Westman Media Cooperative Ltd 120F Sandy Lake —
2018-10-04 431-898 not yet reported which blocks → Westman Media Cooperative Ltd 120F St. Lazare —

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.