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
2020-10-15 715-956 9XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 EAU CLAIRE WI
2020-10-15 720-760 0–9 XXXall 10 · 4 holders which blocks → TWILIO INTERNATIONAL, INC. 506J DENVER CO
2020-10-15 763-340 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E TWINCITIES MN
2020-10-15 870-790 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AR 5179 JONESBORO AR
2020-10-15 920-512 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 APPLETON WI
2020-10-15 925-489 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ANTIOCH CA
2020-10-14 202-968 0–9 XXXall 10 · 3 holders which blocks → HD CARRIER LLC 321J WSHNGTNZN1 DC
2020-10-14 213-541 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MONTEBELLO CA
2020-10-14 217-939 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WINCHESTER IL
2020-10-14 218-559 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - MN 184D PEQUOT LKS MN
2020-10-14 219-266 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - IN 097D LA PORTE IN
2020-10-14 219-268 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - IN 097D MICHIGANCY IN
2020-10-14 260-270 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - IN 097D GENEVA IN
2020-10-14 260-276 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - IN 097D WATERLOO IN
2020-10-14 313-591 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E DETROITZN3 MI
2020-10-14 343-454 not yet reported which blocks → Fibernetics Corporation 464D Alfred —
2020-10-14 343-455 not yet reported which blocks → Fibernetics Corporation 464D Clarence Creek —
2020-10-14 343-456 not yet reported which blocks → Fibernetics Corporation 464D Embrun —
2020-10-14 343-457 not yet reported which blocks → Fibernetics Corporation 464D Plantagenet —
2020-10-14 343-458 not yet reported which blocks → Fibernetics Corporation 464D Rockland —
2020-10-14 343-573 not yet reported which blocks → Bell Mobility 6574 Ottawa-Hull —
2020-10-14 346-445 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 CYPRESS TX
2020-10-14 417-510 0XXX1XXX2XXX3XXX4XXX5XXX · 3 holders which blocks → ONVOY, LLC - MO 093F LOCKWOOD MO
2020-10-14 431-278 not yet reported which blocks → Bell Mobility 6574 Winnipeg —
2020-10-14 463-243 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - IN 097D WESTFIELD IN
2020-10-14 463-244 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - IN 097D BARGERSVL IN
2020-10-14 551-348 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H LEONIA NJ
2020-10-14 551-388 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H BAYONNE NJ
2020-10-14 551-786 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H UNION CITY NJ
2020-10-14 551-946 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H HACKENSACK NJ
2020-10-14 559-518 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-10-14 607-922 0XXX1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H ROXBURY NY
2020-10-14 682-428 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C FORT WORTH TX
2020-10-14 856-724 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H MOORESTOWN NJ
2020-10-14 862-355 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H POMPTONLKS NJ
2020-10-14 862-786 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H ORANGE NJ
2020-10-14 862-822 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H NEWARK NJ
2020-10-14 908-677 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H ELIZABETH NJ
2020-10-14 930-223 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 5 holders which blocks → ONVOY, LLC - IN 097D CRANDALL IN
2020-10-14 930-225 2XXX5XXX6XXX · 2 holders which blocks → ONVOY, LLC - IN 097D FREETOWN IN
2020-10-14 930-230 0XXX1XXX2XXX · 2 holders which blocks → ONVOY, LLC - IN 097D GUILFORD IN
2020-10-14 934-724 0–9 XXXall 10 · 8 holders which blocks → FRACTEL, LLC 965H MONTAUK PT NY
2020-10-14 959-895 0–9 XXXall 10 · 4 holders which blocks → TWILIO INTERNATIONAL, INC. 506J HARTFORD CT
2020-10-13 218-622 0XXX1XXX2XXX3XXX4XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H BENNETTVL MN
2020-10-13 218-899 0XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H WRIGHT MN
2020-10-13 218-933 3XXX9XXX · 2 holders which blocks → FRACTEL, LLC 965H NEVIS MN
2020-10-13 218-944 4XXX7XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H KARLSTAD MN
2020-10-13 223-797 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HARISBGZN1 PA
2020-10-13 310-810 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CMTN CMTN CA
2020-10-13 320-466 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → FRACTEL, LLC 965H AVON MN

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.