NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

334 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 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
2020-10-08 417-517 4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - MO 093F REEDS SPG MO
2020-10-08 434-445 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → ONVOY, LLC - VA 138E DILLWYN VA
2020-10-08 445-446 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E SOUDERTON PA
2020-10-08 463-247 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H MARIETTA IN
2020-10-08 540-823 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 FRONTROYAL VA
2020-10-08 574-758 2XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H WALTON IN
2020-10-08 574-944 3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H TWELVEMILE IN
2020-10-08 585-833 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H EROCHESTER NY
2020-10-08 585-844 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H FAIRPORT NY
2020-10-08 639-297 not yet reported which blocks → Fibernetics Corporation 464D Moosomin —
2020-10-08 639-298 not yet reported which blocks → Fibernetics Corporation 464D Biggar —
2020-10-08 651-758 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H TWINCITIES MN
2020-10-08 657-459 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2020-10-08 657-461 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SILVERADO CA
2020-10-08 657-470 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2020-10-08 682-337 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F NRICHLDHLS TX
2020-10-08 716-593 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → DFT LOCAL SERVICE CORP. DBA DFT SELECT ONE-NY 5367 SPRINGVL NY
2020-10-08 727-371 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H CLEARWATER FL
2020-10-08 804-851 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - VA 138E COLONILBCH VA
2020-10-08 804-881 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - VA 138E OLD CHURCH VA
2020-10-08 808-481 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - HI 9414 HILO HI
2020-10-08 816-477 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - MO 093F LEESSUMMIT MO
2020-10-08 878-887 3XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - PA 547E PARIS PA
2020-10-08 930-226 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H AUSTIN IN
2020-10-08 930-346 0XXX2XXX3XXX4XXX · 3 holders which blocks → FRACTEL, LLC 965H MITCHELL IN
2020-10-08 930-348 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → FRACTEL, LLC 965H AURORA IN
2020-10-08 930-667 1XXX3XXX6XXX7XXX · 4 holders which blocks → FRACTEL, LLC 965H ELIZABETH IN
2020-10-08 930-688 0XXX1XXX2XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H MARENGO IN
2020-10-08 930-732 0XXX1XXX2XXX5XXX · 4 holders which blocks → FRACTEL, LLC 965H MILLTOWN IN
2020-10-08 930-786 0XXX1XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H NEWMIDDLTN IN
2020-10-08 930-842 0XXX2XXX3XXX4XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H HENRYVILLE IN
2020-10-08 930-867 0XXX1XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H FREDECKSBG IN
2020-10-08 930-966 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H HANOVER IN
2020-10-07 260-732 0XXX2XXX5XXX7XXX · 4 holders which blocks → FRACTEL, LLC 965H PLEASANTLK IN
2020-10-07 260-842 0XXX2XXX3XXX5XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H RESERVOIR IN
2020-10-07 260-844 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H NEW HAVEN IN
2020-10-07 260-867 0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 5 holders which blocks → FRACTEL, LLC 965H NOMANCHETR IN
2020-10-07 260-977 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H LAGRANGE IN
2020-10-07 272-447 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WILKSBARRE PA
2020-10-07 320-436 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 MORA MN
2020-10-07 346-442 0–9 XXXall 10 · 2 holders which blocks → COMCAST IP PHONE, LLC 318J SPRING TX
2020-10-07 346-443 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J SPRING TX
2020-10-07 435-290 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAMAS UT
2020-10-07 463-724 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H FRANKLIN IN
2020-10-07 463-732 0XXX1XXX2XXX3XXX5XXX6XXX8XXX · 6 holders which blocks → FRACTEL, LLC 965H CHARLOTSVL IN
2020-10-07 463-946 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H WHITESTOWN IN
2020-10-07 470-664 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E ATLANTA NE GA
2020-10-07 470-676 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2020-10-07 470-681 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E ATLANTA GA
2020-10-07 470-718 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA NW GA

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.