NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

338 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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. 38
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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
2002-10-17 501-200 0XXX1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 REDFIELD AR
2002-10-17 501-201 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRADFORD AR
2002-10-17 519-838 not yet reported which blocks → TELUS Integrated Communications 2782 Guelph —
2002-10-17 540-352 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 ROCKYMOUNT VA
2002-10-17 620-388 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS 6532 PRATT KS
2002-10-17 620-440 2XXX3XXX4XXX5XXX6XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS 6532 WELLINGTON KS
2002-10-17 620-660 3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS 6532 ARKANSASCY KS
2002-10-17 620-755 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS 6532 MCPHERSON KS
2002-10-17 620-794 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS 6532 EMPORIA KS
2002-10-17 714-588 7XXX which blocks → T-MOBILE USA, INC. 6529 ANAHEIM CA
2002-10-17 714-623 7XXX8XXX9XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 SANTA ANA CA
2002-10-17 714-675 4XXX6XXX7XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 SANTA ANA CA
2002-10-17 714-797 7XXX which blocks → T-MOBILE USA, INC. 6529 ANAHEIM CA
2002-10-17 715-931 1XXX2XXX3XXX4XXX5XXX6XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 RICE LAKE WI
2002-10-17 716-901 0XXX7XXX8XXX9XXX · 3 holders which blocks → METROPCS, INC. 5562 LANCASTER NY
2002-10-17 716-940 none assigned yet which blocks → METROPCS, INC. 5562 LOCKPORT NY
2002-10-17 716-997 none assigned yet which blocks → METROPCS, INC. 5562 WESTSENECA NY
2002-10-17 786-663 not yet reported which blocks → METROPCS, INC. 5562 NORTH DADE FL
2002-10-17 818-448 not yet reported which blocks → T-MOBILE USA, INC. 6529 VAN NUYS CA
2002-10-17 818-633 not yet reported which blocks → T-MOBILE USA, INC. 6529 VAN NUYS CA
2002-10-17 818-919 not yet reported which blocks → T-MOBILE USA, INC. 6529 BRBN BRBN CA
2002-10-17 819-318 not yet reported which blocks → Fido Solutions Inc. 5643 Ottawa-Hull —
2002-10-17 870-330 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AR 5179 TEXARKANA AR
2002-10-17 870-842 3XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOLLYGROVE AR
2002-10-17 870-843 6XXX7XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JUNCTIONCY AR
2002-10-17 870-844 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 IMBODEN AR
2002-10-17 870-847 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHEROKEVLG AR
2002-10-17 909-913 4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 S BERNDINO CA
2002-10-17 951-756 7XXX which blocks → T-MOBILE USA, INC. 6529 RIVERSIDE CA
2002-10-16 239-898 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 FORT MYERS FL
2002-10-16 309-220 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC 224C WASHBURN IL
2002-10-16 309-228 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 FARMINGTON IL
2002-10-16 309-240 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC 224C DUNLAP IL
2002-10-16 309-250 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC 224C EDELSTEIN IL
2002-10-16 309-270 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E CHILLICOTH IL
2002-10-16 309-290 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC 224C MINERAL IL
2002-10-16 309-291 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E MORTON IL
2002-10-16 309-301 0XXX1XXX2XXX3XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC 224C TOULON IL
2002-10-16 309-354 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC 224C MACKINAW IL
2002-10-16 309-356 1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → ONVOY, LLC 224C HENRY IL
2002-10-16 309-395 1XXX3XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC 224C GROVELAND IL
2002-10-16 309-396 1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC 224C PRINCEVL IL
2002-10-16 309-398 2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC 224C LA ROSE IL
2002-10-16 309-440 1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC 224C DEER CREEK IL
2002-10-16 309-442 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC 224C BRIMFIELD IL
2002-10-16 309-450 1XXX2XXX3XXX4XXX5XXX9XXX · 3 holders which blocks → ONVOY, LLC 224C CONGERVL IL
2002-10-16 309-455 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC 224C HOPEDALE IL
2002-10-16 309-460 1XXX2XXX3XXX5XXX8XXX · 3 holders which blocks → ONVOY, LLC 224C LOW POINT IL
2002-10-16 309-461 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC 224C MINONK IL
2002-10-16 309-466 1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC 224C EUREKA IL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.