NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

355 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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
ONVOY, LLC - CA 31
NEW CINGULAR WIRELESS PCS, LLC - IL 28
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
2002-08-02 941-467 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 PTCHARLOTT FL
2002-08-01 502-201 not yet reported which blocks → WIN.NET TELECOMMUNICATIONS, INC. - KY 3583 LA GRANGE KY
2002-08-01 502-274 not yet reported which blocks → WIN.NET TELECOMMUNICATIONS, INC. - KY 3583 MILTON KY
2002-08-01 502-328 not yet reported which blocks → WIN.NET TELECOMMUNICATIONS, INC. - KY 3583 GHENT KY
2002-08-01 502-433 not yet reported which blocks → WIN.NET TELECOMMUNICATIONS, INC. - KY 3583 NEWLIBERTY KY
2002-08-01 502-481 not yet reported which blocks → WIN.NET TELECOMMUNICATIONS, INC. - KY 3583 CROPPER KY
2002-08-01 502-486 not yet reported which blocks → WIN.NET TELECOMMUNICATIONS, INC. - KY 3583 OWENTON KY
2002-08-01 502-646 not yet reported which blocks → WIN.NET TELECOMMUNICATIONS, INC. - KY 3583 SHELBYVL KY
2002-08-01 502-720 not yet reported which blocks → WIN.NET TELECOMMUNICATIONS, INC. - KY 3583 SIMPSONVL KY
2002-08-01 502-730 not yet reported which blocks → WIN.NET TELECOMMUNICATIONS, INC. - KY 3583 MOUNT EDEN KY
2002-08-01 502-745 not yet reported which blocks → WIN.NET TELECOMMUNICATIONS, INC. - KY 3583 SULPHUR KY
2002-08-01 502-828 not yet reported which blocks → WIN.NET TELECOMMUNICATIONS, INC. - KY 3583 WADDY KY
2002-08-01 502-832 not yet reported which blocks → WIN.NET TELECOMMUNICATIONS, INC. - KY 3583 FINCHVILLE KY
2002-08-01 502-846 not yet reported which blocks → WIN.NET TELECOMMUNICATIONS, INC. - KY 3583 EMINENCE KY
2002-08-01 502-940 not yet reported which blocks → WIN.NET TELECOMMUNICATIONS, INC. - KY 3583 PORT ROYAL KY
2002-08-01 541-254 2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BROOKINGS OR
2002-08-01 541-294 6XXX7XXX8XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 COOS BAY OR
2002-08-01 541-373 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 GOLD BEACH OR
2002-08-01 541-707 1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 REEDSPORT OR
2002-08-01 760-812 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 LKISABELLA CA
2002-08-01 760-960 6XXX7XXX which blocks → T-MOBILE USA, INC. 6529 EL CENTRO CA
2002-08-01 760-977 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 RIDGECREST CA
2002-08-01 775-293 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV 6458 ELY NV
2002-08-01 775-316 2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV 6458 HAWTHORNE NV
2002-08-01 812-698 3XXX4XXX5XXX6XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 WASHINGTON IN
2002-08-01 860-209 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 HARTFORD CT
2002-08-01 909-319 not yet reported which blocks → T-MOBILE USA, INC. 6529 ONTARIO CA
2002-08-01 951-454 not yet reported which blocks → T-MOBILE USA, INC. 6529 CORONA CA
2002-08-01 951-775 not yet reported which blocks → T-MOBILE USA, INC. 6529 TEMECULA CA
2002-07-31 217-686 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MARSHALL IL
2002-07-31 251-410 not yet reported which blocks → TELEPAK NETWORKS, INC. - AL 947G MOBILE AL
2002-07-31 256-419 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J ANNISTON AL
2002-07-31 256-459 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J GADSDEN AL
2002-07-31 334-828 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → SOUTHERN COMMUNICATIONS SERVICES, INC. 6744 DOTHAN AL
2002-07-31 417-234 8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD MO
2002-07-31 617-458 5XXX7XXX8XXX · 2 holders which blocks → METROPCS, INC. 5562 WATERTOWN MA
2002-07-31 617-935 0XXX8XXX · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2002-07-31 702-353 not yet reported which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2002-07-31 702-354 not yet reported which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2002-07-31 731-337 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TN 4806 HUMBOLDT TN
2002-07-31 870-299 4XXX5XXX6XXX7XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 MAGNOLIA AR
2002-07-31 985-248 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J LAPLACE LA
2002-07-31 989-390 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAYLING MI
2002-07-30 205-775 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J CHELSEA AL
2002-07-30 224-628 7XXX which blocks → T-MOBILE USA, INC. 6529 NORTHBROOK IL
2002-07-30 401-391 0XXX3XXX4XXX5XXX which blocks → METROPCS, INC. 5562 WARWICK RI
2002-07-30 401-418 3XXX8XXX9XXX · 2 holders which blocks → METROPCS, INC. 5562 PORTSMOUTH RI
2002-07-30 401-617 none assigned yet which blocks → METROPCS, INC. 5562 PAWTUCKET RI
2002-07-30 402-804 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 PLATTSMTH NE
2002-07-30 541-397 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OR 3234 THE DALLES OR

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.