NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

355 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
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
2002-09-24 717-388 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E MIDDLETOWN PA
2002-09-24 814-462 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → METROPCS, INC. 5562 CORRY PA
2002-09-24 828-490 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 ARDEN NC
2002-09-24 828-522 1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 VALDESE NC
2002-09-24 828-523 1XXX2XXX3XXX6XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 GRANITEFLS NC
2002-09-24 859-964 4XXX5XXX6XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - KY 4369 BRYANTSVL KY
2002-09-24 859-965 2XXX3XXX4XXX5XXX6XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - KY 4369 DANVILLE KY
2002-09-24 870-200 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NASHVILLE AR
2002-09-24 903-316 1XXX2XXX3XXX4XXX5XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TYLER TX
2002-09-24 980-598 0–9 XXXall 10 · 6 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 CHARLOTTE NC
2002-09-23 224-392 not yet reported which blocks → T-MOBILE USA, INC. 6529 NORTHBROOK IL
2002-09-23 224-632 0–9 XXXall 10 · 7 holders which blocks → ILLINOIS BELL TEL CO 9329 DEERFIELD IL
2002-09-23 224-772 0–9 XXXall 10 · 6 holders which blocks → ILLINOIS BELL TEL CO 9329 WAUKEGAN IL
2002-09-23 309-840 8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SOUTHPEKIN IL
2002-09-23 315-277 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → METROPCS, INC. 5562 JORDAN NY
2002-09-23 334-447 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 ENTERPRISE AL
2002-09-23 336-233 0XXX2XXX3XXX4XXX5XXX8XXX · 5 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 JULIAN NC
2002-09-23 443-939 2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2002-09-23 570-755 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 MILL HALL PA
2002-09-23 605-202 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 VERMILLION SD
2002-09-23 605-203 2XXX4XXX5XXX7XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LK PRESTON SD
2002-09-23 605-204 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MILLER SD
2002-09-23 620-682 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 DODGE CITY KS
2002-09-23 706-748 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 TELECOM OF GEORGIA, LP - GA 7490 COLUMBUS GA
2002-09-23 757-773 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NRFOLKZON2 VA
2002-09-23 774-210 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WRENTHAM MA
2002-09-23 814-468 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 6 holders which blocks → METROPCS, INC. 5562 HOWARD PA
2002-09-23 814-469 0XXX2XXX3XXX4XXX7XXX8XXX · 4 holders which blocks → METROPCS, INC. 5562 ZION PA
2002-09-23 920-456 0XXX8XXX9XXX · 3 holders which blocks → WISCONSIN BELL INC 9327 OSHKOSH WI
2002-09-22 440-310 4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 COLUMBISTA OH
2002-09-20 503-354 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OR 3234 TILLAMOOK OR
2002-09-20 706-623 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 EATONTON GA
2002-09-20 740-260 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CAMBRIDGE OH
2002-09-20 760-840 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 ENCINITAS CA
2002-09-20 770-572 not yet reported which blocks → METROPCS, INC. 5562 FLOWEYBRCH GA
2002-09-20 775-341 1XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → MATRIX TELECOM, LLC. S/I/I TNCI - NV 2817 HAWTHORNE NV
2002-09-20 775-346 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV 6458 ROUND MT NV
2002-09-20 805-260 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANTAMARIA CA
2002-09-20 805-574 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 ARROYOGRND CA
2002-09-20 805-703 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → T-MOBILE USA, INC. 6529 ATASCADERO CA
2002-09-20 818-744 1XXX2XXX7XXX which blocks → T-MOBILE USA, INC. 6529 SNFN SNFN CA
2002-09-20 818-915 7XXX which blocks → T-MOBILE USA, INC. 6529 NO HOLLYWD CA
2002-09-20 909-844 none assigned yet which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 S BERNDINO CA
2002-09-20 912-289 2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 BRUNSWICK GA
2002-09-20 925-913 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 BSHP RNCH CA
2002-09-20 925-914 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 CLAYTON CA
2002-09-20 925-915 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 DANVILLE CA
2002-09-20 925-917 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 MARTINEZ CA
2002-09-20 925-922 3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 PLEASANTON CA
2002-09-20 937-665 2XXX8XXX9XXX · 2 holders which blocks → CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B VANDALIA OH

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.