NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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
2003-02-25 229-255 0XXX1XXX2XXX3XXX4XXX5XXX · 2 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ALBANY GA
2003-02-25 229-699 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CORDELE GA
2003-02-25 330-749 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WOOSTER OH
2003-02-25 402-307 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → UNITED STATES CELLULAR - NE 6263 TEKAMAH NE
2003-02-25 480-355 0–9 XXXwhole prefix which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7175 PHOENIX AZ
2003-02-25 502-667 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY 6500 SULPHUR KY
2003-02-25 567-274 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANSFIELD OH
2003-02-25 567-283 0–9 XXXall 10 · 9 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANDUSKY OH
2003-02-25 671-922 not yet reported which blocks → PTI PACIFICA INC. DBA IT&E - GU 335E AGANA GU
2003-02-25 760-699 0–9 XXXall 10 · 6 holders which blocks → INTRADO COMMUNICATIONS, LLC 808C PALM SPG CA
2003-02-25 828-582 not yet reported which blocks → SUNCOM DBA T-MOBILE USA 8645 ARDEN NC
2003-02-25 859-377 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 8 holders which blocks → ONVOY, LLC - KY 896E PARIS KY
2003-02-24 251-387 2XXX3XXX4XXX6XXX7XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 JACKSON AL
2003-02-24 361-248 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 CALALLEN TX
2003-02-24 413-248 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J SHEFFIELD MA
2003-02-24 414-334 2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → T-MOBILE USA, INC. 6529 MILWAUKZN5 WI
2003-02-24 702-374 0–9 XXXall 10 · 2 holders which blocks → INTRADO COMMUNICATIONS, LLC 827C LAS VEGAS NV
2003-02-24 763-245 5XXX6XXX7XXX8XXX which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2003-02-21 321-842 0–9 XXXwhole prefix which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 ORLANDO FL
2003-02-21 517-992 0–9 XXXall 10 · 8 holders which blocks → 123.NET, LLC 2550 WILLIAMSTN MI
2003-02-21 705-427 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Midland —
2003-02-21 705-854 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 West Guilford —
2003-02-21 712-215 0–9 XXXall 10 · 5 holders which blocks → UNITED STATES CELLULAR - IA 6266 SHENANDOAH IA
2003-02-21 712-285 not yet reported which blocks → NORTHWEST IOWA TELEPHONE, LLC 1260 SERGENTBLF IA
2003-02-21 810-991 0–9 XXXall 10 · 8 holders which blocks → 123.NET, LLC 2550 HARTLAND MI
2003-02-21 859-779 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 RICHMOND KY
2003-02-21 867-765 not yet reported which blocks → Northwestel 8092 Yellowknife —
2003-02-21 918-385 none assigned yet which blocks → OKLAHOMA WINDSTREAM, INC. 2011 POTEAU OK
2003-02-21 989-281 0XXX1XXX2XXX4XXX5XXX7XXX · 5 holders which blocks → 123.NET, LLC 2550 ROSCOMMON MI
2003-02-21 989-283 0–9 XXXall 10 · 7 holders which blocks → 123.NET, LLC 2550 STANTON MI
2003-02-20 361-222 2XXX3XXX5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TAFT TX
2003-02-20 361-231 3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HEBBRONVL TX
2003-02-20 404-488 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2003-02-20 509-205 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 KENNEWICK WA
2003-02-20 580-624 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → UNITED STATES CELLULAR - OK 6272 KINGSTON OK
2003-02-20 716-989 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LANCASTER NY
2003-02-20 845-594 0–9 XXXall 10 · 2 holders which blocks → INTRADO COMMUNICATIONS, LLC 831C KINGSTON NY
2003-02-19 224-305 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 NORTHBROOK IL
2003-02-19 252-599 3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 COINJOCK NC
2003-02-19 318-405 1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ST LANDRY LA
2003-02-19 402-504 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 OMAHA NE
2003-02-19 434-284 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 CHARLOTSVL VA
2003-02-19 506-323 not yet reported which blocks → Bell Mobility Aliant 329A Woodstock —
2003-02-19 506-397 not yet reported which blocks → Bell Mobility Aliant 329A Tracadie —
2003-02-19 705-706 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Bracebridge —
2003-02-19 724-914 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 WASHINGTON PA
2003-02-19 778-369 not yet reported which blocks → TELUS 8086 Aldergrove —
2003-02-19 902-262 not yet reported which blocks → Bragg Communications Inc. 4878 Saltsprings —
2003-02-19 920-573 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 OSHKOSH WI
2003-02-19 956-220 not yet reported which blocks → STPCS JOINT VENTURE, LLC 4290 LAREDO TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.