NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 27
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2018-10-23 814-983 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F ERIE PA
2018-10-23 984-246 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF NORTH CAROLINA, LLC - NC 350F APEX NC
2018-10-22 209-310 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LODI CA
2018-10-22 210-936 0–9 XXXwhole prefix which blocks → SOUTHWESTERN BELL 9533 SANANTONIO TX
2018-10-22 224-295 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 PALATINE IL
2018-10-22 385-284 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 MORGAN UT
2018-10-22 440-643 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F COLUMBISTA OH
2018-10-22 442-304 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - CA 649C EAGLE MT CA
2018-10-22 463-215 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FISHERS IN
2018-10-22 470-408 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - GA 067D ATLANTA GA
2018-10-22 513-654 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F SO LEBANON OH
2018-10-22 646-980 0–9 XXXall 10 · 3 holders which blocks → AIRUS, INC. - NY 363H NWYRCYZN01 NY
2018-10-22 646-991 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2018-10-22 667-267 0–9 XXXwhole prefix which blocks → CORE COMMUNICATIONS, INC.- MD 2593 ANNAPOLIS MD
2018-10-22 716-477 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E CATTARAGUS NY
2018-10-22 720-682 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2018-10-22 727-291 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E STPETERSBG FL
2018-10-22 845-539 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E LIBERTY NY
2018-10-22 864-537 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 GREENVILLE SC
2018-10-22 873-539 not yet reported which blocks → Videotron Ltd. 8306 La Minerve —
2018-10-22 929-497 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN03 NY
2018-10-22 929-519 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN10 NY
2018-10-20 610-477 9XXX which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F ALLENTOWN PA
2018-10-19 210-761 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C SANANTONIO TX
2018-10-19 218-580 0XXX1XXX4XXX8XXX9XXX · 4 holders which blocks → TEKSTAR COMMUNICATIONS, INC. 4156 DULUTH MN
2018-10-19 224-294 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 LIBERTYVL IL
2018-10-19 323-970 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LSAN DA 09 CA
2018-10-19 331-242 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 LOMBARD IL
2018-10-19 331-243 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 LOMBARD IL
2018-10-19 331-246 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 LEMONT IL
2018-10-19 409-401 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - TX 903C BON WIER TX
2018-10-19 409-506 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - TX 903C BRONSON TX
2018-10-19 430-789 0XXX1XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → ONVOY, LLC - TX 903C UNCERTAIN TX
2018-10-19 430-835 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - TX 903C MARIETTA TX
2018-10-19 430-897 0XXX1XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - TX 903C NAPLES TX
2018-10-19 432-293 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - TX 903C EAST HOBBS TX
2018-10-19 432-666 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → ONVOY, LLC - TX 903C ORLA TX
2018-10-19 432-777 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - TX 903C IMPERIAL TX
2018-10-19 435-254 0–9 XXXwhole prefix which blocks → ONVOY, LLC - UT 871E PORTAGE UT
2018-10-19 435-266 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - UT 871E LYNNDYL UT
2018-10-19 435-409 2XXX4XXX5XXX8XXX which blocks → ONVOY, LLC - UT 871E SCIPIO UT
2018-10-19 435-422 1XXX2XXX3XXX4XXX6XXX · 3 holders which blocks → ONVOY, LLC - UT 871E HOWELL UT
2018-10-19 435-447 0XXX4XXX7XXX which blocks → ONVOY, LLC - UT 871E FIELDING UT
2018-10-19 435-626 2XXX4XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - UT 871E SNOWVILLE UT
2018-10-19 435-923 2XXX3XXX4XXX5XXX which blocks → ONVOY, LLC - UT 871E THATCHER UT
2018-10-19 509-873 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 KENNEWICK WA
2018-10-19 530-607 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J WHEATLAND CA
2018-10-19 651-360 0XXX1XXX2XXX3XXX4XXX7XXX9XXX · 6 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 RED WING MN
2018-10-19 682-278 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 EULESS TX
2018-10-19 734-373 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.