NumberResearch Membership · Data 09/23/2026

Recent prefix assignments

357 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/23/2026

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. 39
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - DC 27
ONVOY, LLC - NJ 20
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
2022-12-08 618-907 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CENTRALIA IL
2022-12-08 618-908 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALTON IL
2022-12-08 618-914 0–9 XXXwhole prefix which blocks → ONVOY, LLC 224C KASKASKIA IL
2022-12-08 639-554 not yet reported which blocks → Bell Mobility 6574 Regina —
2022-12-08 706-349 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ROME GA
2022-12-08 754-295 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HOLLYWOOD FL
2022-12-08 786-894 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E MIAMI FL
2022-12-08 786-895 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 PERRINE FL
2022-12-08 786-936 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C MIAMI FL
2022-12-08 786-937 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C HOMESTEAD FL
2022-12-08 865-260 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TN 124F MARYVILLE TN
2022-12-08 912-671 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DOUGLAS GA
2022-12-08 949-781 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E NEWPORTBCH CA
2022-12-08 951-621 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CORONA CA
2022-12-07 317-314 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 GREENFIELD IN
2022-12-07 385-508 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 SALT LAKE UT
2022-12-07 448-213 0–9 XXXall 10 · 3 holders which blocks → POWERTEL JACKSONVILLE LICENSES, INC. 7472 TALLAHASSE FL
2022-12-07 505-543 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 FARMINGTON NM
2022-12-07 571-596 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN17 VA
2022-12-07 572-272 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OK 409F STILLWATER OK
2022-12-07 606-426 0XXX1XXX4XXX5XXX8XXX · 3 holders which blocks → ONVOY, LLC - KY 896E FAUBUSH KY
2022-12-07 606-586 0XXX1XXX5XXX8XXX · 3 holders which blocks → ONVOY, LLC - KY 896E WAYLAND KY
2022-12-07 620-690 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - KS 205F HUTCHINSON KS
2022-12-07 656-209 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPANTH FL
2022-12-07 743-254 0XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ANDERSON NC
2022-12-07 743-373 0XXX1XXX3XXX7XXX · 3 holders which blocks → ONVOY, LLC - NC 638E RAMSEUR NC
2022-12-07 743-473 0XXX1XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - NC 638E TIMBERLAKE NC
2022-12-07 859-589 0XXX1XXX2XXX4XXX5XXX8XXX · 2 holders which blocks → ONVOY, LLC - KY 896E WILMORE KY
2022-12-07 980-790 0XXX1XXX7XXX · 2 holders which blocks → ONVOY, LLC - NC 638E NORWOOD NC
2022-12-07 986-244 9XXX which blocks → BOOST SUBSCRIBERCO L.L.C. 490J COERDALENE ID
2022-12-06 220-242 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LANCASTER OH
2022-12-06 343-598 not yet reported which blocks → Bell Mobility 6574 Ottawa-Hull —
2022-12-06 380-383 0–9 XXXwhole prefix which blocks → ONVOY, LLC - OH 464C COLUMBUS OH
2022-12-06 385-496 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2022-12-06 385-504 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2022-12-06 385-506 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MIDVALE UT
2022-12-06 385-507 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2022-12-06 437-431 not yet reported which blocks → Bell Mobility 6574 Toronto —
2022-12-06 438-468 not yet reported which blocks → Bell Mobility 6574 Montreal —
2022-12-06 480-932 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2022-12-06 507-902 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANKATO MN
2022-12-06 584-301 not yet reported which blocks → Bell Mobility 6574 Stonewall —
2022-12-06 615-621 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F NASHVILLE TN
2022-12-06 615-910 0–9 XXXall 10 · 2 holders which blocks → HADLO TECHNOLOGIES, LLC 436J NASHVILLE TN
2022-12-06 626-670 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ALHAMBRA CA
2022-12-06 659-261 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - AL 072F TUSCALOOSA AL
2022-12-06 709-331 not yet reported which blocks → Bragg Communications Inc. 421G Corner Brook —
2022-12-06 765-805 0–9 XXXall 10 · 2 holders which blocks → HANCOCK COMMUNICATIONS, INC. - IN 7459 MUNCIE IN
2022-12-06 805-949 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 CAMARILLO CA
2022-12-06 805-993 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 NEWBURYPRK CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.