NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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
2019-08-16 873-460 not yet reported which blocks → Videotron Ltd. 8306 Woburn —
2019-08-16 873-461 not yet reported which blocks → Videotron Ltd. 8306 Frontenac —
2019-08-16 970-647 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - CO 026D JULESBURG CO
2019-08-16 970-651 2XXX6XXX7XXX · 2 holders which blocks → ONVOY, LLC - CO 026D MAYBELL CO
2019-08-16 970-696 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - CO 026D RIDGWAY CO
2019-08-16 970-709 0XXX1XXX2XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → ONVOY, LLC - CO 026D GRAND LAKE CO
2019-08-16 970-741 0XXX4XXX5XXX7XXX · 3 holders which blocks → ONVOY, LLC - CO 026D MEEKER CO
2019-08-16 970-849 1XXX2XXX4XXX5XXX7XXX9XXX · 3 holders which blocks → ONVOY, LLC - CO 026D OURAY CO
2019-08-15 431-872 not yet reported which blocks → Westman Media Cooperative Ltd 120F Elm Creek —
2019-08-15 431-875 not yet reported which blocks → Westman Media Cooperative Ltd 120F Oak River —
2019-08-15 463-225 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F WESTNEWTON IN
2019-08-15 715-907 0–9 XXXall 10 · 7 holders which blocks → TDS METROCOM, LLC 520K WAUSAU WI
2019-08-14 223-220 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - PA 547E CHAMBERSBG PA
2019-08-14 269-257 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 STURGIS MI
2019-08-14 332-214 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NWYRCYZN01 NY
2019-08-14 360-916 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 LONGVIEW WA
2019-08-14 404-544 0–9 XXXwhole prefix which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 ATLANTA GA
2019-08-14 431-873 not yet reported which blocks → Westman Media Cooperative Ltd 120F St. Claude —
2019-08-14 431-874 not yet reported which blocks → Westman Media Cooperative Ltd 120F Minto —
2019-08-14 431-876 not yet reported which blocks → Westman Media Cooperative Ltd 120F Wawanesa —
2019-08-14 438-272 not yet reported which blocks → Bell Mobility 6574 Montreal —
2019-08-14 469-833 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C PLANO TX
2019-08-14 470-524 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E ATLANTA NW GA
2019-08-14 715-890 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MINOCQUA WI
2019-08-14 786-705 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 KEYS FL
2019-08-13 307-218 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - WY 450F SHERIDAN WY
2019-08-13 318-721 1XXX2XXX3XXX4XXX5XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BERNICE LA
2019-08-13 352-648 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E OCALA FL
2019-08-13 424-438 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2019-08-13 509-502 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SUNNYSIDE WA
2019-08-13 516-856 0–9 XXXall 10 · 3 holders which blocks → CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN04 NY
2019-08-13 571-695 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 WSNGTNZN17 VA
2019-08-13 619-703 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 CHULAVISTA CA
2019-08-13 816-323 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MO 993E RICHMOND MO
2019-08-13 913-363 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - KS 986E BONNER SPG KS
2019-08-12 385-412 0–9 XXXwhole prefix which blocks → ONVOY, LLC - UT 871E PROVO UT
2019-08-12 469-788 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 IRVING TX
2019-08-12 480-581 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2019-08-12 551-306 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 UNION CITY NJ
2019-08-12 609-956 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 7142 HAMMONTON NJ
2019-08-12 657-389 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SILVERADO CA
2019-08-12 681-500 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → FRACTEL, LLC 965H HNTNGTNZN4 WV
2019-08-12 681-529 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H HNTNGTNZN1 WV
2019-08-12 681-666 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H BECKLEY WV
2019-08-12 681-777 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CHRLSTNZN5 WV
2019-08-12 701-291 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - ND 452F NORTHWOOD ND
2019-08-12 701-501 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - ND 452F CASSELTON ND
2019-08-12 701-987 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - ND 452F THOMPSON ND
2019-08-12 775-441 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - NV 029F CRESCNTVLY NV
2019-08-12 775-510 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - NV 029F MOUNTAINCY NV

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.