NumberResearch Membership · Data 09/28/2026

Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

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 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
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
2020-02-14 567-833 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H SYLVANIA OH
2020-02-14 567-866 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H KELLEYS IS OH
2020-02-14 567-877 0–9 XXXall 10 · 8 holders which blocks → FRACTEL, LLC 965H HURON OH
2020-02-14 567-891 0XXX1XXX · 2 holders which blocks → FRACTEL, LLC 965H SWANTON OH
2020-02-14 567-895 0XXX2XXX3XXX5XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H SAVANNAH OH
2020-02-14 567-898 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H PERRYSBURG OH
2020-02-14 609-766 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H BORDENTOWN NJ
2020-02-14 651-374 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J TWINCITIES MN
2020-02-14 689-400 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H MONTVERDE FL
2020-02-14 772-362 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H HOBE SOUND FL
2020-02-14 774-382 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 NANTUCKET MA
2020-02-14 786-933 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H KEYS FL
2020-02-14 854-234 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H PATRICK SC
2020-02-14 856-388 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H WILLIAMSTN NJ
2020-02-14 856-977 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H MILLVILLE NJ
2020-02-14 863-732 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H LAKELAND FL
2020-02-14 908-633 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H PLAINFIELD NJ
2020-02-14 941-277 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H BRADENTON FL
2020-02-14 941-842 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H PALMETTO FL
2020-02-14 941-946 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H VENICE FL
2020-02-13 207-304 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - ME 882G WISCASSET ME
2020-02-13 209-414 0–9 XXXall 10 · 4 holders which blocks → CSC WIRELESS, LLC 425J STOCKTON CA
2020-02-13 223-233 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F SPRING GRV PA
2020-02-13 319-946 1XXX3XXX4XXX5XXX6XXX · 4 holders which blocks → FRACTEL, LLC 965H MOUNTUNION IA
2020-02-13 343-553 not yet reported which blocks → Bell Mobility 6574 Ottawa-Hull —
2020-02-13 438-286 not yet reported which blocks → Bell Mobility 6574 Montreal —
2020-02-13 442-315 0–9 XXXall 10 · 2 holders which blocks → CSC WIRELESS, LLC 425J PALM SPG CA
2020-02-13 475-268 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 STAMFORD CT
2020-02-13 531-240 0–9 XXXall 10 · 8 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 ASHLAND NE
2020-02-13 559-209 0–9 XXXall 10 · 4 holders which blocks → CSC WIRELESS, LLC 425J FRESNO CA
2020-02-13 580-742 0XXX1XXX7XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - OK 119F GERTY OK
2020-02-13 581-466 not yet reported which blocks → Bell Mobility 6574 Riviere-du-Loup —
2020-02-13 608-650 0XXX1XXX4XXX5XXX6XXX · 4 holders which blocks → MCC TELEPHONY OF THE MIDWEST, LLC - WI 983F NECEDAH WI
2020-02-13 623-250 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2020-02-13 657-422 0–9 XXXall 10 · 3 holders which blocks → METROPCS NETWORKS, LLC 899D SANTA ANA CA
2020-02-13 661-308 0–9 XXXall 10 · 5 holders which blocks → CSC WIRELESS, LLC 425J BKFD MAIN CA
2020-02-13 820-202 0XXX1XXX2XXX8XXX9XXX · 3 holders which blocks → CSC WIRELESS, LLC 425J SNLUSOBSPO CA
2020-02-13 904-788 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H ST JOHNS FL
2020-02-13 904-822 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H PNTVDRABCH FL
2020-02-13 904-977 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H STARKE FL
2020-02-12 220-234 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H MARTISFRRY OH
2020-02-12 220-356 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H BYESVILLE OH
2020-02-12 220-400 0XXX1XXX2XXX4XXX · 2 holders which blocks → FRACTEL, LLC 965H CHESTERHL OH
2020-02-12 220-465 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H PATASKALA OH
2020-02-12 220-529 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H OLDWSHNGTN OH
2020-02-12 220-758 0XXX1XXX2XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → FRACTEL, LLC 965H REINELHKNY OH
2020-02-12 220-766 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H WALNUT OH
2020-02-12 220-842 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H WELLSTON OH
2020-02-12 226-546 not yet reported which blocks → Iristel Inc. 154E St. Thomas —
2020-02-12 234-277 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H ALLIANCE OH

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.