NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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 21
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
2021-02-11 561-591 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2021-02-11 608-761 1XXX2XXX5XXX · 3 holders which blocks → MCC TELEPHONY OF THE MIDWEST, LLC - WI 983F SENECA WI
2021-02-11 639-806 not yet reported which blocks → Iristel Inc. 154E Moosomin —
2021-02-11 667-646 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ANNAPOLIS MD
2021-02-11 762-283 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATHENS GA
2021-02-11 762-285 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 CLARKESVL GA
2021-02-11 807-858 not yet reported which blocks → ExaTEL Inc. 3147 Geraldton —
2021-02-11 873-590 not yet reported which blocks → Fibernetics Corporation 464D Champlain —
2021-02-11 873-591 not yet reported which blocks → Fibernetics Corporation 464D Deschaillons —
2021-02-11 873-592 not yet reported which blocks → Fibernetics Corporation 464D Fortierville —
2021-02-11 873-593 not yet reported which blocks → Fibernetics Corporation 464D Louiseville —
2021-02-11 873-594 not yet reported which blocks → Fibernetics Corporation 464D Maskinonge —
2021-02-11 873-595 not yet reported which blocks → Fibernetics Corporation 464D Ste-Monique-de-Nicolet —
2021-02-11 873-596 not yet reported which blocks → Fibernetics Corporation 464D Ste-Sophie-de-Levrard —
2021-02-11 873-597 not yet reported which blocks → Fibernetics Corporation 464D St-Pierre-Les-Becquets —
2021-02-11 873-598 not yet reported which blocks → Fibernetics Corporation 464D Yamachiche —
2021-02-11 941-789 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H BOCAGRANDE FL
2021-02-10 208-586 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - ID 689F NAMPA ID
2021-02-10 223-254 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F GLEN ROCK PA
2021-02-10 240-703 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2021-02-10 240-756 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN10 MD
2021-02-10 272-254 0XXX1XXX2XXX3XXX4XXX6XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 WOOLRICH PA
2021-02-10 276-978 2XXX3XXX6XXX7XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HONAKER VA
2021-02-10 307-368 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 6566 AFTON WY
2021-02-10 337-553 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 GUEYDAN LA
2021-02-10 365-960 not yet reported which blocks → Iristel Inc. 154E Markham —
2021-02-10 365-970 not yet reported which blocks → Iristel Inc. 154E Markham —
2021-02-10 385-391 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2021-02-10 386-695 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PALATKA FL
2021-02-10 516-386 0–9 XXXall 10 · 3 holders which blocks → UCOMTEL INC. 534J NASSAUZN09 NY
2021-02-10 516-854 0–9 XXXall 10 · 5 holders which blocks → UCOMTEL INC. 534J NASSAUZN02 NY
2021-02-10 571-531 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN17 VA
2021-02-10 571-837 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LEESBURG VA
2021-02-10 581-923 not yet reported which blocks → TELUS Quebec 8083 New Carlisle —
2021-02-10 581-924 not yet reported which blocks → TELUS Quebec 8083 Saint-Tite —
2021-02-10 602-706 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 PHOENIX AZ
2021-02-10 608-749 0XXX1XXX4XXX · 3 holders which blocks → MCC TELEPHONY OF THE MIDWEST, LLC - WI 983F EASTMAN WI
2021-02-10 629-250 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H NASHVILLE TN
2021-02-10 754-736 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HOLLYWOOD FL
2021-02-10 779-336 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H WOODSTOCK IL
2021-02-10 779-732 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H LA SALLE IL
2021-02-10 782-212 not yet reported which blocks → Iristel Inc. 154E Alberton —
2021-02-10 782-812 not yet reported which blocks → Iristel Inc. 154E Liverpool —
2021-02-10 863-372 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MULBERRY FL
2021-02-10 914-408 0–9 XXXall 10 · 5 holders which blocks → UCOMTEL INC. 534J CHAPPAQUA NY
2021-02-09 207-886 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - ME 454F CAMDEN ME
2021-02-09 209-657 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 RIVERBANK CA
2021-02-09 220-837 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CHILLICOTH OH
2021-02-09 226-912 not yet reported which blocks → TekSavvy Solutions Inc 548H Mount Brydges —
2021-02-09 226-913 not yet reported which blocks → TekSavvy Solutions Inc 548H Nairn —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.