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
2022-02-01 848-746 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PTPLEASANT NJ
2022-02-01 859-880 0–9 XXXall 10 · 5 holders which blocks → COMMIO, LLC 939H LEXINGTON KY
2022-02-01 862-753 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CALDWELL NJ
2022-02-01 865-562 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J KNOXVILLE TN
2022-02-01 865-863 0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SHARPSCHPL TN
2022-02-01 872-463 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CHICGOZN10 IL
2022-02-01 901-631 0–9 XXXwhole prefix which blocks → POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2022-02-01 901-663 0–9 XXXwhole prefix which blocks → POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2022-02-01 912-624 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BRUNSWICK GA
2022-02-01 928-665 5XXX7XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J GRANDCNYON AZ
2022-02-01 930-260 0XXX1XXX2XXX8XXX9XXX · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J EVANSVILLE IN
2022-02-01 937-942 2XXX4XXX7XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C HIGGINSPT OH
2022-02-01 945-667 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H ROCKWALL TX
2022-02-01 945-732 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H FRISCO TX
2022-02-01 956-670 0–9 XXXall 10 · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J EDINBURG TX
2022-02-01 986-334 2XXX4XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MAY ID
2022-01-31 205-866 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H DORA AL
2022-01-31 223-282 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 NEWBLOMFLD PA
2022-01-31 224-453 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DEERFIELD IL
2022-01-31 276-334 0XXX1XXX2XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CLINTWOOD VA
2022-01-31 276-537 0XXX7XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J JONESVILLE VA
2022-01-31 276-843 7XXX9XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J DANTE VA
2022-01-31 320-458 0XXX1XXX2XXX6XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E BIRDISLAND MN
2022-01-31 337-832 0–9 XXXall 10 · 8 holders which blocks → TON80 COMMUNICATIONS, LLC 516J STMARTINVL LA
2022-01-31 339-273 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MARSHFIELD MA
2022-01-31 339-737 0XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HANOVER MA
2022-01-31 401-587 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SCITUATE RI
2022-01-31 435-341 0XXX1XXX4XXX8XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - UT 117F MONROE UT
2022-01-31 507-813 0XXX1XXX2XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E NEW SWEDEN MN
2022-01-31 507-814 0XXX6XXX7XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E CHATFIELD MN
2022-01-31 548-412 not yet reported which blocks → Fibernetics Corporation 464D Alvinston —
2022-01-31 548-413 not yet reported which blocks → Fibernetics Corporation 464D Brigden —
2022-01-31 548-414 not yet reported which blocks → Fibernetics Corporation 464D Bright's Grove —
2022-01-31 548-415 not yet reported which blocks → Fibernetics Corporation 464D Corunna —
2022-01-31 548-416 not yet reported which blocks → Fibernetics Corporation 464D Courtright —
2022-01-31 548-417 not yet reported which blocks → Fibernetics Corporation 464D Oil Springs —
2022-01-31 548-418 not yet reported which blocks → Fibernetics Corporation 464D Petrolia —
2022-01-31 548-419 not yet reported which blocks → Fibernetics Corporation 464D Port Lambton —
2022-01-31 548-420 not yet reported which blocks → Fibernetics Corporation 464D Sombra —
2022-01-31 548-421 not yet reported which blocks → Fibernetics Corporation 464D Watford —
2022-01-31 548-422 not yet reported which blocks → Fibernetics Corporation 464D Wyoming —
2022-01-31 608-816 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 LA CROSSE WI
2022-01-31 620-581 0XXX7XXX9XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 BAXTER SPG KS
2022-01-31 762-438 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CORNELIA GA
2022-01-31 762-546 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J DALTON GA
2022-01-31 762-684 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J COMMERCE GA
2022-01-31 762-784 0XXX6XXX7XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LEXINGTON GA
2022-01-31 774-663 0XXX2XXX3XXX7XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CARVER MA
2022-01-31 774-822 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HYANNIS MA
2022-01-31 839-274 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ROCK HILL SC

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.