NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
2021-12-28 479-895 0–9 XXXall 10 · 3 holders which blocks → TWILIO INTERNATIONAL, INC. 506J FORT SMITH AR
2021-12-28 507-851 0XXX9XXX · 2 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J ROCHESTER MN
2021-12-28 650-663 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PACIFICA CA
2021-12-28 689-267 0–9 XXXall 10 · 5 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J ORLANDO FL
2021-12-28 726-348 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H SANANTONIO TX
2021-12-28 930-255 5XXX7XXX · 2 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J EDINBURGH IN
2021-12-24 431-792 not yet reported which blocks → TELUS Mobility 8303 Winnipeg —
2021-12-24 782-773 not yet reported which blocks → TELUS Mobility 8303 Amherst —
2021-12-23 223-271 0–9 XXXall 10 · 5 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J LANCASTER PA
2021-12-23 224-448 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BARRINGTON IL
2021-12-23 276-657 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HAYSI VA
2021-12-23 334-843 0–9 XXXall 10 · 3 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 EUFAULA AL
2021-12-23 417-897 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TWILIO INTERNATIONAL, INC. 506J SPRINGFLD MO
2021-12-23 437-261 not yet reported which blocks → Videotron Ltd. 787G Toronto —
2021-12-23 437-262 not yet reported which blocks → Videotron Ltd. 787G Toronto —
2021-12-23 437-263 not yet reported which blocks → Videotron Ltd. 787G Toronto —
2021-12-23 470-914 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - GA 8392 CONYERS GA
2021-12-23 502-579 0–9 XXXall 10 · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J LOUISVILLE KY
2021-12-23 531-281 0XXX1XXX8XXX9XXX · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TEKAMAH NE
2021-12-23 534-204 0–9 XXXall 10 · 2 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J EAU CLAIRE WI
2021-12-23 586-310 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E MT CLEMENS MI
2021-12-23 586-328 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WARREN MI
2021-12-23 660-556 0XXX1XXX2XXX6XXX9XXX · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 WARSAW MO
2021-12-23 662-866 0XXX1XXX3XXX6XXX8XXX9XXX · 4 holders which blocks → POWERTEL MEMPHIS LICENSES, INC. 7474 LULA MS
2021-12-23 707-930 2XXX7XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ANNAPOLIS CA
2021-12-23 762-305 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 COMMERCE GA
2021-12-23 775-492 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 CARSON PL NV
2021-12-23 810-297 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2021-12-23 912-482 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 SAVANNAH GA
2021-12-23 925-496 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CONCORD CA
2021-12-23 980-390 0–9 XXXall 10 · 6 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J CHARLOTTE NC
2021-12-23 980-408 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2021-12-22 321-379 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E EAU GALLIE FL
2021-12-22 321-380 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E COCOA FL
2021-12-22 326-827 0XXX9XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LIBERTY OH
2021-12-22 636-342 0–9 XXXall 10 · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J HARVESTER MO
2021-12-22 656-222 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H TAMPASTH FL
2021-12-22 656-333 0–9 XXXall 10 · 6 holders which blocks → WIDE VOICE, LLC - FL 704G TAMPAEST FL
2021-12-22 656-444 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H TAMPANTH FL
2021-12-22 656-666 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H ZEPHYRHILS FL
2021-12-22 656-777 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H PLANT CITY FL
2021-12-22 656-888 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H TAMPAWST FL
2021-12-22 656-999 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H TAMPAEST FL
2021-12-22 682-369 0–9 XXXall 10 · 7 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J ALVARADO TX
2021-12-22 727-496 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 CLEARWATER FL
2021-12-22 734-768 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ANN ARBOR MI
2021-12-22 813-945 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H TAMPACEN FL
2021-12-22 816-879 0–9 XXXall 10 · 2 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J KANSASCITY MO
2021-12-22 838-277 2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H KATTSKL BY NY
2021-12-22 838-377 0XXX6XXX7XXX8XXX · 3 holders which blocks → FRACTEL, LLC 965H PRATTSVL NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.