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
2021-12-14 346-534 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C TOMBALL TX
2021-12-14 352-890 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 LEESBURG FL
2021-12-14 352-931 0–9 XXXall 10 · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J LEESBURG FL
2021-12-14 352-932 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LEESBURG FL
2021-12-14 386-318 0–9 XXXall 10 · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J DAYTONABCH FL
2021-12-14 423-738 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BRISTOL TN
2021-12-14 425-545 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 RENTON WA
2021-12-14 440-691 0–9 XXXall 10 · 2 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J CLEVELAND OH
2021-12-14 458-281 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F BEND OR
2021-12-14 458-282 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F COTTAGEGRV OR
2021-12-14 515-522 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 ALGONA IA
2021-12-14 515-588 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → METROPCS, INC. 5562 EAGLEGROVE IA
2021-12-14 517-326 0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J LANSING MI
2021-12-14 539-260 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 BROKENARRW OK
2021-12-14 539-277 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - OK 119F COWETA OK
2021-12-14 559-768 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 REEDLEY CA
2021-12-14 562-580 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 LONG BEACH CA
2021-12-14 585-604 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BATAVIA NY
2021-12-14 585-606 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 EROCHESTER NY
2021-12-14 650-609 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 MILLBRAE CA
2021-12-14 662-905 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - MS 992E LOUISVILLE MS
2021-12-14 667-386 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 ARBUTUS MD
2021-12-14 680-231 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 UTICA NY
2021-12-14 681-418 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F LEWISBURG WV
2021-12-14 681-990 0–9 XXXall 10 · 2 holders which blocks → COMMIO, LLC 939H CHRLSTNZN1 WV
2021-12-14 682-364 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 GRANBURY TX
2021-12-14 682-366 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 CLEBURNE TX
2021-12-14 689-266 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ORLANDO FL
2021-12-14 716-590 0XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 SILVER CRK NY
2021-12-14 762-313 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ROME GA
2021-12-14 769-278 0–9 XXXwhole prefix which blocks → POWERTEL MEMPHIS LICENSES, INC. 7474 JACKSON MS
2021-12-14 803-969 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F ALLENDALE SC
2021-12-14 804-696 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 MECHANCSVL VA
2021-12-14 806-850 0XXX which blocks → PANHANDLE TELECOMMUNICATION SYSTEMS, INC. - TX 6944 AMARILLO TX
2021-12-14 839-209 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F BATH SC
2021-12-14 839-210 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F BAMBERG SC
2021-12-14 840-210 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 FONTANA CA
2021-12-14 848-324 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREEHOLD NJ
2021-12-14 848-325 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BELMAR NJ
2021-12-14 863-317 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 WINTER HVN FL
2021-12-14 864-779 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F PICKENS SC
2021-12-14 864-781 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F PIEDMONT SC
2021-12-14 878-245 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 BEAVER FLS PA
2021-12-14 878-247 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 BELLEVRNON PA
2021-12-14 904-761 0–9 XXXwhole prefix which blocks → POWERTEL JACKSONVILLE LICENSES, INC. 7472 FERNADNBCH FL
2021-12-14 910-896 0XXX1XXX2XXX8XXX9XXX · 5 holders which blocks → ATLANTIC TELECOM MULTIMEDIA CONSOLIDATED, LLC - NC 452G ATKINSON NC
2021-12-14 912-546 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WAYCROSS GA
2021-12-14 914-540 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 WSCHSTZN01 NY
2021-12-14 929-813 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC- NY 384C NWYRCYZN07 NY
2021-12-14 930-254 0XXX8XXX9XXX which blocks → PEERLESS NETWORK OF INDIANA, LLC - IN 279F BLOOMINGTN IN

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.