NumberResearch Membership · Data 09/22/2026

Recent prefix assignments

354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026

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. 39
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 20
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
2022-10-11 838-838 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E TROY NY
2022-10-11 845-845 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 POUGHKEPSI NY
2022-10-11 856-476 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HADDONFLD NJ
2022-10-11 873-252 not yet reported which blocks → Fibernetics Corporation 464D Ottawa-Hull —
2022-10-11 873-341 not yet reported which blocks → Fibernetics Corporation 464D Trois-Rivieres —
2022-10-11 912-640 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E WAYCROSS GA
2022-10-11 912-680 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E SAVANNAH GA
2022-10-11 912-694 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E BRUNSWICK GA
2022-10-11 914-914 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E WSCHSTZN01 NY
2022-10-11 915-312 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 EL PASO TX
2022-10-11 934-934 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E WATER MILL NY
2022-10-11 980-397 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 MONROE NC
2022-10-10 212-516 0–9 XXXwhole prefix which blocks → ONVOY, LLC- NY 384C NWYRCYZN01 NY
2022-10-10 223-305 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → NUSO, LLC 732J DELTA PA
2022-10-10 252-470 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 SWNSBRWCAR NC
2022-10-10 272-300 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PLEASANTMT PA
2022-10-10 272-301 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 WILKSBARRE PA
2022-10-10 305-419 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C KEYS FL
2022-10-10 305-765 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H MIAMI FL
2022-10-10 341-218 0–9 XXXall 10 · 3 holders which blocks → COMCAST PHONE OF CALIFORNIA, LLC 394L OKLD FRTVL CA
2022-10-10 350-201 0XXX1XXX2XXX3XXX9XXX · 5 holders which blocks → COMCAST PHONE OF CALIFORNIA, LLC 394L WALLACE CA
2022-10-10 385-585 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - UT 871E PROVO UT
2022-10-10 412-284 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 732J PTTSBGZON8 PA
2022-10-10 423-998 6XXX7XXX8XXX9XXX which blocks → COMMIO, LLC 939H JELLICO TN
2022-10-10 440-433 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 LORAIN OH
2022-10-10 440-500 0–9 XXXall 10 · 2 holders which blocks → COMMIO, LLC 939H ELYRIA OH
2022-10-10 445-254 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F PHLDLPHZN4 PA
2022-10-10 445-260 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHLDLPHZN2 PA
2022-10-10 516-202 0–9 XXXwhole prefix which blocks → ONVOY, LLC- NY 384C NASSAUZN03 NY
2022-10-10 562-574 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E NORWALK CA
2022-10-10 582-219 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NUSO, LLC 732J CLEARFIELD PA
2022-10-10 582-221 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BOALSBURG PA
2022-10-10 607-418 0–9 XXXwhole prefix which blocks → ONVOY, LLC- NY 384C CANDOR NY
2022-10-10 618-873 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E BELLEVILLE IL
2022-10-10 618-890 1XXX9XXX · 2 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J FREEBURG IL
2022-10-10 618-894 9XXX which blocks → BOOST SUBSCRIBERCO L.L.C. 490J GRAFTON IL
2022-10-10 631-814 0–9 XXXwhole prefix which blocks → ONVOY, LLC- NY 384C BABYLON NY
2022-10-10 659-867 0–9 XXXall 10 · 2 holders which blocks → COMMIO, LLC 939H WARRIOR AL
2022-10-10 661-597 0XXX1XXX2XXX7XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MOJAVE CA
2022-10-10 680-245 0–9 XXXwhole prefix which blocks → ONVOY, LLC- NY 384C UTICA NY
2022-10-10 718-212 0–9 XXXwhole prefix which blocks → ONVOY, LLC- NY 384C NWYRCYZN14 NY
2022-10-10 718-516 0–9 XXXwhole prefix which blocks → ONVOY, LLC- NY 384C NWYRCYZN03 NY
2022-10-10 762-318 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E ROSSVILLE GA
2022-10-10 771-772 0–9 XXXwhole prefix which blocks → ONVOY, LLC - DC 850D WSHNGTNZN1 DC
2022-10-10 786-891 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C NORTH DADE FL
2022-10-10 786-892 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E PERRINE FL
2022-10-10 835-200 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 732J LEHIGHTON PA
2022-10-10 835-204 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 ALLENTOWN PA
2022-10-10 838-232 0–9 XXXwhole prefix which blocks → ONVOY, LLC- NY 384C SCHENCTADY NY
2022-10-10 840-218 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHINO CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.