NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

355 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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. 38
ONVOY, LLC - CA 31
NEW CINGULAR WIRELESS PCS, LLC - IL 28
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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
2023-05-23 803-803 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H COLUMBIA SC
2023-05-23 813-813 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H TAMPACEN FL
2023-05-23 825-489 not yet reported which blocks → Fibernetics Corporation 464D Airdrie —
2023-05-23 825-490 not yet reported which blocks → Fibernetics Corporation 464D Calgary —
2023-05-23 825-491 not yet reported which blocks → Fibernetics Corporation 464D Cochrane —
2023-05-23 825-492 not yet reported which blocks → Fibernetics Corporation 464D Okotoks —
2023-05-23 843-843 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H CHARLESTON SC
2023-05-23 865-252 0–9 XXXwhole prefix which blocks → ONVOY, LLC - TN 525E KNOXVILLE TN
2023-05-23 901-698 0–9 XXXall 10 · 2 holders which blocks → CALLWORKS CORPORATION 475J MEMPHIS TN
2023-05-23 904-921 0–9 XXXall 10 · 3 holders which blocks → POWERTEL JACKSONVILLE LICENSES, INC. 7472 ST JOHNS FL
2023-05-23 919-910 0–9 XXXwhole prefix which blocks → ONVOY, LLC - NC 638E RALEIGH NC
2023-05-23 954-954 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H FTLAUDERDL FL
2023-05-22 201-502 0–9 XXXwhole prefix which blocks → ONVOY, LLC - NJ 637C JERSEYCITY NJ
2023-05-22 202-771 0–9 XXXwhole prefix which blocks → ONVOY, LLC - DC 850D WSHNGTNZN1 DC
2023-05-22 210-512 0–9 XXXwhole prefix which blocks → ONVOY, LLC - TX 903C SANANTONIO TX
2023-05-22 215-215 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H PHPHSBZN41 PA
2023-05-22 215-267 0–9 XXXwhole prefix which blocks → ONVOY, LLC - PA 547E PHLDLPHZN1 PA
2023-05-22 218-649 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - MN 184D WARBA MN
2023-05-22 254-325 0–9 XXXall 10 · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J KILLEEN TX
2023-05-22 304-304 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H CHRLSTNZN1 WV
2023-05-22 312-748 0–9 XXXwhole prefix which blocks → ONVOY, LLC 224C CHICGOZN01 IL
2023-05-22 317-463 0–9 XXXwhole prefix which blocks → ONVOY, LLC - IN 097D INDIANAPLS IN
2023-05-22 339-238 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J NEEDHAM MA
2023-05-22 347-718 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC- NY 384C NWYRCYZN09 NY
2023-05-22 404-470 0–9 XXXwhole prefix which blocks → ONVOY, LLC - GA 067D ATLANTA GA
2023-05-22 447-255 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 2 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J ALEXANDER IL
2023-05-22 472-210 0–9 XXXall 10 · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J FAYETTEVL NC
2023-05-22 557-204 0–9 XXXall 10 · 6 holders which blocks → FIVE9, INC. 598J ST LOUIS MO
2023-05-22 601-601 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H JACKSON MS
2023-05-22 608-902 0XXX1XXX8XXX · 2 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J DICKEYVL WI
2023-05-22 614-614 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H COLUMBUS OH
2023-05-22 678-470 0–9 XXXwhole prefix which blocks → ONVOY, LLC - GA 067D ATLANTA SO GA
2023-05-22 702-725 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NV 029F LAS VEGAS NV
2023-05-22 703-202 0–9 XXXwhole prefix which blocks → ONVOY, LLC - VA 138E WSNGTNZN08 VA
2023-05-22 706-912 0–9 XXXall 10 · 2 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 TOCCOA GA
2023-05-22 732-808 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NJ 637C BOUNDBROOK NJ
2023-05-22 757-757 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H NRFOLKZON1 VA
2023-05-22 770-470 0–9 XXXwhole prefix which blocks → ONVOY, LLC - GA 067D BUFORD GA
2023-05-22 801-435 0–9 XXXwhole prefix which blocks → ONVOY, LLC - UT 871E SALT LAKE UT
2023-05-22 805-805 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H SANBARBARA CA
2023-05-22 812-812 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H EVANSVILLE IN
2023-05-22 817-214 0–9 XXXwhole prefix which blocks → ONVOY, LLC - TX 903C FORT WORTH TX
2023-05-22 858-858 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H SNDG SNDG CA
2023-05-22 909-909 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H FONTANA CA
2023-05-22 916-916 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H SCRM MAIN CA
2023-05-22 939-368 0–9 XXXwhole prefix which blocks → SUNCOM DBA T-MOBILE USA 8645 PONCE PR
2023-05-19 219-332 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D LOWELL IN
2023-05-19 279-237 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C SCRM MAIN CA
2023-05-19 308-266 1XXX2XXX5XXX7XXX · 4 holders which blocks → ONVOY, LLC - NE 549E ATLANTA NE
2023-05-19 308-272 1XXX which blocks → ONVOY, LLC - NE 549E GREELEY NE

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.