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
— 330-878 2XXX3XXX4XXX8XXX · 3 holders which blocks → FRONTIER NORTH, INC. - OH 0615 STRASBURG OH
— 330-879 0XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → OHIO BELL TEL CO 9321 NAVARRE OH
— 330-880 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K MASSILLON OH
— 330-882 1XXX7XXX8XXX · 2 holders which blocks → OHIO BELL TEL CO 9321 MANCHESTR OH
— 330-884 8XXX9XXX which blocks → OHIO BELL TEL CO 9321 YOUNGSTOWN OH
— 330-885 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 YOUNGSTOWN OH
— 330-887 2XXX3XXX9XXX · 3 holders which blocks → FRONTIER NORTH, INC. - OH 0615 WESTFLDCTR OH
— 330-889 1XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 BRISTOLVL OH
— 330-893 6XXX8XXX · 2 holders which blocks → FRONTIER NORTH, INC. - OH 0615 BERLIN OH
— 330-894 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - OH 0615 EROCHESTER OH
— 330-895 not yet reported which blocks → PATTERSONVILLE TEL. CO. 0651 PATTERSNVL OH
— 330-896 not yet reported which blocks → OHIO BELL TEL CO 9321 GREENSBURG OH
— 330-897 5XXX9XXX which blocks → FRONTIER NORTH, INC. - OH 0615 BALTIC OH
— 330-898 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 WARREN OH
— 330-899 3XXX4XXX6XXX7XXX · 3 holders which blocks → OHIO BELL TEL CO 9321 GREENSBURG OH
— 330-901 not yet reported which blocks → SPOK, INC. 6630 ALLIANCE OH
— 330-903 6XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 AKRON OH
— 330-904 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CANTON OH
— 330-908 not yet reported which blocks → WINDSTREAM WESTERN RESERVE, INC. 0666 NORTHFIELD OH
— 330-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 330-912 not yet reported which blocks → SPOK, INC. 6630 KENT OH
— 330-914 not yet reported which blocks → SPOK, INC. 6630 AKRON OH
— 330-916 not yet reported which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-920 not yet reported which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-921 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 COLUMBIANA OH
— 330-922 not yet reported which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-923 not yet reported which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-924 1XXX6XXX7XXX8XXX · 4 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 JOHNSTON OH
— 330-925 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 RITTMAN OH
— 330-926 4XXX6XXX7XXX8XXX · 2 holders which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-927 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 RITTMAN OH
— 330-928 not yet reported which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-929 not yet reported which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-935 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → OHIO BELL TEL CO 9321 MARLBORO OH
— 330-936 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CANTON OH
— 330-938 5XXX8XXX · 2 holders which blocks → OHIO BELL TEL CO 9321 SEBRING OH
— 330-939 none assigned yet which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 STERLING OH
— 330-940 1XXX9XXX · 2 holders which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-944 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 SMITHVILLE OH
— 330-945 0XXX which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-946 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K FREDECKSBG OH
— 330-947 4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → OHIO BELL TEL CO 9321 ATWATER OH
— 330-948 not yet reported which blocks → FRONTIER NORTH, INC. - OH 0615 LODI OH
— 330-950 not yet reported which blocks → OH
— 330-955 not yet reported which blocks → SPOK, INC. 6630 CANTON OH
— 330-957 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 AKRON OH
— 330-958 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 AKRON OH
— 330-959 not yet reported which blocks → OH
— 330-961 0–9 XXXall 10 · 8 holders which blocks → ONVOY, LLC - OH 464C UNIONTOWN OH
— 330-962 0XXX1XXX2XXX which blocks → T-MOBILE USA, INC. 6529 AKRON OH

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.