NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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, all time — NPA 330
OHIO BELL TEL CO 198
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 116
NEW CINGULAR WIRELESS PCS, LLC - IL 64
T-MOBILE USA, INC. 62
BRIGHTSPEED OF NORTHWEST OHIO, INC. 60
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
— 330-897 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
— 330-963 not yet reported which blocks → WINDSTREAM WESTERN RESERVE, INC. 0666 TWINSBURG OH
— 330-965 not yet reported which blocks → OHIO BELL TEL CO 9321 YOUNGSTOWN OH
— 330-966 not yet reported which blocks → OHIO BELL TEL CO 9321 NO CANTON OH
— 330-968 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 KENT OH
— 330-971 not yet reported which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-972 not yet reported which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-976 not yet reported which blocks → OH
— 330-981 not yet reported which blocks → SPOK, INC. 6630 AKRON OH
— 330-982 not yet reported which blocks → ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E SMITHVILLE OH
— 330-983 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 AKRON OH
— 330-995 not yet reported which blocks → WINDSTREAM WESTERN RESERVE, INC. 0666 AURORA OH
— 330-996 not yet reported which blocks → OHIO BELL TEL CO 9321 AKRON OH

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.