NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

2 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 — NPA 216
TELEPORT COMMUNICATIONS AMERICA, LLC - OH 1
ONVOY, LLC - OH 1
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
2003-03-03 216-245 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 TERRACE OH
2003-02-10 216-269 not yet reported which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2003-02-06 216-255 0XXX1XXX2XXX4XXX7XXX8XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CLEVELAND OH
2003-01-30 216-242 0XXX1XXX2XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J CLEVELAND OH
2003-01-06 216-526 7XXX which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2002-06-06 216-262 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEVELAND OH
2002-04-22 216-632 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → T-MOBILE USA, INC. 6529 MONTRSE OH
2002-04-22 216-773 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → T-MOBILE USA, INC. 6529 TERRACE OH
2002-04-22 216-856 3XXX4XXX5XXX6XXX7XXX8XXX which blocks → T-MOBILE USA, INC. 6529 INDEPNDNCE OH
2002-04-17 216-236 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FIRST COMMUNICATIONS, LLC 460K INDEPNDNCE OH
2002-04-14 216-253 not yet reported which blocks → T-MOBILE USA, INC. 6529 INDEPNDNCE OH
2002-04-08 216-235 not yet reported which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2002-04-05 216-254 none assigned yet which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2002-02-21 216-220 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MONTRSE OH
2001-12-17 216-240 none assigned yet which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2001-12-10 216-204 not yet reported which blocks → OHIO BELL TEL CO 9321 CLEVELAND OH
2001-11-27 216-246 5XXX6XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEVELAND OH
2001-11-19 216-376 not yet reported which blocks → T-MOBILE USA, INC. 6529 TERRACE OH
2001-09-29 216-355 not yet reported which blocks → T-MOBILE USA, INC. 6529 INDEPNDNCE OH
2001-09-23 216-322 none assigned yet which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2001-08-02 216-323 none assigned yet which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2001-06-23 216-571 8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEVELAND OH
2001-05-31 216-466 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CLEVELAND OH
2001-04-03 216-584 1XXX3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → OHIO BELL TEL CO 9321 MONTRSE OH
2001-04-03 216-593 3XXX4XXX6XXX8XXX9XXX · 2 holders which blocks → OHIO BELL TEL CO 9321 TERRACE OH
2001-03-27 216-525 9XXX which blocks → OHIO BELL TEL CO 9321 INDEPNDNCE OH
2001-03-13 216-835 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2001-02-26 216-324 none assigned yet which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2001-02-21 216-534 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEVELAND OH
2001-01-22 216-543 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEVELAND OH
2001-01-19 216-650 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEVELAND OH
2001-01-08 216-854 1XXX2XXX3XXX4XXX5XXX8XXX9XXX which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
— 216-201 0XXX1XXX9XXX · 3 holders which blocks → OHIO BELL TEL CO 9321 CLEVELAND OH
— 216-206 6XXX7XXX8XXX9XXX · 2 holders which blocks → OHIO BELL TEL CO 9321 CLEVELAND OH
— 216-207 not yet reported which blocks → SPOK, INC. 6630 CLEVELAND OH
— 216-210 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CLEVELAND OH
— 216-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 216-212 1XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CLEVELAND OH
— 216-213 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CLEVELAND OH
— 216-214 none assigned yet which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
— 216-215 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CLEVELAND OH
— 216-216 not yet reported which blocks → OH
— 216-217 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CLEVELAND OH
— 216-218 7XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CLEVELAND OH
— 216-219 8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CLEVELAND OH
— 216-221 not yet reported which blocks → OHIO BELL TEL CO 9321 CLEVELAND OH
— 216-222 not yet reported which blocks → OHIO BELL TEL CO 9321 CLEVELAND OH
— 216-223 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 TERRACE OH
— 216-224 0XXX2XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
— 216-225 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEVELAND OH

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.