NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 27
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025
Download CSV ↓
Quick find in this area code:
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 516-986 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 FARMINGDL NY
— 516-987 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
— 516-988 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NASSAUZN05 NY
— 516-991 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 CENTRAISLP NY
— 516-992 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN06 NY
— 516-993 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
— 516-994 none assigned yet which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SELDEN NY
— 516-996 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN05 NY
— 516-997 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN05 NY
— 516-998 4XXX5XXX6XXX8XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 NASSAUZN02 NY
— 517-202 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 LANSING MI
— 517-203 5XXX6XXX8XXX9XXX · 3 holders which blocks → MICHIGAN BELL TEL CO 9323 LANSING MI
— 517-204 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 LANSING MI
— 517-206 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 JACKSON MI
— 517-207 not yet reported which blocks → TELNET WORLDWIDE, INC. 817J ADRIAN MI
— 517-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
— 517-213 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 CHARLOTTE MI
— 517-214 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 LANSING MI
— 517-217 not yet reported which blocks → TC3 TELECOM, INC. - MI 3459 CLINTON MI
— 517-223 not yet reported which blocks → MICHIGAN BELL TEL CO 9323 FOWLERVL MI
— 517-226 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 LANSING MI
— 517-228 not yet reported which blocks → SPOK, INC. 6630 LANSING MI
— 517-229 not yet reported which blocks → SPOK, INC. 6630 LANSING MI
— 517-230 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 LANSING MI
— 517-231 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 CHARLOTTE MI
— 517-232 not yet reported which blocks → SPOK, INC. 6630 LANSING MI
— 517-236 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DIMONDALE MI
— 517-237 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLCV - MI 543C LANSING MI
— 517-238 6XXX which blocks → FRONTIER NORTH, INC. - MI 0695 COLDWTR LK MI
— 517-241 not yet reported which blocks → MICHIGAN BELL TEL CO 9323 LANSING MI
— 517-242 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 LANSING MI
— 517-243 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 LANSING MI
— 517-244 5XXX6XXX7XXX which blocks → MICHIGAN BELL TEL CO 9323 MASON MI
— 517-248 not yet reported which blocks → MI
— 517-250 8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSON MI
— 517-251 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 LANSING MI
— 517-252 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ADDISON MI
— 517-254 not yet reported which blocks → FRONTIER COMMUNICATIONS OF MICHIGAN, INC. 4417 FRONTIER MI
— 517-255 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 LANSING MI
— 517-256 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 LANSING MI
— 517-260 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ADRIAN MI
— 517-262 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 JACKSON MI
— 517-263 not yet reported which blocks → FRONTIER NORTH, INC. - MI 0695 ADRIAN MI
— 517-264 not yet reported which blocks → FRONTIER NORTH, INC. - MI 0695 ADRIAN MI
— 517-265 not yet reported which blocks → FRONTIER NORTH, INC. - MI 0695 ADRIAN MI
— 517-266 not yet reported which blocks → FRONTIER NORTH, INC. - MI 0695 ADRIAN MI
— 517-267 not yet reported which blocks → MICHIGAN BELL TEL CO 9323 LANSING MI
— 517-268 1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 HOLT MI
— 517-269 not yet reported which blocks → MI
— 517-270 5XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ADRIAN MI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.