NumberResearch Membership · Data 09/22/2026

Recent prefix assignments

354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026

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. 39
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 20
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
— 714-985 6XXX which blocks → PACIFIC BELL 9740 PLACENTIA CA
— 714-986 0XXX4XXX5XXX6XXX · 3 holders which blocks → PACIFIC BELL 9740 PLACENTIA CA
— 714-988 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 BREA CA
— 714-989 0XXX1XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 BREA CA
— 714-990 not yet reported which blocks → PACIFIC BELL 9740 BREA CA
— 714-991 not yet reported which blocks → PACIFIC BELL 9740 ANAHEIM CA
— 714-992 not yet reported which blocks → PACIFIC BELL 9740 FULLERTON CA
— 714-993 not yet reported which blocks → PACIFIC BELL 9740 PLACENTIA CA
— 714-994 not yet reported which blocks → PACIFIC BELL 9740 BUENA PARK CA
— 714-995 not yet reported which blocks → PACIFIC BELL 9740 CYPRESS CA
— 714-996 not yet reported which blocks → PACIFIC BELL 9740 PLACENTIA CA
— 714-997 not yet reported which blocks → PACIFIC BELL 9740 ORANGE CA
— 714-998 not yet reported which blocks → PACIFIC BELL 9740 ORANGE CA
— 714-999 not yet reported which blocks → PACIFIC BELL 9740 ANAHEIM CA
— 715-200 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - WI 225C OSSEO WI
— 715-202 1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 CORNELL WI
— 715-205 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RICE LAKE WI
— 715-206 1XXX2XXX7XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 STANLEY WI
— 715-208 1XXX2XXX4XXX5XXX7XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 HURLEY WI
— 715-209 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 BAYFIELD WI
— 715-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX WI
— 715-212 0XXX5XXX7XXX8XXX which blocks → METROPCS, INC. 5562 WAUSAU WI
— 715-213 none assigned yet which blocks → UNITED STATES CELLULAR - WI 6274 WISCOSNRPD WI
— 715-214 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → WISCONSIN BELL INC 9327 EAU CLAIRE WI
— 715-215 2XXX which blocks → AERIAL COMMUNICATIONS, INC. 6701 EAU CLAIRE WI
— 715-216 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 ANTIGO WI
— 715-217 2XXX3XXX5XXX6XXX7XXX · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J PEMBINE WI
— 715-218 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MERRILL WI
— 715-221 not yet reported which blocks → FRONTIER NORTH INC. - WI 0886 MARSHFIELD WI
— 715-223 5XXX7XXX9XXX · 2 holders which blocks → FRONTIER NORTH INC. - WI 0886 COLBY WI
— 715-224 3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → FRONTIER NORTH INC. - WI 0886 TOMAHAWK WI
— 715-225 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 EAU CLAIRE WI
— 715-228 not yet reported which blocks → UNION TEL. CO. 0962 COLOMA WI
— 715-229 0XXX1XXX3XXX5XXX6XXX7XXX · 5 holders which blocks → FRONTIER NORTH INC. - WI 0886 OWEN WI
— 715-231 none assigned yet which blocks → 24-7 TELCOM, INC. - WI 4855 MENOMONIE WI
— 715-232 not yet reported which blocks → WISCONSIN BELL INC 9327 MENOMONIE WI
— 715-233 8XXX which blocks → WISCONSIN BELL INC 9327 MENOMONIE WI
— 715-234 not yet reported which blocks → TELEPHONE USA OF WISCONSIN, LLC DBA CENTURYLINK 1155 RICE LAKE WI
— 715-235 not yet reported which blocks → WISCONSIN BELL INC 9327 MENOMONIE WI
— 715-236 9XXX which blocks → TELEPHONE USA OF WISCONSIN, LLC DBA CENTURYLINK 1155 RICE LAKE WI
— 715-237 not yet reported which blocks → CITIZENS TEL. COOP., INC. 0863 NEW AUBURN WI
— 715-238 2XXX4XXX6XXX · 3 holders which blocks → BADGER TELECOM, INC. 0844 GRANTON WI
— 715-239 1XXX2XXX5XXX9XXX · 3 holders which blocks → BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC 0924 CORNELL WI
— 715-241 1XXX which blocks → FRONTIER NORTH INC. - WI 0886 WAUSAU WI
— 715-243 4XXX5XXX9XXX · 2 holders which blocks → FRONTIER COMMUNICATIONS OF WISCONSIN LLC 0944 NEWRICHMND WI
— 715-244 2XXX4XXX7XXX · 3 holders which blocks → BRIGHTSPEED OF NORTHWEST WISCONSIN, LLC 0950 DAIRYLAND WI
— 715-246 not yet reported which blocks → FRONTIER COMMUNICATIONS OF WISCONSIN LLC 0944 NEWRICHMND WI
— 715-247 not yet reported which blocks → SOMERSET TEL. CO., INC. 0951 SOMERSET WI
— 715-248 0XXX2XXX5XXX6XXX8XXX · 2 holders which blocks → FRONTIER COMMUNICATIONS OF WISCONSIN LLC 0944 STARPRAIRI WI
— 715-249 not yet reported which blocks → UNION TEL. CO. 0962 HANCOCK WI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.