NumberResearch Membership · Data 09/23/2026

Recent prefix assignments

357 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/23/2026

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 27
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
2002-04-23 740-807 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - OH 464C NEWMTMORAS OH
2002-04-23 740-836 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 SOMERSET OH
2002-04-23 740-841 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - OH 464C NEWPORT OH
2002-04-23 740-847 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → ONVOY, LLC - OH 464C THORNVILLE OH
2002-04-23 740-875 0–9 XXXall 10 · 8 holders which blocks → ONVOY, LLC - OH 464C VINTON OH
2002-04-23 740-891 0XXX1XXX2XXX3XXX7XXX8XXX · 3 holders which blocks → FIRST COMMUNICATIONS, LLC 460K ZANESVILLE OH
2002-04-23 740-910 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → FIRST COMMUNICATIONS, LLC 460K LONDON OH
2002-04-23 740-923 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - OH 464C NORWICH OH
2002-04-23 740-996 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → FIRST COMMUNICATIONS, LLC 460K STEUBENVL OH
2002-04-23 740-997 1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → FIRST COMMUNICATIONS, LLC 460K BEALLSVL OH
2002-04-23 740-999 1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - OH 464C CORNING OH
2002-04-23 787-436 not yet reported which blocks → LIBERTY MOBILE PUERTO RICO INC. 639J CAGUAS PR
2002-04-23 810-420 0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 MARINECITY MI
2002-04-23 810-531 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 PORT HURON MI
2002-04-23 810-625 2XXX3XXX4XXX which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2002-04-23 859-509 none assigned yet which blocks → METROPCS, INC. 5562 LEXINGTON KY
2002-04-23 860-933 5XXX6XXX7XXX8XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 WILLIMNTIC CT
2002-04-23 860-966 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 HARTFORD CT
2002-04-23 860-967 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CT 4800 HARTFORD CT
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
2002-04-22 225-392 not yet reported which blocks → ADVANCED TEL., INC. - LA 8839 ZACHARY LA
2002-04-22 231-682 not yet reported which blocks → TELNET WORLDWIDE, INC. 817J ALDEN MI
2002-04-22 319-243 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → QWEST CORPORATION 9631 CEDARFALLS IA
2002-04-22 330-396 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 MONTROSE OH
2002-04-22 334-268 4XXX5XXX8XXX9XXX · 3 holders which blocks → METROPCS, INC. 5562 TROY AL
2002-04-22 337-325 not yet reported which blocks → ADVANCED TEL., INC. - LA 8839 CARENCRO LA
2002-04-22 337-355 not yet reported which blocks → ADVANCED TEL., INC. - LA 8839 FRANKLIN LA
2002-04-22 409-299 3XXX4XXX5XXX8XXX9XXX · 2 holders which blocks → METROPCS, INC. 5562 BEAUMONT TX
2002-04-22 423-428 8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J DAYTON TN
2002-04-22 440-212 5XXX6XXX7XXX8XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 STRONGSVL OH
2002-04-22 440-360 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 TRINITY OH
2002-04-22 440-681 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 HILLCREST OH
2002-04-22 440-749 3XXX5XXX6XXX7XXX8XXX which blocks → T-MOBILE USA, INC. 6529 WILLOUGHBY OH
2002-04-22 440-832 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 BRECKSVL OH
2002-04-22 517-621 not yet reported which blocks → TELNET WORLDWIDE, INC. 817J MUNITH MI
2002-04-22 517-634 not yet reported which blocks → TELNET WORLDWIDE, INC. 817J FITCHBURG MI
2002-04-22 517-653 not yet reported which blocks → TELNET WORLDWIDE, INC. 817J BURLINGTON MI
2002-04-22 517-671 not yet reported which blocks → TELNET WORLDWIDE, INC. 817J TEKONSHA MI
2002-04-22 517-710 not yet reported which blocks → TELNET WORLDWIDE, INC. 817J STOCKBDG MI
2002-04-22 517-795 1XXX2XXX which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 JACKSON MI
2002-04-22 517-872 not yet reported which blocks → TELNET WORLDWIDE, INC. 817J RIVES JCT MI
2002-04-22 562-762 2XXX3XXX4XXX · 2 holders which blocks → METROPCS NETWORKS, LLC 899D WHITTIER CA
2002-04-22 706-403 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 CALHOUN GA
2002-04-22 706-405 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 COLUMBUS GA
2002-04-22 706-407 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 LAGRANGE GA
2002-04-22 706-408 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ELBERTON GA
2002-04-22 786-262 not yet reported which blocks → METROPCS, INC. 5562 NORTH DADE FL
2002-04-22 802-323 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VT 6390 NEWPORT VT

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.