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
2022-11-03 341-223 0–9 XXXall 10 · 4 holders which blocks → COMMIO, LLC 939H OKLD ALMD CA
2022-11-03 352-761 0–9 XXXall 10 · 2 holders which blocks → COMMIO, LLC 939H TAVARES FL
2022-11-03 352-762 0–9 XXXall 10 · 4 holders which blocks → COMMIO, LLC 939H OLD TOWN FL
2022-11-03 442-393 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → COMMIO, LLC 939H CALIPATRIA CA
2022-11-03 505-537 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALBUQURQUE NM
2022-11-03 561-897 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2022-11-03 562-603 0–9 XXXall 10 · 5 holders which blocks → METROPCS NETWORKS, LLC 899D NORWALK CA
2022-11-03 582-252 2XXX5XXX · 2 holders which blocks → ONVOY, LLC - PA 547E RIDGWAY PA
2022-11-03 662-309 0–9 XXXall 10 · 4 holders which blocks → COMMIO, LLC 939H BATESVILLE MS
2022-11-03 682-686 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - TX 903C NRICHLDHLS TX
2022-11-03 719-682 2XXX3XXX7XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CO 6118 HUGO CO
2022-11-03 785-308 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WETMORE KS
2022-11-03 826-867 0XXX1XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - VA 138E UNION HALL VA
2022-11-03 838-259 0–9 XXXall 10 · 2 holders which blocks → COMMIO, LLC 939H AMSTERDAM NY
2022-11-03 848-341 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → COMMIO, LLC 939H BELMAR NJ
2022-11-03 854-354 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - SC 548E MTPLEASANT SC
2022-11-03 858-363 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → COMMIO, LLC 939H JACUMBA CA
2022-11-03 870-908 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → COMMIO, LLC 939H ARKADLPHIA AR
2022-11-03 878-263 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SHARPSVL PA
2022-11-03 878-898 7XXX8XXX9XXX which blocks → ONVOY, LLC - PA 547E COOPERSTWN PA
2022-11-03 910-996 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NC 638E PEMBROKE NC
2022-11-03 943-343 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H GAINESVL GA
2022-11-03 980-452 0–9 XXXwhole prefix which blocks → ONVOY, LLC - NC 638E LINCOLNTON NC
2022-11-03 984-310 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CLAYTON NC
2022-11-02 220-239 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OH 464C MARION OH
2022-11-02 220-240 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OH 464C CHESAPEAKE OH
2022-11-02 220-324 2XXX3XXX4XXX · 2 holders which blocks → ONVOY, LLC - OH 464C NEWMRSHFLD OH
2022-11-02 220-740 0XXX1XXX7XXX · 2 holders which blocks → ONVOY, LLC - OH 464C LOWERSALEM OH
2022-11-02 346-603 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ALVIN TX
2022-11-02 380-324 0–9 XXXwhole prefix which blocks → ONVOY, LLC - OH 464C GAHANNA OH
2022-11-02 567-456 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OH 464C PERRYSBURG OH
2022-11-02 629-285 0–9 XXXall 10 · 2 holders which blocks → COMMIO, LLC 939H NASHVILLE TN
2022-11-02 785-247 0XXX1XXX2XXX which blocks → COMMIO, LLC 939H DELIA KS
2022-11-02 785-281 8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BARNES KS
2022-11-02 848-340 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PERTHAMBOY NJ
2022-11-02 862-408 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PASSAIC NJ
2022-11-02 945-279 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J DALLAS TX
2022-11-02 971-442 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2022-11-02 979-346 0–9 XXXall 10 · 2 holders which blocks → COMMIO, LLC 939H MATAGORDA TX
2022-11-01 219-269 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 GARY IN
2022-11-01 354-580 not yet reported which blocks → TELUS Mobility 8303 Valleyfield —
2022-11-01 354-999 not yet reported which blocks → TELUS Mobility 8303 St-Jerome —
2022-11-01 725-485 0–9 XXXwhole prefix which blocks → ONVOY, LLC - NV 029F LAS VEGAS NV
2022-11-01 864-856 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 4 holders which blocks → ONVOY, LLC - SC 548E HODGES SC
2022-11-01 913-456 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - KS 8995 KANSASCITY KS
2022-10-31 239-402 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - FL 937C CAPE CORAL FL
2022-10-31 252-664 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks → METROPCS, INC. 5562 HALIFAX NC
2022-10-31 321-641 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C TITUSVILLE FL
2022-10-31 448-450 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → ONVOY, LLC - FL 937C YONGSTFNTN FL
2022-10-31 561-956 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C DELRAY BCH FL

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.