NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

338 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
8X8, INC. 38
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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
2001-10-19 352-452 not yet reported which blocks → PAETEC ITEL, LLC 829J BELLEVIEW FL
2001-10-19 514-969 not yet reported which blocks → Fido Solutions Inc. 5643 Montreal —
2001-10-19 519-702 not yet reported which blocks → Fido Solutions Inc. 5643 London —
2001-10-19 760-271 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OCSD CRLS CA
2001-10-19 760-574 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 INDIO CA
2001-10-19 760-898 7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALM SPG CA
2001-10-19 786-286 not yet reported which blocks → METROPCS, INC. 5562 PERRINE FL
2001-10-19 805-706 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNLUSOBSPO CA
2001-10-19 818-307 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CANOGAPARK CA
2001-10-19 850-550 not yet reported which blocks → PAETEC ITEL, LLC 829J CHERRYLAKE FL
2001-10-19 909-762 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 POMONA CA
2001-10-19 941-655 7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J PUNTAGORDA FL
2001-10-19 951-836 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RIVERSIDE CA
2001-10-18 202-409 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN1 DC
2001-10-18 204-572 not yet reported which blocks → MTS Inc. 991B Dauphin —
2001-10-18 209-423 0XXX2XXX · 2 holders which blocks → METROPCS, INC. 5562 STOCKTON CA
2001-10-18 209-570 6XXX7XXX8XXX9XXX which blocks → METROPCS, INC. 5562 LODI CA
2001-10-18 214-783 none assigned yet which blocks → METROPCS, INC. 5562 IRVING TX
2001-10-18 217-918 5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DANVILLE IL
2001-10-18 224-629 1XXX2XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 ELGIN IL
2001-10-18 310-699 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SNMN SNMN CA
2001-10-18 310-920 not yet reported which blocks → T-MOBILE USA, INC. 6529 CMTN GRDN CA
2001-10-18 323-481 none assigned yet which blocks → METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2001-10-18 323-687 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LSAN DA 14 CA
2001-10-18 337-256 4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEW IBERIA LA
2001-10-18 337-258 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2001-10-18 404-454 not yet reported which blocks → METROPCS, INC. 5562 ATLANTA GA
2001-10-18 408-401 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX which blocks → METROPCS, INC. 5562 SNJS WEST CA
2001-10-18 408-667 not yet reported which blocks → T-MOBILE USA, INC. 6529 SNJS NORTH CA
2001-10-18 408-898 1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 6 holders which blocks → T-MOBILE USA, INC. 6529 SARATOGA CA
2001-10-18 412-212 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PTGSBNZN12 PA
2001-10-18 412-219 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J PTGSBNZN18 PA
2001-10-18 412-428 1XXX2XXX3XXX4XXX6XXX8XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTGSBNZN14 PA
2001-10-18 412-479 1XXX7XXX9XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTGSBNZN12 PA
2001-10-18 412-662 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PTGSBNZN22 PA
2001-10-18 415-425 not yet reported which blocks → T-MOBILE USA, INC. 6529 SNFC MT-EV CA
2001-10-18 415-867 not yet reported which blocks → T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2001-10-18 415-877 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 MILLVALLEY CA
2001-10-18 504-952 1XXX2XXX3XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWORLEANS LA
2001-10-18 510-224 2XXX3XXX4XXX5XXX9XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 HRCUL-RODE CA
2001-10-18 510-825 none assigned yet which blocks → METROPCS, INC. 5562 HAYWARD CA
2001-10-18 530-394 1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 QUINCY CA
2001-10-18 530-736 2XXX3XXX4XXX5XXX7XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 RED BLUFF CA
2001-10-18 551-804 0XXX2XXX3XXX4XXX5XXX6XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 WYCKOFF NJ
2001-10-18 613-252 not yet reported which blocks → Fido Solutions Inc. 5643 Ottawa-Hull —
2001-10-18 619-454 none assigned yet which blocks → METROPCS, INC. 5562 LA MESA CA
2001-10-18 619-654 none assigned yet which blocks → METROPCS, INC. 5562 EL CAJON CA
2001-10-18 636-263 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → AT&T - LOCAL 7421 HARVESTER MO
2001-10-18 646-262 not yet reported which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2001-10-18 646-267 not yet reported which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY

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.