NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 19
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
2005-09-21 920-504 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K SEYMOUR WI
2005-09-21 972-325 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SEAGOVILLE TX
2005-09-20 541-550 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 BEND OR
2005-09-20 850-794 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 GREENSBORO FL
2005-09-20 919-339 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 OXFORD NC
2005-09-20 919-440 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GOLDSBORO NC
2005-09-20 919-628 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 FOUR OAKS NC
2005-09-20 919-901 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 KENLY NC
2005-09-19 202-580 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC 6402 WSHNGTNZN1 DC
2005-09-19 281-789 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J PINEHURST TX
2005-09-19 347-617 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 NWYRCYZN08 NY
2005-09-19 347-730 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 NWYRCYZN08 NY
2005-09-19 347-853 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN06 NY
2005-09-19 347-860 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN07 NY
2005-09-19 480-321 0–9 XXXall 10 · 3 holders which blocks → QWEST CORPORATION 9636 PHOENIX AZ
2005-09-19 516-717 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NASSAUZN01 NY
2005-09-19 516-761 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2005-09-19 580-425 1XXX2XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 APACHE OK
2005-09-19 646-957 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
2005-09-19 727-612 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 CLEARWATER FL
2005-09-19 727-873 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 STPETERSBG FL
2005-09-19 845-803 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 MAHOPAC NY
2005-09-19 857-413 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BOSTON MA
2005-09-19 906-221 8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 IRON MT MI
2005-09-19 906-424 0XXX1XXX2XXX4XXX5XXX6XXX · 3 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K MENOMINEE MI
2005-09-19 907-539 not yet reported which blocks → GCI COMMUNICATION CORP. DBA GENERAL COMMUNICATION 6872 KODIAK AK
2005-09-19 954-707 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 FTLAUDERDL FL
2005-09-16 252-204 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 NORLINA NC
2005-09-16 252-373 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WILSON NC
2005-09-16 252-414 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENVILLE NC
2005-09-16 252-571 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 NEW BERN NC
2005-09-16 252-676 8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 ROANOKERPD NC
2005-09-16 252-933 6XXX7XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 KINSTON NC
2005-09-16 321-368 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 COCOA FL
2005-09-16 406-529 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 6564 MISSOULA MT
2005-09-16 407-690 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 ORLANDO FL
2005-09-16 561-713 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2005-09-16 727-902 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 CLEARWATER FL
2005-09-16 732-414 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J FREEHOLD NJ
2005-09-16 813-464 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-09-16 845-848 0–9 XXXall 10 · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 PIERMONT NY
2005-09-16 850-728 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TALLAHASSE FL
2005-09-16 910-316 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 LUMBERTON NC
2005-09-16 910-409 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WILMINGTON NC
2005-09-16 910-581 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 HOLLYRIDGE NC
2005-09-16 910-633 2XXX3XXX4XXX5XXX6XXX7XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 ST PAULS NC
2005-09-16 910-789 3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 BURGAW NC
2005-09-16 910-880 5XXX6XXX7XXX8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 BOLIVIA NC
2005-09-16 914-458 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 CHAPPAQUA NY
2005-09-16 954-864 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 FTLAUDERDL FL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.