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
2001-10-12 518-669 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBANY NY
2001-10-12 562-519 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LONG BEACH CA
2001-10-12 575-704 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 LOVINGTON NM
2001-10-12 575-937 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → METROPCS, INC. 5562 RUIDOSO NM
2001-10-12 616-648 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2001-10-12 702-290 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LAS VEGAS NV
2001-10-12 715-771 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → METROPCS, INC. 5562 RHINELANDR WI
2001-10-12 801-824 8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
2001-10-12 806-928 3XXX which blocks → T-MOBILE USA, INC. 6529 LUBBOCK TX
2001-10-12 971-230 4XXX8XXX which blocks → PAETEC ITEL, LLC 829J PORTLAND OR
2001-10-12 971-233 2XXX3XXX4XXX5XXX6XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J CLACKAMAS OR
2001-10-11 267-222 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LANSDALE PA
2001-10-11 325-864 2XXX4XXX5XXX6XXX7XXX8XXX which blocks → T-MOBILE USA, INC. 6529 ABILENE TX
2001-10-11 325-899 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 ABILENE TX
2001-10-11 347-453 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN10 NY
2001-10-11 347-454 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN10 NY
2001-10-11 403-375 not yet reported which blocks → TELUS 8084 Calgary —
2001-10-11 417-423 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 CARTHAGE MO
2001-10-11 425-518 none assigned yet which blocks → T-MOBILE USA, INC. 6529 BELLEVUE WA
2001-10-11 480-593 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2001-10-11 484-354 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 W CHESTER PA
2001-10-11 484-515 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ALLENTOWN PA
2001-10-11 508-207 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWBEDFORD MA
2001-10-11 508-250 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 FRAMINGHAM MA
2001-10-11 516-557 0XXX2XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NASSAUZN09 NY
2001-10-11 614-330 0XXX2XXX3XXX4XXX7XXX · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 COLUMBUS OH
2001-10-11 617-340 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J NEWTON MA
2001-10-11 717-350 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARISBGZN1 PA
2001-10-11 787-526 none assigned yet which blocks → SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2001-10-11 787-942 none assigned yet which blocks → SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2001-10-11 803-664 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ORANGEBURG SC
2001-10-11 832-434 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2001-10-11 832-788 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2001-10-11 832-867 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2001-10-11 832-868 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2001-10-11 832-877 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2001-10-11 856-693 7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WOODBURY NJ
2001-10-11 857-209 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CAMBRIDGE MA
2001-10-11 952-270 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TWINCITIES MN
2001-10-11 972-750 0–9 XXXall 10 · 5 holders which blocks → AT&T - LOCAL 7421 TERRELL TX
2001-10-10 267-291 0XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J NEWTOWN PA
2001-10-10 631-887 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J HAMPTNBAYS NY
2001-10-10 661-492 none assigned yet which blocks → T-MOBILE USA, INC. 6529 LANCASTER CA
2001-10-10 661-709 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 DELANO CA
2001-10-10 864-366 not yet reported which blocks → WEST CAROLINA COMMUNICATIONS, LLC - SC 5872 ABBEVILLE SC
2001-10-10 914-488 0–9 XXXall 10 · 8 holders which blocks → PAETEC ITEL, LLC 829J OSSINING NY
2001-10-09 217-714 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHAMPAURBN IL
2001-10-09 219-310 0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 CROWNPOINT IN
2001-10-09 267-221 0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 DOYLESTOWN PA
2001-10-09 267-281 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 SOUDERTON PA

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.