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
Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2002-10-21 432-618 none assigned yet which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MIDLAND TX
2002-10-21 443-271 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2002-10-21 540-236 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 HARRISONBG VA
2002-10-21 608-561 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 EDGERTON WI
2002-10-21 631-276 none assigned yet which blocks → METROPCS, INC. 5562 HAMPTNBAYS NY
2002-10-21 631-294 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 YAPHANK NY
2002-10-21 774-200 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NOBROOKFLD MA
2002-10-21 781-264 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NORWELL MA
2002-10-21 843-568 not yet reported which blocks → SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2002-10-21 850-573 2XXX3XXX4XXX5XXX8XXX9XXX · 3 holders which blocks → POWERTEL JACKSONVILLE LICENSES, INC. 7472 MARIANNA FL
2002-10-21 978-257 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BARRE MA
2002-10-21 978-895 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 TEMPLETON MA
2002-10-19 208-627 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID 6565 SANDPOINT ID
2002-10-18 224-522 not yet reported which blocks → T-MOBILE USA, INC. 6529 NORTHBROOK IL
2002-10-18 224-717 2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 ZION IL
2002-10-18 224-805 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2002-10-18 240-277 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2002-10-18 240-367 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 FREDERICK MD
2002-10-18 281-642 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2002-10-18 309-207 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ILLINOISCY IL
2002-10-18 318-404 0XXX1XXX4XXX5XXX8XXX9XXX · 3 holders which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 SHREVEPORT LA
2002-10-18 330-651 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 YOUNGSTOWN OH
2002-10-18 334-433 not yet reported which blocks → PAETEC ITEL, LLC 829J ENTERPRISE AL
2002-10-18 405-638 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 ANADARKO OK
2002-10-18 435-862 0XXX1XXX2XXX3XXX4XXX5XXX which blocks → T-MOBILE USA, INC. 6529 ST GEORGE UT
2002-10-18 484-744 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHPHSBZN30 PA
2002-10-18 509-383 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 GRANGER WA
2002-10-18 575-808 4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RUIDOSO NM
2002-10-18 580-530 3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 HOBART OK
2002-10-18 580-706 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 MANGUM OK
2002-10-18 580-721 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 MARLOW OK
2002-10-18 614-714 1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WESTERVL OH
2002-10-18 631-235 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2002-10-18 706-614 0XXX1XXX2XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATHENS GA
2002-10-18 734-624 none assigned yet which blocks → METROPCS, INC. 5562 TRENTON MI
2002-10-18 787-298 none assigned yet which blocks → METROPCS, INC. 5562 PONCE PR
2002-10-18 813-388 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPANTH FL
2002-10-18 845-234 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NEWBURGH NY
2002-10-18 850-529 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 PENSACOLA FL
2002-10-18 936-266 not yet reported which blocks → CONSOLIDATED COMMUNICATIONS OF TEXAS COMPANY 2109 CONROE TX
2002-10-17 224-280 0XXX1XXX2XXX3XXX4XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 WAUKEGAN IL
2002-10-17 276-622 0XXX1XXX2XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 COLLINSVL VA
2002-10-17 304-908 0XXX1XXX2XXX3XXX5XXX6XXX7XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WV 9944 HNTNGTNZN4 WV
2002-10-17 304-948 1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → LUMOS NETWORKS INC. - VA 7849 HNTNGTNZN2 WV
2002-10-17 310-985 6XXX7XXX8XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 SNMN SNMN CA
2002-10-17 360-203 0XXX1XXX4XXX5XXX6XXX7XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 FORKS WA
2002-10-17 360-208 0–9 XXXall 10 · 5 holders which blocks → UNITED STATES CELLULAR - WA 6270 SOUTH BEND WA
2002-10-17 416-648 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Toronto —
2002-10-17 416-666 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Toronto —
2002-10-17 479-330 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GARFIELD AR

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.