NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

355 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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
ONVOY, LLC - CA 31
NEW CINGULAR WIRELESS PCS, LLC - IL 28
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
2002-07-09 434-604 1XXX2XXX3XXX4XXX5XXX8XXX which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 EMPORIA VA
2002-07-09 662-581 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TELEPAK NETWORKS, INC. - MS 5278 GREENWOOD MS
2002-07-09 706-533 none assigned yet which blocks → METROPCS, INC. 5562 AUGUSTA GA
2002-07-09 706-986 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → METROPCS, INC. 5562 THOMSON GA
2002-07-09 717-479 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 NEW OXFORD PA
2002-07-09 774-264 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WESTPORT MA
2002-07-09 774-265 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NORTON MA
2002-07-09 774-266 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 MANSFIELD MA
2002-07-09 828-361 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 SUIT NC
2002-07-09 978-760 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MAYNARD MA
2002-07-09 978-761 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LOWELL MA
2002-07-08 250-521 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Trail —
2002-07-08 252-573 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 7 holders which blocks → METROPCS, INC. 5562 KLDEVILHLS NC
2002-07-08 252-622 0XXX2XXX3XXX4XXX5XXX6XXX · 3 holders which blocks → METROPCS, INC. 5562 MOREHEADCY NC
2002-07-08 252-623 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 WASHINGTON NC
2002-07-08 260-227 3XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 UNIONDALE IN
2002-07-08 260-273 3XXX4XXX5XXX6XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 BLUFFTON IN
2002-07-08 330-523 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → WINDSTREAM WESTERN RESERVE, INC. 0666 RICHFIELD OH
2002-07-08 508-308 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FRAMINGHAM MA
2002-07-08 508-446 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FRANKLIN MA
2002-07-08 519-313 not yet reported which blocks → TELUS Mobility 8303 Mount Forest —
2002-07-08 519-314 not yet reported which blocks → TELUS Mobility 8303 Mount Forest —
2002-07-08 519-919 not yet reported which blocks → TELUS Mobility 8303 Windsor —
2002-07-08 603-702 4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → BELL ATLANTIC MOBILE, INC 6386 KINGSTON NH
2002-07-08 603-721 0XXX3XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → METROPCS, INC. 5562 MILFORD NH
2002-07-08 603-818 0XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 DERRY NH
2002-07-08 603-998 0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → METROPCS, INC. 5562 LACONIA NH
2002-07-08 609-309 0–9 XXXall 10 · 7 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 HOPEWELL NJ
2002-07-08 609-733 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J BURLINGTON NJ
2002-07-08 613-878 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Ottawa-Hull —
2002-07-08 715-781 9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 HUDSON WI
2002-07-08 828-489 0XXX3XXX4XXX5XXX · 3 holders which blocks → METROPCS, INC. 5562 HENDERSNVL NC
2002-07-08 864-986 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → METROPCS, INC. 5562 CLEMSON SC
2002-07-05 302-293 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 WILMINGTON DE
2002-07-05 774-261 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 W BOYLSTON MA
2002-07-05 815-712 none assigned yet which blocks → T-MOBILE USA, INC. 6529 LA SALLE IL
2002-07-05 815-719 2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 PRINCETON IL
2002-07-05 815-955 none assigned yet which blocks → METROPCS, INC. 5562 JOLIET IL
2002-07-05 815-970 8XXX9XXX · 2 holders which blocks → METROPCS, INC. 5562 SYCAMORE IL
2002-07-05 918-706 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2002-07-05 918-707 1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → T-MOBILE USA, INC. 6529 EUFAULA OK
2002-07-05 978-846 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WESTFORD MA
2002-07-04 218-288 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E VIRGINIA MN
2002-07-03 240-304 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN5 MD
2002-07-03 240-398 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN3 MD
2002-07-03 508-415 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FALL RIVER MA
2002-07-03 508-659 0–9 XXXall 10 · 7 holders which blocks → PAETEC ITEL, LLC 829J BRIDGEWTR MA
2002-07-03 570-574 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 WILKSBARRE PA
2002-07-03 570-575 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 SCRANTON PA
2002-07-03 724-875 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 GREENSBURG PA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.