NumberResearch Membership · Data 09/22/2026

Recent prefix assignments

354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026

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. 39
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 20
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
2004-02-24 580-984 none assigned yet which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 POND CREEK OK
2004-02-24 785-991 9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS 6532 WILLIS KS
2004-02-24 940-882 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 WICHITAFLS TX
2004-02-24 956-323 0–9 XXXall 10 · 2 holders which blocks → SOUTHWESTERN BELL 9533 MISSION TX
2004-02-23 217-313 2XXX3XXX4XXX5XXX6XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 LITCHFIELD IL
2004-02-23 219-202 0–9 XXXall 10 · 7 holders which blocks → FBN INDIANA, INC. - IN 4117 WHEATFIELD IN
2004-02-23 239-989 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J FORT MYERS FL
2004-02-23 256-200 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 ARAB AL
2004-02-23 715-413 2XXX8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MASON WI
2004-02-23 715-580 1XXX2XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 NAMEKGONLK WI
2004-02-23 931-200 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 CROSSVILLE TN
2004-02-20 203-920 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 NEW CANAAN CT
2004-02-20 203-955 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 FAIRFIELD CT
2004-02-20 203-986 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 OLDGRNWICH CT
2004-02-20 561-214 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2004-02-20 732-909 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F DUNELLEN NJ
2004-02-20 740-990 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 DELAWARE OH
2004-02-20 803-835 not yet reported which blocks → FORT MILL TEL. CO. 0521 FORT MILL SC
2004-02-19 250-209 not yet reported which blocks → TELUS Mobility 8301 Port Alice —
2004-02-19 646-696 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2004-02-19 780-554 not yet reported which blocks → TELUS Mobility 8301 Edmonton —
2004-02-19 780-686 not yet reported which blocks → TELUS Mobility 8301 Edmonton —
2004-02-18 228-223 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GULFPORT MS
2004-02-18 403-554 not yet reported which blocks → TELUS Mobility 8301 Calgary —
2004-02-18 403-837 not yet reported which blocks → Bell Mobility 6574 Calgary —
2004-02-18 418-554 not yet reported which blocks → TELUS Mobility 8303 Quebec —
2004-02-18 514-964 not yet reported which blocks → Bell Canada 8050 Montreal —
2004-02-18 561-201 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 WPALMBEACH FL
2004-02-18 631-338 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2004-02-18 903-230 none assigned yet which blocks → ONVOY, LLC - TX 903C LONGVIEW TX
2004-02-17 715-431 1XXX8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 GRANTSBURG WI
2004-02-17 715-530 3XXX4XXX5XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 INDEPNDNCE WI
2004-02-17 843-287 5XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHERAW SC
2004-02-17 843-289 3XXX4XXX5XXX6XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 MARION SC
2004-02-16 416-554 not yet reported which blocks → TELUS Mobility 8303 Toronto —
2004-02-16 514-554 not yet reported which blocks → TELUS Mobility 8303 Montreal —
2004-02-16 514-799 not yet reported which blocks → TELUS Mobility 8303 Montreal —
2004-02-16 519-618 not yet reported which blocks → TELUS Integrated Communications 2782 Galt —
2004-02-16 778-554 not yet reported which blocks → TELUS Mobility 8301 Vancouver —
2004-02-16 902-404 not yet reported which blocks → Bragg Communications Inc. 4878 Halifax —
2004-02-13 218-961 not yet reported which blocks → CONSOLIDATED TELEPHONE COMPANY - MN 925C NISSWA MN
2004-02-13 704-260 0–9 XXXwhole prefix which blocks → WINDSTREAM CONCORD TELEPHONE, LLC 0474 CONCORD NC
2004-02-13 706-288 0–9 XXXall 10 · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 AUGUSTA GA
2004-02-13 732-601 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F DUNELLEN NJ
2004-02-13 804-200 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 RICHMOND VA
2004-02-13 859-406 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2004-02-13 864-852 not yet reported which blocks → WEST CAROLINA COMMUNICATIONS, LLC - SC 5872 MCCORMICK SC
2004-02-12 203-504 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J STAMFORD CT
2004-02-12 203-706 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J WATERBURY CT
2004-02-12 250-858 not yet reported which blocks → Bell Mobility 6574 Victoria —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.