NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
2013-01-15 602-849 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 PHOENIX AZ
2013-01-15 615-906 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 NASHVILLE TN
2013-01-15 646-601 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J NWYRCYZN01 NY
2013-01-15 651-410 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 RED WING MN
2013-01-15 701-236 0XXX which blocks → MIDCONTINENT COMMUNICATIONS - ND 3065 FESSENDEN ND
2013-01-15 701-287 0XXX which blocks → MIDCONTINENT COMMUNICATIONS - ND 3065 DRAKE ND
2013-01-15 702-337 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2013-01-15 832-501 0–9 XXXall 10 · 3 holders which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 MONTBLVIEU TX
2013-01-15 917-794 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN10 NY
2013-01-15 917-818 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN06 NY
2013-01-14 234-333 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MANCHESTR OH
2013-01-14 234-904 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MANCHESTR OH
2013-01-14 310-905 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNMN MRVS CA
2013-01-14 323-453 0–9 XXXall 10 · 2 holders which blocks → METROPCS NETWORKS, LLC 899D MONTEBELLO CA
2013-01-14 562-332 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WHITTIER CA
2013-01-14 661-426 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - CA 649C BKFD MAIN CA
2013-01-14 707-296 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 EUREKA CA
2013-01-14 760-507 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - CA 649C PALM SPG CA
2013-01-14 832-907 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2013-01-14 909-315 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHINO CA
2013-01-14 949-392 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CAPITRNVLY CA
2013-01-14 951-319 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MURRIETA CA
2013-01-11 210-773 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-01-11 234-713 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 NO CANTON OH
2013-01-11 234-773 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 NO CANTON OH
2013-01-11 248-296 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2013-01-11 312-631 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J CHICGOZN01 IL
2013-01-11 440-713 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BRECKSVL OH
2013-01-11 480-521 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-01-11 480-599 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-01-11 480-815 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-01-11 520-286 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 TUCSON AZ
2013-01-11 520-345 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 TUCSON AZ
2013-01-11 520-427 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 TUCSON AZ
2013-01-11 586-289 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MT CLEMENS MI
2013-01-11 612-351 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2013-01-11 615-802 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - TN 124F PORTLAND TN
2013-01-11 709-771 not yet reported which blocks → TELUS Mobility 8303 St. John's —
2013-01-11 830-212 0–9 XXXall 10 · 6 holders which blocks → STPCS JOINT VENTURE, LLC 4290 DEL RIO TX
2013-01-11 832-786 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HOUSTON TX
2013-01-11 832-908 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2013-01-11 832-916 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2013-01-10 305-615 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E KEYS FL
2013-01-10 414-585 0–9 XXXall 10 · 3 holders which blocks → WISCONSIN BELL INC 9327 MILWAUKZN1 WI
2013-01-10 614-773 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HILLIARD OH
2013-01-10 614-952 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HILLIARD OH
2013-01-10 651-401 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MN 7783 NORTH BRCH MN
2013-01-10 678-515 0–9 XXXall 10 · 5 holders which blocks → AT&T ENTERPRISES, LLC 516C ATLANTA GA
2013-01-10 786-563 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 NORTH DADE FL
2013-01-10 813-509 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.