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
2011-07-21 613-410 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Ottawa-Hull —
2011-07-21 613-415 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Ottawa-Hull —
2011-07-21 613-607 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Ottawa-Hull —
2011-07-21 613-615 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Ottawa-Hull —
2011-07-21 613-716 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Ottawa-Hull —
2011-07-21 613-910 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Ottawa-Hull —
2011-07-21 779-233 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 JOLIET IL
2011-07-21 786-527 0–9 XXXall 10 · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 MIAMI FL
2011-07-21 902-700 not yet reported which blocks → Iristel Inc. 154E Halifax —
2011-07-21 902-801 not yet reported which blocks → Iristel Inc. 154E Halifax —
2011-07-21 978-427 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 LOWELL MA
2011-07-20 204-515 not yet reported which blocks → Distributel 081E Winnipeg —
2011-07-20 216-927 0XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 MONTRSE OH
2011-07-20 424-281 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2011-07-20 438-986 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2011-07-20 438-987 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2011-07-20 438-988 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2011-07-20 438-989 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2011-07-20 438-990 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2011-07-20 438-991 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2011-07-20 438-992 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2011-07-20 438-993 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2011-07-20 438-994 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2011-07-20 470-422 0–9 XXXall 10 · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 ATLANTA NE GA
2011-07-20 587-781 not yet reported which blocks → Distributel 081E Edmonton —
2011-07-20 587-782 not yet reported which blocks → Distributel 081E Edmonton —
2011-07-20 603-243 0XXX1XXX6XXX · 3 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K WOODSVILLE NH
2011-07-20 682-238 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ARLINGTON TX
2011-07-20 786-296 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E MIAMI FL
2011-07-20 915-244 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 EL PASO TX
2011-07-20 915-245 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 EL PASO TX
2011-07-20 956-786 0–9 XXXall 10 · 2 holders which blocks → SOUTHWESTERN BELL 9533 LAREDO TX
2011-07-19 202-699 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC 6402 WSHNGTNZN1 DC
2011-07-19 224-242 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ELGIN IL
2011-07-19 252-621 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ELIZABTHCY NC
2011-07-19 309-206 0–9 XXXall 10 · 5 holders which blocks → ILLINOIS BELL TEL CO 9329 ROCKISLAND IL
2011-07-19 321-236 0–9 XXXall 10 · 2 holders which blocks → AT&T ENTERPRISES, LLC 516C ORLANDO FL
2011-07-19 336-739 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E SAXAPAHAW NC
2011-07-19 651-272 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2011-07-19 708-530 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-07-19 813-529 0–9 XXXwhole prefix which blocks → LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 TAMPACEN FL
2011-07-19 845-262 0–9 XXXall 10 · 7 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 SPRING VLY NY
2011-07-19 872-226 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2011-07-19 909-296 0–9 XXXall 10 · 8 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 UPLAND CA
2011-07-19 914-226 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 WSCHSTZN01 NY
2011-07-19 919-925 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E FRANKLINTN NC
2011-07-19 925-334 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CONCORD CA
2011-07-19 939-500 0–9 XXXall 10 · 5 holders which blocks → PUERTO RICO TEL. CO. 3201 PONCE PR
2011-07-19 939-535 0–9 XXXall 10 · 3 holders which blocks → PUERTO RICO TEL. CO. 3201 SANTURCE PR
2011-07-19 980-533 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E BESSEMERCY NC

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.