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
Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2011-07-05 647-740 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Toronto —
2011-07-05 647-741 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Toronto —
2011-07-05 647-760 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Toronto —
2011-07-05 647-761 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Toronto —
2011-07-05 706-520 not yet reported which blocks → WINDSTREAM GEORGIA, INC. 0357 COMMERCE GA
2011-07-05 706-703 0–9 XXXall 10 · 7 holders which blocks → METROPCS, INC. 5562 THOMSON GA
2011-07-05 828-513 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HENDERSNVL NC
2011-07-05 856-434 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 MULLICA HL NJ
2011-07-05 865-282 0–9 XXXall 10 · 3 holders which blocks → POWERTEL NASHVILLE LICENSES, INC. 7476 KNOXVILLE TN
2011-07-05 907-414 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 WASILLA AK
2011-07-05 940-333 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 CHILDRESS TX
2011-07-01 210-749 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2011-07-01 323-435 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2011-07-01 406-309 0–9 XXXall 10 · 6 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K KALISPELL MT
2011-07-01 406-616 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - MT 453F THREEFORKS MT
2011-07-01 469-343 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCKINNEY TX
2011-07-01 480-541 0–9 XXXwhole prefix which blocks → QWEST CORPORATION 9636 PHOENIX AZ
2011-07-01 512-815 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2011-07-01 682-232 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ARLINGTON TX
2011-07-01 702-749 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J LAS VEGAS NV
2011-07-01 850-743 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 QUINCY FL
2011-07-01 872-244 0–9 XXXall 10 · 6 holders which blocks → AT&T ENTERPRISES, LLC 516C CHICGOZN07 IL
2011-07-01 872-395 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2011-07-01 952-977 0–9 XXXall 10 · 4 holders which blocks → QWEST CORPORATION 9631 TWINCITIES MN
2011-06-30 201-492 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J JERSEYCITY NJ
2011-06-30 386-339 0–9 XXXall 10 · 4 holders which blocks → WINDSTREAM FLORIDA, INC. 0336 LIVE OAK FL
2011-06-30 443-894 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2011-06-30 443-913 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2011-06-30 579-720 not yet reported which blocks → Videotron Ltd. 8306 St-Lambert —
2011-06-30 587-254 not yet reported which blocks → TELUS 8084 Airdrie —
2011-06-30 615-455 0–9 XXXall 10 · 4 holders which blocks → AT&T ENTERPRISES, LLC 516C SCUNNINGHA TN
2011-06-30 681-238 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 BECKLEY WV
2011-06-30 708-759 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-06-30 720-354 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 TELECOM OF COLORADO, LLC - CO 4574 DENVER CO
2011-06-30 819-500 not yet reported which blocks → Videotron Ltd. 328F Gatineau —
2011-06-30 856-352 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J BLACKWOOD NJ
2011-06-30 856-516 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J WILLIAMSTN NJ
2011-06-30 856-839 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J VINELAND NJ
2011-06-30 872-484 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2011-06-29 205-440 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 BIRMINGHAM AL
2011-06-29 216-882 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2011-06-29 240-585 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WALDORF MD
2011-06-29 323-426 0–9 XXXall 10 · 4 holders which blocks → METROPCS NETWORKS, LLC 899D LSAN DA 02 CA
2011-06-29 407-960 0–9 XXXall 10 · 2 holders which blocks → BHN IP ENABLED SERVICES, LLC 045L WINTERPARK FL
2011-06-29 424-276 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E W ANGELES CA
2011-06-29 442-242 0–9 XXXall 10 · 5 holders which blocks → METROPCS NETWORKS, LLC 899D VICTORVL CA
2011-06-29 443-908 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2011-06-29 506-390 not yet reported which blocks → Bell Mobility Aliant 329A St. Leonard —
2011-06-29 581-987 not yet reported which blocks → Videotron Ltd. 328F Baie-Comeau (Hauterive) —
2011-06-29 647-467 not yet reported which blocks → TELUS Mobility 8303 Toronto —

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.