NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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 28
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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
2019-01-31 314-820 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 LADUE MO
2019-01-31 347-970 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC- NY 384C NWYRCYZN10 NY
2019-01-31 385-301 0–9 XXXall 10 · 7 holders which blocks → METROPCS, INC. 5562 SALT LAKE UT
2019-01-31 424-420 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 INGLEWOOD CA
2019-01-31 425-515 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 BELLEVUE WA
2019-01-31 509-408 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - WA 006F LIBERTY LK WA
2019-01-31 660-600 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H SEDALIA MO
2019-01-31 718-970 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC- NY 384C NWYRCYZN12 NY
2019-01-31 747-287 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 RESEDA CA
2019-01-31 747-290 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-31 747-312 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-31 773-692 0–9 XXXwhole prefix which blocks → ONVOY, LLC 224C CHICGOZN04 IL
2019-01-31 816-441 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MO 6123 BELTON MO
2019-01-31 901-677 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H MEMPHIS TN
2019-01-31 910-902 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H WILMINGTON NC
2019-01-31 929-507 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN08 NY
2019-01-30 240-659 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2019-01-30 240-663 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MIDDLETOWN MD
2019-01-30 249-424 not yet reported which blocks → ExaTEL Inc. 3147 Alliston —
2019-01-30 302-487 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 DOVER DE
2019-01-30 312-776 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2019-01-30 380-799 0–9 XXXall 10 · 3 holders which blocks → HD CARRIER LLC 321J COLUMBUS OH
2019-01-30 458-239 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 EUGENE OR
2019-01-30 609-749 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ 7134 FORT DIX NJ
2019-01-30 617-655 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - MA 892D BOSTON MA
2019-01-30 629-217 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F SMYRNA TN
2019-01-30 669-260 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNJS NORTH CA
2019-01-30 681-799 0–9 XXXall 10 · 2 holders which blocks → HD CARRIER LLC 321J CHRLSTNZN1 WV
2019-01-30 816-534 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 KANSASCITY MO
2019-01-30 986-666 0–9 XXXall 10 · 8 holders which blocks → FRACTEL, LLC 965H NAMPA ID
2019-01-30 986-777 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H EMMETT ID
2019-01-30 986-999 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H BOISE ID
2019-01-29 253-393 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 TACOMA WA
2019-01-29 406-500 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H BILLINGS MT
2019-01-29 470-567 0–9 XXXwhole prefix which blocks → ONVOY, LLC - GA 067D ATLANTA NE GA
2019-01-29 470-704 0–9 XXXwhole prefix which blocks → ONVOY, LLC - GA 067D ATLANTA GA
2019-01-29 516-604 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NASSAUZN09 NY
2019-01-29 754-799 0–9 XXXall 10 · 5 holders which blocks → INVOXIO INCORPORATED 158H HOLLYWOOD FL
2019-01-29 772-400 0–9 XXXall 10 · 4 holders which blocks → INVOXIO INCORPORATED 158H VERO BEACH FL
2019-01-29 782-776 not yet reported which blocks → TELUS Mobility 8303 Shelburne —
2019-01-29 786-652 0–9 XXXall 10 · 3 holders which blocks → INVOXIO INCORPORATED 158H KEYS FL
2019-01-28 223-666 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H HARISBGZN1 PA
2019-01-28 236-468 not yet reported which blocks → TELUS 8086 Haney —
2019-01-28 236-971 not yet reported which blocks → TELUS Mobility 8301 Vancouver —
2019-01-28 319-666 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H CEDARFALLS IA
2019-01-28 437-685 not yet reported which blocks → TELUS Mobility 8303 Toronto —
2019-01-28 445-900 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H PHPHSBZN40 PA
2019-01-28 531-666 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H FREMONT NE
2019-01-28 531-800 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H OMAHA NE
2019-01-28 551-303 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 CLOSTER NJ

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.