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
2012-12-24 470-333 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - GA 067D SOCIALCRCL GA
2012-12-24 470-444 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - GA 067D COVINGTON GA
2012-12-24 470-777 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D ZEBULON GA
2012-12-24 470-888 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D CARTERSVL GA
2012-12-24 470-999 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D CEDARTOWN GA
2012-12-24 570-846 0–9 XXXall 10 · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 WILKSBARRE PA
2012-12-24 571-364 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MANASSAS VA
2012-12-24 579-245 not yet reported which blocks → TELUS Quebec 2243 Saint-Liboire —
2012-12-24 579-246 not yet reported which blocks → TELUS Quebec 2243 Valcourt —
2012-12-24 579-247 not yet reported which blocks → TELUS Quebec 2243 Roxton Falls —
2012-12-24 587-291 not yet reported which blocks → TELUS 8084 Calgary —
2012-12-24 587-757 not yet reported which blocks → TELUS 8084 Okotoks —
2012-12-24 651-666 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2012-12-24 707-389 0–9 XXXall 10 · 7 holders which blocks → T-MOBILE USA, INC. 6529 FRFLD-SUIS CA
2012-12-24 902-395 not yet reported which blocks → Aliant Telecom (NS) 8089 Yarmouth —
2012-12-24 902-408 not yet reported which blocks → Aliant Telecom (NS) 8089 Sydney —
2012-12-24 902-415 not yet reported which blocks → Aliant Telecom (NS) 8089 Halifax —
2012-12-24 902-419 not yet reported which blocks → Aliant Telecom (NS) 8089 New Glasgow —
2012-12-24 915-216 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 EL PASO TX
2012-12-21 234-301 0–9 XXXall 10 · 6 holders which blocks → HORIZON SERVICES, INC. - OH 601G MILLERSBG OH
2012-12-21 289-384 not yet reported which blocks → Fibernetics Corporation 464D Malton —
2012-12-21 289-386 not yet reported which blocks → Bell Canada 8051 Oakville —
2012-12-21 562-202 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K NORWALK CA
2012-12-21 647-846 not yet reported which blocks → Fibernetics Corporation 464D Toronto —
2012-12-21 740-830 0–9 XXXall 10 · 5 holders which blocks → HORIZON SERVICES, INC. - OH 601G MT VERNON OH
2012-12-21 740-870 0–9 XXXall 10 · 6 holders which blocks → HORIZON SERVICES, INC. - OH 601G LANCASTER OH
2012-12-21 872-999 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC 224C CHICGOZN02 IL
2012-12-20 204-441 not yet reported which blocks → TELUS Mobility 8303 Brandon —
2012-12-20 206-489 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 SEATTLE WA
2012-12-20 208-800 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - ID 689F NAMPA ID
2012-12-20 262-336 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 WAUKESHA WI
2012-12-20 438-448 not yet reported which blocks → Fibernetics Corporation 464D Montreal —
2012-12-20 469-434 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 ROCKWALL TX
2012-12-20 470-299 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J ATLANTA NE GA
2012-12-20 475-204 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 DANBURY CT
2012-12-20 475-422 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 BRIDGEPORT CT
2012-12-20 616-216 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ADA MI
2012-12-20 708-631 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J BLUEISLAND IL
2012-12-20 717-317 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HARISBGZN1 PA
2012-12-20 720-600 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CO 026D LONGMONT CO
2012-12-20 778-807 not yet reported which blocks → Fibernetics Corporation 464D Vancouver —
2012-12-20 819-559 not yet reported which blocks → Videotron Ltd. 8306 Warwick —
2012-12-20 819-624 not yet reported which blocks → TELUS Quebec 2243 Ottawa-Hull —
2012-12-20 819-645 not yet reported which blocks → Videotron Ltd. 8306 Kingsey-Falls —
2012-12-20 912-348 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J POOLER GA
2012-12-19 267-279 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2012-12-19 267-358 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2012-12-19 267-453 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2012-12-19 267-530 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2012-12-19 267-658 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA

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.