NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

349 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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
Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2012-08-28 440-501 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 VICTORY OH
2012-08-28 587-716 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Calgary —
2012-08-28 613-712 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Ottawa-Hull —
2012-08-28 614-913 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HILLIARD OH
2012-08-28 646-790 0–9 XXXall 10 · 2 holders which blocks → PAETEC ITEL, LLC 829J NWYRCYZN01 NY
2012-08-28 647-660 not yet reported which blocks → Comwave Networks 160G Toronto —
2012-08-28 661-437 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 BKFD MAIN CA
2012-08-28 760-493 0–9 XXXall 10 · 7 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 VICTORVL CA
2012-08-28 951-355 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 PERRIS CA
2012-08-27 207-616 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K WATERVILLE ME
2012-08-27 267-313 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E PENNSBURG PA
2012-08-27 470-221 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF GEORGIA, LLC - GA 909E GRANTVILLE GA
2012-08-27 470-293 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF GEORGIA, LLC - GA 909E JACKSON GA
2012-08-27 470-335 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF GEORGIA, LLC - GA 909E CEDARTOWN GA
2012-08-27 581-384 not yet reported which blocks → Telecommunications Xittel Inc 247F Laterriere —
2012-08-27 581-385 not yet reported which blocks → Telecommunications Xittel Inc 247F St-Ambroise-de-Chicoutimi —
2012-08-27 581-386 not yet reported which blocks → Telecommunications Xittel Inc 247F St-Fulgence —
2012-08-27 581-387 not yet reported which blocks → Telecommunications Xittel Inc 247F Ste-Rose-du-Nord —
2012-08-27 581-388 not yet reported which blocks → Telecommunications Xittel Inc 247F St-Honore (Chicoutimi Co.) —
2012-08-27 581-389 not yet reported which blocks → Telecommunications Xittel Inc 247F La Baie (Chicoutimi Co.) —
2012-08-27 581-390 not yet reported which blocks → Telecommunications Xittel Inc 247F Anse-St-Jean —
2012-08-27 717-617 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LANCASTER PA
2012-08-27 970-305 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 FT COLLINS CO
2012-08-24 276-209 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F BLAND VA
2012-08-24 360-924 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F ABERDEEN WA
2012-08-24 484-709 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 READING PA
2012-08-24 581-382 not yet reported which blocks → Telecommunications Xittel Inc 247F Ferland —
2012-08-24 581-383 not yet reported which blocks → Telecommunications Xittel Inc 247F Jonquiere —
2012-08-24 717-847 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LANCASTER PA
2012-08-24 816-663 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 KANSASCITY MO
2012-08-24 856-400 0XXX1XXX2XXX4XXX5XXX which blocks → PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F PORTNORRIS NJ
2012-08-24 856-407 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX which blocks → PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F PAULSBORO NJ
2012-08-23 207-494 0–9 XXXall 10 · 7 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K BIDDEFORD ME
2012-08-23 267-309 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2012-08-23 267-398 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN1 PA
2012-08-23 267-418 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2012-08-23 267-858 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN1 PA
2012-08-23 315-801 0–9 XXXall 10 · 6 holders which blocks → TC SYSTEMS, INC. - NY 7140 UTICA NY
2012-08-23 317-619 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 INDIANAPLS IN
2012-08-23 475-205 0–9 XXXall 10 · 2 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J STAMFORD CT
2012-08-23 702-803 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV 6458 LAUGHLIN NV
2012-08-23 813-424 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2012-08-23 850-317 0–9 XXXall 10 · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J MARIANNA FL
2012-08-22 204-501 not yet reported which blocks → LES.NET (1996) Inc. 141F Morden —
2012-08-22 204-502 not yet reported which blocks → LES.NET (1996) Inc. 141F Winkler —
2012-08-22 204-503 not yet reported which blocks → LES.NET (1996) Inc. 141F Niverville —
2012-08-22 205-708 0–9 XXXall 10 · 5 holders which blocks → MCC TELEPHONY LLC 593K YORK AL
2012-08-22 240-762 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN2 MD
2012-08-22 249-220 not yet reported which blocks → TELUS Integrated Communications 2782 Stayner —
2012-08-22 249-221 not yet reported which blocks → TELUS Integrated Communications 2782 Alliston —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.