NumberResearch Membership · Data 09/23/2026

Recent prefix assignments

357 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/23/2026

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 27
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
2011-09-15 682-212 0–9 XXXwhole prefix which blocks → SOUTHWESTERN BELL TELEPHONE COMPANY - TX 7726 KELLER TX
2011-09-15 808-492 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - HI 6516 HONOLULU HI
2011-09-15 864-305 0–9 XXXall 10 · 4 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 ANDERSON SC
2011-09-15 913-213 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KANSASCITY KS
2011-09-15 919-437 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 KENLY NC
2011-09-14 209-407 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - CA 649C TRACY CA
2011-09-14 305-330 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E KEYS FL
2011-09-14 404-804 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2011-09-14 405-482 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 OKLA CITY OK
2011-09-14 406-813 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BELGRADE MT
2011-09-14 470-226 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA NE GA
2011-09-14 478-353 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 DUBLIN GA
2011-09-14 604-262 not yet reported which blocks → Iristel Inc. 154E Vancouver —
2011-09-14 613-702 not yet reported which blocks → Iristel Inc. 154E Ottawa-Hull —
2011-09-14 647-362 not yet reported which blocks → Iristel Inc. 154E Toronto —
2011-09-14 813-324 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 TAMPAEST FL
2011-09-14 902-701 not yet reported which blocks → Iristel Inc. 154E Halifax —
2011-09-14 918-210 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 TULSA OK
2011-09-14 980-278 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WADESBORO NC
2011-09-14 980-404 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 SHELBY NC
2011-09-13 201-273 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 JERSEYCITY NJ
2011-09-13 208-957 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 BOISE ID
2011-09-13 210-305 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SANANTONIO TX
2011-09-13 224-254 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2011-09-13 256-284 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - AL 072F FLORENCE AL
2011-09-13 289-698 not yet reported which blocks → TELUS Mobility 8303 Hamilton —
2011-09-13 312-273 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2011-09-13 331-256 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 AURORA IL
2011-09-13 336-904 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 KERNERSVL NC
2011-09-13 408-620 0–9 XXXall 10 · 8 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 SNJS SOUTH CA
2011-09-13 424-280 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNMN SNMN CA
2011-09-13 450-408 not yet reported which blocks → Telecommunications Xittel Inc 247F St-Damase —
2011-09-13 450-410 not yet reported which blocks → Telecommunications Xittel Inc 247F St-Hugues —
2011-09-13 450-418 not yet reported which blocks → Telecommunications Xittel Inc 247F St-Hyacinthe —
2011-09-13 450-423 not yet reported which blocks → Telecommunications Xittel Inc 247F St-Jude —
2011-09-13 450-425 not yet reported which blocks → Telecommunications Xittel Inc 247F St-Pie —
2011-09-13 450-426 not yet reported which blocks → Telecommunications Xittel Inc 247F St-Simon —
2011-09-13 450-440 not yet reported which blocks → Telecommunications Xittel Inc 247F St-Thomas-d'Aquin —
2011-09-13 450-480 not yet reported which blocks → Telecommunications Xittel Inc 247F Ste-Helene-de-Bagot —
2011-09-13 450-496 not yet reported which blocks → Telecommunications Xittel Inc 247F Ste-Madeleine —
2011-09-13 513-882 0–9 XXXall 10 · 4 holders which blocks → CITYNET OHIO, LLC - OH 036B CINCINNATI OH
2011-09-13 516-418 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2011-09-13 581-245 not yet reported which blocks → Telecommunications Xittel Inc 247F Sacre-Coeur —
2011-09-13 581-255 not yet reported which blocks → Telecommunications Xittel Inc 247F Sault-au-Mouton —
2011-09-13 581-256 not yet reported which blocks → Telecommunications Xittel Inc 247F St-Fidele —
2011-09-13 581-257 not yet reported which blocks → Telecommunications Xittel Inc 247F St-Hilarion —
2011-09-13 581-258 not yet reported which blocks → Telecommunications Xittel Inc 247F St-Irenee —
2011-09-13 581-259 not yet reported which blocks → Telecommunications Xittel Inc 247F St-Urbain —
2011-09-13 581-260 not yet reported which blocks → Telecommunications Xittel Inc 247F Ste-Anne-de-Portneuf —
2011-09-13 581-263 not yet reported which blocks → Telecommunications Xittel Inc 247F Tadoussac —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.