NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
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
Download CSV ↓
Quick find in this area code:
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 425-940 not yet reported which blocks → ONVOY, LLC - WA 483E BELLEVUE WA
— 425-941 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
— 425-944 not yet reported which blocks → ONVOY, LLC - WA 483E BELLEVUE WA
— 425-945 6XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 BELLEVUE WA
— 425-947 2XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KIRKLAND WA
— 425-948 0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SILVERLAKE WA
— 425-949 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BOTHELL WA
— 425-950 not yet reported which blocks → WA
— 425-951 0XXX3XXX8XXX9XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 BOTHELL WA
— 425-952 3XXX4XXX9XXX · 2 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 KIRKLAND WA
— 425-953 0XXX3XXX6XXX7XXX8XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 EVERETT WA
— 425-954 0XXX2XXX3XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 HALLS LAKE WA
— 425-955 not yet reported which blocks → ONVOY, LLC - WA 483E BELLEVUE WA
— 425-956 3XXX4XXX · 2 holders which blocks → ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 BELLEVUE WA
— 425-957 not yet reported which blocks → QWEST CORPORATION 9638 BELLEVUE WA
— 425-958 not yet reported which blocks → WA
— 425-959 not yet reported which blocks → WA
— 425-962 not yet reported which blocks → ONVOY, LLC - WA 483E BELLEVUE WA
— 425-963 not yet reported which blocks → ONVOY, LLC - WA 483E BELLEVUE WA
— 425-965 none assigned yet which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 RENTON WA
— 425-968 2XXX3XXX5XXX8XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA 7274 KIRKLAND WA
— 425-969 not yet reported which blocks → ONVOY, LLC - WA 483E BELLEVUE WA
— 425-970 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 RENTON WA
— 425-971 2XXX which blocks → T-MOBILE USA, INC. 6529 EVERETT WA
— 425-973 not yet reported which blocks → QWEST CORPORATION 9638 BELLEVUE WA
— 425-974 0XXX5XXX9XXX · 2 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 BELLEVUE WA
— 425-976 not yet reported which blocks → WA
— 425-977 3XXX4XXX5XXX6XXX9XXX · 2 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 HALLS LAKE WA
— 425-984 3XXX4XXX5XXX9XXX · 4 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 BOTHELL WA
— 425-985 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
— 425-988 2XXX3XXX4XXX5XXX9XXX · 4 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 RENTON WA
— 425-990 not yet reported which blocks → QWEST CORPORATION 9638 BELLEVUE WA
— 425-996 1XXX2XXX5XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 ISSAQUAH WA
— 425-998 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - WA 483E BELLEVUE WA
— 425-999 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BELLEVUE WA
— 430-201 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C LONGVIEW TX
— 430-207 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MABANK TX
— 430-209 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C DEPORT TX
— 430-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
— 430-249 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - TX 903C MTPLEASANT TX
— 430-273 0XXX1XXX2XXX3XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J OAKLAND TX
— 430-301 not yet reported which blocks → SOUTHWESTERN BELL 9533 XXXXXXXXXX TX
— 430-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
— 430-340 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F CANTON TX
— 430-342 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ATLANTA TX
— 430-343 0XXX1XXX2XXX4XXX5XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - TX 903C CELESTE TX
— 430-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
— 430-431 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 8 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F WILLSPOINT TX
— 430-433 0XXX1XXX2XXX4XXX6XXX9XXX · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K COMO TX
— 430-434 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F EMHOUSE TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.