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
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Quick find in this area code:
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 424-465 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E W ANGELES CA
— 424-476 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C REDONDO CA
— 424-488 0–9 XXXall 10 · 8 holders which blocks → ONVOY, LLC - CA 649C TORRANCE CA
— 424-500 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C SNMN MRVS CA
— 424-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 424-529 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C CMTN CMTN CA
— 424-542 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F BEVERLYHLS CA
— 424-543 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CULVERCITY CA
— 424-551 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C CMTN GRDN CA
— 424-552 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C SAN PEDRO CA
— 424-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST CA
— 424-567 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C HAWTHORNE CA
— 424-600 0–9 XXXwhole prefix which blocks → ONVOY, LLC - CA 649C BEVERLYHLS CA
— 424-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 424-652 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 W ANGELES CA
— 424-666 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
— 424-672 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - CA 649C CULVERCITY CA
— 424-700 not yet reported which blocks → CA
— 424-702 0–9 XXXall 10 · 4 holders which blocks → METROPCS NETWORKS, LLC 899D INGLEWOOD CA
— 424-707 not yet reported which blocks → CA
— 424-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 424-732 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C INGLEWOOD CA
— 424-757 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E TORRANCE CA
— 424-772 0–9 XXXall 10 · 7 holders which blocks → COMCAST PHONE OF CALIFORNIA, LLC 394L SAN PEDRO CA
— 424-777 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
— 424-800 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C INGLEWOOD CA
— 424-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 424-888 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C INGLEWOOD CA
— 424-900 0–9 XXXwhole prefix which blocks → ONVOY, LLC - CA 649C W ANGELES CA
— 424-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 424-950 not yet reported which blocks → CA
— 424-958 not yet reported which blocks → CA
— 424-959 not yet reported which blocks → CA
— 424-976 not yet reported which blocks → CA
— 424-999 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C TORRANCE CA
— 425-201 not yet reported which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BELLEVUE WA
— 425-202 4XXX5XXX6XXX7XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 KIRKLAND WA
— 425-203 not yet reported which blocks → QWEST CORPORATION 9638 RENTON WA
— 425-204 not yet reported which blocks → QWEST CORPORATION 9638 RENTON WA
— 425-205 0XXX1XXX3XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 BOTHELL WA
— 425-206 not yet reported which blocks → WA
— 425-207 3XXX4XXX5XXX6XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J RENTON WA
— 425-208 1XXX2XXX5XXX6XXX9XXX which blocks → QWEST CORPORATION 9638 BELLEVUE WA
— 425-210 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 EVERETT WA
— 425-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX WA
— 425-212 0XXX1XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 EVERETT WA
— 425-213 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 BELLEVUE WA
— 425-214 1XXX2XXX3XXX4XXX6XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J BELLEVUE WA
— 425-216 3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA 7274 KIRKLAND WA
— 425-217 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BOTHELL WA

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.