Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

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, all time — NPA 363
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
2026-07-28 363-225 0XXX1XXX2XXX3XXX4XXX8XXX · 2 holders which blocks → ONVOY, LLC- NY 384C NASSAUZN05 NY
2026-07-28 363-226 0XXX1XXX which blocks → ONVOY, LLC- NY 384C NASSAUZN09 NY
2026-05-07 363-224 0XXX1XXX which blocks → ONVOY, LLC- NY 384C NASSAUZN03 NY
2026-05-05 363-223 0XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN07 NY
2026-04-14 363-221 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2026-03-19 363-220 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN05 NY
2026-03-10 363-219 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN07 NY
2026-01-07 363-218 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2025-12-24 363-529 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H NASSAUZN02 NY
2025-12-24 363-800 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H NASSAUZN07 NY
2025-12-24 363-900 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H NASSAUZN08 NY
2025-09-25 363-217 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX which blocks → ONVOY, LLC- NY 384C NASSAUZN06 NY
2025-09-24 363-216 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN02 NY
2025-09-04 363-215 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2025-09-03 363-214 not yet reported which blocks → SHELCOMM 0051 NASSAUZN01 NY
2025-03-19 363-213 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC- NY 384C NASSAUZN01 NY
2025-02-06 363-212 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC- NY 384C NASSAUZN09 NY
2025-01-10 363-867 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN02 NY
2025-01-09 363-210 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC- NY 384C NASSAUZN02 NY
2024-11-12 363-208 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN05 NY
2024-11-12 363-209 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN07 NY
2024-11-12 363-666 0–9 XXXall 10 · 4 holders which blocks → YORKSTREAM COMMUNICATIONS LLC 977K NASSAUZN09 NY
2024-10-24 363-300 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → YORKSTREAM COMMUNICATIONS LLC 977K NASSAUZN04 NY
2024-10-18 363-207 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC- NY 384C NASSAUZN02 NY
2024-10-10 363-206 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC- NY 384C NASSAUZN08 NY
2024-10-04 363-205 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN05 NY
2024-09-20 363-204 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN03 NY
2024-09-09 363-203 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN06 NY
2024-04-19 363-202 0–9 XXXwhole prefix which blocks → CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN07 NY
2024-01-29 363-201 0–9 XXXall 10 · 4 holders which blocks → COMMIO, LLC 939H NASSAUZN04 NY
2024-01-16 363-200 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NASSAUZN08 NY
2023-12-20 363-222 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H COLDSPGHBR NY
2023-12-20 363-999 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC- NY 384C NASSAUZN03 NY
2023-12-19 363-363 0–9 XXXwhole prefix which blocks → EXIANT COMMUNICATIONS LLC 114J NASSAUZN02 NY
2023-12-19 363-444 0XXX4XXX8XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E FARMINGDL NY
2023-12-19 363-777 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC- NY 384C NASSAUZN01 NY
2023-12-15 363-333 0–9 XXXall 10 · 3 holders which blocks → WIDE VOICE, LLC - NY 705G NASSAUZN05 NY
2023-12-15 363-888 0–9 XXXall 10 · 5 holders which blocks → WIDE VOICE, LLC - NY 705G NASSAUZN07 NY
— 363-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 363-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 363-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 363-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 363-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST NY
— 363-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 363-700 not yet reported which blocks → NY
— 363-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 363-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 363-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 363-950 not yet reported which blocks → NY
— 363-958 not yet reported which blocks → NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.