NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 21
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
— 325-972 not yet reported which blocks → TX
— 325-976 not yet reported which blocks → TX
— 325-979 not yet reported which blocks → TX
— 325-985 not yet reported which blocks → CENTRAL TEXAS TEL. COOP., INC. 2052 MULLIN TX
— 325-988 not yet reported which blocks → TX
— 325-993 not yet reported which blocks → ALENCO COMMUNICATIONS, INC. 2090 SYLVESTER TX
— 326-203 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H DAYTON OH
— 326-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 326-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 326-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 326-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 326-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST OH
— 326-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 326-700 not yet reported which blocks → OH
— 326-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 326-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 326-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 326-950 not yet reported which blocks → OH
— 326-958 not yet reported which blocks → OH
— 326-959 not yet reported which blocks → OH
— 326-976 not yet reported which blocks → OH
— 327-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AR
— 327-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AR
— 327-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AR
— 327-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AR
— 327-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST AR
— 327-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AR
— 327-700 not yet reported which blocks → AR
— 327-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AR
— 327-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AR
— 327-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AR
— 327-950 not yet reported which blocks → AR
— 327-958 not yet reported which blocks → AR
— 327-959 not yet reported which blocks → AR
— 327-976 not yet reported which blocks → AR
— 329-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 329-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 329-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 329-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 329-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST NY
— 329-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 329-700 not yet reported which blocks → NY
— 329-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 329-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 329-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 329-950 not yet reported which blocks → NY
— 329-958 not yet reported which blocks → NY
— 329-959 not yet reported which blocks → NY
— 329-976 not yet reported which blocks → NY
— 330-201 8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WOOSTER OH

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.