NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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 ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 819-955 not yet reported which blocks → Bell Canada 8050 Ottawa-Hull —
— 819-956 not yet reported which blocks → Bell Canada 8050 Ottawa-Hull —
— 819-964 not yet reported which blocks → Bell Canada 8050 Kuujjuaq —
— 819-971 not yet reported which blocks → Bell Canada 8050 Manouane —
— 819-974 not yet reported which blocks → Bell Canada 8050 Obedjiwan —
— 819-977 not yet reported which blocks → Telebec Ltee. 8239 Eastmain —
— 819-978 not yet reported which blocks → Telebec Ltee. 8239 Wemindji —
— 819-983 not yet reported which blocks → Telebec Ltee. 8239 St-Andre-Avellin —
— 819-985 not yet reported which blocks → Bell Canada 8050 Thurso —
— 819-986 not yet reported which blocks → Bell Canada 8050 Buckingham —
— 819-988 not yet reported which blocks → Bell Canada 8050 Puvirnituk —
— 819-994 not yet reported which blocks → Bell Canada 8050 Ottawa-Hull —
— 819-997 not yet reported which blocks → Bell Canada 8050 Ottawa-Hull —
— 820-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 820-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 820-400 0–9 XXXall 10 · 6 holders which blocks → TWILIO INTERNATIONAL, INC. 506J PARKFIELD CA
— 820-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 820-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 820-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST CA
— 820-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 820-700 not yet reported which blocks → CA
— 820-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 820-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 820-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 820-950 not yet reported which blocks → CA
— 820-958 not yet reported which blocks → CA
— 820-959 not yet reported which blocks → CA
— 820-976 not yet reported which blocks → CA
— 821-211 not yet reported which blocks → SC
— 821-311 not yet reported which blocks → SC
— 821-411 not yet reported which blocks → SC
— 821-511 not yet reported which blocks → SC
— 821-555 not yet reported which blocks → SC
— 821-611 not yet reported which blocks → SC
— 821-700 not yet reported which blocks → SC
— 821-711 not yet reported which blocks → SC
— 821-811 not yet reported which blocks → SC
— 821-911 not yet reported which blocks → SC
— 821-950 not yet reported which blocks → SC
— 821-958 not yet reported which blocks → SC
— 821-959 not yet reported which blocks → SC
— 821-976 not yet reported which blocks → SC
— 826-206 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → TELNYX LLC 073H WARRENTON VA
— 826-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX VA
— 826-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX VA
— 826-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX VA
— 826-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX VA
— 826-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST VA
— 826-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX VA
— 826-700 not yet reported which blocks → VA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.