NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

341 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 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
Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2021-03-16 352-709 0–9 XXXall 10 · 2 holders which blocks → STRATUS NETWORKS 495J GAINESVL FL
2021-03-16 367-440 not yet reported which blocks → TELUS Quebec 8083 Saint-Jean-Port-Joli —
2021-03-16 367-441 not yet reported which blocks → TELUS Quebec 8083 Saint-Pamphile —
2021-03-16 367-442 not yet reported which blocks → TELUS Quebec 8083 Bic —
2021-03-16 367-443 not yet reported which blocks → TELUS Quebec 8083 Luceville —
2021-03-16 367-444 not yet reported which blocks → TELUS Quebec 8083 Mont-Joli —
2021-03-16 367-445 not yet reported which blocks → TELUS Quebec 8083 Saint-Prosper-de-Dorchester —
2021-03-16 367-446 not yet reported which blocks → TELUS Quebec 8083 Sainte-Claire —
2021-03-16 367-447 not yet reported which blocks → TELUS Quebec 8083 Saint-Flavien —
2021-03-16 367-448 not yet reported which blocks → TELUS Quebec 8083 Havre-Saint-Pierre —
2021-03-16 367-449 not yet reported which blocks → TELUS Quebec 8083 Port-Cartier —
2021-03-16 425-866 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BELLEVUE WA
2021-03-16 501-452 0–9 XXXall 10 · 8 holders which blocks → STRATUS NETWORKS 495J MORRILTON AR
2021-03-16 551-837 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HACKENSACK NJ
2021-03-16 573-801 0–9 XXXall 10 · 3 holders which blocks → STRATUS NETWORKS 495J COLUMBIA MO
2021-03-16 614-647 0–9 XXXall 10 · 4 holders which blocks → STRATUS NETWORKS 495J NEW ALBANY OH
2021-03-16 689-229 0–9 XXXall 10 · 4 holders which blocks → STRATUS NETWORKS 495J WINTERPARK FL
2021-03-16 786-764 0–9 XXXall 10 · 2 holders which blocks → STRATUS NETWORKS 495J MIAMI FL
2021-03-16 839-766 1XXX3XXX4XXX6XXX7XXX · 4 holders which blocks → FRACTEL, LLC 965H GREATFALLS SC
2021-03-16 858-466 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H LA MESA CA
2021-03-16 858-786 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H NATIONALCY CA
2021-03-16 931-343 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CLARKSVL TN
2021-03-16 959-465 0–9 XXXall 10 · 8 holders which blocks → FRACTEL, LLC 965H WATERTOWN CT
2021-03-16 959-758 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H PLAINFIELD CT
2021-03-15 240-822 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - MD 876D NEW MARKET MD
2021-03-15 240-824 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - MD 876D FROSTBURG MD
2021-03-15 240-834 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - MD 876D KITZMILLER MD
2021-03-15 240-942 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - MD 876D BITTINGER MD
2021-03-15 240-944 0XXX1XXX2XXX3XXX5XXX6XXX8XXX · 3 holders which blocks → ONVOY, LLC - MD 876D WESTERNPT MD
2021-03-15 308-403 0–9 XXXall 10 · 2 holders which blocks → TELNYX LLC 073H GRAND IS NE
2021-03-15 343-928 not yet reported which blocks → Westport Telephone Company Limited 920D Delta —
2021-03-15 385-524 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J KAYSVILLE UT
2021-03-15 431-392 not yet reported which blocks → Bell Mobility 6574 Winnipeg —
2021-03-15 437-513 not yet reported which blocks → Bell Mobility 6574 Toronto —
2021-03-15 438-591 not yet reported which blocks → Bell Mobility 6574 Montreal —
2021-03-15 825-433 not yet reported which blocks → Bell Mobility 6574 Calgary —
2021-03-15 928-975 0–9 XXXall 10 · 5 holders which blocks → STRATUS NETWORKS 495J YUMA AZ
2021-03-12 202-983 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H WSHNGTNZN1 DC
2021-03-12 308-354 0XXX1XXX3XXX · 2 holders which blocks → ONVOY, LLC - NE 549E LEWELLEN NE
2021-03-12 308-401 0XXX1XXX3XXX4XXX8XXX · 2 holders which blocks → ONVOY, LLC - NE 549E LYMAN NE
2021-03-12 314-949 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - MO 093F LADUE MO
2021-03-12 505-461 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NM 123F WHITE ROCK NM
2021-03-12 531-260 0XXX2XXX3XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEHAWKA NE
2021-03-12 531-261 0XXX1XXX2XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WEEPINGWTR NE
2021-03-12 573-781 0XXX1XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - MO 093F CLIMAX SPG MO
2021-03-12 573-831 0XXX3XXX · 2 holders which blocks → ONVOY, LLC - MO 093F CALEDONIA MO
2021-03-12 573-867 0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - MO 093F ELSBERRY MO
2021-03-12 573-913 0XXX1XXX5XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - MO 093F BLOOMSDALE MO
2021-03-12 573-936 0XXX1XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - MO 093F MEXICO MO
2021-03-12 573-956 0XXX1XXX5XXX8XXX · 3 holders which blocks → ONVOY, LLC - MO 093F MONTGORYCY MO

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.