NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

21 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 307
UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 20
ONVOY, LLC - WY 1
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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2021-03-03 307-216-9XXX 9000–9999Assigned STRATUS NETWORKS 495J LUSK WY
2021-03-03 307-461-8XXX 8000–8999Assigned STRATUS NETWORKS 495J SHERIDAN WY
2021-03-01 307-667-6XXX 6000–6999Assigned ONVOY, LLC - WY 450F RAWLINS WY
2021-03-01 307-667-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H RAWLINS WY
2021-02-25 307-239-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DUBOIS WY
2021-02-25 307-239-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DUBOIS WY
2021-02-23 307-388-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA WY-LLC 879G WORLAND WY
2021-02-12 307-342-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 JACKSON WY
2021-02-11 307-368-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 6566 AFTON WY
2021-02-09 307-225-1XXX 1000–1999Assigned AIRUS, INC. - WY 581H LARAMIE WY
2021-02-08 307-445-4XXX 4000–4999Assigned ONVOY, LLC - WY 450F KEMMERER WY
2021-02-08 307-445-5XXX 5000–5999Assigned ONVOY, LLC - WY 450F KEMMERER WY
2021-02-08 307-500-5XXX 5000–5999Assigned ONVOY, LLC - WY 450F BORDER WY
2021-02-08 307-500-6XXX 6000–6999Assigned ONVOY, LLC - WY 450F BORDER WY
2021-02-08 307-556-5XXX 5000–5999Assigned ONVOY, LLC - WY 450F RIVERTON WY
2021-02-08 307-556-6XXX 6000–6999Assigned ONVOY, LLC - WY 450F RIVERTON WY
2021-02-02 307-207-6XXX 6000–6999Assigned ONVOY, LLC - WY 450F LAKE WY
2021-02-02 307-218-4XXX 4000–4999Assigned ONVOY, LLC - WY 450F SHERIDAN WY
2021-02-02 307-218-5XXX 5000–5999Assigned ONVOY, LLC - WY 450F SHERIDAN WY
2021-02-02 307-225-5XXX 5000–5999Assigned ONVOY, LLC - WY 450F LARAMIE WY
2021-02-02 307-225-6XXX 6000–6999Assigned ONVOY, LLC - WY 450F LARAMIE WY
2021-02-02 307-225-7XXX 7000–7999Assigned ONVOY, LLC - WY 450F LARAMIE WY
2021-02-02 307-226-6XXX 6000–6999Assigned ONVOY, LLC - WY 450F AFTON WY
2021-02-02 307-227-5XXX 5000–5999Assigned ONVOY, LLC - WY 450F MAMMOTH WY
2021-02-02 307-288-6XXX 6000–6999Assigned ONVOY, LLC - WY 450F EVANSTON WY
2021-02-02 307-303-4XXX 4000–4999Assigned ONVOY, LLC - WY 450F GREENRIVER WY
2021-02-02 307-303-5XXX 5000–5999Assigned ONVOY, LLC - WY 450F GREENRIVER WY
2021-02-02 307-309-6XXX 6000–6999Assigned ONVOY, LLC - WY 450F GLENROCK WY
2021-02-02 307-313-6XXX 6000–6999Assigned ONVOY, LLC - WY 450F EVANSTON WY
2021-02-02 307-318-2XXX 2000–2999Assigned ONVOY, LLC - WY 450F WRIGHT WY
2021-02-02 307-318-3XXX 3000–3999Assigned ONVOY, LLC - WY 450F WRIGHT WY
2021-02-02 307-340-4XXX 4000–4999Assigned ONVOY, LLC - WY 450F LUSK WY
2021-02-02 307-340-5XXX 5000–5999Assigned ONVOY, LLC - WY 450F LUSK WY
2021-02-02 307-342-2XXX 2000–2999Assigned ONVOY, LLC - WY 450F JACKSON WY
2021-02-02 307-342-3XXX 3000–3999Assigned ONVOY, LLC - WY 450F JACKSON WY
2021-02-02 307-342-4XXX 4000–4999Assigned ONVOY, LLC - WY 450F JACKSON WY
2021-02-02 307-372-6XXX 6000–6999Assigned ONVOY, LLC - WY 450F DOUGLAS WY
2021-02-02 307-372-7XXX 7000–7999Assigned ONVOY, LLC - WY 450F DOUGLAS WY
2021-02-02 307-372-8XXX 8000–8999Assigned ONVOY, LLC - WY 450F DOUGLAS WY
2021-02-02 307-400-3XXX 3000–3999Assigned ONVOY, LLC - WY 450F CHEYENNE WY
2021-02-02 307-400-4XXX 4000–4999Assigned ONVOY, LLC - WY 450F CHEYENNE WY
2021-02-02 307-400-5XXX 5000–5999Assigned ONVOY, LLC - WY 450F CHEYENNE WY
2021-02-02 307-400-6XXX 6000–6999Assigned ONVOY, LLC - WY 450F CHEYENNE WY
2021-02-02 307-407-6XXX 6000–6999Assigned ONVOY, LLC - WY 450F WSPEARFISH WY
2021-02-02 307-407-7XXX 7000–7999Assigned ONVOY, LLC - WY 450F WSPEARFISH WY
2021-02-02 307-448-8XXX 8000–8999Assigned ONVOY, LLC - WY 450F ROCK SPG WY
2021-02-02 307-488-5XXX 5000–5999Assigned ONVOY, LLC - WY 450F LANDER WY
2021-02-02 307-488-6XXX 6000–6999Assigned ONVOY, LLC - WY 450F LANDER WY
2021-02-02 307-554-9XXX 9000–9999Assigned ONVOY, LLC - WY 450F GLENROCK WY
2021-02-02 307-785-4XXX 4000–4999Assigned ONVOY, LLC - WY 450F WBLLFOURCH WY

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.