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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2026-09-17 307-415-8XXX 8000–8999Assigned ONVOY, LLC - WY 450F CHEYENNE WY
2026-09-11 307-493-0XXX 0000–0999Assigned UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 1772 URIE WY
2026-09-11 307-493-1XXX 1000–1999Assigned UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 1772 URIE WY
2026-09-11 307-493-2XXX 2000–2999Assigned UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 1772 URIE WY
2026-09-11 307-493-3XXX 3000–3999Assigned UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 1772 URIE WY
2026-09-11 307-493-4XXX 4000–4999Assigned UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 1772 URIE WY
2026-09-11 307-493-5XXX 5000–5999Assigned UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 1772 URIE WY
2026-09-11 307-493-6XXX 6000–6999Assigned UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 1772 URIE WY
2026-09-11 307-493-7XXX 7000–7999Assigned UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 1772 URIE WY
2026-09-11 307-493-8XXX 8000–8999Assigned UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 1772 URIE WY
2026-09-11 307-493-9XXX 9000–9999Assigned UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 1772 URIE WY
2026-09-11 307-499-0XXX 0000–0999Assigned UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 1772 LYMAN WY
2026-09-11 307-499-1XXX 1000–1999Assigned UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 1772 LYMAN WY
2026-09-11 307-499-2XXX 2000–2999Assigned UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 1772 LYMAN WY
2026-09-11 307-499-3XXX 3000–3999Assigned UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 1772 LYMAN WY
2026-09-11 307-499-4XXX 4000–4999Assigned UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 1772 LYMAN WY
2026-09-11 307-499-5XXX 5000–5999Assigned UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 1772 LYMAN WY
2026-09-11 307-499-6XXX 6000–6999Assigned UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 1772 LYMAN WY
2026-09-11 307-499-7XXX 7000–7999Assigned UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 1772 LYMAN WY
2026-09-11 307-499-8XXX 8000–8999Assigned UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 1772 LYMAN WY
2026-09-11 307-499-9XXX 9000–9999Assigned UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 1772 LYMAN WY
2026-08-20 307-387-7XXX 7000–7999Assigned OPENTACT INC. 824J GILLETTE WY
2026-08-20 307-427-7XXX 7000–7999Assigned OPENTACT INC. 824J MAMMOTH WY
2026-08-18 307-485-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WY 081F CASPER WY
2026-08-04 307-442-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WY 081F EVANSTON WY
2026-08-04 307-479-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WY 081F POWELL WY
2026-08-04 307-482-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WY 081F WHEATLAND WY
2026-08-04 307-639-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WY 081F LANDER WY
2026-07-15 307-385-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WY 081F JACKSON WY
2026-07-09 307-415-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CHEYENNE WY
2026-07-09 307-434-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WY 081F GILLETTE WY
2026-06-29 307-414-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 6566 CHEYENNE WY
2026-06-15 307-247-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WY 081F CASPER WY
2026-06-15 307-414-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WY 081F CHEYENNE WY
2026-06-15 307-449-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WY 081F ROCK SPG WY
2026-05-28 307-396-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GREENRIVER WY
2026-05-19 307-483-5XXX 5000–5999Assigned ALL WEST/WYOMING, INC. 3880 RAWLINS WY
2026-05-07 307-434-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WY 081F GILLETTE WY
2026-05-06 307-210-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SOUTHESRDN WY
2026-04-29 307-435-7XXX 7000–7999Assigned EXIANT COMMUNICATIONS LLC 114J SHERIDAN WY
2026-04-29 307-446-5XXX 5000–5999Assigned EXIANT COMMUNICATIONS LLC 114J WSPEARFISH WY
2026-04-29 307-529-9XXX 9000–9999Assigned EXIANT COMMUNICATIONS LLC 114J CHEYENNE WY
2026-04-06 307-368-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 6566 AFTON WY
2026-04-02 307-454-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERTON WY
2026-03-31 307-496-3XXX 3000–3999Assigned EXIANT COMMUNICATIONS LLC 114J LAKE WY
2026-03-31 307-639-7XXX 7000–7999Assigned EXIANT COMMUNICATIONS LLC 114J LANDER WY
2026-03-26 307-449-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ROCK SPG WY
2026-03-05 307-215-2XXX 2000–2999Assigned TERRA NOVA TELECOM INC. 145J CASPER WY
2026-03-05 307-666-4XXX 4000–4999Assigned TERRA NOVA TELECOM INC. 145J CHEYENNE WY
2026-03-05 307-922-9XXX 9000–9999Assigned TERRA NOVA TELECOM INC. 145J ROCK SPG 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.