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
2020-05-26 307-285-1XXX 1000–1999Assigned AIRUS, INC. - WY 581H BUFFALO WY
2020-05-26 307-624-4XXX 4000–4999Assigned AIRUS, INC. - WY 581H DOUGLAS WY
2020-05-18 307-218-0XXX 0000–0999Assigned AIRUS, INC. - WY 581H SHERIDAN WY
2020-05-07 307-770-5XXX 5000–5999Assigned ALL WEST/WYOMING, INC. 3880 FARSON WY
2020-05-05 307-227-6XXX 6000–6999Assigned ONVOY, LLC - WY 450F MAMMOTH WY
2020-05-05 307-243-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - WY 9416 CASPER WY
2020-05-05 307-263-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - WY 9416 CHEYENNE WY
2020-05-05 307-312-9XXX 9000–9999Assigned ONVOY, LLC - WY 450F WSPEARFISH WY
2020-04-06 307-210-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SOUTHESRDN WY
2020-04-06 307-210-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SOUTHESRDN WY
2020-04-06 307-236-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BURNS WY
2020-04-06 307-236-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BURNS WY
2020-04-01 307-278-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BUFFALO WY
2020-04-01 307-621-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BUFFALO WY
2020-04-01 307-621-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BUFFALO WY
2020-03-27 307-650-2XXX 2000–2999Assigned AIRUS, INC. - WY 581H CHEYENNE WY
2020-03-26 307-284-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 JACKSON WY
2020-03-26 307-284-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 JACKSON WY
2020-03-26 307-284-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 JACKSON WY
2020-03-12 307-207-9XXX 9000–9999Assigned AIRUS, INC. - WY 581H LAKE WY
2020-03-05 307-204-7XXX 7000–7999Assigned ONVOY, LLC - WY 450F CODY WY
2020-02-21 307-204-8XXX 8000–8999Assigned AIRUS, INC. - WY 581H CODY WY
2020-02-18 307-309-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WY 081F GLENROCK WY
2020-01-30 307-400-0XXX 0000–0999Assigned TERRA NOVA TELECOM INC. 145J CHEYENNE WY
2020-01-24 307-312-6XXX 6000–6999Assigned ONVOY, LLC - WY 450F WSPEARFISH WY
2020-01-10 307-254-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 6566 POWELL WY
2020-01-10 307-338-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TORRINGTON WY
2020-01-07 307-284-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - WY 9416 JACKSON WY
2020-01-02 307-278-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WY 9416 BUFFALO WY
2019-12-17 307-417-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WY 9416 RAWLINS WY
2019-12-12 307-227-9XXX 9000–9999Assigned AIRUS, INC. - WY 581H MAMMOTH WY
2019-12-11 307-207-8XXX 8000–8999Assigned TELNYX LLC 073H LAKE WY
2019-11-29 307-218-2XXX 2000–2999Assigned ONVOY, LLC - WY 450F SHERIDAN WY
2019-11-29 307-218-3XXX 3000–3999Assigned ONVOY, LLC - WY 450F SHERIDAN WY
2019-11-29 307-284-2XXX 2000–2999Assigned ONVOY, LLC - WY 450F JACKSON WY
2019-11-29 307-284-3XXX 3000–3999Assigned ONVOY, LLC - WY 450F JACKSON WY
2019-11-29 307-313-1XXX 1000–1999Assigned ONVOY, LLC - WY 450F EVANSTON WY
2019-11-29 307-481-2XXX 2000–2999Assigned ONVOY, LLC - WY 450F LUSK WY
2019-11-29 307-481-6XXX 6000–6999Assigned ONVOY, LLC - WY 450F LUSK WY
2019-11-21 307-284-0XXX 0000–0999Assigned SILVER STAR TELEPHONE COMPANY, INC. - WY 110G JACKSON WY
2019-10-28 307-488-1XXX 1000–1999Assigned TELNYX LLC 073H LANDER WY
2019-10-24 307-310-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H CHEYENNE WY
2019-10-17 307-263-2XXX 2000–2999Assigned CSC WIRELESS, LLC 425J CHEYENNE WY
2019-10-11 307-300-0XXX 0000–0999Assigned ONVOY, LLC - WY 450F POWELL WY
2019-10-11 307-300-3XXX 3000–3999Assigned ONVOY, LLC - WY 450F POWELL WY
2019-10-10 307-228-8XXX 8000–8999Assigned AIRUS, INC. - WY 581H GILLETTE WY
2019-10-08 307-204-4XXX 4000–4999Assigned ONVOY, LLC - WY 450F CODY WY
2019-10-08 307-204-5XXX 5000–5999Assigned ONVOY, LLC - WY 450F CODY WY
2019-10-08 307-207-4XXX 4000–4999Assigned ONVOY, LLC - WY 450F LAKE WY
2019-10-08 307-207-5XXX 5000–5999Assigned ONVOY, LLC - WY 450F LAKE 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.