NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

7 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 574
OPENTACT INC. 4
PEERLESS NETWORK OF INDIANA, LLC - IN 1
ONVOY, LLC - IN 1
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 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
2021-07-27 574-301-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F BREMEN IN
2021-07-20 574-786-3XXX 3000–3999Assigned ONVOY, LLC - IN 097D ELKHART IN
2021-07-20 574-786-4XXX 4000–4999Assigned ONVOY, LLC - IN 097D ELKHART IN
2021-07-20 574-786-5XXX 5000–5999Assigned ONVOY, LLC - IN 097D ELKHART IN
2021-07-20 574-786-6XXX 6000–6999Assigned ONVOY, LLC - IN 097D ELKHART IN
2021-07-19 574-332-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F ARGOS IN
2021-07-13 574-354-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 NAPPANEE IN
2021-06-29 574-366-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SOUTH BEND IN
2021-06-29 574-544-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SOUTH BEND IN
2021-06-24 574-375-5XXX 5000–5999Assigned ONVOY, LLC - IN 097D TIPPECANOE IN
2021-06-22 574-345-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H SOUTH BEND IN
2021-06-22 574-345-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H SOUTH BEND IN
2021-06-22 574-345-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H SOUTH BEND IN
2021-06-22 574-345-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H SOUTH BEND IN
2021-06-22 574-345-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H SOUTH BEND IN
2021-06-22 574-345-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H SOUTH BEND IN
2021-06-18 574-784-4XXX 4000–4999Assigned COMMIO, LLC 939H LAPAZ IN
2021-06-18 574-784-5XXX 5000–5999Assigned COMMIO, LLC 939H LAPAZ IN
2021-06-18 574-784-6XXX 6000–6999Assigned COMMIO, LLC 939H LAPAZ IN
2021-06-14 574-244-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F NO WEBSTER IN
2021-06-11 574-228-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F BURNETTSVL IN
2021-06-11 574-240-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F MONTICELLO IN
2021-06-10 574-212-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F MONTEREY IN
2021-06-08 574-200-1XXX 1000–1999Assigned ONVOY, LLC - IN 097D WINAMAC IN
2021-06-08 574-203-8XXX 8000–8999Assigned ONVOY, LLC - IN 097D LAPAZ IN
2021-06-08 574-212-1XXX 1000–1999Assigned ONVOY, LLC - IN 097D MONTEREY IN
2021-06-08 574-227-8XXX 8000–8999Assigned ONVOY, LLC - IN 097D MILLWOOD IN
2021-06-08 574-230-8XXX 8000–8999Assigned ONVOY, LLC - IN 097D KEWANNA IN
2021-06-08 574-240-0XXX 0000–0999Assigned ONVOY, LLC - IN 097D MONTICELLO IN
2021-06-08 574-241-8XXX 8000–8999Assigned ONVOY, LLC - IN 097D NO JUDSON IN
2021-06-08 574-253-9XXX 9000–9999Assigned ONVOY, LLC - IN 097D LEESBURG IN
2021-06-08 574-275-0XXX 0000–0999Assigned ONVOY, LLC - IN 097D SYRACUSE IN
2021-06-08 574-285-9XXX 9000–9999Assigned ONVOY, LLC - IN 097D NAPPANEE IN
2021-06-08 574-306-1XXX 1000–1999Assigned ONVOY, LLC - IN 097D WARSAW IN
2021-06-08 574-330-1XXX 1000–1999Assigned ONVOY, LLC - IN 097D MILLERSBG IN
2021-06-08 574-353-8XXX 8000–8999Assigned ONVOY, LLC - IN 097D MENTONE IN
2021-06-08 574-526-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F LEESBURG IN
2021-06-08 574-586-1XXX 1000–1999Assigned ONVOY, LLC - IN 097D WALKERTON IN
2021-06-08 574-678-8XXX 8000–8999Assigned ONVOY, LLC - IN 097D MILFORD IN
2021-06-08 574-688-9XXX 9000–9999Assigned ONVOY, LLC - IN 097D PIERCETON IN
2021-06-08 574-797-1XXX 1000–1999Assigned ONVOY, LLC - IN 097D NEWCARLISL IN
2021-06-08 574-804-0XXX 0000–0999Assigned ONVOY, LLC - IN 097D NO LIBERTY IN
2021-06-08 574-806-9XXX 9000–9999Assigned ONVOY, LLC - IN 097D KNOX IN
2021-06-08 574-834-8XXX 8000–8999Assigned ONVOY, LLC - IN 097D NO WEBSTER IN
2021-06-08 574-943-0XXX 0000–0999Assigned ONVOY, LLC - IN 097D IDAVILLE IN
2021-06-07 574-228-8XXX 8000–8999Assigned ONVOY, LLC - IN 097D BURNETTSVL IN
2021-06-07 574-313-8XXX 8000–8999Assigned ONVOY, LLC - IN 097D FLORA IN
2021-06-07 574-328-5XXX 5000–5999Assigned ONVOY, LLC - IN 097D BURKET IN
2021-06-07 574-331-1XXX 1000–1999Assigned ONVOY, LLC - IN 097D BREMEN IN
2021-06-07 574-332-7XXX 7000–7999Assigned ONVOY, LLC - IN 097D ARGOS IN

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.