NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

12 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 317
ONVOY, LLC - IN 8
OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 1
HD CARRIER LLC 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 1
BANDWIDTH.COM CLEC, 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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2016-09-12 317-552-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 INDIANAPLS IN
2016-09-08 317-827-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J FISHERS IN
2016-09-07 317-552-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2016-08-23 317-764-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J NOBLESVL IN
2016-08-22 317-342-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F ZIONSVILLE IN
2016-08-22 317-659-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F FAIRLAND IN
2016-08-09 317-758-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SHERIDAN IN
2016-08-09 317-763-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F WESTFIELD IN
2016-08-04 317-751-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 WHITELAND IN
2016-08-03 317-499-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 INDIANAPLS IN
2016-08-03 317-499-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 INDIANAPLS IN
2016-08-03 317-499-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 INDIANAPLS IN
2016-08-03 317-552-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 INDIANAPLS IN
2016-08-03 317-552-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 INDIANAPLS IN
2016-07-26 317-552-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F INDIANAPLS IN
2016-07-26 317-552-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F INDIANAPLS IN
2016-07-20 317-795-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF INDIANA, LP - IN 7060 CARMEL IN
2016-07-19 317-343-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F CARMEL IN
2016-07-19 317-499-0XXX 0000–0999Assigned METROPCS, INC. 5562 INDIANAPLS IN
2016-07-19 317-499-8XXX 8000–8999Assigned METROPCS, INC. 5562 INDIANAPLS IN
2016-07-19 317-499-9XXX 9000–9999Assigned METROPCS, INC. 5562 INDIANAPLS IN
2016-07-19 317-668-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F FRANKLIN IN
2016-07-19 317-743-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F GREENWOOD IN
2016-07-19 317-743-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F GREENWOOD IN
2016-07-19 317-932-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F OAKLANDON IN
2016-07-19 317-953-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F NEWPALSTIN IN
2016-07-19 317-967-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F GREENFIELD IN
2016-07-12 317-469-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 INDIANAPLS IN
2016-07-05 317-449-4XXX 4000–4999Assigned ONVOY, LLC - IN 097D ACTON IN
2016-07-05 317-449-5XXX 5000–5999Assigned ONVOY, LLC - IN 097D ACTON IN
2016-06-29 317-764-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NOBLESVL IN
2016-06-29 317-778-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2016-06-29 317-778-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2016-06-29 317-778-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2016-06-29 317-778-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2016-06-29 317-778-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2016-06-29 317-778-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2016-06-29 317-778-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2016-06-29 317-778-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2016-06-29 317-778-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2016-06-29 317-778-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2016-06-27 317-562-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F INDIANAPLS IN
2016-06-24 317-693-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2016-06-24 317-746-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2016-06-24 317-746-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2016-06-24 317-746-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2016-06-24 317-922-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NOBLESVL IN
2016-06-24 317-922-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NOBLESVL IN
2016-06-22 317-746-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J INDIANAPLS IN
2016-06-21 317-827-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F FISHERS IN

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.