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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2004-02-23 317-455-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J WESTNEWTON IN
2004-02-20 317-215-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J GREENWOOD IN
2004-02-20 317-218-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J CARMEL IN
2004-02-20 317-284-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J FISHERS IN
2004-02-20 317-622-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J CUMBERLAND IN
2004-02-20 317-723-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J OAKLANDON IN
2004-02-09 317-225-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2004-02-09 317-225-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2004-02-09 317-225-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2004-01-19 317-362-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2004-01-16 317-333-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 INDIANAPLS IN
2004-01-16 317-333-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 INDIANAPLS IN
2004-01-16 317-395-6XXX 6000–6999Assigned METROPCS, INC. 5562 SHELBYVL IN
2004-01-05 317-215-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GREENWOOD IN
2003-12-03 317-364-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SHELBYVL IN
2003-11-05 317-292-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2003-11-05 317-292-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2003-11-05 317-292-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2003-10-28 317-223-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 INDIANAPLS IN
2003-10-16 317-214-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 NOBLESVL IN
2003-10-15 317-584-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 MOORESVL IN
2003-10-08 317-364-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SHELBYVL IN
2003-10-06 317-260-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2003-10-06 317-260-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2003-10-06 317-260-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2003-09-25 317-945-7XXX 7000–7999Assigned METROPCS, INC. 5562 INDIANAPLS IN
2003-08-29 317-333-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 INDIANAPLS IN
2003-08-29 317-945-2XXX 2000–2999Assigned METROPCS, INC. 5562 INDIANAPLS IN
2003-08-29 317-945-3XXX 3000–3999Assigned METROPCS, INC. 5562 INDIANAPLS IN
2003-08-29 317-945-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 INDIANAPLS IN
2003-08-29 317-945-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 INDIANAPLS IN
2003-07-28 317-204-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 PLAINFIELD IN
2003-07-28 317-428-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF INDIANA, LP - IN 7060 CARMEL IN
2003-07-28 317-565-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 NOBLESVL IN
2003-07-28 317-708-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 CARMEL IN
2003-07-21 317-491-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 INDIANAPLS IN
2003-06-13 317-491-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 INDIANAPLS IN
2003-06-13 317-491-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 INDIANAPLS IN
2003-06-13 317-491-4XXX 4000–4999Assigned METROPCS, INC. 5562 INDIANAPLS IN
2003-04-16 317-286-8XXX 8000–8999Assigned METROPCS, INC. 5562 BROWNSBURG IN
2003-04-16 317-428-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 CARMEL IN
2003-04-16 317-534-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GREENWOOD IN
2003-04-16 317-947-8XXX 8000–8999Assigned METROPCS, INC. 5562 CUMBERLAND IN
2003-04-03 317-225-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2003-04-03 317-947-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J CUMBERLAND IN
2003-03-07 317-217-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J INDIANAPLS IN
2003-03-05 317-225-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2003-02-27 317-399-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 WESTFIELD IN
2003-02-27 317-428-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF INDIANA, LP - IN 7060 CARMEL IN
2003-02-24 317-829-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 INDIANAPLS 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.