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
2005-02-07 574-612-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2005-02-01 574-633-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 WYATT IN
2005-01-28 574-601-6XXX 6000–6999Assigned METROPCS, INC. 5562 LOGANSPORT IN
2005-01-28 574-933-0XXX 0000–0999Assigned COMMUNICATIONS VENTURE CORP DBA INDIGITAL TELECOM 4169 PLYMOUTH IN
2005-01-20 574-339-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTH BEND IN
2005-01-11 574-323-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2005-01-10 574-217-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 SOUTH BEND IN
2004-12-29 574-252-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTH BEND IN
2004-12-28 574-265-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WARSAW IN
2004-12-28 574-606-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELKHART IN
2004-12-28 574-607-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OSCEOLA IN
2004-12-27 574-216-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 CULVER IN
2004-12-27 574-253-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 LEESBURG IN
2004-12-27 574-281-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 ARGOS IN
2004-12-27 574-653-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 KEWANNA IN
2004-12-27 574-946-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 WINAMAC IN
2004-12-13 574-586-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 WALKERTON IN
2004-12-08 574-339-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTH BEND IN
2004-12-06 574-612-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2004-11-18 574-339-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTH BEND IN
2004-11-08 574-302-3XXX 3000–3999Assigned METROPCS, INC. 5562 SOUTH BEND IN
2004-11-05 574-808-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MONTICELLO IN
2004-11-04 574-323-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2004-11-04 574-323-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2004-09-08 574-309-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SOUTH BEND IN
2004-08-23 574-217-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2004-08-18 574-355-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 LOGANSPORT IN
2004-08-16 574-303-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2004-08-16 574-303-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2004-08-16 574-303-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2004-08-13 574-606-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELKHART IN
2004-08-13 574-612-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2004-08-13 574-612-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2004-08-04 574-207-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 KNOX IN
2004-08-03 574-339-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTH BEND IN
2004-07-13 574-516-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 LOGANSPORT IN
2004-06-28 574-598-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 AKRON IN
2004-06-21 574-643-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 ROYAL CTR IN
2004-04-28 574-203-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 LAPAZ IN
2004-04-28 574-228-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 BURNETTSVL IN
2004-04-28 574-241-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 NO JUDSON IN
2004-04-28 574-907-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 MILLWOOD IN
2004-03-01 574-322-2XXX 2000–2999Assigned METROPCS, INC. 5562 ELKHART IN
2004-03-01 574-322-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ELKHART IN
2004-02-26 574-203-1XXX 1000–1999Assigned FBN INDIANA, INC. - IN 4117 LAPAZ IN
2004-02-26 574-230-1XXX 1000–1999Assigned FBN INDIANA, INC. - IN 4117 KEWANNA IN
2004-02-26 574-244-1XXX 1000–1999Assigned FBN INDIANA, INC. - IN 4117 NO WEBSTER IN
2004-02-26 574-265-0XXX 0000–0999Assigned FBN INDIANA, INC. - IN 4117 WARSAW IN
2004-02-26 574-301-0XXX 0000–0999Assigned FBN INDIANA, INC. - IN 4117 BREMEN IN
2004-02-26 574-356-0XXX 0000–0999Assigned FBN INDIANA, INC. - IN 4117 NAPPANEE 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.