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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2004-02-26 574-529-9XXX 9000–9999Assigned FBN INDIANA, INC. - IN 4117 SYRACUSE IN
2004-02-26 574-540-0XXX 0000–0999Assigned FBN INDIANA, INC. - IN 4117 PLYMOUTH IN
2004-02-25 574-205-1XXX 1000–1999Assigned FBN INDIANA, INC. - IN 4117 WINAMAC IN
2004-02-25 574-207-1XXX 1000–1999Assigned FBN INDIANA, INC. - IN 4117 KNOX IN
2004-02-25 574-297-2XXX 2000–2999Assigned FBN INDIANA, INC. - IN 4117 MONTICELLO IN
2004-02-25 574-606-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELKHART IN
2004-02-23 574-386-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2004-02-20 574-310-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2004-02-20 574-310-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2004-02-20 574-310-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2004-02-20 574-310-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2004-01-15 574-217-9XXX 9000–9999Assigned ACME COMMUNICATIONS, INC. - IN 9303 SOUTH BEND IN
2004-01-13 574-214-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELKHART IN
2004-01-07 574-386-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2003-12-30 574-386-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2003-12-30 574-386-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2003-12-19 574-302-0XXX 0000–0999Assigned METROPCS, INC. 5562 SOUTH BEND IN
2003-12-01 574-355-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 LOGANSPORT IN
2003-12-01 574-356-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 NAPPANEE IN
2003-11-11 574-297-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MONTICELLO IN
2003-11-11 574-529-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SYRACUSE IN
2003-11-04 574-309-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 SOUTH BEND IN
2003-10-30 574-707-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OSCEOLA IN
2003-10-21 574-607-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 OSCEOLA IN
2003-09-19 574-606-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELKHART IN
2003-08-13 574-214-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELKHART IN
2003-07-31 574-253-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 LEESBURG IN
2003-07-31 574-253-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 LEESBURG IN
2003-05-02 574-322-0XXX 0000–0999Assigned METROPCS, INC. 5562 ELKHART IN
2003-05-02 574-322-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ELKHART IN
2003-04-30 574-310-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2003-04-30 574-310-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2003-03-25 574-301-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BREMEN IN
2003-03-07 574-383-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2003-03-07 574-383-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2003-03-07 574-383-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2003-03-07 574-383-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2003-03-06 574-606-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ELKHART IN
2003-02-27 574-633-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 WYATT IN
2003-02-27 574-699-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 GALVESTON IN
2003-01-17 574-612-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2003-01-17 574-612-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2003-01-17 574-612-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2002-11-13 574-647-0XXX 0000–0999Assigned INDIANA BELL TEL CO INC 9325 SOUTH BEND IN
2002-11-13 574-647-1XXX 1000–1999Assigned INDIANA BELL TEL CO INC 9325 SOUTH BEND IN
2002-11-13 574-647-2XXX 2000–2999Assigned INDIANA BELL TEL CO INC 9325 SOUTH BEND IN
2002-11-13 574-647-3XXX 3000–3999Assigned INDIANA BELL TEL CO INC 9325 SOUTH BEND IN
2002-11-13 574-647-4XXX 4000–4999Assigned INDIANA BELL TEL CO INC 9325 SOUTH BEND IN
2002-11-13 574-647-5XXX 5000–5999Assigned INDIANA BELL TEL CO INC 9325 SOUTH BEND IN
2002-11-13 574-647-6XXX 6000–6999Assigned INDIANA BELL TEL CO INC 9325 SOUTH BEND 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.