NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

7 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 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
2017-09-01 574-285-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F NAPPANEE IN
2017-09-01 574-316-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 PLYMOUTH IN
2017-09-01 574-777-7XXX 7000–7999Assigned ONVOY, LLC - IN 097D OSCEOLA IN
2017-08-22 574-999-2XXX 2000–2999Assigned ONVOY, LLC - IN 097D SOUTH BEND IN
2017-08-22 574-999-3XXX 3000–3999Assigned ONVOY, LLC - IN 097D SOUTH BEND IN
2017-08-22 574-999-4XXX 4000–4999Assigned ONVOY, LLC - IN 097D SOUTH BEND IN
2017-08-11 574-240-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 MONTICELLO IN
2017-07-05 574-931-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 SOUTH BEND IN
2017-06-16 574-606-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2017-06-16 574-606-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2017-06-16 574-999-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SOUTH BEND IN
2017-06-12 574-931-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SOUTH BEND IN
2017-05-19 574-341-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLYMOUTH IN
2017-05-19 574-393-8XXX 8000–8999Assigned ONVOY, LLC - IN 097D SOUTH BEND IN
2017-05-15 574-227-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F MILLWOOD IN
2017-05-15 574-301-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F BREMEN IN
2017-02-21 574-203-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F LAPAZ IN
2017-02-21 574-221-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F NAPPANEE IN
2017-02-14 574-999-7XXX 7000–7999Assigned ONVOY, LLC - IN 097D SOUTH BEND IN
2017-02-14 574-999-9XXX 9000–9999Assigned ONVOY, LLC - IN 097D SOUTH BEND IN
2017-01-20 574-363-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 BOURBON IN
2017-01-13 574-931-4XXX 4000–4999Assigned METROPCS, INC. 5562 SOUTH BEND IN
2017-01-13 574-931-5XXX 5000–5999Assigned METROPCS, INC. 5562 SOUTH BEND IN
2017-01-13 574-931-6XXX 6000–6999Assigned METROPCS, INC. 5562 SOUTH BEND IN
2017-01-04 574-526-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 LEESBURG IN
2016-12-06 574-301-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 BREMEN IN
2016-11-07 574-709-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LOGANSPORT IN
2016-10-11 574-406-3XXX 3000–3999Assigned METROPCS, INC. 5562 SOUTH BEND IN
2016-09-23 574-385-2XXX 2000–2999Assigned ONVOY, LLC - IN 097D WARSAW IN
2016-09-12 574-373-2XXX 2000–2999Assigned BRIGHTSPEED OF INDIANA, LLC 0832 WARSAW IN
2016-09-12 574-373-3XXX 3000–3999Assigned BRIGHTSPEED OF INDIANA, LLC 0832 WARSAW IN
2016-09-12 574-373-4XXX 4000–4999Assigned BRIGHTSPEED OF INDIANA, LLC 0832 WARSAW IN
2016-09-12 574-373-5XXX 5000–5999Assigned BRIGHTSPEED OF INDIANA, LLC 0832 WARSAW IN
2016-08-26 574-747-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2016-08-19 574-598-6XXX 6000–6999Assigned RTC COMMUNICATIONS CORP. 4552 AKRON IN
2016-08-19 574-598-8XXX 8000–8999Assigned RTC COMMUNICATIONS CORP. 4552 AKRON IN
2016-08-19 574-931-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SOUTH BEND IN
2016-08-04 574-285-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 NAPPANEE IN
2016-08-02 574-322-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J ELKHART IN
2016-08-02 574-413-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SOUTH BEND IN
2016-07-19 574-393-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SOUTH BEND IN
2016-07-19 574-393-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SOUTH BEND IN
2016-07-19 574-393-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SOUTH BEND IN
2016-07-19 574-402-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SOUTH BEND IN
2016-07-19 574-402-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SOUTH BEND IN
2016-07-08 574-284-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C SOUTH BEND IN
2016-07-08 574-393-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 SOUTH BEND IN
2016-07-08 574-393-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 SOUTH BEND IN
2016-07-08 574-393-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 SOUTH BEND IN
2016-07-08 574-393-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 SOUTH BEND 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.