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
2015-11-16 574-404-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SOUTH BEND IN
2015-10-23 574-218-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F ELKHART IN
2015-10-20 574-804-6XXX 6000–6999Assigned PEERLESS NETWORK OF INDIANA, LLC - IN 279F NO LIBERTY IN
2015-10-15 574-207-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F KNOX IN
2015-10-13 574-241-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F NO JUDSON IN
2015-10-12 574-221-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F NAPPANEE IN
2015-10-12 574-804-8XXX 8000–8999Assigned PEERLESS NETWORK OF INDIANA, LLC - IN 279F NO LIBERTY IN
2015-10-06 574-200-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F WINAMAC IN
2015-10-06 574-651-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F OSCEOLA IN
2015-09-30 574-804-9XXX 9000–9999Assigned PEERLESS NETWORK OF INDIANA, LLC - IN 279F NO LIBERTY IN
2015-09-25 574-316-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F PLYMOUTH IN
2015-09-21 574-349-9XXX 9000–9999Assigned PEERLESS NETWORK OF INDIANA, LLC - IN 279F GOSHEN IN
2015-09-21 574-821-9XXX 9000–9999Assigned PEERLESS NETWORK OF INDIANA, LLC - IN 279F MIDDLEBURY IN
2015-09-16 574-314-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SOUTH BEND IN
2015-09-08 574-406-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 SOUTH BEND IN
2015-09-08 574-526-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 LEESBURG IN
2015-09-02 574-354-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 NAPPANEE IN
2015-09-01 574-306-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 WARSAW IN
2015-08-10 574-314-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2015-08-10 574-314-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2015-08-10 574-314-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2015-08-10 574-314-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2015-08-10 574-314-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2015-07-17 574-566-0XXX 0000–0999Assigned ONVOY, LLC - IN 097D CLAYPOOL IN
2015-07-17 574-566-8XXX 8000–8999Assigned ONVOY, LLC - IN 097D CLAYPOOL IN
2015-07-13 574-797-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 NEWCARLISL IN
2015-07-10 574-971-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J GOSHEN IN
2015-07-07 574-314-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 SOUTH BEND IN
2015-06-17 574-725-2XXX 2000–2999Assigned ONVOY, LLC - IN 097D LOGANSPORT IN
2015-06-10 574-218-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2015-06-09 574-314-9XXX 9000–9999Assigned PEERLESS NETWORK OF INDIANA, LLC - IN 279F SOUTH BEND IN
2015-05-08 574-355-8XXX 8000–8999Assigned PEERLESS NETWORK OF INDIANA, LLC - IN 279F LOGANSPORT IN
2015-05-08 574-857-0XXX 0000–0999Assigned PEERLESS NETWORK OF INDIANA, LLC - IN 279F FULTON IN
2015-05-08 574-889-3XXX 3000–3999Assigned PEERLESS NETWORK OF INDIANA, LLC - IN 279F LUCERNE IN
2015-05-05 574-240-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MONTICELLO IN
2015-04-23 574-313-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F FLORA IN
2015-04-23 574-737-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 LOGANSPORT IN
2015-04-15 574-725-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LOGANSPORT IN
2015-04-06 574-808-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 MONTICELLO IN
2015-03-25 574-784-1XXX 1000–1999Assigned PEERLESS NETWORK OF INDIANA, LLC - IN 279F LAPAZ IN
2015-03-19 574-314-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SOUTH BEND IN
2015-03-17 574-549-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J WARSAW IN
2015-03-12 574-358-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 MIDDLEBURY IN
2015-03-11 574-316-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J PLYMOUTH IN
2015-02-10 574-281-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F ARGOS IN
2015-02-05 574-891-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J DUNLAP IN
2015-02-04 574-227-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F MILLWOOD IN
2015-02-04 574-301-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F BREMEN IN
2014-12-29 574-347-8XXX 8000–8999Assigned PEERLESS NETWORK OF INDIANA, LLC - IN 279F SOUTH BEND IN
2014-12-23 574-218-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART 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.