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
2014-02-26 574-703-5XXX 5000–5999Assigned METROPCS, INC. 5562 SOUTH BEND IN
2014-02-13 574-703-8XXX 8000–8999Assigned METROPCS, INC. 5562 SOUTH BEND IN
2014-02-13 574-703-9XXX 9000–9999Assigned METROPCS, INC. 5562 SOUTH BEND IN
2014-01-30 574-401-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2014-01-30 574-401-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2014-01-22 574-607-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F OSCEOLA IN
2014-01-22 574-607-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F OSCEOLA IN
2014-01-22 574-635-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F CULVER IN
2013-12-19 574-401-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 SOUTH BEND IN
2013-12-17 574-327-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ELKHART IN
2013-12-17 574-401-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SOUTH BEND IN
2013-12-13 574-703-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SOUTH BEND IN
2013-12-11 574-327-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2013-12-04 574-326-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2013-12-04 574-334-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SOUTH BEND IN
2013-11-25 574-341-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLYMOUTH IN
2013-11-15 574-704-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PLYMOUTH IN
2013-11-14 574-213-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SOUTH BEND IN
2013-11-14 574-213-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SOUTH BEND IN
2013-11-14 574-222-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SOUTH BEND IN
2013-11-14 574-292-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SOUTH BEND IN
2013-11-14 574-318-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SOUTH BEND IN
2013-11-14 574-318-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SOUTH BEND IN
2013-11-07 574-598-9XXX 9000–9999Assigned PEERLESS NETWORK OF INDIANA, LLC - IN 279F AKRON IN
2013-11-07 574-857-8XXX 8000–8999Assigned PEERLESS NETWORK OF INDIANA, LLC - IN 279F FULTON IN
2013-11-06 574-703-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C SOUTH BEND IN
2013-11-04 574-739-9XXX 9000–9999Assigned IP HORIZON LLC 515J LOGANSPORT IN
2013-11-04 574-889-1XXX 1000–1999Assigned IP HORIZON LLC 515J LUCERNE IN
2013-10-31 574-301-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BREMEN IN
2013-10-21 574-334-2XXX 2000–2999Assigned METROPCS, INC. 5562 SOUTH BEND IN
2013-10-21 574-334-3XXX 3000–3999Assigned METROPCS, INC. 5562 SOUTH BEND IN
2013-10-21 574-742-5XXX 5000–5999Assigned METROPCS, INC. 5562 OSCEOLA IN
2013-10-18 574-889-8XXX 8000–8999Assigned PEERLESS NETWORK OF INDIANA, LLC - IN 279F LUCERNE IN
2013-10-18 574-889-9XXX 9000–9999Assigned PEERLESS NETWORK OF INDIANA, LLC - IN 279F LUCERNE IN
2013-10-17 574-240-1XXX 1000–1999Assigned PULASKI-WHITE RURAL TELEPHONE COOPERATIVE, INC. 204H MONTICELLO IN
2013-10-17 574-626-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 WALTON IN
2013-09-23 574-401-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 SOUTH BEND IN
2013-09-20 574-516-8XXX 8000–8999Assigned PEERLESS NETWORK OF INDIANA, LLC - IN 279F LOGANSPORT IN
2013-09-20 574-516-9XXX 9000–9999Assigned PEERLESS NETWORK OF INDIANA, LLC - IN 279F LOGANSPORT IN
2013-09-20 574-699-8XXX 8000–8999Assigned PEERLESS NETWORK OF INDIANA, LLC - IN 279F GALVESTON IN
2013-09-20 574-699-9XXX 9000–9999Assigned PEERLESS NETWORK OF INDIANA, LLC - IN 279F GALVESTON IN
2013-09-20 574-725-0XXX 0000–0999Assigned PEERLESS NETWORK OF INDIANA, LLC - IN 279F LOGANSPORT IN
2013-09-20 574-725-1XXX 1000–1999Assigned PEERLESS NETWORK OF INDIANA, LLC - IN 279F LOGANSPORT IN
2013-09-17 574-318-3XXX 3000–3999Assigned ONVOY, LLC - IN 097D SOUTH BEND IN
2013-09-04 574-242-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 WINAMAC IN
2013-08-27 574-327-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ELKHART IN
2013-08-27 574-327-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ELKHART IN
2013-08-15 574-377-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 LEESBURG IN
2013-07-23 574-598-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 AKRON IN
2013-07-12 574-327-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J 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.