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
2014-12-22 574-216-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F CULVER IN
2014-12-22 574-621-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F OSCEOLA IN
2014-12-22 574-621-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F OSCEOLA IN
2014-12-22 574-842-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F CULVER IN
2014-12-17 574-406-0XXX 0000–0999Assigned ONVOY, LLC - IN 097D SOUTH BEND IN
2014-12-17 574-406-1XXX 1000–1999Assigned ONVOY, LLC - IN 097D SOUTH BEND IN
2014-12-17 574-406-2XXX 2000–2999Assigned ONVOY, LLC - IN 097D SOUTH BEND IN
2014-12-16 574-347-0XXX 0000–0999Assigned METROPCS, INC. 5562 SOUTH BEND IN
2014-12-16 574-347-1XXX 1000–1999Assigned METROPCS, INC. 5562 SOUTH BEND IN
2014-12-16 574-347-2XXX 2000–2999Assigned METROPCS, INC. 5562 SOUTH BEND IN
2014-12-16 574-347-9XXX 9000–9999Assigned METROPCS, INC. 5562 SOUTH BEND IN
2014-11-12 574-208-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SOUTH BEND IN
2014-11-12 574-404-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SOUTH BEND IN
2014-11-12 574-404-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SOUTH BEND IN
2014-11-12 574-404-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SOUTH BEND IN
2014-11-12 574-404-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SOUTH BEND IN
2014-11-12 574-440-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SOUTH BEND IN
2014-11-03 574-216-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F CULVER IN
2014-10-29 574-696-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F MILFORD IN
2014-10-27 574-337-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SYRACUSE IN
2014-10-10 574-341-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLYMOUTH IN
2014-10-10 574-566-5XXX 5000–5999Assigned ONVOY, LLC - IN 097D CLAYPOOL IN
2014-10-03 574-253-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 LEESBURG IN
2014-09-29 574-218-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 ELKHART IN
2014-09-11 574-404-6XXX 6000–6999Assigned AT&T ENTERPRISES, LLC 516C SOUTH BEND IN
2014-08-22 574-218-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2014-08-21 574-635-9XXX 9000–9999Assigned ONVOY, LLC - IN 097D CULVER IN
2014-08-15 574-404-0XXX 0000–0999Assigned METROPCS, INC. 5562 SOUTH BEND IN
2014-08-15 574-404-4XXX 4000–4999Assigned METROPCS, INC. 5562 SOUTH BEND IN
2014-08-07 574-218-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2014-08-07 574-404-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SOUTH BEND IN
2014-08-05 574-702-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LOGANSPORT IN
2014-07-09 574-701-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GALVESTON IN
2014-07-03 574-664-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 TWELVEMILE IN
2014-07-02 574-302-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SOUTH BEND IN
2014-07-02 574-327-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2014-07-01 574-404-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J SOUTH BEND IN
2014-06-26 574-857-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FULTON IN
2014-06-25 574-382-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MACY IN
2014-06-25 574-598-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J AKRON IN
2014-06-25 574-626-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WALTON IN
2014-06-25 574-643-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ROYAL CTR IN
2014-06-25 574-889-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LUCERNE IN
2014-06-10 574-703-6XXX 6000–6999Assigned METROPCS, INC. 5562 SOUTH BEND IN
2014-05-29 574-622-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 BRISTOL IN
2014-05-23 574-208-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 SOUTH BEND IN
2014-05-23 574-516-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 LOGANSPORT IN
2014-05-16 574-566-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CLAYPOOL IN
2014-04-30 574-318-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SOUTH BEND IN
2014-04-30 574-334-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F 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.