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
2006-10-11 574-333-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELKHART IN
2006-10-11 574-333-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELKHART IN
2006-10-09 574-312-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 GOSHEN IN
2006-10-04 574-209-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BREMEN IN
2006-10-04 574-356-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 NAPPANEE IN
2006-10-04 574-520-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2006-10-04 574-855-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J SOUTH BEND IN
2006-10-04 574-855-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SOUTH BEND IN
2006-10-04 574-855-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SOUTH BEND IN
2006-09-28 574-549-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WARSAW IN
2006-09-26 574-344-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 SOUTH BEND IN
2006-09-21 574-344-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTH BEND IN
2006-09-21 574-344-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTH BEND IN
2006-09-13 574-343-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ELKHART IN
2006-09-13 574-343-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ELKHART IN
2006-09-13 574-767-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 PLYMOUTH IN
2006-09-13 574-767-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 PLYMOUTH IN
2006-08-29 574-226-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ELKHART IN
2006-08-28 574-520-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTH BEND IN
2006-08-14 574-376-9XXX 9000–9999Assigned METROPCS, INC. 5562 WARSAW IN
2006-08-14 574-904-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2006-07-24 574-333-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELKHART IN
2006-07-24 574-333-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELKHART IN
2006-07-21 574-904-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTH BEND IN
2006-07-20 574-538-3XXX 3000–3999Assigned COMMUNICATIONS VENTURE CORP DBA INDIGITAL TELECOM 4169 GOSHEN IN
2006-07-17 574-333-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J ELKHART IN
2006-07-17 574-333-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J ELKHART IN
2006-07-17 574-707-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OSCEOLA IN
2006-07-10 574-304-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2006-07-10 574-304-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2006-06-28 574-328-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 BURKET IN
2006-06-28 574-505-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MACY IN
2006-06-27 574-933-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLYMOUTH IN
2006-06-26 574-904-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2006-06-08 574-904-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2006-05-04 574-217-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SOUTH BEND IN
2006-05-04 574-217-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J SOUTH BEND IN
2006-05-02 574-344-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 SOUTH BEND IN
2006-04-28 574-702-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LOGANSPORT IN
2006-04-14 574-304-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELKHART IN
2006-04-14 574-304-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELKHART IN
2006-04-07 574-584-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 ELKHART IN
2006-04-06 574-538-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 GOSHEN IN
2006-04-05 574-297-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MONTICELLO IN
2006-04-03 574-323-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2006-03-31 574-303-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SOUTH BEND IN
2006-03-31 574-303-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SOUTH BEND IN
2006-03-31 574-323-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SOUTH BEND IN
2006-03-31 574-323-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SOUTH BEND IN
2006-03-31 574-808-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MONTICELLO 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.