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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2005-08-17 574-491-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J BURKET IN
2005-08-17 574-858-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J ATWOOD IN
2005-08-09 574-538-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 GOSHEN IN
2005-08-05 574-538-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 GOSHEN IN
2005-08-05 574-835-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROCHESTER IN
2005-08-03 574-226-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J ELKHART IN
2005-08-03 574-329-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J OSCEOLA IN
2005-08-03 574-358-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J MIDDLEBURY IN
2005-08-03 574-540-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J PLYMOUTH IN
2005-08-03 574-830-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J DUNLAP IN
2005-08-03 574-862-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J WAKARUSA IN
2005-08-03 574-971-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J GOSHEN IN
2005-07-25 574-323-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2005-07-21 574-204-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SOUTH BEND IN
2005-07-15 574-622-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J BRISTOL IN
2005-07-11 574-206-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2005-07-11 574-206-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2005-07-11 574-309-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SOUTH BEND IN
2005-07-11 574-309-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SOUTH BEND IN
2005-05-26 574-265-2XXX 2000–2999Assigned COMMUNICATIONS VENTURE CORP DBA INDIGITAL TELECOM 4169 WARSAW IN
2005-05-26 574-325-1XXX 1000–1999Assigned COMMUNICATIONS VENTURE CORP DBA INDIGITAL TELECOM 4169 SYRACUSE IN
2005-05-26 574-606-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELKHART IN
2005-05-26 574-773-8XXX 8000–8999Assigned COMMUNICATIONS VENTURE CORP DBA INDIGITAL TELECOM 4169 NAPPANEE IN
2005-05-18 574-516-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 LOGANSPORT IN
2005-05-10 574-253-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 LEESBURG IN
2005-05-10 574-309-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SOUTH BEND IN
2005-05-10 574-538-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 GOSHEN IN
2005-05-05 574-386-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2005-05-02 574-216-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CULVER IN
2005-05-02 574-584-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 ELKHART IN
2005-04-20 574-217-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2005-04-18 574-971-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J GOSHEN IN
2005-04-13 574-206-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2005-04-13 574-309-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SOUTH BEND IN
2005-04-13 574-386-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2005-04-13 574-612-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2005-04-07 574-516-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J LOGANSPORT IN
2005-03-29 574-252-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTH BEND IN
2005-03-10 574-217-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SOUTH BEND IN
2005-03-08 574-248-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 BREMEN IN
2005-03-08 574-306-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 WARSAW IN
2005-03-08 574-821-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 MIDDLEBURY IN
2005-02-28 574-325-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 SYRACUSE IN
2005-02-28 574-830-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 DUNLAP IN
2005-02-28 574-914-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 PLYMOUTH IN
2005-02-28 574-966-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 BRISTOL IN
2005-02-16 574-302-4XXX 4000–4999Assigned METROPCS, INC. 5562 SOUTH BEND IN
2005-02-10 574-607-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 OSCEOLA IN
2005-02-10 574-862-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 WAKARUSA IN
2005-02-07 574-309-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 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.