NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

7 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2010-05-20 574-306-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WARSAW IN
2010-05-20 574-349-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GOSHEN IN
2010-05-17 574-221-2XXX 2000–2999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F NAPPANEE IN
2010-05-17 574-244-2XXX 2000–2999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F NO WEBSTER IN
2010-05-17 574-248-6XXX 6000–6999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F BREMEN IN
2010-05-17 574-253-6XXX 6000–6999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F LEESBURG IN
2010-05-17 574-306-3XXX 3000–3999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F WARSAW IN
2010-05-17 574-688-0XXX 0000–0999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F PIERCETON IN
2010-05-12 574-303-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SOUTH BEND IN
2010-05-12 574-767-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 PLYMOUTH IN
2010-05-11 574-322-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J ELKHART IN
2010-04-16 574-337-1XXX 1000–1999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F SYRACUSE IN
2010-04-15 574-742-6XXX 6000–6999Assigned ONVOY, LLC - IN 097D OSCEOLA IN
2010-04-05 574-584-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2010-04-02 574-398-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LOGANSPORT IN
2010-03-31 574-367-2XXX 2000–2999Assigned ONVOY, LLC - IN 097D SOUTH BEND IN
2010-03-29 574-398-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 LOGANSPORT IN
2010-03-22 574-303-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTH BEND IN
2010-03-09 574-383-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C SOUTH BEND IN
2010-03-04 574-249-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 KNOX IN
2010-03-04 574-303-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SOUTH BEND IN
2010-03-04 574-349-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 GOSHEN IN
2010-03-04 574-350-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2010-03-04 574-350-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2010-03-04 574-377-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 LEESBURG IN
2010-03-04 574-549-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WARSAW IN
2010-02-08 574-350-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2010-02-05 574-350-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ELKHART IN
2010-02-04 574-349-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 GOSHEN IN
2010-01-25 574-383-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SOUTH BEND IN
2010-01-25 574-387-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F SOUTH BEND IN
2010-01-07 574-377-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 LEESBURG IN
2009-12-22 574-200-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WINAMAC IN
2009-12-07 574-341-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLYMOUTH IN
2009-12-07 574-971-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 GOSHEN IN
2009-12-02 574-575-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ELKHART IN
2009-12-01 574-307-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 SOUTH BEND IN
2009-11-17 574-635-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C CULVER IN
2009-10-29 574-310-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 SOUTH BEND IN
2009-10-09 574-767-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLYMOUTH IN
2009-09-14 574-316-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F PLYMOUTH IN
2009-09-04 574-855-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SOUTH BEND IN
2009-09-02 574-205-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WINAMAC IN
2009-09-02 574-207-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KNOX IN
2009-09-02 574-216-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CULVER IN
2009-09-02 574-228-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BURNETTSVL IN
2009-09-02 574-248-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BREMEN IN
2009-09-02 574-279-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WALKERTON IN
2009-09-02 574-281-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ARGOS IN
2009-09-02 574-325-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SYRACUSE IN

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.