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
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 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.