NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

34 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 219
NEW CINGULAR WIRELESS PCS, LLC - IL 16
ONVOY, LLC - IN 14
BANDWIDTH.COM CLEC, LLC - IN 2
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 1
INTRADO COMMUNICATIONS, LLC 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
2007-04-20 219-488-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CROWNPOINT IN
2007-04-02 219-229-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MICHIGANCY IN
2007-04-02 219-229-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MICHIGANCY IN
2007-03-30 219-750-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J MERRILLVL IN
2007-03-23 219-242-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 VALPARAISO IN
2007-03-07 219-455-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GARY IN
2007-03-07 219-455-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GARY IN
2007-03-01 219-221-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 MICHIGANCY IN
2007-03-01 219-850-1XXX 1000–1999Assigned MIDWEST TELECOM OF AMERICA, INC. - IN 919A PORTAGE IN
2007-02-28 219-331-0XXX 0000–0999Assigned METROPCS, INC. 5562 PORTAGE IN
2007-02-22 219-256-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 E CHICAGO IN
2007-02-22 219-256-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 E CHICAGO IN
2007-02-22 219-433-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GARY IN
2007-02-22 219-433-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GARY IN
2007-02-22 219-433-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GARY IN
2007-02-22 219-433-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GARY IN
2007-02-15 219-734-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 PORTAGE IN
2007-02-13 219-210-5XXX 5000–5999Assigned METROPCS, INC. 5562 MICHIGANCY IN
2007-02-06 219-707-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 VALPARAISO IN
2007-01-26 219-575-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J LA PORTE IN
2007-01-09 219-221-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J MICHIGANCY IN
2007-01-05 219-427-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GARY IN
2007-01-05 219-427-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GARY IN
2007-01-05 219-427-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GARY IN
2007-01-05 219-427-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GARY IN
2006-12-19 219-487-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GARY IN
2006-12-07 219-354-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J E CHICAGO IN
2006-12-04 219-576-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MERRILLVL IN
2006-12-04 219-576-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MERRILLVL IN
2006-12-04 219-576-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MERRILLVL IN
2006-11-30 219-427-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J GARY IN
2006-11-30 219-427-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J GARY IN
2006-11-21 219-595-4XXX 4000–4999Assigned RCN TELECOM SERVICES OF ILLINOIS, LLC 511K HIGHLAND IN
2006-11-21 219-671-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CROWNPOINT IN
2006-11-10 219-210-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 MICHIGANCY IN
2006-11-03 219-707-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J VALPARAISO IN
2006-11-03 219-803-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J HAMMOND IN
2006-11-03 219-841-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J PORTAGE IN
2006-11-02 219-575-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA PORTE IN
2006-10-10 219-208-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J REMINGTON IN
2006-10-04 219-455-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GARY IN
2006-09-21 219-595-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J HIGHLAND IN
2006-09-18 219-455-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GARY IN
2006-09-06 219-369-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA PORTE IN
2006-09-06 219-513-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J HIGHLAND IN
2006-08-31 219-488-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CROWNPOINT IN
2006-08-17 219-230-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 HAMMOND IN
2006-08-15 219-229-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MICHIGANCY IN
2006-08-14 219-455-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 GARY IN
2006-08-10 219-378-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 E CHICAGO 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.