NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

34 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 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
2004-10-11 219-558-3XXX 3000–3999Assigned FIRST COMMUNICATIONS, LLC 460K ST JOHN IN
2004-10-11 219-576-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K MERRILLVL IN
2004-10-11 219-655-6XXX 6000–6999Assigned FIRST COMMUNICATIONS, LLC 460K WHITING IN
2004-09-03 219-306-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CROWNPOINT IN
2004-08-18 219-484-3XXX 3000–3999Assigned METROPCS, INC. 5562 GARY IN
2004-08-02 219-228-6XXX 6000–6999Assigned RCN TELECOM SERVICES OF ILLINOIS, LLC 511K HAMMOND IN
2004-08-02 219-655-4XXX 4000–4999Assigned RCN TELECOM SERVICES OF ILLINOIS, LLC 511K WHITING IN
2004-08-02 219-961-6XXX 6000–6999Assigned RCN TELECOM SERVICES OF ILLINOIS, LLC 511K HIGHLAND IN
2004-07-30 219-484-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GARY IN
2004-07-26 219-308-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CROWNPOINT IN
2004-07-23 219-552-5XXX 5000–5999Assigned METROPCS, INC. 5562 LOWELL IN
2004-07-22 219-476-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 VALPARAISO IN
2004-07-22 219-510-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 VALPARAISO IN
2004-07-13 219-379-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LA PORTE IN
2004-07-13 219-869-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 RENSSELAER IN
2004-07-09 219-506-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K MOROCCO IN
2004-07-09 219-992-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K LAKE VLG IN
2004-07-06 219-309-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 VALPARAISO IN
2004-07-06 219-309-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 VALPARAISO IN
2004-07-06 219-510-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 VALPARAISO IN
2004-06-21 219-767-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 UNIONMILLS IN
2004-06-21 219-785-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 WESTVILLE IN
2004-06-21 219-797-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 HANNA IN
2004-05-18 219-916-5XXX 5000–5999Assigned METROPCS, INC. 5562 VALPARAISO IN
2004-05-12 219-964-8XXX 8000–8999Assigned METROPCS, INC. 5562 RENSSELAER IN
2004-05-12 219-964-9XXX 9000–9999Assigned METROPCS, INC. 5562 RENSSELAER IN
2004-04-29 219-227-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 DYER IN
2004-04-29 219-228-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 HAMMOND IN
2004-04-29 219-310-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 CROWNPOINT IN
2004-04-29 219-354-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 E CHICAGO IN
2004-04-29 219-472-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 MERRILLVL IN
2004-04-29 219-484-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 GARY IN
2004-04-29 219-513-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 HIGHLAND IN
2004-04-28 219-915-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 REMINGTON IN
2004-03-31 219-331-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PORTAGE IN
2004-03-31 219-484-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GARY IN
2004-03-24 219-210-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MICHIGANCY IN
2004-03-24 219-210-9XXX 9000–9999Assigned METROPCS, INC. 5562 MICHIGANCY IN
2004-03-22 219-309-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 VALPARAISO IN
2004-03-22 219-309-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 VALPARAISO IN
2004-03-18 219-472-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 MERRILLVL IN
2004-03-12 219-220-0XXX 0000–0999Assigned FBN INDIANA, INC. - IN 4117 REYNOLDS IN
2004-03-12 219-330-0XXX 0000–0999Assigned FBN INDIANA, INC. - IN 4117 SAN PIERRE IN
2004-03-12 219-335-0XXX 0000–0999Assigned FBN INDIANA, INC. - IN 4117 FRANCESVL IN
2004-03-02 219-939-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GARY IN
2004-02-25 219-964-2XXX 2000–2999Assigned FBN INDIANA, INC. - IN 4117 RENSSELAER IN
2004-02-24 219-202-0XXX 0000–0999Assigned FBN INDIANA, INC. - IN 4117 WHEATFIELD IN
2004-02-24 219-306-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CROWNPOINT IN
2004-01-29 219-309-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 VALPARAISO IN
2004-01-29 219-981-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GARY 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.