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
2005-03-18 219-227-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 DYER IN
2005-03-18 219-227-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 DYER IN
2005-03-18 219-552-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 LOWELL IN
2005-03-11 219-951-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GARY IN
2005-03-03 219-750-1XXX 1000–1999Assigned MIDWEST TELECOM OF AMERICA, INC. - IN 919A MERRILLVL IN
2005-03-01 219-577-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CROWNPOINT IN
2005-03-01 219-951-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GARY IN
2005-02-28 219-364-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 WHEELER IN
2005-02-28 219-733-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 WANATAH IN
2005-02-28 219-766-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 KOUTS IN
2005-02-28 219-778-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 ROLLNGPRRI IN
2005-02-28 219-945-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 HOBART IN
2005-02-18 219-801-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 E CHICAGO IN
2005-02-18 219-973-8XXX 8000–8999Assigned METROPCS, INC. 5562 HOBART IN
2005-02-15 219-951-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GARY IN
2005-02-10 219-728-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 CHESTERTON IN
2005-02-03 219-306-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 CROWNPOINT IN
2005-02-01 219-232-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 CEDAR LAKE IN
2005-01-21 219-228-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 HAMMOND IN
2005-01-21 219-961-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 HIGHLAND IN
2005-01-06 219-728-0XXX 0000–0999Assigned ACME COMMUNICATIONS, INC. - IN 9303 CHESTERTON IN
2005-01-04 219-484-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GARY IN
2004-12-28 219-229-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MICHIGANCY IN
2004-12-27 219-202-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 WHEATFIELD IN
2004-12-27 219-207-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 REYNOLDS IN
2004-12-27 219-224-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 BROOK IN
2004-12-20 219-577-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CROWNPOINT IN
2004-12-16 219-369-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA PORTE IN
2004-12-16 219-951-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GARY IN
2004-12-15 219-810-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 GARY IN
2004-12-15 219-810-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GARY IN
2004-12-15 219-810-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 GARY IN
2004-12-15 219-810-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GARY IN
2004-12-13 219-964-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 RENSSELAER IN
2004-12-09 219-210-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MICHIGANCY IN
2004-12-08 219-232-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 CEDAR LAKE IN
2004-12-03 219-510-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 VALPARAISO IN
2004-12-02 219-801-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 E CHICAGO IN
2004-12-02 219-916-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 VALPARAISO IN
2004-11-29 219-484-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GARY IN
2004-11-10 219-810-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 GARY IN
2004-11-08 219-310-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CROWNPOINT IN
2004-10-11 219-227-7XXX 7000–7999Assigned FIRST COMMUNICATIONS, LLC 460K DYER IN
2004-10-11 219-228-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K HAMMOND IN
2004-10-11 219-232-3XXX 3000–3999Assigned FIRST COMMUNICATIONS, LLC 460K CEDAR LAKE IN
2004-10-11 219-310-3XXX 3000–3999Assigned FIRST COMMUNICATIONS, LLC 460K CROWNPOINT IN
2004-10-11 219-354-3XXX 3000–3999Assigned FIRST COMMUNICATIONS, LLC 460K E CHICAGO IN
2004-10-11 219-484-4XXX 4000–4999Assigned FIRST COMMUNICATIONS, LLC 460K GARY IN
2004-10-11 219-513-7XXX 7000–7999Assigned FIRST COMMUNICATIONS, LLC 460K HIGHLAND IN
2004-10-11 219-552-6XXX 6000–6999Assigned FIRST COMMUNICATIONS, LLC 460K LOWELL 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.