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
2004-01-28 219-575-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA PORTE IN
2004-01-16 219-310-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CROWNPOINT IN
2004-01-13 219-232-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 CEDAR LAKE IN
2004-01-12 219-880-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GARY IN
2004-01-05 219-512-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GARY IN
2004-01-05 219-545-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GARY IN
2004-01-05 219-880-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GARY IN
2003-12-22 219-552-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 LOWELL IN
2003-12-12 219-561-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MICHIGANCY IN
2003-12-03 219-381-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MERRILLVL IN
2003-12-03 219-381-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MERRILLVL IN
2003-12-03 219-381-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MERRILLVL IN
2003-12-03 219-381-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MERRILLVL IN
2003-12-03 219-381-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MERRILLVL IN
2003-12-03 219-381-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MERRILLVL IN
2003-12-03 219-381-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MERRILLVL IN
2003-12-03 219-381-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MERRILLVL IN
2003-11-25 219-613-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CROWNPOINT IN
2003-11-21 219-561-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MICHIGANCY IN
2003-11-21 219-561-5XXX 5000–5999Assigned METROPCS, INC. 5562 MICHIGANCY IN
2003-11-04 219-512-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GARY IN
2003-10-30 219-393-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA PORTE IN
2003-10-28 219-545-9XXX 9000–9999Assigned METROPCS, INC. 5562 GARY IN
2003-10-28 219-916-4XXX 4000–4999Assigned METROPCS, INC. 5562 VALPARAISO IN
2003-10-09 219-306-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CROWNPOINT IN
2003-09-05 219-545-7XXX 7000–7999Assigned METROPCS, INC. 5562 GARY IN
2003-09-05 219-545-8XXX 8000–8999Assigned METROPCS, INC. 5562 GARY IN
2003-09-03 219-916-3XXX 3000–3999Assigned METROPCS, INC. 5562 VALPARAISO IN
2003-08-28 219-558-8XXX 8000–8999Assigned INDIANA BELL TEL CO INC 9325 ST JOHN IN
2003-07-25 219-227-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 DYER IN
2003-07-25 219-801-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 E CHICAGO IN
2003-07-21 219-512-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 GARY IN
2003-07-14 219-545-5XXX 5000–5999Assigned METROPCS, INC. 5562 GARY IN
2003-06-05 219-221-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 MICHIGANCY IN
2003-05-28 219-210-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MICHIGANCY IN
2003-05-13 219-306-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CROWNPOINT IN
2003-05-13 219-306-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CROWNPOINT IN
2003-05-09 219-369-0XXX 0000–0999Assigned ACME COMMUNICATIONS, INC. - IN 9303 LA PORTE IN
2003-05-09 219-734-0XXX 0000–0999Assigned ACME COMMUNICATIONS, INC. - IN 9303 PORTAGE IN
2003-05-08 219-561-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MICHIGANCY IN
2003-05-07 219-512-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GARY IN
2003-04-22 219-552-4XXX 4000–4999Assigned METROPCS, INC. 5562 LOWELL IN
2003-03-07 219-964-1XXX 1000–1999Assigned METROPCS, INC. 5562 RENSSELAER IN
2003-03-06 219-512-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 GARY IN
2003-02-27 219-306-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 CROWNPOINT IN
2003-02-27 219-841-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 PORTAGE IN
2003-02-19 219-512-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GARY IN
2003-01-23 219-545-1XXX 1000–1999Assigned METROPCS, INC. 5562 GARY IN
2003-01-23 219-545-2XXX 2000–2999Assigned METROPCS, INC. 5562 GARY IN
2003-01-23 219-545-3XXX 3000–3999Assigned METROPCS, INC. 5562 GARY 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.