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
2003-01-23 219-545-4XXX 4000–4999Assigned METROPCS, INC. 5562 GARY IN
2003-01-23 219-916-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 VALPARAISO IN
2002-12-19 219-228-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 HAMMOND IN
2002-12-19 219-809-0XXX 0000–0999Assigned ACME COMMUNICATIONS, INC. - IN 9303 MICHIGANCY IN
2002-10-31 219-229-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MICHIGANCY IN
2002-10-31 219-588-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 GARY IN
2002-10-31 219-588-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GARY IN
2002-10-31 219-588-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GARY IN
2002-10-31 219-588-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GARY IN
2002-06-20 219-369-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 LA PORTE IN
2002-06-20 219-476-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 VALPARAISO IN
2002-06-19 219-990-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 REMINGTON IN
2002-04-17 219-354-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K E CHICAGO IN
2002-04-17 219-390-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K CEDAR LAKE IN
2002-04-17 219-558-2XXX 2000–2999Assigned INDIANA BELL TEL CO INC 9325 ST JOHN IN
2002-04-17 219-697-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 MOROCCO IN
2002-04-17 219-961-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 HIGHLAND IN
2002-04-12 219-558-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K ST JOHN IN
2002-03-14 219-226-7XXX 7000–7999Assigned FIRST COMMUNICATIONS, LLC 460K CROWNPOINT IN
2002-03-14 219-381-3XXX 3000–3999Assigned FIRST COMMUNICATIONS, LLC 460K MERRILLVL IN
2002-03-14 219-512-1XXX 1000–1999Assigned FIRST COMMUNICATIONS, LLC 460K GARY IN
2002-03-14 219-552-3XXX 3000–3999Assigned FIRST COMMUNICATIONS, LLC 460K LOWELL IN
2002-03-14 219-655-1XXX 1000–1999Assigned FIRST COMMUNICATIONS, LLC 460K WHITING IN
2002-03-14 219-864-6XXX 6000–6999Assigned FIRST COMMUNICATIONS, LLC 460K DYER IN
2002-03-14 219-961-1XXX 1000–1999Assigned FIRST COMMUNICATIONS, LLC 460K HIGHLAND IN
2002-03-06 219-381-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 MERRILLVL 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.