NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

10 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 217
ONVOY, LLC 3
NEW CINGULAR WIRELESS PCS, LLC - IL 3
EXIANT COMMUNICATIONS LLC 3
OPENTACT INC. 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
2005-07-20 217-218-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHARLESTON IL
2005-07-20 217-218-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHARLESTON IL
2005-07-20 217-218-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHARLESTON IL
2005-07-20 217-218-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHARLESTON IL
2005-07-20 217-218-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHARLESTON IL
2005-07-20 217-218-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHARLESTON IL
2005-07-20 217-218-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHARLESTON IL
2005-07-20 217-218-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHARLESTON IL
2005-06-29 217-218-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHARLESTON IL
2005-06-29 217-663-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 EFFINGHAM IL
2005-05-23 217-713-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 TAYLORVL IL
2005-05-23 217-929-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 MATTOON IL
2005-05-19 217-663-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 EFFINGHAM IL
2005-05-09 217-320-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSONVL IL
2005-05-09 217-320-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSONVL IL
2005-04-19 217-552-1XXX 1000–1999Assigned AT&T ENTERPRISES, LLC 516C CHAMPAURBN IL
2005-04-19 217-572-1XXX 1000–1999Assigned AT&T ENTERPRISES, LLC 516C SPRINGFLD IL
2005-04-11 217-317-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MATTOON IL
2005-04-04 217-320-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSONVL IL
2005-04-04 217-320-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSONVL IL
2005-03-18 217-565-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TAYLORVL IL
2005-03-02 217-220-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2005-02-24 217-334-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 COLUMBUS IL
2005-02-24 217-396-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LUDLOW IL
2005-02-24 217-427-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CATLIN IL
2005-02-24 217-434-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 FOWLER IL
2005-02-24 217-568-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 GIFFORD IL
2005-02-24 217-582-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 OGDEN IL
2005-02-24 217-583-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROYAL IL
2005-02-24 217-595-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PENFIELD IL
2005-02-24 217-626-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PLEASANTPL IL
2005-02-24 217-633-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 HARTSBURG IL
2005-02-24 217-643-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 THOMASBORO IL
2005-02-24 217-645-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LIBERTY IL
2005-02-24 217-656-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PAYSON IL
2005-02-24 217-694-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 FLATVILLE IL
2005-02-24 217-885-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 BURTON IL
2005-02-18 217-663-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 EFFINGHAM IL
2005-02-17 217-808-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARSHALL IL
2005-02-17 217-808-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARSHALL IL
2005-02-17 217-808-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARSHALL IL
2005-02-15 217-320-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSONVL IL
2005-02-12 217-819-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2005-02-03 217-236-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PERRY IL
2005-02-03 217-530-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2005-02-03 217-530-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2005-01-26 217-799-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DANVILLE IL
2005-01-26 217-799-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DANVILLE IL
2005-01-18 217-374-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WHITE HALL IL
2005-01-18 217-650-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ATLANTA IL

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.