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
2012-05-10 217-503-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD IL
2012-04-26 217-706-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DECATUR IL
2012-04-24 217-503-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD IL
2012-04-11 217-550-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2012-04-11 217-550-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2012-04-11 217-550-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2012-03-30 217-413-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DECATUR IL
2012-03-30 217-516-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DANVILLE IL
2012-03-01 217-209-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 QUINCY IL
2012-03-01 217-281-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHAMPAURBN IL
2012-02-29 217-650-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ATLANTA IL
2012-02-28 217-597-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DANVILLE IL
2012-02-24 217-851-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITCHFIELD IL
2012-02-15 217-636-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ATHENS IL
2012-02-10 217-481-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD IL
2012-01-27 217-878-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ELKHART IL
2012-01-20 217-751-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHAMPAURBN IL
2012-01-12 217-480-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J CHAMPAURBN IL
2012-01-12 217-560-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J CHAMPAURBN IL
2012-01-12 217-560-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J CHAMPAURBN IL
2012-01-12 217-903-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J CHAMPAURBN IL
2012-01-12 217-954-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHAMPAURBN IL
2012-01-12 217-954-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHAMPAURBN IL
2012-01-12 217-954-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHAMPAURBN IL
2012-01-11 217-717-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SPRINGFLD IL
2012-01-11 217-751-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J CHAMPAURBN IL
2012-01-11 217-974-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J CHAMPAURBN IL
2012-01-11 217-974-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J CHAMPAURBN IL
2012-01-09 217-413-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DECATUR IL
2011-12-14 217-504-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DANVILLE IL
2011-12-08 217-718-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SPRINGFLD IL
2011-12-07 217-209-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 QUINCY IL
2011-12-07 217-331-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD IL
2011-12-07 217-903-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHAMPAURBN IL
2011-12-06 217-300-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHAMPAURBN IL
2011-12-06 217-300-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHAMPAURBN IL
2011-12-06 217-300-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHAMPAURBN IL
2011-12-06 217-300-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHAMPAURBN IL
2011-12-06 217-300-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHAMPAURBN IL
2011-12-06 217-300-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHAMPAURBN IL
2011-12-06 217-300-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHAMPAURBN IL
2011-12-06 217-300-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHAMPAURBN IL
2011-12-06 217-300-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHAMPAURBN IL
2011-12-06 217-300-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHAMPAURBN IL
2011-11-08 217-215-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 RANTOUL IL
2011-10-24 217-207-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C ST JOSEPH IL
2011-10-18 217-267-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C WESTVILLE IL
2011-10-18 217-354-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C OAKWOOD IL
2011-10-13 217-662-0XXX 0000–0999Assigned AT&T ENTERPRISES, LLC 516C GEORGETOWN IL
2011-10-13 217-680-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C GIBSONCITY 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.