NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

10 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 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
2013-03-20 217-610-1XXX 1000–1999Assigned NUSO, LLC 551G SPRINGFLD IL
2013-03-14 217-264-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PARIS IL
2013-03-04 217-282-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K RANTOUL IL
2013-02-28 217-904-7XXX 7000–7999Assigned ILLINOIS BELL TEL CO 9329 CHAMPAURBN IL
2013-02-21 217-937-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CLINTON IL
2013-02-13 217-731-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CLINTON IL
2013-02-13 217-828-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 LINCOLN IL
2013-02-12 217-450-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DECATUR IL
2013-02-05 217-278-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHAMPAURBN IL
2013-02-01 217-407-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 PITTSFIELD IL
2013-01-30 217-929-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MATTOON IL
2013-01-15 217-441-2XXX 2000–2999Assigned ONVOY, LLC 224C SPRINGFLD IL
2013-01-15 217-600-2XXX 2000–2999Assigned ONVOY, LLC 224C CHAMPAURBN IL
2013-01-04 217-215-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 RANTOUL IL
2013-01-03 217-686-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 MARSHALL IL
2012-12-26 217-615-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DECATUR IL
2012-12-17 217-693-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J CHAMPAURBN IL
2012-12-05 217-204-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSONVL IL
2012-11-08 217-501-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C PETERSBURG IL
2012-10-31 217-954-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHAMPAURBN IL
2012-10-17 217-718-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SPRINGFLD IL
2012-09-04 217-569-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ARMSTRONG IL
2012-08-24 217-395-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROBERTS IL
2012-08-24 217-987-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 POTOMAC IL
2012-08-07 217-645-8XXX 8000–8999Assigned ADAMS TELSYSTEMS, INC. 7091 LIBERTY IL
2012-08-03 217-615-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DECATUR IL
2012-08-03 217-717-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SPRINGFLD IL
2012-08-03 217-866-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHAMPAURBN IL
2012-08-01 217-394-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 BUCKLEY IL
2012-08-01 217-397-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 RANKIN IL
2012-07-24 217-402-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHAMPAURBN IL
2012-07-18 217-530-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2012-07-18 217-530-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2012-07-18 217-530-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2012-07-18 217-719-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 JACKSONVL IL
2012-07-03 217-503-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD IL
2012-07-03 217-503-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD IL
2012-07-02 217-918-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DANVILLE IL
2012-07-02 217-919-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 QUINCY IL
2012-06-26 217-607-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2012-06-21 217-607-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHAMPAURBN IL
2012-06-21 217-706-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DECATUR IL
2012-06-18 217-512-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHARLESTON IL
2012-06-18 217-814-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 SPRINGFLD IL
2012-06-18 217-814-5XXX 5000–5999Assigned ILLINOIS BELL TEL CO 9329 SPRINGFLD IL
2012-06-15 217-372-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHAMPAURBN IL
2012-06-15 217-372-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHAMPAURBN IL
2012-06-12 217-666-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WEST DANA IL
2012-06-07 217-490-3XXX 3000–3999Assigned UNITED STATES CELLULAR - IL 6265 JACKSONVL IL
2012-05-18 217-314-8XXX 8000–8999Assigned METROPCS, INC. 5562 LINCOLN IL

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.