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
2009-07-07 217-372-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHAMPAURBN IL
2009-06-15 217-303-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD IL
2009-06-11 217-880-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 BROCTON IL
2009-04-03 217-931-0XXX 0000–0999Assigned ONVOY, LLC 224C SPRINGFLD IL
2009-03-26 217-225-7XXX 7000–7999Assigned ADAMS TELSYSTEMS, INC. 7091 VERSAILLES IL
2009-03-13 217-848-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DECATUR IL
2009-03-13 217-848-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DECATUR IL
2009-03-09 217-264-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PARIS IL
2009-03-09 217-619-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DECATUR IL
2009-03-04 217-379-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PAXTON IL
2009-03-03 217-364-2XXX 2000–2999Assigned ONVOY, LLC 224C BUFFALO IL
2009-03-03 217-615-7XXX 7000–7999Assigned ONVOY, LLC 224C DECATUR IL
2009-03-03 217-706-7XXX 7000–7999Assigned ONVOY, LLC 224C DECATUR IL
2009-02-25 217-220-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2009-02-11 217-839-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 GILLESPIE IL
2009-02-09 217-303-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD IL
2009-02-03 217-848-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DECATUR IL
2009-01-14 217-828-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LINCOLN IL
2008-12-31 217-285-7XXX 7000–7999Assigned ADAMS TELSYSTEMS, INC. 7091 PITTSFIELD IL
2008-12-31 217-432-7XXX 7000–7999Assigned ADAMS TELSYSTEMS, INC. 7091 HULL IL
2008-12-17 217-508-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHARLESTON IL
2008-12-17 217-960-0XXX 0000–0999Assigned ONVOY, LLC 224C SPRINGFLD IL
2008-12-10 217-274-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C DANVILLE IL
2008-11-25 217-280-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SPRINGFLD IL
2008-11-25 217-303-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SPRINGFLD IL
2008-11-25 217-383-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHAMPAURBN IL
2008-11-25 217-495-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROSSVILLE IL
2008-11-17 217-340-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MARSHALL IL
2008-11-10 217-994-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 EFFINGHAM IL
2008-11-07 217-574-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C FAIRMOUNT IL
2008-11-07 217-576-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C ROCHESTER IL
2008-11-07 217-577-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 QUINCY IL
2008-11-04 217-358-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DECATUR IL
2008-09-19 217-833-7XXX 7000–7999Assigned ADAMS TELSYSTEMS, INC. 7091 GRIGGSVL IL
2008-09-18 217-335-8XXX 8000–8999Assigned ADAMS TELSYSTEMS, INC. 7091 BARRY IL
2008-09-18 217-584-8XXX 8000–8999Assigned ADAMS TELSYSTEMS, INC. 7091 MEREDOSIA IL
2008-09-17 217-734-7XXX 7000–7999Assigned ADAMS TELSYSTEMS, INC. 7091 PLEASANTHL IL
2008-09-17 217-754-7XXX 7000–7999Assigned ADAMS TELSYSTEMS, INC. 7091 BLUFFS IL
2008-09-12 217-274-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DANVILLE IL
2008-09-12 217-303-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD IL
2008-09-08 217-552-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHAMPAURBN IL
2008-09-08 217-552-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHAMPAURBN IL
2008-08-28 217-974-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2008-08-27 217-255-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2008-08-22 217-418-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHAMPAURBN IL
2008-08-22 217-418-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHAMPAURBN IL
2008-08-14 217-204-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSONVL IL
2008-08-14 217-204-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSONVL IL
2008-08-14 217-823-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TAYLORVL IL
2008-08-07 217-303-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD 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.