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
2011-05-12 217-662-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 GEORGETOWN IL
2011-05-11 217-408-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 JACKSONVL IL
2011-05-06 217-209-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J QUINCY IL
2011-05-06 217-330-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DECATUR IL
2011-04-19 217-954-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J CHAMPAURBN IL
2011-04-19 217-954-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J CHAMPAURBN IL
2011-04-12 217-361-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD IL
2011-04-08 217-577-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 QUINCY IL
2011-04-04 217-269-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CHRISMAN IL
2011-04-04 217-516-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DANVILLE IL
2011-03-28 217-303-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD IL
2011-03-25 217-686-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - IL 259E MARSHALL IL
2011-03-25 217-686-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. - IL 259E MARSHALL IL
2011-03-25 217-921-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - IL 259E PARIS IL
2011-03-25 217-921-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - IL 259E PARIS IL
2011-03-24 217-219-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CARTHAGE IL
2011-03-23 217-719-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 JACKSONVL IL
2011-03-16 217-427-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CATLIN IL
2011-03-10 217-343-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EFFINGHAM IL
2011-02-24 217-550-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2011-02-24 217-550-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2011-02-24 217-550-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2011-02-24 217-550-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2011-02-24 217-597-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DANVILLE IL
2011-02-24 217-597-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DANVILLE IL
2011-02-24 217-775-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 DECATUR IL
2011-02-24 217-775-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 DECATUR IL
2011-02-24 217-775-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DECATUR IL
2011-02-18 217-298-0XXX 0000–0999Assigned ONVOY, LLC 224C CHAMPAURBN IL
2011-02-10 217-775-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DECATUR IL
2011-02-10 217-775-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DECATUR IL
2011-02-02 217-206-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SPRINGFLD IL
2011-01-31 217-329-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DECATUR IL
2011-01-28 217-717-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2011-01-28 217-717-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2011-01-28 217-717-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2011-01-28 217-979-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHAMPAURBN IL
2011-01-27 217-204-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSONVL IL
2011-01-18 217-481-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD IL
2011-01-11 217-240-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 EFFINGHAM IL
2011-01-07 217-278-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHAMPAURBN IL
2011-01-07 217-717-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SPRINGFLD IL
2011-01-06 217-450-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DECATUR IL
2011-01-06 217-823-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TAYLORVL IL
2010-12-29 217-219-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CARTHAGE IL
2010-12-28 217-670-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SPRINGFLD IL
2010-12-23 217-274-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DANVILLE IL
2010-12-16 217-255-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHAMPAURBN IL
2010-12-08 217-203-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C BUFFALO IL
2010-12-08 217-313-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITCHFIELD 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.