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
2006-07-03 217-588-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 SPRINGFLD IL
2006-07-03 217-588-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 SPRINGFLD IL
2006-07-03 217-588-5XXX 5000–5999Assigned ILLINOIS BELL TEL CO 9329 SPRINGFLD IL
2006-07-03 217-588-6XXX 6000–6999Assigned ILLINOIS BELL TEL CO 9329 SPRINGFLD IL
2006-07-03 217-588-7XXX 7000–7999Assigned ILLINOIS BELL TEL CO 9329 SPRINGFLD IL
2006-06-29 217-607-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J CHAMPAURBN IL
2006-06-29 217-679-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J SPRINGFLD IL
2006-06-22 217-710-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITCHFIELD IL
2006-05-22 217-671-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LINCOLN IL
2006-05-22 217-671-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LINCOLN IL
2006-05-22 217-686-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARSHALL IL
2006-05-22 217-710-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITCHFIELD IL
2006-05-22 217-710-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITCHFIELD IL
2006-05-22 217-712-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PARIS IL
2006-05-16 217-371-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSONVL IL
2006-05-16 217-799-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DANVILLE IL
2006-05-12 217-602-0XXX 0000–0999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F JACKSONVL IL
2006-04-24 217-761-1XXX 1000–1999Assigned ILLINOIS BELL TEL CO 9329 SPRINGFLD IL
2006-04-12 217-508-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHARLESTON IL
2006-04-11 217-693-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J CHAMPAURBN IL
2006-04-11 217-693-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J CHAMPAURBN IL
2006-03-28 217-759-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 BISMARCK IL
2006-03-09 217-213-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DANVILLE IL
2006-03-07 217-213-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 DANVILLE IL
2006-03-07 217-330-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 DECATUR IL
2006-03-02 217-693-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J CHAMPAURBN IL
2006-02-17 217-215-6XXX 6000–6999Assigned MCC TELEPHONY LLC 593K RANTOUL IL
2006-02-08 217-565-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TAYLORVL IL
2006-01-19 217-690-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EFFINGHAM IL
2006-01-18 217-213-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DANVILLE IL
2006-01-13 217-706-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C DECATUR IL
2006-01-04 217-508-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHARLESTON IL
2005-11-30 217-220-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2005-11-30 217-267-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WESTVILLE IL
2005-11-29 217-548-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 FITHIAN IL
2005-11-29 217-662-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 GEORGETOWN IL
2005-11-29 217-733-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 FAIRMOUNT IL
2005-11-23 217-213-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 DANVILLE IL
2005-11-23 217-646-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PAWNEE IL
2005-11-23 217-799-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DANVILLE IL
2005-11-09 217-663-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 EFFINGHAM IL
2005-11-04 217-508-4XXX 4000–4999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F CHARLESTON IL
2005-11-04 217-690-4XXX 4000–4999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F EFFINGHAM IL
2005-11-01 217-379-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PAXTON IL
2005-09-30 217-597-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DANVILLE IL
2005-09-19 217-779-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 QUINCY IL
2005-09-19 217-779-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 QUINCY IL
2005-09-19 217-779-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 QUINCY IL
2005-08-31 217-819-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2005-08-25 217-215-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 RANTOUL 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.