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
2010-01-26 217-579-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K PAXTON IL
2010-01-26 217-599-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K TUSCOLA IL
2010-01-26 217-681-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K VILLAGROVE IL
2010-01-21 217-262-2XXX 2000–2999Assigned MCC TELEPHONY LLC 593K HAMMOND IL
2010-01-21 217-307-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F WAYNESVL IL
2010-01-21 217-308-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F ATLANTA IL
2010-01-21 217-376-0XXX 0000–0999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F EMDEN IL
2010-01-21 217-386-3XXX 3000–3999Assigned MCC TELEPHONY LLC 593K LODA IL
2010-01-21 217-388-3XXX 3000–3999Assigned MCC TELEPHONY LLC 593K MELVIN IL
2010-01-21 217-396-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K LUDLOW IL
2010-01-21 217-445-0XXX 0000–0999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F MDLTNNWHLD IL
2010-01-21 217-485-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K TOLONO IL
2010-01-21 217-489-6XXX 6000–6999Assigned MCC TELEPHONY LLC 593K MANSFIELD IL
2010-01-21 217-513-0XXX 0000–0999Assigned MCC TELEPHONY LLC 593K DE LAND IL
2010-01-21 217-564-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K IVESDALE IL
2010-01-21 217-568-2XXX 2000–2999Assigned MCC TELEPHONY LLC 593K GIFFORD IL
2010-01-21 217-570-0XXX 0000–0999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F CLINTON IL
2010-01-21 217-590-0XXX 0000–0999Assigned MCC TELEPHONY LLC 593K MAHOMET IL
2010-01-21 217-631-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K MONTICELLO IL
2010-01-21 217-633-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F HARTSBURG IL
2010-01-21 217-643-3XXX 3000–3999Assigned MCC TELEPHONY LLC 593K THOMASBORO IL
2010-01-21 217-678-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K BEMENT IL
2010-01-21 217-727-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K GIBSONCITY IL
2010-01-21 217-736-3XXX 3000–3999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F WELDON IL
2010-01-21 217-763-0XXX 0000–0999Assigned MCC TELEPHONY LLC 593K CERROGORDO IL
2010-01-21 217-867-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K PESOTUM IL
2010-01-21 217-878-0XXX 0000–0999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F ELKHART IL
2010-01-21 217-897-0XXX 0000–0999Assigned MCC TELEPHONY LLC 593K FISHER IL
2010-01-20 217-772-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOOPESTON IL
2010-01-11 217-282-9XXX 9000–9999Assigned MCC TELEPHONY LLC 593K RANTOUL IL
2010-01-11 217-292-9XXX 9000–9999Assigned MCC TELEPHONY LLC 593K SULLIVAN IL
2010-01-11 217-570-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 CLINTON IL
2010-01-07 217-372-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHAMPAURBN IL
2010-01-07 217-994-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 EFFINGHAM IL
2009-12-22 217-471-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 ROCHESTER IL
2009-12-22 217-680-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 GIBSONCITY IL
2009-12-18 217-358-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DECATUR IL
2009-12-07 217-393-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C CATLIN IL
2009-12-07 217-952-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C ATHENS IL
2009-11-19 217-516-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DANVILLE IL
2009-11-10 217-361-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD IL
2009-10-23 217-710-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITCHFIELD IL
2009-09-28 217-550-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2009-09-28 217-550-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2009-09-08 217-372-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHAMPAURBN IL
2009-09-08 217-619-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DECATUR IL
2009-09-04 217-418-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHAMPAURBN IL
2009-08-10 217-372-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHAMPAURBN IL
2009-08-06 217-994-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 EFFINGHAM IL
2009-07-17 217-751-0XXX 0000–0999Assigned ONVOY, LLC 224C CHAMPAURBN 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.