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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2005-01-18 217-668-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 NIANTIC IL
2005-01-18 217-672-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WARRENSBG IL
2005-01-18 217-724-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROODHOUSE IL
2005-01-18 217-728-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SULLIVAN IL
2005-01-18 217-742-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WINCHESTER IL
2005-01-18 217-754-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 BLUFFS IL
2005-01-18 217-764-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MACON IL
2005-01-18 217-864-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MOUNT ZION IL
2005-01-14 217-721-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2005-01-13 217-508-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHARLESTON IL
2005-01-11 217-718-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SPRINGFLD IL
2005-01-04 217-253-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 TUSCOLA IL
2004-12-15 217-750-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LINCOLN IL
2004-12-07 217-686-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARSHALL IL
2004-12-01 217-903-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHAMPAURBN IL
2004-11-24 217-504-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DANVILLE IL
2004-11-24 217-504-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DANVILLE IL
2004-11-24 217-504-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DANVILLE IL
2004-11-23 217-506-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 QUINCY IL
2004-11-11 217-934-4XXX 4000–4999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F CLINTON IL
2004-11-04 217-721-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2004-11-01 217-590-4XXX 4000–4999Assigned MCC TELEPHONY LLC 593K MAHOMET IL
2004-10-08 217-772-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 HOOPESTON IL
2004-09-23 217-402-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2004-09-23 217-721-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2004-08-22 217-617-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IL 6265 QUINCY IL
2004-08-22 217-617-1XXX 1000–1999Assigned UNITED STATES CELLULAR - IL 6265 QUINCY IL
2004-08-22 217-617-2XXX 2000–2999Assigned UNITED STATES CELLULAR - IL 6265 QUINCY IL
2004-08-22 217-617-3XXX 3000–3999Assigned UNITED STATES CELLULAR - IL 6265 QUINCY IL
2004-08-22 217-617-5XXX 5000–5999Assigned UNITED STATES CELLULAR - IL 6265 QUINCY IL
2004-08-22 217-617-6XXX 6000–6999Assigned UNITED STATES CELLULAR - IL 6265 QUINCY IL
2004-08-22 217-617-7XXX 7000–7999Assigned UNITED STATES CELLULAR - IL 6265 QUINCY IL
2004-08-22 217-617-8XXX 8000–8999Assigned UNITED STATES CELLULAR - IL 6265 QUINCY IL
2004-08-22 217-617-9XXX 9000–9999Assigned UNITED STATES CELLULAR - IL 6265 QUINCY IL
2004-08-13 217-772-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOOPESTON IL
2004-08-13 217-849-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TOLEDO IL
2004-08-13 217-895-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEOGA IL
2004-08-13 217-923-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREENUP IL
2004-07-22 217-663-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 EFFINGHAM IL
2004-07-07 217-565-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TAYLORVL IL
2004-06-24 217-530-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2004-06-24 217-530-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2004-06-22 217-247-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 RIDGE FARM IL
2004-06-22 217-267-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WESTVILLE IL
2004-06-22 217-279-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WEST UNION IL
2004-06-22 217-284-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 INDIANOLA IL
2004-06-22 217-354-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 OAKWOOD IL
2004-06-22 217-469-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ST JOSEPH IL
2004-06-22 217-488-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 NEW BERLIN IL
2004-06-22 217-496-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SHERMAN 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.