NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

10 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

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
2014-07-10 217-376-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J EMDEN IL
2014-07-10 217-410-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BEASON IL
2014-07-10 217-445-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MDLTNNWHLD IL
2014-07-10 217-448-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NIOTA IL
2014-07-10 217-570-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CLINTON IL
2014-07-10 217-633-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HARTSBURG IL
2014-07-10 217-658-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SUTTER IL
2014-07-10 217-736-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WELDON IL
2014-07-10 217-743-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BASCO IL
2014-07-10 217-842-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BOWEN IL
2014-07-10 217-845-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ELVASTON IL
2014-07-10 217-878-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ELKHART IL
2014-07-10 217-941-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J KENNEY IL
2014-07-01 217-717-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SPRINGFLD IL
2014-06-25 217-219-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CARTHAGE IL
2014-06-25 217-505-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WARSAW IL
2014-06-25 217-551-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HAMILTON IL
2014-06-25 217-746-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FERRIS IL
2014-06-25 217-980-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 NAUVOO IL
2014-06-25 217-989-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DALLASCITY IL
2014-06-10 217-210-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C SPRINGFLD IL
2014-05-30 217-666-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WEST DANA IL
2014-05-27 217-512-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHARLESTON IL
2014-05-22 217-281-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHAMPAURBN IL
2014-05-01 217-331-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 SPRINGFLD IL
2014-04-17 217-666-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WEST DANA IL
2014-04-08 217-318-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHAMPAURBN IL
2014-04-04 217-506-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 QUINCY IL
2014-03-31 217-651-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LINCOLN IL
2014-03-17 217-953-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2014-03-17 217-953-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2014-03-17 217-953-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2014-03-17 217-953-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2014-03-14 217-666-8XXX 8000–8999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E WEST DANA IL
2014-03-12 217-706-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 DECATUR IL
2014-03-12 217-848-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DECATUR IL
2014-03-10 217-461-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSONVL IL
2014-03-05 217-209-9XXX 9000–9999Assigned UNITED STATES CELLULAR - IL 6265 QUINCY IL
2014-02-28 217-904-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2014-02-28 217-904-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2014-02-28 217-904-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2014-02-28 217-904-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2014-02-26 217-542-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J DECATUR IL
2014-02-14 217-707-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 TAYLORVL IL
2014-02-06 217-919-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 QUINCY IL
2014-01-30 217-761-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2014-01-30 217-761-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2014-01-14 217-579-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PAXTON IL
2014-01-06 217-993-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 SPRINGFLD IL
2013-12-31 217-402-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 CHAMPAURBN IL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.