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
2010-07-01 217-933-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F HUMBOLDT IL
2010-07-01 217-994-9XXX 9000–9999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F EFFINGHAM IL
2010-06-30 217-551-2XXX 2000–2999Assigned MCC TELEPHONY LLC 593K HAMILTON IL
2010-06-30 217-609-0XXX 0000–0999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F CASEY IL
2010-06-30 217-849-0XXX 0000–0999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F TOLEDO IL
2010-06-30 217-895-0XXX 0000–0999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F NEOGA IL
2010-06-30 217-923-6XXX 6000–6999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F GREENUP IL
2010-06-30 217-948-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F KANSAS IL
2010-06-30 217-966-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K LOMAX IL
2010-06-30 217-967-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F WESTFIELD IL
2010-06-30 217-980-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K NAUVOO IL
2010-06-30 217-989-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K DALLASCITY IL
2010-06-25 217-295-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F MATTOON IL
2010-06-25 217-402-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHAMPAURBN IL
2010-06-18 217-220-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2010-06-10 217-419-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHAMPAURBN IL
2010-06-10 217-491-8XXX 8000–8999Assigned UNITED STATES CELLULAR - IL 6265 JACKSONVL IL
2010-06-10 217-955-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K GREENVIEW IL
2010-06-04 217-460-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MATTOON IL
2010-06-04 217-517-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 JACKSONVL IL
2010-06-01 217-219-4XXX 4000–4999Assigned MCC TELEPHONY LLC 593K CARTHAGE IL
2010-05-27 217-918-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DANVILLE IL
2010-05-21 217-303-7XXX 7000–7999Assigned MCC TELEPHONY LLC 593K SPRINGFLD IL
2010-05-21 217-364-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K BUFFALO IL
2010-05-21 217-471-0XXX 0000–0999Assigned MCC TELEPHONY LLC 593K ROCHESTER IL
2010-05-21 217-472-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F CHAPIN IL
2010-05-21 217-487-3XXX 3000–3999Assigned MCC TELEPHONY LLC 593K CANTRALL IL
2010-05-21 217-488-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K NEW BERLIN IL
2010-05-21 217-624-0XXX 0000–0999Assigned MCC TELEPHONY LLC 593K LOAMI IL
2010-05-21 217-673-2XXX 2000–2999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F WOODSON IL
2010-05-21 217-685-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SPRINGFLD IL
2010-05-21 217-685-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SPRINGFLD IL
2010-05-20 217-329-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DECATUR IL
2010-05-20 217-994-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 EFFINGHAM IL
2010-05-07 217-866-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHAMPAURBN IL
2010-04-23 217-329-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DECATUR IL
2010-04-23 217-480-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHAMPAURBN IL
2010-04-23 217-480-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHAMPAURBN IL
2010-04-23 217-480-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHAMPAURBN IL
2010-04-23 217-505-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K WARSAW IL
2010-03-25 217-271-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F JACKSONVL IL
2010-03-24 217-293-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F MARSHALL IL
2010-03-24 217-303-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SPRINGFLD IL
2010-03-22 217-592-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 QUINCY IL
2010-02-22 217-685-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD IL
2010-02-04 217-514-9XXX 9000–9999Assigned MCC TELEPHONY LLC 593K MT AUBURN IL
2010-01-28 217-264-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PARIS IL
2010-01-28 217-329-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DECATUR IL
2010-01-28 217-685-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SPRINGFLD IL
2010-01-28 217-685-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SPRINGFLD 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.