NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

11 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 309
VERSATEL LLC 2
EXIANT COMMUNICATIONS LLC 2
BANDWIDTH.COM CLEC, LLC - IL 2
AHOI LLC 2
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
2010-06-30 309-997-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K GOOD HOPE IL
2010-06-29 309-336-5XXX 5000–5999Assigned FRONTIER NORTH, INC. - IL 1015 BLOOMINGTN IL
2010-06-29 309-336-6XXX 6000–6999Assigned FRONTIER NORTH, INC. - IL 1015 BLOOMINGTN IL
2010-06-17 309-989-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PEORIA IL
2010-06-17 309-989-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PEORIA IL
2010-06-11 309-210-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PEORIA IL
2010-06-11 309-210-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PEORIA IL
2010-06-11 309-210-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PEORIA IL
2010-06-11 309-210-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PEORIA IL
2010-06-11 309-428-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ROCKISLAND IL
2010-06-11 309-428-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ROCKISLAND IL
2010-06-07 309-262-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 BLOOMINGTN IL
2010-06-07 309-602-1XXX 1000–1999Assigned ONVOY, LLC 224C SHERRARD IL
2010-05-27 309-669-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PEORIA IL
2010-05-21 309-613-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PEKIN IL
2010-05-21 309-613-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PEKIN IL
2010-05-21 309-840-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SOUTHPEKIN IL
2010-05-20 309-351-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 GALESBURG IL
2010-05-20 309-775-0XXX 0000–0999Assigned MCC TELEPHONY LLC 593K PRAIRIE CY IL
2010-05-20 309-973-0XXX 0000–0999Assigned MCC TELEPHONY LLC 593K GALESBURG IL
2010-05-18 309-750-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BLOOMINGTN IL
2010-04-28 309-428-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ROCKISLAND IL
2010-04-27 309-431-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PEORIA IL
2010-04-16 309-831-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 BLOOMINGTN IL
2010-04-16 309-831-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 BLOOMINGTN IL
2010-04-14 309-620-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E PEKIN IL
2010-03-25 309-932-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F GALVA IL
2010-03-22 309-281-2XXX 2000–2999Assigned ILLINOIS BELL TEL CO 9329 EASTMOLINE IL
2010-03-22 309-281-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 EASTMOLINE IL
2010-03-22 309-281-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 EASTMOLINE IL
2010-03-22 309-281-5XXX 5000–5999Assigned ILLINOIS BELL TEL CO 9329 EASTMOLINE IL
2010-03-22 309-281-6XXX 6000–6999Assigned ILLINOIS BELL TEL CO 9329 EASTMOLINE IL
2010-03-16 309-286-0XXX 0000–0999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F TOULON IL
2010-03-16 309-288-0XXX 0000–0999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F MINERAL IL
2010-03-16 309-594-0XXX 0000–0999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F NEPONSET IL
2010-03-16 309-606-9XXX 9000–9999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F WYOMING IL
2010-03-16 309-894-2XXX 2000–2999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F BUDA IL
2010-03-16 309-897-0XXX 0000–0999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F BRADFORD IL
2010-03-15 309-514-2XXX 2000–2999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F ALBANY IL
2010-03-15 309-515-9XXX 9000–9999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F ERIE IL
2010-03-15 309-551-9XXX 9000–9999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F MATHERVL IL
2010-03-15 309-552-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F ATKINSON IL
2010-03-15 309-559-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F OQUAWKA IL
2010-03-15 309-568-2XXX 2000–2999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F ANDOVER IL
2010-03-15 309-600-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F PREEMPTION IL
2010-03-15 309-626-2XXX 2000–2999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F ORION IL
2010-03-15 309-707-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F CAMBRIDGE IL
2010-03-15 309-710-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F ANNAWAN IL
2010-03-15 309-720-3XXX 3000–3999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F SHERRARD IL
2010-03-15 309-771-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F HILLSDALE 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.