NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

2 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 815
VERSATEL LLC 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 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
2014-07-07 815-456-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FRANKLIGRV IL
2014-07-07 815-493-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LANARK IL
2014-07-07 815-522-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 KIRKLAND IL
2014-07-07 815-827-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MAPLE PARK IL
2014-07-07 815-855-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MILLEDGEVL IL
2014-07-07 815-857-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J AMBOY IL
2014-07-07 815-913-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CHADWICK IL
2014-07-03 815-251-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NELSON IL
2014-06-30 815-995-5XXX 5000–5999Assigned METROPCS, INC. 5562 DE KALB IL
2014-06-30 815-995-9XXX 9000–9999Assigned METROPCS, INC. 5562 DE KALB IL
2014-06-27 815-905-5XXX 5000–5999Assigned METROPCS, INC. 5562 LOCKPORT IL
2014-06-27 815-905-6XXX 6000–6999Assigned METROPCS, INC. 5562 LOCKPORT IL
2014-06-27 815-999-6XXX 6000–6999Assigned METROPCS, INC. 5562 JOLIET IL
2014-06-25 815-421-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E HERSCHER IL
2014-06-25 815-510-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J STREATOR IL
2014-06-25 815-718-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J STERLING IL
2014-06-25 815-719-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PRINCETON IL
2014-06-25 815-888-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ROCHELLE IL
2014-06-25 815-902-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J THOMSON IL
2014-06-25 815-906-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MT CARROLL IL
2014-06-25 815-996-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SAVANNA IL
2014-06-13 815-587-7XXX 7000–7999Assigned ONVOY, LLC 224C OTTAWA IL
2014-06-13 815-617-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OTTAWA IL
2014-06-11 815-593-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DE KALB IL
2014-06-10 815-705-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J MORRIS IL
2014-06-06 815-386-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 KANKAKEE IL
2014-06-06 815-523-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 KANKAKEE IL
2014-06-06 815-687-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WOODSTOCK IL
2014-06-05 815-580-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHERRY VLY IL
2014-05-29 815-580-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHERRY VLY IL
2014-05-27 815-582-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 JOLIET IL
2014-05-07 815-242-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E MINOOKA IL
2014-05-07 815-269-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E DANFORTH IL
2014-04-30 815-201-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E SHERIDAN IL
2014-04-30 815-429-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E SHELDON IL
2014-04-30 815-769-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E SENECA IL
2014-04-29 815-216-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E KANKAKEE IL
2014-04-29 815-373-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E ELWOOD IL
2014-04-29 815-662-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E MOMENCE IL
2014-04-29 815-792-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E HARDING IL
2014-04-29 815-905-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E LOCKPORT IL
2014-04-29 815-905-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E LOCKPORT IL
2014-04-24 815-889-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E MILFORD IL
2014-04-21 815-552-8XXX 8000–8999Assigned ONVOY, LLC 224C LOCKPORT IL
2014-04-15 815-844-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PONTIAC IL
2014-04-11 815-887-6XXX 6000–6999Assigned ONVOY, LLC 224C HARVARD IL
2014-04-08 815-661-8XXX 8000–8999Assigned FIRST COMMUNICATIONS, LLC 460K MORRIS IL
2014-04-04 815-552-6XXX 6000–6999Assigned FIRST COMMUNICATIONS, LLC 460K LOCKPORT IL
2014-03-26 815-345-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 WOODSTOCK IL
2014-03-13 815-205-3XXX 3000–3999Assigned ONVOY, LLC 224C COAL CITY 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.