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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2016-07-19 815-375-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J DE KALB IL
2016-07-13 815-995-8XXX 8000–8999Assigned METROPCS, INC. 5562 DE KALB IL
2016-07-11 815-660-8XXX 8000–8999Assigned IP HORIZON LLC 515J LOCKPORT IL
2016-07-05 815-379-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WALNUT IL
2016-07-05 815-628-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J W BROOKLYN IL
2016-07-05 815-699-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WYANET IL
2016-07-01 815-437-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PUTNAM IL
2016-07-01 815-454-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SHEFFIELD IL
2016-07-01 815-646-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TISKILWA IL
2016-06-30 815-340-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LA MOILLE IL
2016-06-30 815-376-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OHIO IL
2016-06-30 815-615-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MENDOTA IL
2016-06-30 815-799-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MANLIUS IL
2016-06-29 815-643-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DOVER IL
2016-06-29 815-894-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LADD IL
2016-06-29 815-925-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HENNEPIN IL
2016-06-28 815-497-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J COMPTON IL
2016-06-28 815-760-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BUREAU IL
2016-06-24 815-208-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 FULTON IL
2016-06-21 815-242-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E MINOOKA IL
2016-06-14 815-710-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MORRIS IL
2016-06-14 815-710-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MORRIS IL
2016-05-24 815-201-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SHERIDAN IL
2016-05-20 815-552-9XXX 9000–9999Assigned ONVOY, LLC 224C LOCKPORT IL
2016-05-13 815-205-4XXX 4000–4999Assigned ONVOY, LLC 224C COAL CITY IL
2016-05-13 815-205-5XXX 5000–5999Assigned ONVOY, LLC 224C COAL CITY IL
2016-05-05 815-322-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J MCHENRY IL
2016-05-04 815-688-4XXX 4000–4999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F STRAWN IL
2016-05-04 815-863-6XXX 6000–6999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F RUTLAND IL
2016-04-27 815-822-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 STREATOR IL
2016-04-19 815-640-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 OTTAWA IL
2016-04-19 815-905-4XXX 4000–4999Assigned METROPCS, INC. 5562 LOCKPORT IL
2016-04-01 815-860-1XXX 1000–1999Assigned ONVOY, LLC 224C ELWOOD IL
2016-04-01 815-860-2XXX 2000–2999Assigned ONVOY, LLC 224C ELWOOD IL
2016-03-21 815-213-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 STERLING IL
2016-03-21 815-510-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 STREATOR IL
2016-03-21 815-884-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EARLVILLE IL
2016-03-18 815-683-7XXX 7000–7999Assigned ONVOY, LLC 224C CRESCENTCY IL
2016-03-18 815-783-5XXX 5000–5999Assigned ONVOY, LLC 224C GILMAN IL
2016-03-18 815-783-6XXX 6000–6999Assigned ONVOY, LLC 224C GILMAN IL
2016-03-17 815-421-1XXX 1000–1999Assigned ONVOY, LLC 224C HERSCHER IL
2016-03-17 815-426-9XXX 9000–9999Assigned ONVOY, LLC 224C HERSCHER IL
2016-03-17 815-427-1XXX 1000–1999Assigned ONVOY, LLC 224C ST ANNE IL
2016-03-17 815-427-4XXX 4000–4999Assigned ONVOY, LLC 224C ST ANNE IL
2016-03-17 815-736-0XXX 0000–0999Assigned ONVOY, LLC 224C LISBON IL
2016-03-17 815-736-9XXX 9000–9999Assigned ONVOY, LLC 224C LISBON IL
2016-03-17 815-792-2XXX 2000–2999Assigned ONVOY, LLC 224C HARDING IL
2016-03-16 815-584-0XXX 0000–0999Assigned ONVOY, LLC 224C DWIGHT IL
2016-03-16 815-940-2XXX 2000–2999Assigned ONVOY, LLC 224C GARDNER IL
2016-03-16 815-940-3XXX 3000–3999Assigned ONVOY, LLC 224C GARDNER 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.