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
2017-09-06 815-270-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 ROSCOE IL
2017-08-29 815-333-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 WOODSTOCK IL
2017-08-24 815-650-6XXX 6000–6999Assigned METROPCS, INC. 5562 FREEPORT IL
2017-08-24 815-650-7XXX 7000–7999Assigned METROPCS, INC. 5562 FREEPORT IL
2017-08-24 815-982-0XXX 0000–0999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F TAMPICO IL
2017-08-07 815-650-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FREEPORT IL
2017-07-20 815-213-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 STERLING IL
2017-07-06 815-270-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 ROSCOE IL
2017-07-05 815-660-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J LOCKPORT IL
2017-06-29 815-889-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MILFORD IL
2017-06-29 815-984-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WELLINGTON IL
2017-06-20 815-648-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J HEBRON IL
2017-06-06 815-205-2XXX 2000–2999Assigned ONVOY, LLC 224C COAL CITY IL
2017-05-31 815-656-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 FREEPORT IL
2017-05-31 815-656-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 FREEPORT IL
2017-05-31 815-656-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 FREEPORT IL
2017-05-31 815-656-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 FREEPORT IL
2017-05-31 815-656-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 FREEPORT IL
2017-05-31 815-661-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MORRIS IL
2017-05-31 815-661-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MORRIS IL
2017-04-26 815-318-0XXX 0000–0999Assigned TELNYX LLC 073H MORRIS IL
2017-04-26 815-660-5XXX 5000–5999Assigned TELNYX LLC 073H LOCKPORT IL
2017-04-04 815-824-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 SHABBONA IL
2017-03-29 815-766-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2017-03-29 815-766-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2017-03-29 815-766-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2017-03-08 815-221-7XXX 7000–7999Assigned METROPCS, INC. 5562 LOCKPORT IL
2017-03-08 815-836-1XXX 1000–1999Assigned METROPCS, INC. 5562 LOCKPORT IL
2017-03-07 815-908-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FREEPORT IL
2017-02-28 815-201-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E SHERIDAN IL
2017-01-30 815-991-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SYCAMORE IL
2017-01-19 815-650-5XXX 5000–5999Assigned METROPCS, INC. 5562 FREEPORT IL
2017-01-12 815-317-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CRESCENTCY IL
2016-12-27 815-510-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 STREATOR IL
2016-12-27 815-836-4XXX 4000–4999Assigned METROPCS, INC. 5562 LOCKPORT IL
2016-12-27 815-836-6XXX 6000–6999Assigned METROPCS, INC. 5562 LOCKPORT IL
2016-12-27 815-836-9XXX 9000–9999Assigned METROPCS, INC. 5562 LOCKPORT IL
2016-12-13 815-217-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DE KALB IL
2016-12-12 815-416-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MORRIS IL
2016-12-12 815-416-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MORRIS IL
2016-11-18 815-478-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 MANHATTAN IL
2016-11-15 815-660-7XXX 7000–7999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E LOCKPORT IL
2016-11-11 815-687-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 WOODSTOCK IL
2016-11-11 815-687-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WOODSTOCK IL
2016-09-30 815-615-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MENDOTA IL
2016-09-27 815-681-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OGLESBY IL
2016-09-23 815-582-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JOLIET IL
2016-09-07 815-554-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J E DUBUQUE IL
2016-08-01 815-369-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 LENA IL
2016-07-22 815-908-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FREEPORT 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.