NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

10 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 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
2011-10-06 217-210-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD IL
2011-09-19 217-487-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C CANTRALL IL
2011-09-19 217-629-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C RIVERTON IL
2011-09-12 217-418-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHAMPAURBN IL
2011-09-02 217-331-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD IL
2011-08-31 217-607-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J CHAMPAURBN IL
2011-08-31 217-918-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DANVILLE IL
2011-08-25 217-671-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LINCOLN IL
2011-08-22 217-974-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHAMPAURBN IL
2011-08-18 217-979-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2011-08-17 217-565-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TAYLORVL IL
2011-08-17 217-994-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 EFFINGHAM IL
2011-08-08 217-204-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSONVL IL
2011-08-08 217-278-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHAMPAURBN IL
2011-08-08 217-329-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DECATUR IL
2011-08-08 217-506-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 QUINCY IL
2011-08-02 217-298-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J CHAMPAURBN IL
2011-08-02 217-298-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J CHAMPAURBN IL
2011-07-29 217-666-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C WEST DANA IL
2011-07-26 217-909-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 BEARDSTOWN IL
2011-07-25 217-572-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2011-07-25 217-572-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2011-07-25 217-572-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2011-07-25 217-572-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2011-07-25 217-572-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2011-07-25 217-572-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2011-07-25 217-572-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2011-07-20 217-645-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LIBERTY IL
2011-07-05 217-231-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 QUINCY IL
2011-06-27 217-331-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD IL
2011-06-27 217-979-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHAMPAURBN IL
2011-06-16 217-210-0XXX 0000–0999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E SPRINGFLD IL
2011-06-16 217-210-3XXX 3000–3999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E SPRINGFLD IL
2011-06-16 217-210-4XXX 4000–4999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E SPRINGFLD IL
2011-06-16 217-210-5XXX 5000–5999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E SPRINGFLD IL
2011-06-16 217-210-6XXX 6000–6999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E SPRINGFLD IL
2011-06-16 217-210-7XXX 7000–7999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E SPRINGFLD IL
2011-06-16 217-210-8XXX 8000–8999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E SPRINGFLD IL
2011-06-16 217-210-9XXX 9000–9999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E SPRINGFLD IL
2011-06-16 217-281-0XXX 0000–0999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHAMPAURBN IL
2011-06-16 217-281-3XXX 3000–3999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHAMPAURBN IL
2011-06-16 217-281-4XXX 4000–4999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHAMPAURBN IL
2011-06-16 217-281-5XXX 5000–5999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHAMPAURBN IL
2011-06-16 217-281-6XXX 6000–6999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHAMPAURBN IL
2011-06-16 217-281-7XXX 7000–7999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHAMPAURBN IL
2011-06-16 217-281-8XXX 8000–8999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHAMPAURBN IL
2011-06-16 217-281-9XXX 9000–9999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHAMPAURBN IL
2011-06-13 217-761-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2011-06-09 217-685-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SPRINGFLD IL
2011-05-17 217-413-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DECATUR 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.