NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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, all time — NPA 217
COMCAST IP PHONE, LLC 101
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
2025-12-04 217-674-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J LATHAM IL
2025-08-14 217-496-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SHERMAN IL
2025-06-13 217-765-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J ALVIN IL
2023-04-11 217-988-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J ARCOLA IL
2022-10-12 217-970-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SPRINGFLD IL
2022-10-12 217-970-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SPRINGFLD IL
2022-10-12 217-970-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SPRINGFLD IL
2022-10-12 217-970-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J SPRINGFLD IL
2020-03-19 217-280-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SPRINGFLD IL
2015-09-24 217-717-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J SPRINGFLD IL
2015-08-26 217-605-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J LINCOLN IL
2015-04-14 217-542-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J DECATUR IL
2015-03-06 217-506-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J QUINCY IL
2015-02-05 217-697-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J CHATHAM IL
2014-10-03 217-503-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SPRINGFLD IL
2014-08-04 217-530-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CHAMPAURBN IL
2014-07-16 217-504-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J DANVILLE IL
2014-02-26 217-542-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J DECATUR IL
2013-10-22 217-600-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J CHAMPAURBN IL
2013-09-09 217-607-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J CHAMPAURBN IL
2013-04-11 217-209-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J QUINCY IL
2012-12-17 217-693-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J CHAMPAURBN IL
2011-08-31 217-607-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J CHAMPAURBN IL
2011-05-06 217-209-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J QUINCY IL
2011-04-04 217-269-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CHRISMAN IL
2007-08-28 217-571-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J MOUNT ZION IL
2007-08-16 217-247-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J RIDGE FARM IL
2007-08-16 217-284-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J INDIANOLA IL
2007-08-16 217-354-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J OAKWOOD IL
2007-08-16 217-469-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J ST JOSEPH IL
2007-08-16 217-486-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J ILLIOPOLIS IL
2007-08-16 217-516-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J DANVILLE IL
2007-08-16 217-548-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J FITHIAN IL
2007-08-16 217-582-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J OGDEN IL
2007-08-16 217-628-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J DIVERNON IL
2007-08-16 217-629-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J RIVERTON IL
2007-08-16 217-643-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J THOMASBORO IL
2007-08-16 217-646-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PAWNEE IL
2007-08-16 217-651-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J LINCOLN IL
2007-08-16 217-660-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J ROCHESTER IL
2007-08-16 217-662-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J GEORGETOWN IL
2007-08-16 217-668-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J NIANTIC IL
2007-08-16 217-684-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PHILO IL
2007-08-16 217-688-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J SIDNEY IL
2007-08-16 217-697-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J CHATHAM IL
2007-08-16 217-733-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J FAIRMOUNT IL
2007-08-16 217-767-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J ELWIN IL
2007-08-16 217-791-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J DECATUR IL
2007-08-16 217-791-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J DECATUR IL
2007-08-16 217-863-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J BONDVILLE IL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.