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 317
COMCAST IP PHONE, LLC 166
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
2024-02-08 317-317-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2024-02-08 317-317-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2024-02-08 317-317-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2024-02-08 317-317-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2024-02-08 317-317-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2024-02-08 317-317-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2024-02-08 317-317-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2024-02-08 317-317-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2024-02-08 317-317-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2024-02-08 317-317-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2019-02-26 317-956-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2018-01-08 317-343-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J CARMEL IN
2017-11-08 317-756-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2017-06-02 317-516-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J FISHERS IN
2017-03-07 317-516-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J FISHERS IN
2017-03-07 317-516-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J FISHERS IN
2017-03-07 317-516-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J FISHERS IN
2017-03-07 317-516-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J FISHERS IN
2016-11-14 317-734-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2016-09-23 317-343-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J CARMEL IN
2016-09-08 317-827-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J FISHERS IN
2016-09-07 317-552-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2016-08-23 317-764-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J NOBLESVL IN
2016-05-26 317-746-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2016-03-31 317-743-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J GREENWOOD IN
2016-03-24 317-827-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J FISHERS IN
2015-12-14 317-757-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2015-12-14 317-757-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2015-11-02 317-389-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2015-09-03 317-932-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J OAKLANDON IN
2015-08-18 317-744-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2015-07-31 317-567-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J FISHERS IN
2015-07-15 317-763-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WESTFIELD IN
2015-06-24 317-982-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2015-04-01 317-458-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J BARGERSVL IN
2015-03-24 317-589-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MCCORDSVL IN
2015-03-09 317-747-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J FORTVILLE IN
2015-03-06 317-798-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J CARMEL IN
2015-03-06 317-981-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2015-02-17 317-857-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WESTNEWTON IN
2015-02-06 317-530-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J WHITELAND IN
2015-01-12 317-967-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J GREENFIELD IN
2014-12-29 317-939-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J BROWNSBURG IN
2014-12-29 317-939-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J BROWNSBURG IN
2014-12-29 317-961-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J MOORESVL IN
2014-11-20 317-699-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J SHELBYVL IN
2014-11-18 317-668-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J FRANKLIN IN
2014-09-22 317-434-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J CUMBERLAND IN
2014-09-09 317-969-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J INDIANAPLS IN
2014-08-27 317-588-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J FISHERS IN

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.