NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 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, all time — NPA 478
COMCAST IP PHONE, LLC 77
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
2024-12-04 478-346-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WRIGHTSVL GA
2024-11-25 478-887-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J JEFFERSNVL GA
2024-11-22 478-409-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J COCHRAN GA
2024-11-22 478-470-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J DANVILLE GA
2024-09-04 478-385-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J ADRIAN GA
2024-07-24 478-362-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SARDIS GA
2023-05-31 478-372-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J TWIN CITY GA
2022-12-20 478-340-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J FORSYTH GA
2021-12-09 478-350-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J BARTOW GA
2021-12-06 478-378-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WADLEY GA
2021-12-06 478-900-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J LOUISVILLE GA
2019-05-09 478-666-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J CENTERVL GA
2018-12-06 478-259-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J MACON GA
2018-12-06 478-259-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J MACON GA
2018-12-06 478-259-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J MACON GA
2018-12-06 478-259-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J MACON GA
2018-06-22 478-551-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J WARNERRBNS GA
2018-06-22 478-551-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WARNERRBNS GA
2018-04-30 478-236-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J WARNERRBNS GA
2018-04-24 478-259-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J MACON GA
2018-04-13 478-812-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J MACON GA
2018-04-13 478-812-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J MACON GA
2017-07-21 478-359-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J LIZELLA GA
2017-07-17 478-333-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J CENTERVL GA
2017-05-08 478-200-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J MACON GA
2017-04-03 478-200-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J MACON GA
2017-02-03 478-236-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J WARNERRBNS GA
2017-02-01 478-336-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MACON GA
2017-01-03 478-236-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J WARNERRBNS GA
2017-01-03 478-313-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PERRY GA
2017-01-03 478-333-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J CENTERVL GA
2017-01-03 478-654-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BYRON GA
2016-12-21 478-259-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J MACON GA
2016-12-21 478-259-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MACON GA
2016-11-30 478-292-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J MACON GA
2016-09-30 478-313-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J PERRY GA
2016-09-01 478-333-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J CENTERVL GA
2016-04-18 478-219-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J MACON GA
2015-12-04 478-812-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J MACON GA
2015-06-25 478-449-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J WARNERRBNS GA
2014-11-24 478-216-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MACON GA
2014-11-24 478-293-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J WARNERRBNS GA
2014-10-24 478-257-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J MACON GA
2014-06-19 478-352-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J WARNERRBNS GA
2014-06-19 478-352-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J WARNERRBNS GA
2014-06-19 478-352-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J WARNERRBNS GA
2014-06-19 478-352-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WARNERRBNS GA
2014-06-19 478-352-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WARNERRBNS GA
2014-06-19 478-352-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WARNERRBNS GA
2014-06-19 478-352-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J WARNERRBNS GA

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.