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 434
COMCAST IP PHONE, LLC 82
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
2023-10-18 434-261-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J RUSTBURG VA
2023-03-08 434-946-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J AMHERST VA
2022-06-28 434-506-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J EMPORIA VA
2021-08-17 434-241-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J LYNCHBURG VA
2021-08-17 434-241-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J LYNCHBURG VA
2021-03-05 434-281-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SOUTH HILL VA
2021-02-26 434-268-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J CROZET VA
2021-01-13 434-471-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SO BOSTON VA
2020-12-08 434-232-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J LYNCHBURG VA
2020-12-08 434-235-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CHARLOTSVL VA
2020-12-08 434-235-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J CHARLOTSVL VA
2020-12-08 434-554-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J DANVILLE VA
2020-12-08 434-992-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J STANARDSVL VA
2020-06-26 434-280-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BUCKINGHAM VA
2020-06-26 434-505-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J DILLWYN VA
2020-05-14 434-255-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J ARVONIA VA
2020-05-12 434-204-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J BROOKNEAL VA
2019-04-01 434-849-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J LYNCHBURG VA
2018-05-29 434-465-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J CHARLOTSVL VA
2018-04-24 434-425-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J DANVILLE VA
2018-04-12 434-215-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J LYNCHBURG VA
2017-11-15 434-956-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CHARLOTSVL VA
2017-07-03 434-616-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J LYNCHBURG VA
2017-06-21 434-591-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PALMYRA VA
2017-05-18 434-886-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J STONYCREEK VA
2016-11-30 434-829-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J EMPORIA VA
2016-11-18 434-284-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J CHARLOTSVL VA
2016-09-09 434-386-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J LYNCHBURG VA
2016-08-25 434-990-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J STANARDSVL VA
2016-08-05 434-422-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J CHARLOTSVL VA
2016-05-13 434-849-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J LYNCHBURG VA
2016-05-04 434-835-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J DANVILLE VA
2016-03-03 434-549-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J DANVILLE VA
2016-03-02 434-284-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J CHARLOTSVL VA
2016-01-14 434-328-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J CHARLOTSVL VA
2015-10-29 434-439-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J LYNCHBURG VA
2015-06-18 434-234-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J CHARLOTSVL VA
2015-04-08 434-857-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J DANVILLE VA
2015-03-23 434-404-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SO BOSTON VA
2015-03-10 434-439-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J LYNCHBURG VA
2015-03-05 434-812-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J CROZET VA
2014-12-05 434-939-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J STANARDSVL VA
2014-09-15 434-857-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J DANVILLE VA
2014-08-28 434-529-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J CHARLOTSVL VA
2014-07-11 434-616-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J LYNCHBURG VA
2014-06-23 434-510-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J PALMYRA VA
2014-05-22 434-284-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J CHARLOTSVL VA
2013-12-20 434-616-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J LYNCHBURG VA
2013-08-15 434-328-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J CHARLOTSVL VA
2013-07-16 434-421-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J DANVILLE VA

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.