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 484
COMCAST IP PHONE, LLC 242
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
2026-02-25 484-839-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J KUTZTOWN PA
2026-02-25 484-857-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J KEMPTON PA
2023-06-14 484-742-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J EMMAUS PA
2023-06-14 484-858-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J HELLERTOWN PA
2023-06-02 484-605-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J LENAPE PA
2023-06-02 484-847-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J KEMBLESVL PA
2023-02-03 484-897-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J LANDENBERG PA
2022-09-26 484-936-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J ROBESONIA PA
2022-09-20 484-295-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J BIRDSBORO PA
2022-08-11 484-967-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J GLENMOORE PA
2021-06-18 484-879-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J EXTON PA
2020-09-18 484-235-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN30 PA
2020-09-18 484-235-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN30 PA
2019-07-11 484-878-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J READING PA
2019-04-10 484-665-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J HAMBURG PA
2019-04-04 484-940-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J POTTSTOWN PA
2018-11-08 484-445-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN12 PA
2018-09-11 484-583-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN26 PA
2018-09-11 484-803-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN30 PA
2018-07-30 484-460-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J ALLENTOWN PA
2018-07-27 484-698-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J DOWNINGTN PA
2018-07-27 484-846-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN10 PA
2018-05-22 484-573-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN13 PA
2018-05-04 484-878-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J READING PA
2018-04-26 484-874-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J EXTON PA
2018-03-08 484-414-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN24 PA
2017-11-15 484-854-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J COLLEGEVL PA
2017-10-03 484-580-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN26 PA
2017-10-03 484-612-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN30 PA
2017-05-17 484-516-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J READING PA
2017-04-12 484-329-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN28 PA
2017-01-30 484-768-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN11 PA
2016-12-02 484-473-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J W CHESTER PA
2016-11-14 484-513-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J READING PA
2016-10-17 484-420-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN22 PA
2016-05-04 484-869-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J READING PA
2016-02-08 484-800-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN10 PA
2016-01-29 484-869-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J READING PA
2015-12-18 484-370-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN30 PA
2015-11-12 484-920-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PHOENIXVL PA
2015-11-05 484-987-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J READING PA
2015-09-29 484-277-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J LEESPORT PA
2015-08-11 484-644-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J POTTSTOWN PA
2015-07-31 484-329-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN28 PA
2015-07-27 484-584-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN26 PA
2015-07-13 484-938-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J ROYERSFORD PA
2015-07-06 484-593-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J DOWNINGTN PA
2015-07-01 484-462-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN17 PA
2015-06-01 484-987-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J READING PA
2015-05-27 484-490-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN11 PA

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.