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 337
COMCAST IP PHONE, LLC 94
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
2019-07-03 337-345-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J LAFAYETTE LA
2019-02-11 337-510-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J SUNSET LA
2018-06-05 337-345-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J LAFAYETTE LA
2017-12-15 337-361-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J ERATH LA
2017-12-15 337-398-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J CROWLEY LA
2017-12-12 337-242-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J STMARTINVL LA
2017-12-12 337-252-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J BROUSSARD LA
2017-12-12 337-285-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J KAPLAN LA
2017-12-12 337-345-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J LAFAYETTE LA
2017-12-12 337-350-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J CENTERVL LA
2017-12-12 337-393-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J RAYNE LA
2017-12-12 337-414-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J BREAUX BDG LA
2017-12-12 337-420-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J BALDWIN LA
2017-12-12 337-434-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J HENDERSON LA
2017-12-12 337-444-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PARKS LA
2017-12-12 337-449-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J ARNAUDVL LA
2017-12-12 337-454-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CECELIA LA
2017-12-12 337-471-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J FRANKLIN LA
2017-12-12 337-490-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J DELCAMBRE LA
2017-12-12 337-520-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J CARENCRO LA
2017-12-12 337-561-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J DUSON LA
2017-12-12 337-573-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J YOUNGSVL LA
2017-12-12 337-608-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J NEW IBERIA LA
2017-12-12 337-636-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J JEANERETTE LA
2017-12-12 337-944-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J LOREAUVL LA
2017-12-06 337-283-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J ABBEVILLE LA
2017-05-23 337-703-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J LAFAYETTE LA
2017-03-01 337-703-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J LAFAYETTE LA
2017-02-07 337-393-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J RAYNE LA
2017-02-01 337-909-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J BREAUX BDG LA
2015-08-28 337-408-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J LAFAYETTE LA
2015-08-20 337-359-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J NEW IBERIA LA
2014-12-01 337-451-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J YOUNGSVL LA
2014-11-14 337-210-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J LAFAYETTE LA
2014-06-20 337-445-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J BROUSSARD LA
2014-05-29 337-909-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J BREAUX BDG LA
2014-03-11 337-704-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J LAFAYETTE LA
2013-09-03 337-565-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CARENCRO LA
2012-09-19 337-551-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J NEW IBERIA LA
2012-09-11 337-385-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J ABBEVILLE LA
2012-06-27 337-456-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J LAFAYETTE LA
2012-05-18 337-608-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J NEW IBERIA LA
2012-04-09 337-451-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J YOUNGSVL LA
2011-11-29 337-524-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J LAFAYETTE LA
2011-03-16 337-889-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J LAFAYETTE LA
2010-07-01 337-909-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J BREAUX BDG LA
2010-06-28 337-456-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J LAFAYETTE LA
2010-05-21 337-492-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J NEW IBERIA LA
2010-05-13 337-330-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J BROUSSARD LA
2009-06-12 337-456-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J LAFAYETTE LA

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.