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 856
COMCAST IP PHONE, LLC 235
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
2024-03-13 856-548-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J MOORESTOWN NJ
2024-03-13 856-591-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J MOORESTOWN NJ
2023-04-14 856-694-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J FRANKLINVL NJ
2023-02-13 856-586-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J WOODSTOWN NJ
2022-10-31 856-399-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J ELMER NJ
2022-10-18 856-386-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J BRIDGETON NJ
2022-10-18 856-386-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J BRIDGETON NJ
2022-10-03 856-758-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CEDARVILLE NJ
2022-05-31 856-239-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J HADDON HTS NJ
2021-07-16 856-509-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J HADDONFLD NJ
2021-07-16 856-509-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J HADDONFLD NJ
2020-10-19 856-724-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J MOORESTOWN NJ
2020-10-19 856-724-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MOORESTOWN NJ
2020-10-19 856-724-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J MOORESTOWN NJ
2020-08-17 856-252-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J MOORESTOWN NJ
2020-03-20 856-513-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J WILLIAMSTN NJ
2019-12-04 856-360-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J MOORESTOWN NJ
2019-10-24 856-360-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MOORESTOWN NJ
2019-08-23 856-543-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J RIVERTON NJ
2019-06-05 856-817-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MARLTON NJ
2019-06-05 856-824-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J RIVERSIDE NJ
2019-04-10 856-766-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MULLICA HL NJ
2019-04-01 856-302-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J BLACKWOOD NJ
2019-02-28 856-292-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J WENONAH NJ
2019-02-28 856-360-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J MOORESTOWN NJ
2019-02-28 856-443-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WOODBURY NJ
2018-11-13 856-486-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MERCHANTVL NJ
2018-05-18 856-301-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J VINELAND NJ
2018-05-18 856-882-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J LAUREL SPG NJ
2018-05-14 856-270-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PITMAN NJ
2018-05-11 856-861-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J BEAVER BRK NJ
2018-05-03 856-316-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J MOORESTOWN NJ
2017-12-01 856-259-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J WILLIAMSTN NJ
2017-10-25 856-846-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J BERLIN NJ
2017-09-27 856-378-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J BRIDGETON NJ
2017-09-20 856-851-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J PENNSGROVE NJ
2017-08-29 856-651-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J HADDONFLD NJ
2017-06-21 856-666-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PAULSBORO NJ
2016-10-14 856-755-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MERCHANTVL NJ
2016-09-20 856-394-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MOORESTOWN NJ
2016-09-16 856-212-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J VINELAND NJ
2016-09-09 856-373-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BLACKWOOD NJ
2016-08-02 856-446-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J MARLTON NJ
2016-05-04 856-805-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J LAUREL SPG NJ
2016-03-18 856-998-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J RIVERSIDE NJ
2015-12-30 856-528-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J HADDONFLD NJ
2015-11-17 856-372-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MOORESTOWN NJ
2015-11-03 856-595-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J GLASSBORO NJ
2015-10-08 856-543-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J RIVERTON NJ
2015-09-28 856-345-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J WOODBURY NJ

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.