NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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 516
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
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Apr 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2018-12-18 | 516-871-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN08 | NY |
| 2018-11-05 | 516-416-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN05 | NY |
| 2018-11-05 | 516-588-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN07 | NY |
| 2018-10-26 | 516-758-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN03 | NY |
| 2018-10-15 | 516-517-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN06 | NY |
| 2016-05-02 | 516-654-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN09 | NY |
| 2016-04-29 | 516-600-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN06 | NY |
| 2015-10-02 | 516-261-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN08 | NY |
| 2015-09-16 | 516-226-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN07 | NY |
| 2015-03-05 | 516-243-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN05 | NY |
| 2014-01-08 | 516-340-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | COLDSPGHBR | NY |
| 2013-08-16 | 516-321-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN01 | NY |
| 2013-08-16 | 516-400-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN03 | NY |
| 2013-08-06 | 516-590-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN09 | NY |
| 2013-03-05 | 516-200-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN04 | NY |
| 2013-03-05 | 516-246-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN05 | NY |
| 2012-12-07 | 516-415-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN06 | NY |
| 2012-11-29 | 516-500-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN05 | NY |
| 2012-10-25 | 516-519-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN02 | NY |
| 2012-10-19 | 516-595-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN08 | NY |
| 2012-10-08 | 516-927-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | FARMINGDL | NY |
| 2012-09-14 | 516-218-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN03 | NY |
| 2012-09-14 | 516-544-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN06 | NY |
| 2012-08-29 | 516-900-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN09 | NY |
| 2012-08-07 | 516-743-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN05 | NY |
| 2012-07-19 | 516-918-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN01 | NY |
| 2012-06-15 | 516-200-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN04 | NY |
| 2012-04-25 | 516-544-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN06 | NY |
| 2012-04-25 | 516-597-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN08 | NY |
| 2012-04-25 | 516-597-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN08 | NY |
| 2012-03-16 | 516-427-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN05 | NY |
| 2011-09-20 | 516-399-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN04 | NY |
| 2011-08-30 | 516-341-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN03 | NY |
| 2011-08-30 | 516-493-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN05 | NY |
| 2010-10-19 | 516-809-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN09 | NY |
| 2010-09-27 | 516-341-0XXX | 0000–0999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN03 | NY |
| 2010-09-24 | 516-686-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN04 | NY |
| 2010-09-22 | 516-864-0XXX | 0000–0999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN07 | NY |
| 2010-03-26 | 516-308-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN09 | NY |
| 2008-11-03 | 516-586-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | FARMINGDL | NY |
| 2008-09-22 | 516-723-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN04 | NY |
| 2008-08-19 | 516-441-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN01 | NY |
| 2008-03-14 | 516-472-0XXX | 0000–0999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN01 | NY |
| 2008-02-21 | 516-506-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN05 | NY |
| 2008-02-19 | 516-307-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN05 | NY |
| 2008-02-19 | 516-307-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN05 | NY |
| 2008-02-12 | 516-934-0XXX | 0000–0999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN08 | NY |
| 2008-01-25 | 516-802-0XXX | 0000–0999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN07 | NY |
| 2007-12-14 | 516-568-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN03 | NY |
| 2007-11-15 | 516-492-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN02 | NY |
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.