NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 917
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2013-03-27 | 917-708-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN04 | NY |
| 2013-03-26 | 917-801-0XXX | 0000–0999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2013-03-26 | 917-801-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2013-03-26 | 917-801-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2013-03-26 | 917-801-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2013-03-26 | 917-801-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2013-03-18 | 917-933-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN07 | NY |
| 2013-03-15 | 917-966-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN06 | NY |
| 2013-03-15 | 917-966-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN06 | NY |
| 2013-03-15 | 917-966-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN06 | NY |
| 2013-03-15 | 917-966-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN06 | NY |
| 2013-03-06 | 917-933-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN07 | NY |
| 2013-03-05 | 917-473-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2013-03-05 | 917-473-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2013-03-05 | 917-634-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN04 | NY |
| 2013-03-05 | 917-966-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN06 | NY |
| 2013-03-05 | 917-966-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN06 | NY |
| 2013-02-22 | 917-471-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2013-02-22 | 917-471-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2013-02-22 | 917-893-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN06 | NY |
| 2013-02-22 | 917-893-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN06 | NY |
| 2013-02-05 | 917-891-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2013-01-22 | 917-891-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2013-01-22 | 917-947-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN06 | NY |
| 2012-11-29 | 917-789-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN07 | NY |
| 2012-10-05 | 917-631-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2012-10-05 | 917-631-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2012-09-14 | 917-259-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2012-08-07 | 917-962-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2012-05-08 | 917-962-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2012-03-22 | 917-819-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2012-03-22 | 917-819-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2011-12-15 | 917-792-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2011-12-15 | 917-792-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2011-12-15 | 917-792-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2011-12-15 | 917-792-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2011-12-08 | 917-792-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2011-10-20 | 917-688-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2011-10-13 | 917-792-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2011-10-13 | 917-792-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2011-03-21 | 917-737-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2011-03-21 | 917-737-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2008-01-25 | 917-652-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN06 | NY |
| 2004-07-16 | 917-507-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN01 | NY |
| 2004-07-16 | 917-529-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN01 | NY |
| 2004-07-16 | 917-645-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
| 2004-07-16 | 917-645-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | NWYRCYZN03 | NY |
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.