NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2021-02-17 | 516-893-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN01 | NY |
| 2021-02-17 | 516-893-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN01 | NY |
| 2021-02-17 | 516-893-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN01 | NY |
| 2021-02-17 | 516-896-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN02 | NY |
| 2021-02-17 | 516-896-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN02 | NY |
| 2021-02-17 | 516-896-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN02 | NY |
| 2018-10-26 | 516-916-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN01 | NY |
| 2016-07-25 | 516-207-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN01 | NY |
| 2016-07-25 | 516-207-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN01 | NY |
| 2016-07-25 | 516-207-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN01 | NY |
| 2016-07-25 | 516-207-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN01 | NY |
| 2016-07-25 | 516-207-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN01 | NY |
| 2016-07-25 | 516-219-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN03 | NY |
| 2016-07-25 | 516-219-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN03 | NY |
| 2016-07-25 | 516-219-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN03 | NY |
| 2016-07-25 | 516-219-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN03 | NY |
| 2016-07-25 | 516-219-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN03 | NY |
| 2016-07-25 | 516-269-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN02 | NY |
| 2016-07-25 | 516-269-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN02 | NY |
| 2016-07-25 | 516-273-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN02 | NY |
| 2016-07-25 | 516-494-1XXX | 1000–1999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN09 | NY |
| 2016-07-25 | 516-494-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN09 | NY |
| 2016-07-25 | 516-494-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN09 | NY |
| 2016-07-25 | 516-494-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN09 | NY |
| 2016-07-25 | 516-494-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN09 | NY |
| 2016-07-25 | 516-563-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN02 | NY |
| 2016-07-25 | 516-583-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN04 | NY |
| 2016-07-25 | 516-583-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN04 | NY |
| 2016-07-25 | 516-583-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN04 | NY |
| 2016-07-25 | 516-583-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN04 | NY |
| 2016-07-25 | 516-583-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN04 | NY |
| 2016-07-25 | 516-600-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN06 | NY |
| 2016-07-25 | 516-600-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN06 | NY |
| 2016-07-25 | 516-600-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN06 | NY |
| 2016-07-25 | 516-600-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN06 | NY |
| 2016-07-25 | 516-600-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN06 | NY |
| 2016-07-25 | 516-727-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN02 | NY |
| 2014-07-08 | 516-206-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN06 | NY |
| 2014-07-08 | 516-231-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN04 | NY |
| 2014-07-08 | 516-243-0XXX | 0000–0999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN05 | NY |
| 2014-07-08 | 516-253-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN02 | NY |
| 2014-07-08 | 516-259-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN03 | NY |
| 2014-07-08 | 516-387-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN01 | NY |
| 2014-07-08 | 516-597-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN08 | NY |
| 2014-07-08 | 516-624-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN07 | NY |
| 2014-07-08 | 516-900-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN09 | NY |
| 2012-11-14 | 516-301-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | NASSAUZN01 | NY |
| 2012-11-14 | 516-370-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | FARMINGDL | NY |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.