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 816
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2014-02-04 | 816-253-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | AGENCY | MO |
| 2014-02-04 | 816-342-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | AVENUECITY | MO |
| 2014-02-04 | 816-432-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | SAVANNAH | MO |
| 2014-02-04 | 816-484-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | SANANTONIO | MO |
| 2013-11-07 | 816-259-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | ST JOSEPH | MO |
| 2013-11-07 | 816-259-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | ST JOSEPH | MO |
| 2013-11-07 | 816-259-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | ST JOSEPH | MO |
| 2013-11-07 | 816-259-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | ST JOSEPH | MO |
| 2011-03-21 | 816-749-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | ST JOSEPH | MO |
| 2011-03-21 | 816-749-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | ST JOSEPH | MO |
| 2008-04-02 | 816-432-0XXX | 0000–0999 | Assigned | CSC VOICE, LLC | 612K | SAVANNAH | MO |
| 2007-03-14 | 816-342-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | AVENUECITY | MO |
| 2006-12-06 | 816-749-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | ST JOSEPH | MO |
| 2006-01-19 | 816-484-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | SANANTONIO | MO |
| 2005-02-08 | 816-432-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | SAVANNAH | MO |
| 2005-02-04 | 816-338-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | AGENCY | MO |
| 2002-05-16 | 816-273-0XXX | 0000–0999 | Assigned | CSC VOICE, LLC | 612K | ST JOSEPH | MO |
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.