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 931
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2023-06-02 | 931-415-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | CLARKRANGE | TN |
| 2023-05-23 | 931-396-0XXX | 0000–0999 | Assigned | COMCAST IP PHONE, LLC | 318J | JAMESTOWN | TN |
| 2023-04-07 | 931-412-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | WAVERLY | TN |
| 2023-04-07 | 931-633-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | LYLES | TN |
| 2022-06-16 | 931-710-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | CROSSVILLE | TN |
| 2019-06-19 | 931-915-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | WINCHESTER | TN |
| 2018-06-15 | 931-871-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | LIVINGSTON | TN |
| 2016-04-01 | 931-351-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | ESTILL SPG | TN |
| 2016-03-16 | 931-313-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | WINCHESTER | TN |
| 2016-03-16 | 931-464-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | LYNCHBURG | TN |
| 2015-08-04 | 931-401-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | CLARKSVL | TN |
| 2014-11-20 | 931-202-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | CROSSVILLE | TN |
| 2014-10-29 | 931-546-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | SOOAKGROVE | TN |
| 2010-03-08 | 931-444-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | CLARKSVL | TN |
| 2008-06-16 | 931-996-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | LYLES | TN |
| 2007-11-15 | 931-287-0XXX | 0000–0999 | Assigned | COMCAST IP PHONE, LLC | 318J | CROSSVILLE | TN |
| 2006-05-23 | 931-299-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | WAVERLY | TN |
| 2006-05-23 | 931-542-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | CLARKSVL | TN |
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.