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
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2017-10-24 | 931-322-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MONTEREY | TN |
| 2016-09-16 | 931-202-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CROSSVILLE | TN |
| 2016-09-16 | 931-400-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | COOKEVILLE | TN |
| 2014-03-26 | 931-208-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MCEWEN | TN |
| 2014-03-26 | 931-701-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LYLES | TN |
| 2014-02-20 | 931-288-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LEWISBURG | TN |
| 2014-02-20 | 931-295-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HOHENWALD | TN |
| 2014-02-20 | 931-298-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ELKTON | TN |
| 2014-02-20 | 931-299-1XXX | 1000–1999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WAVERLY | TN |
| 2014-02-20 | 931-300-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LAWRENCEBG | TN |
| 2014-02-20 | 931-305-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DOVER | TN |
| 2014-02-20 | 931-325-8XXX | 8000–8999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MTPLEASANT | TN |
| 2014-02-20 | 931-326-2XXX | 2000–2999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PALMYRA | TN |
| 2014-02-20 | 931-387-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CUNNINGHAM | TN |
| 2014-02-20 | 931-447-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PULASKI | TN |
| 2014-02-20 | 931-452-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LYNNVILLE | TN |
| 2014-02-20 | 931-477-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SUMMERTOWN | TN |
| 2014-02-20 | 931-603-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | FREDONIA | TN |
| 2014-02-20 | 931-671-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SANTA FE | TN |
| 2014-02-20 | 931-674-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SPRINGHILL | TN |
| 2014-02-20 | 931-706-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WILLIAMSPT | TN |
| 2014-02-20 | 931-764-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | W VANLEER | TN |
| 2014-02-20 | 931-805-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HAMPSHIRE | TN |
| 2014-02-20 | 931-820-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SANGO | TN |
| 2014-02-19 | 931-219-4XXX | 4000–4999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CENTERVL | TN |
| 2014-02-19 | 931-240-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | FAYETTEVL | TN |
| 2014-02-19 | 931-313-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WINCHESTER | TN |
| 2014-02-19 | 931-408-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | TULLAHOMA | TN |
| 2014-02-19 | 931-463-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SEWANEE | TN |
| 2014-02-19 | 931-492-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SHELBYVL | TN |
| 2014-02-19 | 931-516-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CUMBERLDCY | TN |
| 2014-02-19 | 931-632-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LYNCHBURG | TN |
| 2014-02-19 | 931-652-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PETERSBURG | TN |
| 2014-02-19 | 931-683-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CULLEOKA | TN |
| 2014-02-19 | 931-771-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SOOAKGROVE | TN |
| 2014-02-19 | 931-807-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | NORMANDY | TN |
| 2014-02-19 | 931-813-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WARTRACE | TN |
| 2014-02-19 | 931-952-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MANCHESTER | TN |
| 2014-02-19 | 931-981-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | COLUMBIA | TN |
| 2013-10-17 | 931-257-9XXX | 9000–9999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | 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.