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 248
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 |
|---|---|---|---|---|---|---|---|
| 2016-04-04 | 248-781-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | TROY | MI |
| 2015-06-18 | 248-781-1XXX | 1000–1999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | TROY | MI |
| 2014-08-22 | 248-206-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ROYAL OAK | MI |
| 2014-08-22 | 248-785-1XXX | 1000–1999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | W BLOOMFLD | MI |
| 2014-06-12 | 248-301-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | COMMERCE | MI |
| 2014-06-12 | 248-467-5XXX | 5000–5999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HOLLY | MI |
| 2014-06-12 | 248-929-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LAKE ORION | MI |
| 2014-05-27 | 248-717-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MILFDWH LK | MI |
| 2014-04-17 | 248-532-4XXX | 4000–4999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ORTONVILLE | MI |
| 2014-03-06 | 248-518-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CLARKSTON | MI |
| 2014-03-04 | 248-278-9XXX | 9000–9999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SOUTH LYON | MI |
| 2014-03-04 | 248-572-0XXX | 0000–0999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | OXFORD | MI |
| 2014-02-20 | 248-618-5XXX | 5000–5999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DRAYTON PL | MI |
| 2013-02-05 | 248-923-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ROCHESTER | MI |
| 2013-01-28 | 248-430-9XXX | 9000–9999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BIRMINGHAM | MI |
| 2013-01-28 | 248-509-1XXX | 1000–1999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | TROY | MI |
| 2013-01-28 | 248-537-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | AUBURN HTS | MI |
| 2013-01-28 | 248-639-2XXX | 2000–2999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PONTIAC | MI |
| 2013-01-28 | 248-692-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | NORTHVILLE | MI |
| 2013-01-28 | 248-859-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WALLEDLAKE | MI |
| 2013-01-28 | 248-991-8XXX | 8000–8999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | FARMINGTON | MI |
| 2012-06-29 | 248-234-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SOUTHFIELD | MI |
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.