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 661
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-03-04 | 661-534-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DELANO | CA |
| 2015-02-26 | 661-232-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MOJAVE | CA |
| 2015-02-26 | 661-279-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ROSAMOND | CA |
| 2015-02-26 | 661-289-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LEBEC | CA |
| 2015-02-26 | 661-300-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | TEHACHAPI | CA |
| 2015-02-26 | 661-443-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WALKERBSIN | CA |
| 2015-02-26 | 661-457-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LOST HILLS | CA |
| 2015-02-26 | 661-459-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SHAFTER | CA |
| 2015-02-26 | 661-469-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BUTTONWLLW | CA |
| 2015-02-26 | 661-491-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BKFD SOUTH | CA |
| 2015-02-26 | 661-525-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BKFD NORTH | CA |
| 2015-02-26 | 661-548-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CLFRNHTSPG | CA |
| 2015-02-26 | 661-552-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | EARLIMART | CA |
| 2015-02-26 | 661-745-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | TAFT | CA |
| 2015-02-26 | 661-761-5XXX | 5000–5999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MCKITTRICK | CA |
| 2015-02-26 | 661-766-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CUYAMA | CA |
| 2015-02-26 | 661-772-0XXX | 0000–0999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WASCO | CA |
| 2015-02-26 | 661-779-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ARVIN | CA |
| 2015-02-26 | 661-927-9XXX | 9000–9999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MCFARLAND | CA |
| 2015-02-16 | 661-546-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BKFD MAIN | CA |
| 2014-06-04 | 661-780-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PLDL LNVY | CA |
| 2014-05-30 | 661-306-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LAKEHUGHES | CA |
| 2014-05-30 | 661-339-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HI VISTA | CA |
| 2014-05-30 | 661-532-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BIG BUTTE | CA |
| 2014-03-14 | 661-430-2XXX | 2000–2999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SNCA SGCC | CA |
| 2013-02-01 | 661-441-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PLDL PLDL | CA |
| 2013-02-01 | 661-471-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LANCASTER | CA |
| 2013-01-29 | 661-705-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SNCA NHCS | CA |
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.