NumberResearchRecent thousands-block assignments
12 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/18/2026
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, last 30 days
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Block | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 2013-08-05 | 619-388-3XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LA MESA | CA |
| 2013-08-05 | 747-220-6XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | AGOURA | CA |
| 2013-08-01 | 619-388-4XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LA MESA | CA |
| 2013-08-01 | 619-388-5XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LA MESA | CA |
| 2013-08-01 | 619-388-6XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LA MESA | CA |
| 2013-08-01 | 619-388-7XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LA MESA | CA |
| 2013-07-31 | 559-468-5XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | WOODLAKE | CA |
| 2013-07-12 | 209-398-5XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LIVINGSTON | CA |
| 2013-07-08 | 707-728-3XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | GUERNEVL | CA |
| 2013-07-08 | 707-883-4XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | UPPER LAKE | CA |
| 2013-06-28 | 707-355-5XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | MIDDLETOWN | CA |
| 2013-06-18 | 408-831-4XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNJS WEST | CA |
| 2013-06-18 | 408-831-5XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNJS WEST | CA |
| 2013-06-18 | 530-838-6XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | CORNING | CA |
| 2013-06-18 | 559-302-5XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | VISALIA | CA |
| 2013-06-18 | 559-777-8XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | FRESNO | CA |
| 2013-06-14 | 760-463-8XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | RIDGECREST | CA |
| 2013-06-14 | 831-237-6XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SOLEDAD | CA |
| 2013-06-14 | 909-375-2XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | BIGBEAR CY | CA |
| 2013-06-11 | 530-203-3XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | ELK CREEK | CA |
| 2013-05-20 | 617-545-6XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | EVERETT | MA |
| 2013-05-20 | 747-233-3XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | VAN NUYS | CA |
| 2013-05-10 | 858-256-3XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNDG LVTA | CA |
| 2013-05-08 | 916-462-3XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | RSVL MAIN | CA |
| 2013-05-01 | 760-691-3XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | VISTA | CA |
| 2013-04-29 | 209-546-3XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | STOCKTON | CA |
| 2013-04-29 | 415-767-3XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNFC CNTRL | CA |
| 2013-04-29 | 415-767-4XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNFC CNTRL | CA |
| 2013-04-29 | 415-842-8XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | IGNACIO | CA |
| 2013-04-29 | 657-218-3XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SANTA ANA | CA |
| 2013-04-29 | 657-221-4XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | ORANGE | CA |
| 2013-04-29 | 805-324-5XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SANBARBARA | CA |
| 2013-04-29 | 858-263-3XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LA JOLLA | CA |
| 2013-04-29 | 916-246-4XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SCRM NORTH | CA |
| 2013-04-26 | 424-290-5XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | EL SEGUNDO | CA |
| 2013-04-26 | 949-556-8XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | IRVINE | CA |
| 2013-04-16 | 559-404-5XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | COALINGA | CA |
| 2013-04-11 | 916-246-7XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SCRM NORTH | CA |
| 2013-04-10 | 559-482-8XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | BURREL | CA |
| 2013-03-11 | 209-874-7XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | WTFR MAIN | CA |
| 2013-02-22 | 209-272-8XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | MODESTO | CA |
| 2013-02-22 | 424-291-6XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNMN SNMN | CA |
| 2013-02-22 | 442-666-2XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | PALMDESERT | CA |
| 2013-02-22 | 747-201-8XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | BRBN BRBN | CA |
| 2013-02-22 | 760-814-6XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | OCSD CRLS | CA |
| 2013-02-22 | 916-900-7XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SCRM NORTH | CA |
| 2013-02-21 | 310-730-4XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | CULVERCITY | CA |
| 2013-02-21 | 415-635-2XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNFC CNTRL | CA |
| 2013-02-21 | 415-635-3XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNFC CNTRL | CA |
| 2013-02-21 | 424-284-4XXX | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | BEVERLYHLS | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/18/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.