NumberResearchRecent thousands-block assignments
0 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, all time
New assignments by month
Sep 2026
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| Assigned | Block | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 2015-10-22 | 925-983-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BSHP RNCH | CA |
| 2015-10-15 | 213-279-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 01 | CA |
| 2015-10-14 | 424-360-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | TORRANCE | CA |
| 2015-10-05 | 424-535-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | W ANGELES | CA |
| 2015-09-10 | 916-490-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | SCRM MAIN | CA |
| 2015-09-10 | 916-490-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | SCRM MAIN | CA |
| 2015-08-21 | 661-320-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | LEBEC | CA |
| 2015-06-19 | 213-334-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 01 | CA |
| 2015-06-12 | 760-394-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SALTON | CA |
| 2015-06-01 | 669-253-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MORGANHILL | CA |
| 2015-05-26 | 530-955-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | NEVADACITY | CA |
| 2015-05-14 | 949-432-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | NEWPORTBCH | CA |
| 2015-05-05 | 916-738-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | SCRM MAIN | CA |
| 2015-04-30 | 510-256-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CROCKETT | CA |
| 2015-04-30 | 530-293-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | PLVL KYBRZ | CA |
| 2015-04-30 | 530-691-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | REDDING | CA |
| 2015-04-22 | 323-405-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 04 | CA |
| 2015-04-21 | 661-564-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | BKFD SOUTH | CA |
| 2015-04-21 | 661-564-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | BKFD SOUTH | CA |
| 2015-04-21 | 661-564-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | BKFD SOUTH | CA |
| 2015-04-10 | 424-359-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BEVERLYHLS | CA |
| 2015-04-07 | 209-302-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | MANTECA | CA |
| 2015-04-07 | 424-393-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | INGLEWOOD | CA |
| 2015-04-07 | 657-255-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BUENA PARK | CA |
| 2015-04-07 | 916-547-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | RSVL CTHT | CA |
| 2015-04-07 | 951-708-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | HEMT SAGE | CA |
| 2015-03-24 | 442-253-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CALIPATRIA | CA |
| 2015-03-23 | 209-332-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | IONE | CA |
| 2015-03-23 | 209-916-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | JAMESTOWN | CA |
| 2015-02-16 | 831-237-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SOLEDAD | CA |
| 2015-02-12 | 424-301-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | EL SEGUNDO | CA |
| 2015-02-10 | 916-582-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | ELK GROVE | CA |
| 2015-02-02 | 213-275-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 07 | CA |
| 2015-01-30 | 657-262-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ANAHEIM | CA |
| 2015-01-30 | 707-890-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SANTA ROSA | CA |
| 2015-01-30 | 714-831-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BREA | CA |
| 2015-01-30 | 949-372-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | IRVINE | CA |
| 2015-01-27 | 530-213-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | NTAH BCWY | CA |
| 2015-01-26 | 707-371-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | WILLITS | CA |
| 2015-01-26 | 707-604-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | GUERNEVL | CA |
| 2015-01-26 | 707-692-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LOWER LAKE | CA |
| 2015-01-23 | 209-714-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | SUTTER CRK | CA |
| 2014-12-10 | 916-621-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | SCRM NORTH | CA |
| 2014-11-10 | 916-629-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | MEADOWVIEW | CA |
| 2014-11-10 | 916-629-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | MEADOWVIEW | CA |
| 2014-10-20 | 747-234-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BRBN BRBN | CA |
| 2014-10-10 | 949-656-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | IRVINE | CA |
| 2014-10-03 | 424-361-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CULVERCITY | CA |
| 2014-10-03 | 909-487-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CRESTLINE | CA |
| 2014-10-03 | 909-582-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ARROWHEAD | 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.