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.
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| Assigned | Block | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 2007-03-13 | 760-748-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BORREGO | CA |
| 2007-03-13 | 760-890-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CALEXICO | CA |
| 2007-03-13 | 760-913-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | VALLEY CTR | CA |
| 2007-03-12 | 661-282-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | BKFD SOUTH | CA |
| 2007-03-12 | 661-282-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | BKFD SOUTH | CA |
| 2007-03-01 | 858-202-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LA JOLLA | CA |
| 2007-02-16 | 530-327-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | PARADISE | CA |
| 2007-02-15 | 650-214-0XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MT VIEW | CA |
| 2007-02-15 | 650-214-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MT VIEW | CA |
| 2007-02-15 | 650-214-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MT VIEW | CA |
| 2007-02-15 | 650-214-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MT VIEW | CA |
| 2007-02-15 | 650-214-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MT VIEW | CA |
| 2007-02-15 | 650-214-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MT VIEW | CA |
| 2007-02-15 | 650-214-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MT VIEW | CA |
| 2007-02-15 | 650-214-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MT VIEW | CA |
| 2007-02-15 | 650-214-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MT VIEW | CA |
| 2007-02-15 | 650-214-9XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MT VIEW | CA |
| 2007-02-14 | 209-676-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | ATWATER | CA |
| 2007-02-14 | 209-752-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | LOS BANOS | CA |
| 2007-02-14 | 707-485-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | UKIAH | CA |
| 2007-02-14 | 707-840-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ARCATA | CA |
| 2007-02-14 | 805-874-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | POINT MUGU | CA |
| 2007-02-14 | 805-921-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SANTAPAULA | CA |
| 2007-02-09 | 209-923-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | MANTECA | CA |
| 2007-02-07 | 530-539-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | SOUTHTAHOE | CA |
| 2007-02-07 | 909-918-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CALIMESA | CA |
| 2007-02-06 | 323-652-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 09 | CA |
| 2007-02-06 | 323-652-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 09 | CA |
| 2007-01-31 | 619-916-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LA MESA | CA |
| 2007-01-09 | 510-877-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | OKLD TRNID | CA |
| 2006-12-27 | 650-427-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PALO ALTO | CA |
| 2006-12-27 | 650-427-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PALO ALTO | CA |
| 2006-12-27 | 650-427-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PALO ALTO | CA |
| 2006-12-27 | 650-427-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PALO ALTO | CA |
| 2006-12-27 | 650-427-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PALO ALTO | CA |
| 2006-12-27 | 650-427-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PALO ALTO | CA |
| 2006-12-27 | 650-427-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PALO ALTO | CA |
| 2006-12-27 | 650-427-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PALO ALTO | CA |
| 2006-12-19 | 714-548-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | WESTMINSTR | CA |
| 2006-12-07 | 661-695-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | BKFD NORTH | CA |
| 2006-11-29 | 530-510-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | REDDING | CA |
| 2006-11-29 | 530-798-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | GRVY MAIN | CA |
| 2006-11-22 | 760-561-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | VTVL ADLN | CA |
| 2006-11-22 | 760-563-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | WRWD PHLN | CA |
| 2006-11-22 | 760-669-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | VTVL HSPR | CA |
| 2006-11-22 | 760-810-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | VTVL APVY | CA |
| 2006-11-22 | 760-972-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | INDIO | CA |
| 2006-11-22 | 858-652-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LA JOLLA | CA |
| 2006-11-22 | 909-939-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | RUNNINGSPG | CA |
| 2006-11-16 | 858-746-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | POWAY | 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.