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 |
|---|---|---|---|---|---|
| 2005-03-09 | 925-226-9XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PLEASANTON | CA |
| 2005-03-07 | 760-520-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ESCONDIDO | CA |
| 2005-03-07 | 760-520-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ESCONDIDO | CA |
| 2005-03-07 | 760-557-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ENCINITAS | CA |
| 2005-03-07 | 760-557-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ENCINITAS | CA |
| 2005-03-07 | 760-645-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | FALLBROOK | CA |
| 2005-03-07 | 760-990-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | FALLBROOK | CA |
| 2005-03-07 | 858-726-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | POWAY | CA |
| 2005-03-07 | 858-726-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | POWAY | CA |
| 2004-11-23 | 858-753-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | RNCHOBRNDO | CA |
| 2004-10-22 | 858-901-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | RNCHOPNQTS | CA |
| 2004-08-31 | 619-241-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNDG SNDG | CA |
| 2004-08-31 | 619-241-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNDG SNDG | CA |
| 2004-08-31 | 760-496-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | OCSD CRLS | CA |
| 2004-05-21 | 760-238-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | INDIO | CA |
| 2004-05-21 | 760-392-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | EAGLE MT | CA |
| 2004-05-21 | 760-469-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PALMDESERT | CA |
| 2004-05-21 | 951-572-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BANNING | CA |
| 2004-05-17 | 714-689-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SANTA ANA | CA |
| 2004-04-27 | 650-253-0XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MT VIEW | CA |
| 2004-04-27 | 650-253-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MT VIEW | CA |
| 2004-04-27 | 650-253-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MT VIEW | CA |
| 2004-04-27 | 650-253-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MT VIEW | CA |
| 2004-04-27 | 650-253-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MT VIEW | CA |
| 2004-04-27 | 650-253-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MT VIEW | CA |
| 2004-04-27 | 650-253-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MT VIEW | CA |
| 2004-04-27 | 650-253-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MT VIEW | CA |
| 2004-04-27 | 650-253-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MT VIEW | CA |
| 2004-04-27 | 650-253-9XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MT VIEW | CA |
| 2004-04-21 | 858-300-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNDG LVTA | CA |
| 2004-04-21 | 858-300-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNDG LVTA | CA |
| 2004-02-17 | 714-689-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SANTA ANA | CA |
| 2004-01-16 | 714-689-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SANTA ANA | CA |
| 2004-01-13 | 858-668-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | POWAY | CA |
| 2003-12-18 | 760-705-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ESCONDIDO | CA |
| 2003-10-31 | 858-375-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | POWAY | CA |
| 2003-09-24 | 925-201-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PLEASANTON | CA |
| 2003-09-23 | 530-204-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | DAVIS | CA |
| 2003-09-23 | 530-207-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | WOODLAND | CA |
| 2003-09-23 | 530-216-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | MARYSVILLE | CA |
| 2003-09-23 | 530-217-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | AUBN MAIN | CA |
| 2003-09-23 | 530-303-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | PLVL WEST | CA |
| 2003-09-23 | 530-313-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | SHINGLESPG | CA |
| 2003-09-23 | 916-209-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | LINCOLN | CA |
| 2003-09-23 | 916-237-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | RIO LINDA | CA |
| 2003-09-23 | 916-251-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | SO PLACER | CA |
| 2003-09-10 | 707-244-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ST HELENA | CA |
| 2003-08-22 | 408-461-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SAN MARTIN | CA |
| 2003-08-22 | 707-301-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | VACAVILLE | CA |
| 2003-08-22 | 831-219-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | APTOS | 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.