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 |
|---|---|---|---|---|---|
| 2005-08-18 | 619-512-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | NATIONALCY | CA |
| 2005-08-18 | 619-512-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | NATIONALCY | CA |
| 2005-08-18 | 619-956-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | EL CAJON | CA |
| 2005-08-18 | 619-956-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | EL CAJON | CA |
| 2005-08-18 | 619-956-9XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | EL CAJON | CA |
| 2005-08-16 | 831-718-9XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MONTEREY | CA |
| 2005-08-11 | 714-849-0XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | HUNTITNBCH | CA |
| 2005-07-27 | 562-912-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LONG BEACH | CA |
| 2005-07-08 | 818-286-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | NO HOLLYWD | CA |
| 2005-07-08 | 818-286-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | NO HOLLYWD | CA |
| 2005-07-08 | 818-286-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | NO HOLLYWD | CA |
| 2005-07-08 | 818-286-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | NO HOLLYWD | CA |
| 2005-07-08 | 818-286-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | NO HOLLYWD | CA |
| 2005-07-01 | 714-849-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | HUNTITNBCH | CA |
| 2005-07-01 | 714-852-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SANTA ANA | CA |
| 2005-06-28 | 619-878-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CORONADO | CA |
| 2005-06-28 | 619-996-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CORONADO | CA |
| 2005-06-28 | 619-996-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CORONADO | CA |
| 2005-06-28 | 619-996-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CORONADO | CA |
| 2005-06-28 | 619-996-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CORONADO | CA |
| 2005-06-28 | 858-304-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | RNCHOBRNDO | CA |
| 2005-06-27 | 951-332-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MIRA LOMA | CA |
| 2005-06-27 | 951-471-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ELSINORE | CA |
| 2005-05-31 | 760-992-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PALM SPG | CA |
| 2005-05-26 | 909-992-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | POMONA | CA |
| 2005-05-22 | 858-227-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | RNCHOSANFE | CA |
| 2005-05-22 | 858-227-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | RNCHOSANFE | CA |
| 2005-05-22 | 858-227-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | RNCHOSANFE | CA |
| 2005-05-22 | 858-227-9XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | RNCHOSANFE | CA |
| 2005-05-22 | 858-400-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | RNCHOSANFE | CA |
| 2005-05-22 | 858-400-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | RNCHOSANFE | CA |
| 2005-05-20 | 619-618-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNDG SNDG | CA |
| 2005-05-20 | 619-618-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNDG SNDG | CA |
| 2005-05-20 | 619-793-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNDG SNDG | CA |
| 2005-05-10 | 858-227-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | RNCHOSANFE | CA |
| 2005-05-05 | 760-290-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SAN MARCOS | CA |
| 2005-05-03 | 818-737-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CANOGAPARK | CA |
| 2005-05-03 | 818-737-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CANOGAPARK | CA |
| 2005-03-31 | 661-370-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | DELANO | CA |
| 2005-03-31 | 661-438-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | WASCO | CA |
| 2005-03-31 | 661-606-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | ARVIN | CA |
| 2005-03-31 | 661-630-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | SHAFTER | CA |
| 2005-03-31 | 661-745-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | TAFT | CA |
| 2005-03-31 | 661-750-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | TEHACHAPI | CA |
| 2005-03-31 | 661-927-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | MCFARLAND | CA |
| 2005-03-10 | 858-300-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNDG LVTA | CA |
| 2005-03-09 | 714-849-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | HUNTITNBCH | CA |
| 2005-03-09 | 714-913-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SANTA ANA | CA |
| 2005-03-09 | 818-737-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CANOGAPARK | CA |
| 2005-03-09 | 818-921-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | RESEDA | 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.