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 |
|---|---|---|---|---|---|
| 2008-06-23 | 707-501-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | NAPA | CA |
| 2008-06-23 | 707-741-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BENICIA | CA |
| 2008-06-23 | 707-775-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PTLM MAIN | CA |
| 2008-06-23 | 707-794-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PTLM SWIFT | CA |
| 2008-06-23 | 707-879-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | TOMALES | CA |
| 2008-06-23 | 707-934-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SONOMA | CA |
| 2008-06-23 | 707-947-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | YOUNTVILLE | CA |
| 2008-06-23 | 925-206-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ANTIOCH | CA |
| 2008-06-23 | 925-273-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LIVERMORE | CA |
| 2008-06-23 | 925-418-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ECONTRCOST | CA |
| 2008-06-23 | 925-524-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CLAYTON | CA |
| 2008-06-19 | 818-436-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CANOGAPARK | CA |
| 2008-05-15 | 925-808-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CONCORD | CA |
| 2008-03-26 | 949-333-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | IRVINE | CA |
| 2008-03-12 | 650-731-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNFC JUNPR | CA |
| 2008-03-07 | 831-704-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | FELTON | CA |
| 2008-02-28 | 408-600-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNJS SOUTH | CA |
| 2008-01-10 | 209-416-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | MODESTO | CA |
| 2008-01-10 | 619-456-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | EL CAJON | CA |
| 2007-11-15 | 619-450-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNDG SNDG | CA |
| 2007-11-15 | 619-450-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNDG SNDG | CA |
| 2007-11-14 | 916-509-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | ELK GROVE | CA |
| 2007-11-09 | 925-983-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BSHP RNCH | CA |
| 2007-10-19 | 951-603-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | TEMSCL CNY | CA |
| 2007-10-01 | 818-854-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CANOGAPARK | CA |
| 2007-08-20 | 760-884-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ESCONDIDO | CA |
| 2007-08-13 | 424-750-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | INGLEWOOD | CA |
| 2007-08-13 | 424-750-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | INGLEWOOD | CA |
| 2007-07-23 | 858-461-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | DEL MAR | CA |
| 2007-06-12 | 909-689-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ETIWANDA | CA |
| 2007-05-17 | 714-465-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | HUNTITNBCH | CA |
| 2007-05-11 | 619-519-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CORONADO | CA |
| 2007-05-11 | 619-878-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CORONADO | CA |
| 2007-05-04 | 760-385-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | OCSD PDTN | CA |
| 2007-04-20 | 916-380-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | RSVL MAIN | CA |
| 2007-04-20 | 916-380-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | RSVL MAIN | CA |
| 2007-04-20 | 916-745-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | RSVL CTHT | CA |
| 2007-04-06 | 858-947-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | DEL MAR | CA |
| 2007-03-30 | 760-452-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ENCINITAS | CA |
| 2007-03-30 | 760-452-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ENCINITAS | CA |
| 2007-03-30 | 760-593-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SAN MARCOS | CA |
| 2007-03-29 | 714-361-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SANTA ANA | CA |
| 2007-03-29 | 714-361-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SANTA ANA | CA |
| 2007-03-20 | 858-312-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | RNCHOBRNDO | CA |
| 2007-03-20 | 858-524-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | RNCHOBRNDO | CA |
| 2007-03-13 | 619-324-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | HARBSNALPN | CA |
| 2007-03-13 | 619-378-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CAMPO | CA |
| 2007-03-13 | 760-239-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | RAMONA | CA |
| 2007-03-13 | 760-359-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CALIPATRIA | CA |
| 2007-03-13 | 760-587-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BRAWLEY | 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.