NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/18/2026
Which carriers received which NPA-NXX prefixes, and where. Assignments are initial assignments from NANPA records — because of number portability, the current serving carrier of individual numbers may differ. For finer-grained activity, see the thousands-block view above.
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| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 818-922 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | VAN NUYS | CA | |
| 818-924 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNFN SPLV | CA | |
| 818-939 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | VAN NUYS | CA | |
| 818-961 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CANOGAPARK | CA | |
| 818-977 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BRBN BRBN | CA | |
| 818-979 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNFN SNFN | CA | |
| 831-316 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SANTA CRUZ | CA | |
| 831-337 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BOULDERCRK | CA | |
| 831-531 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | APTOS | CA | |
| 831-533 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOULDERCRK | CA | |
| 831-534 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FELTON | CA | |
| 831-535 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SANTA CRUZ | CA | |
| 831-536 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WATSONVL | CA | |
| 832-200 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HOUSTON | TX | |
| 832-201 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HOUSTON | TX | |
| 832-202 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HOUSTON | TX | |
| 832-203 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HOUSTON | TX | |
| 832-204 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HOUSTON | TX | |
| 832-235 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7239 | BAMMEL | TX | |
| 832-327 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HSTNSUBURB | TX | |
| 832-369 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HOUSTON | TX | |
| 832-436 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BAMMEL | TX | |
| 832-536 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7239 | KEMAH | TX | |
| 845-207 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7650 | BREWSTER | NY | |
| 845-259 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7650 | BREWSTER | NY | |
| 845-284 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7650 | LAKELAND | NY | |
| 845-314 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NYACK | NY | |
| 845-501 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NANUET | NY | |
| 845-531 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7650 | CARMEL | NY | |
| 845-678 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | SPRING VLY | NY | |
| 845-761 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | PIERMONT | NY | |
| 845-875 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NYACK | NY | |
| 847-221 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PALATINE | IL | |
| 847-227 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | DESPLAINES | IL | |
| 847-261 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | FRANKLINPK | IL | |
| 847-273 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | ROSELLE | IL | |
| 847-278 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ROSELLE | IL | |
| 847-307 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LAKEZURICH | IL | |
| 847-320 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LAKEZURICH | IL | |
| 847-324 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | SKOKIE | IL | |
| 847-325 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | WHEELING | IL | |
| 847-349 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | FRANKLINPK | IL | |
| 847-371 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LIBERTYVL | IL | |
| 847-378 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ELK GROVE | IL | |
| 847-385 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ARLIGTNHTS | IL | |
| 847-388 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MUNDELEIN | IL | |
| 847-400 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | NORTHBROOK | IL | |
| 847-403 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WHEELING | IL | |
| 847-423 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SKOKIE | IL | |
| 847-430 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PARK RIDGE | IL |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/18/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.