NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 2026-04
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 |
|---|---|---|---|---|---|
| 617-507 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOSTON | MA | |
| 617-514 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DORCHESTER | MA | |
| 617-516 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ROXBURY | MA | |
| 617-531 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOSTON | MA | |
| 617-535 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOSTON | MA | |
| 617-580 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CHARLESTN | MA | |
| 617-588 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CAMBRIDGE | MA | |
| 617-597 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NEWTON | MA | |
| 617-600 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WATERTOWN | MA | |
| 617-602 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ROXBURY | MA | |
| 617-603 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOSTON | MA | |
| 617-607 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WATERTOWN | MA | |
| 617-608 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BROOKLINE | MA | |
| 617-614 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NEWTON | MA | |
| 617-618 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NEWTON | MA | |
| 617-649 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CAMBRIDGE | MA | |
| 617-652 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ROXBURY | MA | |
| 617-668 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WATERTOWN | MA | |
| 617-681 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CHARLESTN | MA | |
| 617-684 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SOMERVILLE | MA | |
| 617-687 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | QUINCY | MA | |
| 617-701 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SO BOSTON | MA | |
| 617-702 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SOMERVILLE | MA | |
| 617-704 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DORCHESTER | MA | |
| 617-706 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | QUINCY | MA | |
| 617-712 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CHARLESTN | MA | |
| 617-714 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CAMBRIDGE | MA | |
| 617-716 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | EASTBOSTON | MA | |
| 617-752 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SO BOSTON | MA | |
| 617-819 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CHELSEA | MA | |
| 617-831 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NEWTON | MA | |
| 617-845 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | QUINCY | MA | |
| 617-860 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BROOKLINE | MA | |
| 617-874 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | EASTBOSTON | MA | |
| 617-890 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | QUINCY | MA | |
| 617-892 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOSTON | MA | |
| 617-896 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOSTON | MA | |
| 617-914 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CAMBRIDGE | MA | |
| 617-917 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | EVERETT | MA | |
| 617-941 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SOMERVILLE | MA | |
| 617-949 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CAMBRIDGE | MA | |
| 617-960 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOSTON | MA | |
| 617-977 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BELMONT | MA | |
| 617-991 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BROOKLINE | MA | |
| 617-992 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BROOKLINE | MA | |
| 617-995 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CAMBRIDGE | MA | |
| 618-331 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CARBONDALE | IL | |
| 618-381 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | COLLINSVL | IL | |
| 619-210 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CHULAVISTA | CA | |
| 619-212 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | EL CAJON | CA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 2026-04 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.