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 |
|---|---|---|---|---|---|
| 631-791 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | PTJEFFERSN | NY | |
| 631-820 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | RONKONKOMA | NY | |
| 631-832 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BAYPORT | NY | |
| 631-837 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NORTHPORT | NY | |
| 631-850 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | W COMMACK | NY | |
| 631-857 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | COLDSPGHBR | NY | |
| 631-861 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | FARMINGDL | NY | |
| 631-869 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BELLPORT | NY | |
| 631-879 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | PATCHOGUE | NY | |
| 631-883 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BAYPORT | NY | |
| 631-892 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BAY SHORE | NY | |
| 631-913 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | RONKONKOMA | NY | |
| 631-947 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BELLPORT | NY | |
| 631-962 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | FARMINGDL | NY | |
| 631-963 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | CENTRAISLP | NY | |
| 631-964 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | DEER PARK | NY | |
| 631-978 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | PTJEFFERSN | NY | |
| 631-982 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | SMITHTOWN | NY | |
| 631-983 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BABYLON | NY | |
| 631-993 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | COMMACK | NY | |
| 631-995 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | YAPHANK | NY | |
| 646-344 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN01 | NY | |
| 646-495 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN01 | NY | |
| 646-981 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN01 | NY | |
| 716-541 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BUFFALO | NY | |
| 716-730 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | WILLIAMSVL | NY | |
| 716-796 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BUFFALO | NY | |
| 716-799 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | TONAWANDA | NY | |
| 716-932 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | WILLIAMSVL | NY | |
| 718-210 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY | |
| 718-247 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN08 | NY | |
| 718-248 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN08 | NY | |
| 718-269 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN08 | NY | |
| 718-290 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY | |
| 718-301 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN10 | NY | |
| 718-304 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN05 | NY | |
| 718-313 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN14 | NY | |
| 718-316 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN08 | NY | |
| 718-371 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN08 | NY | |
| 718-532 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY | |
| 718-534 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY | |
| 718-535 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN07 | NY | |
| 718-536 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN04 | NY | |
| 718-559 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN09 | NY | |
| 718-663 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN08 | NY | |
| 718-673 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN13 | NY | |
| 718-683 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN08 | NY | |
| 718-701 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN15 | NY | |
| 718-709 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN10 | NY | |
| 718-744 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY |
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.