NRNumberResearch Membership · Data 09/17/2026

← Area code 860

MCIMETRO ACCESS TRANSMISSION SERVICES LLC

63 prefixes in 860 · initial assignments from the NANPA CO code file, 09/17/2026

Prefixes held by MCIMETRO ACCESS TRANSMISSION SERVICES LLC in area code 860
NPA-NXXRate centerOCNAssignedPooled
860-226 HARTFORD 7229 — —
860-254 WINDSORLKS 7229 — Yes
860-255 FARMINGTON 7229 — Yes
860-256 HARTFORD 7229 — Yes
860-259 NEWBRITAIN 7229 — Yes
860-261 BRISTOL 7229 — Yes
860-262 MIDDLETOWN 7229 — Yes
860-263 HARTFORD 7229 — Yes
860-264 SIMSBURY 7229 — Yes
860-265 ENFIELD 7229 — Yes
860-266 GLASTONBY 7229 — Yes
860-269 FARMINGTON 7229 — Yes
860-294 TORRINGTON 7229 — Yes
860-315 PUTNAM 7229 — Yes
860-316 MIDDLETOWN 7229 — Yes
860-317 PLAINFIELD 7229 — Yes
860-318 CORNWALL 7229 — Yes
860-319 NORWICH 7229 — Yes
860-321 FARMINGTON 7229 — Yes
860-322 DEEP RIVER 7229 — Yes
860-323 SIMSBURY 7229 — Yes
860-325 SIMSBURY 7229 — Yes
860-327 MANCHESTER 7229 — Yes
860-329 SOUTHINGTN 7229 — Yes
860-331 HARTFORD 7229 — Yes
860-337 COLUMBIA 7229 — Yes
860-339 OLD SAYBRK 7229 — Yes
860-341 STORRS 7229 — Yes
860-351 PLAINVILLE 7229 — Yes
860-352 CANTON 7229 — Yes
860-356 NEWBRITAIN 7229 — Yes
860-357 NEWBRITAIN 7229 — Yes
860-359 COLUMBIA 7229 — Yes
860-374 DEEP RIVER 7229 — Yes
860-375 ROCKVILLE 7229 — Yes
860-397 SHARON 7229 — Yes
860-406 SOUTHINGTN 7229 — Yes
860-414 SOUTHINGTN 7229 — Yes
860-544 COVENTRY 7229 — Yes
860-554 HADDAM 7229 — Yes
860-616 HARTFORD 7229 — Yes
860-618 TORRINGTON 7229 — Yes
860-706 HARTFORD 7229 — Yes
860-707 HARTFORD 7229 — Yes
860-713 HARTFORD 7229 — Yes
860-754 MIDDLETOWN 7229 — Yes
860-808 HARTFORD 7229 — Yes
860-813 E HAMPTON 7229 — Yes
860-814 ENFIELD 7229 — Yes
860-815 GLASTONBY 7229 — Yes
860-816 HARTFORD 7229 — Yes
860-817 HARTFORD 7229 — Yes
860-818 HARTFORD 7229 — Yes
860-819 HARTFORD 7229 — Yes
860-901 WINDSORLKS 7229 — Yes
860-902 WINDSOR 7229 — Yes
860-903 WINDSORLKS 7229 — Yes
860-904 HARTFORD 7229 — Yes
860-906 HARTFORD 7229 — Yes
860-907 WINDSOR 7229 — Yes
860-920 HARTFORD 7229 — Yes
860-973 BRISTOL 7229 — Yes
860-975 MIDDLETOWN 7229 — Yes

These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.