Input a switch CLLI code:
(Building CLLIs will not work here)
If you do not know the full CLLI for the switch you're looking for - use the "Switch Listings By: CLLI" link on the left, where you can search by partial CLLI.

Information on: SMFRCTPUDS0
English Name:STAMFORD
Switch Type:N/A
Host CLLI (if remote):N/A
LATA:Connecticut (920)
Exchanges Served:1
Building CLLI:SMFRCTPU (See DSL Reports information on this wirecenter)
Street Address:21 Harbor Vw
Stamford, CT
Lat/Long:41.03842, -73.53939
V/H Coord:4897, 1386
SS7 Point Code:N/A
Served Exchanges:860-481
Served Rate Centers:PUTNAM, CT
Served Companies:LEVEL 3 COMMUNICATIONS, LLC - (4800)
Member of The Internet Defense League