IP location for 128.17.43.56 is Cambridge, United States

IP:	128.17.43.56
Country:	United States (US)
Region:	MA
City:	Cambridge
Latitude:	42.3741
Longitude:	-71.1072
Zip code:	02238
Area code:	617
Reverse DNS:	si56.mta.exacttarget.com

IP information

Class A:	128
Class B:	128.17
Class C:	128.17.43

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