About IP Address 216.21.230.0
216.21.230.0 is a public IPv4 address announced by Constant Contact, Inc under AS40444, geolocated to Waltham (North Waltham), United States.
IP geolocation identifies the registered network location, not a precise street address. Country-level accuracy is typically 95-99%; city-level accuracy varies. Learn more about IP geolocation →
Frequently Asked Questions
Where is IP 216.21.230.0 located?
IP address 216.21.230.0 is located in Waltham (North Waltham), Massachusetts, United States.
Who owns IP address 216.21.230.0?
IP 216.21.230.0 is operated by Constant Contact, Inc under autonomous system AS40444.
Is 216.21.230.0 a VPN or proxy?
No - 216.21.230.0 does not appear on public VPN, datacenter, or Tor exit lists. Use the live checker for deeper detection.