shell:$ nslookup -timeout=2 -retry=1 'api.braintreegateway.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
api.braintreegateway.com	canonical name = gateway-api.production.braintree-api.com.
gateway-api.production.braintree-api.com	canonical name = cdn-a.production.braintree-api.com.
Name:	cdn-a.production.braintree-api.com
Address: 159.242.242.192
Name:	cdn-a.production.braintree-api.com
Address: 159.242.242.193