Most of the cases its the DNS that makes the delay because amazon is really scalable.
I had similar issues with my ISP and was able to resolve its quickly by changing the DNS servers.
Try changing your DNS to Google DNSIP V4 8.8.8.8 8.8.4.4
IP V6
2001:4860:4860::88882001:4860:4860::8844
Google Public Dns Documentation
Or use OPEN DNS
208.67.220.220208.67.222.222