hktalent / fastdns

fastDNS

fastDNS

What the hell is this? I discovered by chance that the impact of DNS on the network is extremely severe. So I thought, how to choose the best DNS pair?

What should I pay attention to?

• Use a different IP (VPN) to go out, need to run once and choose the best DNS to set up
• This version does not provide a test domain list for the time being. You can also create your own domain list that you frequently visit. The tool will help you calculate which DNS is optimal.
• The best DNS obtained by the same access list in different regions (regions) is different.
• By default, China’s DNS list is used for testing and filtering.
• By default, ping is not enabled for testing.

How use

vi yourDomainList.txt
go build -o fastDNS Main.go
./fastDNS -h
./fastDNS -f yourDomainList.txt

out like:

Top 5 DNS IP addresses: 2001
0       0.001001        223.6.6.232
1       0.035905        223.6.6.133
2       0.036049        223.5.5.124
3       0.036390        223.5.5.204
4       0.039645        223.6.6.81

next version

• Start a DNS server
• Monitor and record all domains (DNS) that your system makes requests for when testing the best DNS
• Automatically recalculate optimal DNS when your exit IP changes
• Caching DNS records for the fastest response to local DNS
• When responding to local DNS, the best result will be selected based on the current egress IP.