Small tip - How to add your own Nameservers to Arch Linux when using dhcpFollow @ggarron
If you use dhcp to get the IP on your Arch Linux, you will use the Network DNS server, and that is good, if that DNS server works well, but I have seen in some networks they resolv some addresses to 18.104.22.168, do not know why but to fix this you may do this, if working on Arch.
On /etc/rc.conf file you will have some line like this
and now you must create (if it does not exists) a file named /etc/resolv.conf.head and add there your stuff, something like this
nameserver 22.214.171.124 nameserver 126.96.36.199
This way these nameserver will always be on top of the local DNS, it is maybe a bad idea for speed, but at least you will be sure it will work.