Have a look at:
https://www.inex.ie/about/memberlist
If you're using any of those ISPs to connect to servers hosted by any of the other members of the list you'll see faster ping times than you would with a host in the US
eg. pinging hosting365.ie from my desktop:
blacknight@sicilia:~$ ping hosting365.ie
PING hosting365.ie (82.195.144.16) 56(84) bytes of data.
64 bytes from
Welcome to Ireland's largest Hosting Company - Hosting 365 (82.195.144.16): icmp_seq=1 ttl=57 time=31.4 ms
64 bytes from
Welcome to Ireland's largest Hosting Company - Hosting 365 (82.195.144.16): icmp_seq=2 ttl=57 time=30.6 ms
64 bytes from
Welcome to Ireland's largest Hosting Company - Hosting 365 (82.195.144.16): icmp_seq=3 ttl=57 time=30.9 ms
compared to:
blacknight@sicilia:~$ ping mediatemple.net
PING mediatemple.net (64.207.129.35) 56(84) bytes of data.
64 bytes from mt-serv-01-01.mediatemple.net (64.207.129.35): icmp_seq=1 ttl=53 time=174 ms
64 bytes from mt-serv-01-01.mediatemple.net (64.207.129.35): icmp_seq=2 ttl=53 time=175 ms
64 bytes from mt-serv-01-01.mediatemple.net (64.207.129.35): icmp_seq=3 ttl=53 time=175 ms
64 bytes from mt-serv-01-01.mediatemple.net (64.207.129.35): icmp_seq=4 ttl=53 time=175 ms