Your ping times to Google (YouTube returns a Google address) were really low. Either its servers are located close to you or there is a good internet line between your ISP and them.
It might be fun to check this. Enter this command:
TRACERT YouTube.com
I get some interesting stuff when I look up the IP addresses along the route. For instance, the trace goes through AT&T and then through a network owned by Apple before it reaches YouTube.
I get
2 10 ms 3 ms 5 ms 2600:4040:5090::1
3 2 ms 3 ms 6 ms 2600:4000:1:128::38
4 9 ms 9 ms 12 ms 0.csi1.CMBRMABE-MSE01-BB-SU1.ALTER.NET [2001:506:0:110::2]
5 * * * Request timed out.
6 * * * Request timed out.
7 10 ms 9 ms 9 ms 2600:802::81
8 10 ms 12 ms 8 ms 2600:802:78f::42
9 * * * Request timed out.
10 11 ms 10 ms 11 ms 2001:4860:0:1::17b3
11 11 ms 9 ms 8 ms lga25s78-in-x0e.1e100.net [2607:f8b0:4006:81e::200e]
Trace complete.