Here is the information when I encounter slow access.
$ curl -i https://dualsub.netlify.app/
HTTP/2 200
cache-control: public, max-age=0, must-revalidate
content-length: 881
content-type: text/html; charset=UTF-8
date: Sun, 15 Nov 2020 10:38:17 GMT
etag: "233033ef3d45ad9b6d2937803d814e76-ssl"
strict-transport-security: max-age=31536000; includeSubDomains; preload
age: 86989
server: Netlify
x-nf-request-id: 00485cae-1239-4142-b844-a880b7894728-916927
<!DOCTYPE html>
[truncated]
I executed below commands right after the curl command.
$ nslookup dualsub.netlify.app
Server: 127.0.0.1
Address: 127.0.0.1#53
Non-authoritative answer:
Name: dualsub.netlify.app
Address: 157.230.45.115
Name: dualsub.netlify.app
Address: 178.128.17.49
Name: dualsub.netlify.app
Address: 2400:6180:0:d1::4df:d001
Name: dualsub.netlify.app
Address: 2400:6180:0:d1::575:a001
$ ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=116 time=17.0 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=116 time=16.9 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=116 time=17.0 ms
64 bytes from 8.8.8.8: icmp_seq=5 ttl=116 time=16.9 ms
64 bytes from 8.8.8.8: icmp_seq=6 ttl=116 time=17.2 ms
64 bytes from 8.8.8.8: icmp_seq=7 ttl=116 time=17.1 ms
64 bytes from 8.8.8.8: icmp_seq=8 ttl=116 time=16.9 ms
64 bytes from 8.8.8.8: icmp_seq=9 ttl=116 time=17.1 ms
64 bytes from 8.8.8.8: icmp_seq=10 ttl=116 time=16.9 ms
^C
--- 8.8.8.8 ping statistics ---
11 packets transmitted, 9 received, 18.1818% packet loss, time 10050ms
rtt min/avg/max/mdev = 16.876/16.992/17.181/0.105 ms
$ ping 1.1.1.1
PING 1.1.1.1 (1.1.1.1) 56(84) bytes of data.
64 bytes from 1.1.1.1: icmp_seq=1 ttl=55 time=169 ms
64 bytes from 1.1.1.1: icmp_seq=2 ttl=55 time=168 ms
64 bytes from 1.1.1.1: icmp_seq=3 ttl=55 time=168 ms
64 bytes from 1.1.1.1: icmp_seq=4 ttl=55 time=168 ms
64 bytes from 1.1.1.1: icmp_seq=5 ttl=55 time=168 ms
64 bytes from 1.1.1.1: icmp_seq=6 ttl=55 time=168 ms
64 bytes from 1.1.1.1: icmp_seq=7 ttl=55 time=168 ms
64 bytes from 1.1.1.1: icmp_seq=9 ttl=55 time=169 ms
64 bytes from 1.1.1.1: icmp_seq=10 ttl=55 time=168 ms
^C
--- 1.1.1.1 ping statistics ---
10 packets transmitted, 9 received, 10% packet loss, time 9055ms
rtt min/avg/max/mdev = 167.841/168.350/168.688/0.222 ms