hello Im newbie here.
i have the same problem, I’ve contacted the hosting Server.
the answer:
We help you to check domain lookup and ping facebook.com directly from the hosting server seems to be no obstacle sir.
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root@server43046x [~]# host facebook.com
facebook.com has address 173.252.110.27
facebook.com has IPv6 address 2a03:2880:2110:df07:face:b00c:0:1
facebook.com mail is handled by 10 msgin.t.facebook.com.
root@server43046x [~]# ping facebook.com
PING facebook.com (173.252.110.27) 56(84) bytes of data.
64 bytes from edge-star-shv-13-frc1.facebook.com (173.252.110.27): icmp_seq=1 ttl=85 time=241 ms
64 bytes from edge-star-shv-13-frc1.facebook.com (173.252.110.27): icmp_seq=2 ttl=85 time=242 ms
64 bytes from edge-star-shv-13-frc1.facebook.com (173.252.110.27): icmp_seq=3 ttl=85 time=241 ms
64 bytes from edge-star-shv-13-frc1.facebook.com (173.252.110.27): icmp_seq=4 ttl=85 time=241 ms
64 bytes from edge-star-shv-13-frc1.facebook.com (173.252.110.27): icmp_seq=5 ttl=85 time=241 ms
is there any way to fix it? Thanks.