It's normal to Bitcoin Forum
~$ ping -s 1 -c 1 bitcointalk.org
PING bitcointalk.org (107.21.115.227) 1(29) bytes of data.
--- bitcointalk.org ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms
My trouble is:
~$ nslookup bitcointalk.org
;; Got SERVFAIL reply from xxx.xxx.xxx.xxx, trying next server
Server: xxx.xxx.xxx.xxx
Address: xxx.xxx.xxx.xxx#53
Non-authoritative answer:
Name: bitcointalk.org
Address: 8.7.198.45
What is 8.7.198.45? Is it Bitcoin Forum's IDC?