I get this when I ping an IP:

21:31:50.136623 IP SITE_IP > 173.194.33.4: ICMP echo request, id 14941, seq 1, length 64
21:31:51.136138 IP SITE_IP > 173.194.33.4: ICMP echo request, id 14941, seq 2, length 64
21:31:52.136118 IP SITE_IP > 173.194.33.4: ICMP echo request, id 14941, seq 3, length 64
21:31:53.136129 IP SITE_IP > 173.194.33.4: ICMP echo request, id 14941, seq 4, length 64
21:31:54.136102 IP SITE_IP > 173.194.33.4: ICMP echo request, id 14941, seq 5, length 64
21:31:55.136153 IP SITE_IP > 173.194.33.4: ICMP echo request, id 14941, seq 6, length 64

and when I ping a domain:

21:29:33.631583 IP 74.125.189.19.52085 > SITE_IP.domain: 28952 A? google.com.MY_DOMAIN. (42)
21:29:38.626553 IP SITE_IP.42280 > 8.8.4.4.domain: 52435+ A? google.com.MY_DOMAIN. (42)
21:29:38.652675 IP 74.125.189.22.63658 > SITE_IP.domain: 36178 A? google.com.MY_DOMAIN. (42)
21:29:43.631626 IP SITE_IP.48205 > 8.8.8.8.domain: 52435+ A? google.com.MY_DOMAIN. (42)

The pinging of a domain is what worries me, because it looks like it is checking my DNS files for the resolution.

Here is etc/resolv.conf

nameserver 8.8.8.8
nameserver 8.8.4.4

/etc/hosts

127.0.0.1               localhost localhost.localdomain localhost4 localhost4.localdomain4
::1             localhost localhost.localdomain localhost6 localhost6.localdomain6
SITE_iP            server.MY_DOMAIN.com server

Will also add that I am seeing a number of 'SERVFAIL'..

I have no idea what could be causing this problem. If there is any other information I need to provide, let me know. I'm using CentOS.