curl -o /dev/null http://engine02.prod.qc.offercal.com:49157/void

        time_namelookup:  0.150
           time_connect:  0.151
     time_starttransfer:  0.152
                        ----------
             time_total:  0.152

curl -o /dev/null http://192.168.100.10:49157/void # use IP directly

                  time_namelookup:  0.000
           time_connect:  0.002
     time_starttransfer:  0.003
                        ----------
             time_total:  0.003

time dig @192.168.100.4 engine02.prod.qc.offercal.com

        real 0m0.009s
        user 0m0.004s
        sys  0m0.004s

time host engine02.prod.qc.offercal.com

        engine02.prod.qc.offercal.com has address 192.168.100.10
        real    0m0.011s
        user    0m0.006s
        sys     0m0.004s

[root@gateway01 ~]# cat /etc/resolv.conf
nameserver 192.168.100.4

05:57:52.303 connect(3) = 0
05:57:52.303 sendmmsg(3, ["1261122jarthon-architecte3"..., "2531122jarthon-architecte3"...] , 2) = 2
05:57:52.303 poll([{fd=3, events=POLLIN}], 1, 5000) = 1
05:57:52.303 ioctl(3, FIONREAD, [56]) = 0
05:57:52.303 recvfrom(3, "1262012001122jarthon-architecte3"...) = 56
05:57:52.304 poll([{fd=3, events=POLLIN}], 1, 4999) = 1
05:57:52.373 ioctl(3, FIONREAD, [96]) = 0
05:57:52.373 recvfrom(3, "2532012001122jarthon-architecte3"...) = 96
05:57:52.373 close(3) = 0

$ dig AAAA jarthon-architecte.com

;; AUTHORITY SECTION:
jarthon-architecte.com. 180 IN  SOA ns0.dnsmadeeasy.com. dns.dnsmadeeasy.com. 2008010120 43200 3600 1209600 180

;; Query time: 86 msec
;; SERVER: ::1#53(::1)