[CentOS] inconsistent DNS results - ping vs dig vs nslookup

[robert henrichs]

I am getting what I believe to be inconsistent replies/results from 
my CentOs machine, trying to ping URLs.  Pinging by URL fails the DNS 
lookup, while pinging the IP address (that should have been returned) 
works.  The DNS lookup also fails NSLOOKUP, but interestingly, dig 
and wget return A records with the correct IP.

Robert Henrichs.

         -  =  -  =  -        -  =  -  =  -        -  =  -  =  - 
   -  =  -  =  -

    (INFO/examples:)


cat /etc/sysconfig/network-scripts/ifcfg-eth0
cat /etc/resolv.conf


PBX in a Flash PURPLE Daemon Status - Version 1.8.1  Released on 041211
System Information
   Asterisk   = ONLINE  | Dahdi     = ONLINE  | MySQL     = ONLINE
   SSH        = ONLINE  | Apache    = ONLINE  | Iptables  = ONLINE
   Fail2ban   = ONLINE  | Internet  = OFFLINE | Ip6Tables = ONLINE
   BlueTooth  = ONLINE  | Hidd      = ONLINE  | NTPD      = ONLINE
   SendMail   = ONLINE  | Samba     = OFFLINE | Webmin    = ONLINE
   Ethernet0  = ONLINE  | Ethernet1 = N/A     | Wlan0     = N/A

   PBX in a Flash Version   = 1.7.5.6
   FreePBX Version          = 2.8.1.4
   Running Asterisk Version = 1.8.3.3
   Asterisk Source Version  = 1.8.3.3
   Dahdi Source Version     = 2.4.1.2+2.4.1
   Libpri Source Version    = 1.4.11.5
   IP Address               = 192.168.70.40 on eth0
   Operating System         = CentOS release 5.6 (Final)
   Kernel Version           = 2.6.18-238.9.1.el5 - 32 Bit



root at pbx:/etc/sysconfig/network-scripts $ cat ifcfg-eth0
# Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+
DEVICE=eth0
TYPE=ethernet
BOOTPROTO=none
BROADCAST=192.168.70.255
IPADDR=192.168.70.40
NETMASK=255.255.255.0
GATEWAY=192.168.70.2
HWADDR=00:1D:7D:26:31:D0
ONBOOT=yes
DHCP_HOSTNAME=pbx.local

root at pbx:/etc/sysconfig/network-scripts $



root at pbx:/etc $ cat resolv.conf
search isp.com
   nameserver 216.146.35.35
   nameserver 216.146.36.36
   nameserver 8.8.8.8


root at pbx:/etc $ ping www.henrichs.org
ping: unknown host www.henrichs.org


root at pbx:/etc $ ping 69.64.155.165
PING 69.64.155.165 (69.64.155.165) 56(84) bytes of data.
64 bytes from 69.64.155.165: icmp_seq=1 ttl=238 time=92.9 ms
64 bytes from 69.64.155.165: icmp_seq=2 ttl=238 time=89.1 ms
64 bytes from 69.64.155.165: icmp_seq=3 ttl=238 time=89.1 ms
64 bytes from 69.64.155.165: icmp_seq=4 ttl=238 time=89.7 ms
64 bytes from 69.64.155.165: icmp_seq=5 ttl=238 time=88.3 ms
64 bytes from 69.64.155.165: icmp_seq=6 ttl=238 time=90.6 ms

--- 69.64.155.165 ping statistics ---
6 packets transmitted, 6 received, 0% packet loss, time 5002ms
rtt min/avg/max/mdev = 88.398/90.013/92.994/1.514 ms


root at pbx:/etc $ tracert www.henrichs.org
www.henrichs.org: Temporary failure in name resolution
Cannot handle "host" cmdline arg `www.henrichs.org' on position 1 (argc 1)


root at pbx:/etc $ dig www.henrichs.org

; <<>> DiG 9.3.6-P1-RedHat-9.3.6-16.P1.el5 <<>> www.henrichs.org
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 48631
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 5, ADDITIONAL: 0

;; QUESTION SECTION:
;www.henrichs.org.              IN      A

;; ANSWER SECTION:
www.henrichs.org.       3566    IN      CNAME   ehost-services119.com.
ehost-services119.com.  3565    IN      A       69.64.155.165

;; AUTHORITY SECTION:
ehost-services119.com.  3565    IN      NS      dns1.name-services.com.
ehost-services119.com.  3565    IN      NS      dns2.name-services.com.
ehost-services119.com.  3565    IN      NS      dns3.name-services.com.
ehost-services119.com.  3565    IN      NS      dns4.name-services.com.
ehost-services119.com.  3565    IN      NS      dns5.name-services.com.

;; Query time: 18 msec
;; SERVER: 216.146.35.35#53(216.146.35.35)
;; WHEN: Wed Jun 22 12:17:53 2011
;; MSG SIZE  rcvd: 194


root at pbx:/etc $ wget www.henrichs.org
--2011-06-22 12:18:38--  http://www.henrichs.org/
Resolving www.henrichs.org... failed: Temporary failure in name resolution.
wget: unable to resolve host address `www.henrichs.org'
root at pbx:/etc $ nslookup www.henrichs.org
Server:         216.146.35.35
Address:        216.146.35.35#53

Non-authoritative answer:
www.henrichs.org        canonical name = ehost-services119.com.
Name:   ehost-services119.com
Address: 69.64.155.165


root at pbx:/etc $ route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.70.0    *               255.255.255.0   U     0      0        0 eth0
169.254.0.0     *               255.255.0.0     U     0      0        0 eth0
default         192.168.70.2    0.0.0.0         UG    0      0        0 eth0
root at pbx:/etc $