[Nottingham] Network question - google unreachable?!

vanschoo at speakeasy.net vanschoo at speakeasy.net
Sun Jul 29 10:52:56 BST 2007


Peter,

  Thanks for the suggestions! I tried keying in 64.233.183.104 with Firefox, and it reached google ok. So do the other 3 ip addresses you gave. It works with Safari also. Simultaneously, using the google urls still comes up with "server not found". That points to the ISP. 

Here are some commands I tried:

:~ njv$ host www.google.co.uk
;; connection timed out; no servers could be reached
:~ njv$ 
:~ njv$ ping 64.233.183.104
PING 64.233.183.104 (64.233.183.104): 56 data bytes
64 bytes from 64.233.183.104: icmp_seq=0 ttl=247 time=209.145 ms
64 bytes from 64.233.183.104: icmp_seq=1 ttl=247 time=218.604 ms
64 bytes from 64.233.183.104: icmp_seq=2 ttl=247 time=220.541 ms
^C
--- 64.233.183.104 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max/stddev = 209.145/216.097/220.541/4.979 ms
:~ njv$ 
:~ njv$ traceroute www.google.co.uk
traceroute: unknown host www.google.co.uk
:~ njv$ host www.google.com
www.google.com has address 216.239.59.99
;; connection timed out; no servers could be reached
;; connection timed out; no servers could be reached
:~ njv$ 


  It seems clear that there is a problem in the ISP's network. I will follow up with the apartment folks. I'm curious though as to how this can happen. I can believe their DNS lookup has a problem, but with such a popular site as google, that's very strange. 

 - njv


> -----Original Message-----
> From: Peter Chang [mailto:Peter.Chang at nottingham.ac.uk]
> Sent: Saturday, July 28, 2007 05:12 PM
> To: nottingham at mailman.lug.org.uk
> Subject: Re: [Nottingham] Network question - google unreachable?!
> 
> 
> On Sat, 28 Jul 2007, vanschoo at speakeasy.net wrote:
> [can't get google]
> 
> Your problem sounds very strange indeed. How are you connecting to the 
> internet?
> 
> I think you should check that your dns is working:
> 
> $ host www.google.co.uk
> 
> gives me
> 
> www.google.co.uk is an alias for www.google.com.
> www.google.com is an alias for www.l.google.com.
> www.l.google.com has address 64.233.183.104
> www.l.google.com has address 64.233.183.99
> www.l.google.com has address 64.233.183.103
> www.l.google.com has address 64.233.183.147
> 
> 
> then
> $ traceroute www.google.co.uk
>   1  192.168.0.1 (192.168.0.1)  1.508 ms  1.362 ms  1.325 ms
>   2  x.x.x.x (x.x.x.x)  13.159 ms  13.128 ms  21.078 ms
>   3  x.x.x.x (x.x.x.x)  21.044 ms  20.948 ms  24.864 ms
>   4  x.inet.ntl.com (x.x.x.x)  24.829 ms  29.776 ms  29.740 ms
>   5  nth-bb-b-so-020-0.inet.ntl.com (213.105.174.173)  38.679 ms  41.628 ms 
> 41.597 ms
>   6  tele-ic-1-as0-0.inet.ntl.com (62.253.184.2)  49.538 ms  10.872 ms 
> 20.802 ms
>   7  212.250.14.66 (212.250.14.66)  20.769 ms  15.913 ms  15.863 ms
>   8  72.14.238.244 (72.14.238.244)  24.804 ms  24.771 ms  24.732 ms
>   9  209.85.248.80 (209.85.248.80)  36.687 ms 72.14.233.63 (72.14.233.63) 
> 44.621 ms  45.582 ms
> 10  64.233.175.246 (64.233.175.246)  83.508 ms 209.85.248.79 
> (209.85.248.79)  68.446 ms 64.233.175.246 (64.233.175.246)  38.888 ms
> 11  * 72.14.233.79 (72.14.233.79)  57.788 ms 72.14.233.77 (72.14.233.77) 
> 57.757 ms
> 12  209.85.249.129 (209.85.249.129)  67.676 ms * 216.239.43.30 
> (216.239.43.30)  30.944 ms
> 13  nf-in-f99.google.com (64.233.183.99)  30.866 ms  37.809 ms  38.767 ms
> 
> [where I've elided some IP addresses and hostnames]
> 
> Does firefox work when you use the IP address above?
> Does safari work?
> 
> hth,
>   Peter
> 
> 
> This message has been checked for viruses but the contents of an attachment
> may still contain software viruses, which could damage your computer system:
> you are advised to perform your own checks. Email communications with the
> University of Nottingham may be monitored as permitted by UK legislation.
> 
> 
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