Re: [public-dns-discuss] Cannot ping Google DNS servers

[MinJae Hwang]

Hello Nathan,

Before investigating any further, could you confirm that you can get a DNS response from Google Public DNS?

Could you do the following in your machine and report back here?

On Windows:

nslookup -debug www.google.com. 8.8.8.8

On Mac and Linux:

dig @8.8.8.8 www.google.com.

The trouble shooting page might be helpful to you.

https://developers.google.com/speed/public-dns/docs/using#troubleshooting 

Thanks.

On Mon, Jul 16, 2012 at 6:19 AM, Nathan <nar...@gmail.com> wrote:

Hi

I am unable to ping any Google DNS servers 8.8.8.8 and 8.8.4.4, also loading webpages is very slow.

I have included a traceroute sample:

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

C:\Windows\System32>tracert -d 8.8.8.8

Tracing route to 8.8.8.8 over a maximum of 30 hops

  1    <1 ms    <1 ms    <1 ms  85.92.212.193
  2    <1 ms    <1 ms    <1 ms  85.92.212.45
  3    <1 ms    <1 ms    <1 ms  217.169.35.105
  4    <1 ms    <1 ms    <1 ms  217.169.35.101
  5   293 ms     3 ms     1 ms  195.50.121.21
  6    <1 ms    <1 ms    <1 ms  4.69.200.97
  7    <1 ms    <1 ms    <1 ms  4.69.141.189
  8    <1 ms    <1 ms    <1 ms  4.69.153.114
  9     1 ms    <1 ms    <1 ms  4.69.139.66
 10    <1 ms    <1 ms    <1 ms  195.50.118.210
 11     4 ms    <1 ms     1 ms  209.85.255.76
 12     1 ms     1 ms     1 ms  209.85.253.92
 13    33 ms     7 ms     7 ms  209.85.243.33
 14    10 ms    10 ms    18 ms  216.239.49.36
 15     *       24 ms    17 ms  209.85.255.118
 16     *        *        *     Request timed out.
 17     *        *        *     Request timed out.
 18     *        *        *     Request timed out.
 19     *        *        *     Request timed out.
 20     *        *        *     Request timed out.
 21     *        *        *     Request timed out.
 22     *        *        *     Request timed out.
 23     *        *        *     Request timed out.
 24     *        *        *     Request timed out.
 25     *        *        *     Request timed out.
 26     *        *        *     Request timed out.
 27     *        *        *     Request timed out.
 28     *        *        *     Request timed out.
 29     *        *        *     Request timed out.
 30     *        *        *     Request timed out.

Trace complete.

C:\Windows\System32>

--
========================================================
You received this message because you are subscribed to the Google
Groups "public-dns-discuss" group.
To post to this group, send email to public-dn...@googlegroups.com
To unsubscribe from this group, send email to
public-dns-disc...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/public-dns-discuss?hl=en
For more information on Google Public DNS, please visit
http://code.google.com/speed/public-dns
========================================================

[MinJae Hwang]

Hello Nathan,

Could you report here or send me a private e-mail including these information? I do understand that exposing your external IP can be sensitive. If that's the case, send it to my e-mail address.

- Your external IP.

- The result of a ping to 8.8.8.8 and 8.8.4.4

- traceroute for a few more tries to 8.8.8.8 and 8.8.4.4

Thanks.

[Yunhong Gu]

It doesn't seem to be a DNS problem. Your ping/tracert to google.com
failed because the OS chose an IPv6 address, and the failure of "ping
bing.com" because the latter does not respond ping. The RTT to 8.8.8.8
(49ms) is good.

On Wed, Nov 28, 2012 at 11:24 PM, <alai...@gmail.com> wrote:
> Hello, I have a problem similar to that. This is what I have with this
> command
>
> C:\Users\alain>nslookup -debug www.google.com 8.8.8.8
> ------------
> Got answer:
> HEADER:
> opcode = QUERY, id = 1, rcode = NOERROR
> header flags: response, want recursion, recursion avail.
> questions = 1, answers = 1, authority records = 0, additional = 0
>
> QUESTIONS:
> 8.8.8.8.in-addr.arpa, type = PTR, class = IN
> ANSWERS:
> -> 8.8.8.8.in-addr.arpa
> name = google-public-dns-a.google.com
> ttl = 36547 (10 hours 9 mins 7 secs)
>
> ------------
> Server: google-public-dns-a.google.com
> Address: 8.8.8.8
>
> ------------
> Got answer:
> HEADER:
> opcode = QUERY, id = 2, rcode = NOERROR
> header flags: response, want recursion, recursion avail.
> questions = 1, answers = 6, authority records = 0, additional = 0
>
> QUESTIONS:
> www.google.com, type = A, class = IN
> ANSWERS:
> -> www.google.com
> internet address = 74.125.130.99
> ttl = 221 (3 mins 41 secs)
> -> www.google.com
> internet address = 74.125.130.104
> ttl = 221 (3 mins 41 secs)
> -> www.google.com
> internet address = 74.125.130.147
> ttl = 221 (3 mins 41 secs)
> -> www.google.com
> internet address = 74.125.130.105
> ttl = 221 (3 mins 41 secs)
> -> www.google.com
> internet address = 74.125.130.103
> ttl = 221 (3 mins 41 secs)
> -> www.google.com
> internet address = 74.125.130.106
> ttl = 221 (3 mins 41 secs)
>
> ------------
> Non-authoritative answer:
> ------------
> Got answer:
> HEADER:
> opcode = QUERY, id = 3, rcode = NOERROR
> header flags: response, want recursion, recursion avail.
> questions = 1, answers = 1, authority records = 0, additional = 0
>
> QUESTIONS:
> www.google.com, type = AAAA, class = IN
> ANSWERS:
> -> www.google.com
> AAAA IPv6 address = 2607:f8b0:4002:c05::69
> ttl = 176 (2 mins 56 secs)
>
> ------------
> Name: www.google.com
> Addresses: 2607:f8b0:4002:c05::69
> 74.125.130.99
> 74.125.130.104
> 74.125.130.147
> 74.125.130.105
> 74.125.130.103
> 74.125.130.106
>
> Now, if I ping google.com this is what I have
>
> C:\Users\alain>ping google.com
>
> Pinging google.com [2607:f8b0:4002:c01::8a] with 32 bytes of data:
> Request timed out.
> Request timed out.
> Request timed out.
> Request timed out.
>
> Ping statistics for 2607:f8b0:4002:c01::8a:
> Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
>
> Next to google.com there is no ip address like in bing example
>
> C:\Users\alain>ping bing.com
>
> Pinging bing.com [131.253.13.32] with 32 bytes of data:
> Request timed out.
> Request timed out.
> Request timed out.
> Request timed out.
>
> Ping statistics for 131.253.13.32:
> Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
>
> Now, I will ping 8.8.8.8 and 8.8.4.4
>
> C:\Users\alain>ping 8.8.8.8
>
> Pinging 8.8.8.8 with 32 bytes of data:
> Reply from 8.8.8.8: bytes=32 time=40ms TTL=45
> Reply from 8.8.8.8: bytes=32 time=58ms TTL=45
> Reply from 8.8.8.8: bytes=32 time=81ms TTL=45
> Reply from 8.8.8.8: bytes=32 time=173ms TTL=45
>
> Ping statistics for 8.8.8.8:
> Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
> Approximate round trip times in milli-seconds:
> Minimum = 40ms, Maximum = 173ms, Average = 88ms
>
> C:\Users\alain>ping 8.8.4.4
>
> Pinging 8.8.4.4 with 32 bytes of data:
> Reply from 8.8.4.4: bytes=32 time=35ms TTL=46
> Reply from 8.8.4.4: bytes=32 time=30ms TTL=46
> Reply from 8.8.4.4: bytes=32 time=32ms TTL=46
> Reply from 8.8.4.4: bytes=32 time=30ms TTL=46
>
> Ping statistics for 8.8.4.4:
> Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
> Approximate round trip times in milli-seconds:
> Minimum = 30ms, Maximum = 35ms, Average = 31ms
>
> traceroute 8.8.8.8
>
> C:\Users\alain>tracert 8.8.8.8
>
> Tracing route to google-public-dns-a.google.com [8.8.8.8]

>
> over a maximum of 30 hops:
>

> 1 5 ms 4 ms 4 ms CISCO7186 [192.168.1.1]
> 2 13 ms 14 ms 16 ms 96.120.37.117
> 3 16 ms 13 ms 13 ms
> xe-0-2-0-0-sur01.sweetwater.fl.pompano.comcast.n
> et [68.85.125.17]
> 4 19 ms 18 ms 27 ms
> te-0-10-0-11-ar03.northdade.fl.pompano.comcast.n
> et [68.87.162.153]
> 5 17 ms 22 ms 23 ms he-0-8-0-0-cr01.miami.fl.ibone.comcast.net
> [68.8
> 6.93.85]
> 6 35 ms 34 ms 34 ms
> pos-0-12-0-0-cr01.56marietta.ga.ibone.comcast.ne
> t [68.86.85.5]
> 7 36 ms 34 ms 35 ms
> pos-0-11-0-0-pe01.56marietta.ga.ibone.comcast.ne
> t [68.86.88.186]
> 8 37 ms 39 ms 61 ms 75.149.231.86
> 9 31 ms 31 ms 30 ms 72.14.239.100
> 10 31 ms 36 ms 119 ms 66.249.94.20
> 11 42 ms 41 ms 41 ms 216.239.48.41
> 12 41 ms 45 ms 41 ms 216.239.49.253
> 13 * * * Request timed out.
> 14 41 ms 41 ms 49 ms google-public-dns-a.google.com [8.8.8.8]
>
> Trace complete.
>
> tracert google.com
>
> C:\Users\alain>tracert google.com
>
> Tracing route to google.com [2607:f8b0:4002:c02::65]

>
> over a maximum of 30 hops:
>

> 1 11 ms 2 ms 1 ms fd15:d807:5e1a:0:5a6d:8fff:fe23:e70e
>
> 2 * * * Request timed out.
> 3 * * * Request timed out.
> 4 * * * Request timed out.
> 5 * * * Request timed out.
> 6 * * * Request timed out.
> 7 * * * Request timed out.
> 8 * * * Request timed out.
> 9 * * * Request timed out.
> 10 * * * Request timed out.
> 11 * * * Request timed out.
> 12 * * * Request timed out.
> 13 * * * Request timed out.
> 14 * * * Request timed out.
> 15 * * * Request timed out.

>
> 16 * * * Request timed out.
> 17 * * * Request timed out.
> 18 * * * Request timed out.

> 19 ^C
> C:\Users\alain>
>
>
> But I do can access the internet like now, but sometimes it take seconds to
> open google.com
>
> I dont know what it is, can you help? I use comcast, I live in Miami
>
> Thank you,
> Alain

[Alain Delfin]

True, fixed, I had IPv6 activated in my wireless router for some reason, thank you so much :)

--
Regards,
Alain

[spa...@globalsurveysolutions.com]

Hi,

My outllok is not downloading emails which is setup on google mail server. Run some commands as suggested in this thread but no luck. I am not able to ping google.com as getting RTO but when ping using IP address its getting reply, not sure what causing the issue can you help please

Here is NSLOOKUP result

C:\Windows\system32>nslookup -debug www.google.com 8.8.8.8

------------
Got answer:
    HEADER:
        opcode = QUERY, id = 1, rcode = NOERROR
        header flags:  response, want recursion, recursion avail.
        questions = 1,  answers = 1,  authority records = 0,  additional = 0

    QUESTIONS:
        8.8.8.8.in-addr.arpa, type = PTR, class = IN
    ANSWERS:
    ->  8.8.8.8.in-addr.arpa
        name = google-public-dns-a.google.com

        ttl = 20355 (5 hours 39 mins 15 secs)

------------
Server:  google-public-dns-a.google.com
Address:  8.8.8.8

------------
Got answer:
    HEADER:
        opcode = QUERY, id = 2, rcode = NOERROR
        header flags:  response, want recursion, recursion avail.

        questions = 1,  answers = 5,  authority records = 0,  additional = 0

    QUESTIONS:
        www.google.com, type = A, class = IN
    ANSWERS:
    ->  www.google.com

        internet address = 173.194.36.116
        ttl = 227 (3 mins 47 secs)
    ->  www.google.com
        internet address = 173.194.36.115
        ttl = 227 (3 mins 47 secs)
    ->  www.google.com
        internet address = 173.194.36.114
        ttl = 227 (3 mins 47 secs)
    ->  www.google.com
        internet address = 173.194.36.112
        ttl = 227 (3 mins 47 secs)
    ->  www.google.com
        internet address = 173.194.36.113
        ttl = 227 (3 mins 47 secs)

------------
Non-authoritative answer:
------------
Got answer:
    HEADER:
        opcode = QUERY, id = 3, rcode = NOERROR
        header flags:  response, want recursion, recursion avail.
        questions = 1,  answers = 1,  authority records = 0,  additional = 0

    QUESTIONS:
        www.google.com, type = AAAA, class = IN
    ANSWERS:
    ->  www.google.com

        AAAA IPv6 address = 2404:6800:4002:803::1013
        ttl = 299 (4 mins 59 secs)

------------
Name:    www.google.com
Addresses:  2404:6800:4002:803::1013
          173.194.36.116
          173.194.36.115
          173.194.36.114
          173.194.36.112
          173.194.36.113

Below is TRACERT result upto 4 times, it was rto when I last tried at 3rd but now its giving as below.
C:\Windows\system32>tracert -d 8.8.8.8

Tracing route to 8.8.8.8 over a maximum of 30 hops

  1    <1 ms    <1 ms    <1 ms  192.168.17.4
  2    10 ms     5 ms    10 ms  122.160.220.72
  3  1508 ms  1900 ms  2004 ms  122.160.220.149
  4     4 ms     3 ms     3 ms  59.144.68.5
  5    10 ms     8 ms     7 ms  59.145.7.229
  6     7 ms    12 ms     7 ms  72.14.223.230
  7    13 ms    15 ms     7 ms  72.14.237.3
  8     7 ms    16 ms     7 ms  8.8.8.8

Trace complete.

C:\Windows\system32>tracert -d 8.8.8.8

Tracing route to 8.8.8.8 over a maximum of 30 hops

  1    <1 ms    <1 ms    <1 ms  192.168.17.4
  2    14 ms     3 ms     3 ms  122.160.220.72
  3  1151 ms  1800 ms  1112 ms  122.160.220.149
  4     6 ms     3 ms     3 ms  59.144.68.5
  5     8 ms     8 ms     6 ms  59.145.7.229
  6     6 ms     6 ms     7 ms  72.14.223.230
  7     7 ms     7 ms     7 ms  72.14.237.3
  8     6 ms     5 ms     7 ms  8.8.8.8

Trace complete.

C:\Windows\system32>tracert -d 8.8.8.8

Tracing route to 8.8.8.8 over a maximum of 30 hops

  1     1 ms    <1 ms    <1 ms  192.168.17.4
  2    13 ms     7 ms     7 ms  122.160.220.72
  3  1127 ms   801 ms   799 ms  122.160.220.149
  4     5 ms     3 ms     3 ms  59.144.68.5
  5    10 ms     5 ms     9 ms  59.145.7.229
  6     8 ms     4 ms     7 ms  72.14.223.230
  7    10 ms     6 ms     6 ms  72.14.237.3
  8    13 ms     7 ms     8 ms  8.8.8.8

Trace complete.

C:\Windows\system32>

thanks
Shailesh

On Monday, July 16, 2012 3:49:40 PM UTC+5:30, Nathan wrote:

Hi

I am unable to ping any Google DNS servers 8.8.8.8 and 8.8.4.4, also loading webpages is very slow.

I have included a traceroute sample:

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

C:\Windows\System32>tracert -d 8.8.8.8

Tracing route to 8.8.8.8 over a maximum of 30 hops

  1    <1 ms    <1 ms    <1 ms  85.92.212.193
  2    <1 ms    <1 ms    <1 ms  85.92.212.45
  3    <1 ms    <1 ms    <1 ms  217.169.35.105
  4    <1 ms    <1 ms    <1 ms  217.169.35.101
  5   293 ms     3 ms     1 ms  195.50.121.21
  6    <1 ms    <1 ms    <1 ms  4.69.200.97
  7    <1 ms    <1 ms    <1 ms  4.69.141.189
  8    <1 ms    <1 ms    <1 ms  4.69.153.114
  9     1 ms    <1 ms    <1 ms  4.69.139.66
 10    <1 ms    <1 ms    <1 ms  195.50.118.210
 11     4 ms    <1 ms     1 ms  209.85.255.76
 12     1 ms     1 ms     1 ms  209.85.253.92
 13    33 ms     7 ms     7 ms  209.85.243.33
 14    10 ms    10 ms    18 ms  216.239.49.36
 15     *       24 ms    17 ms  209.85.255.118

 16     *        *        *     Request timed out.
 17     *        *        *     Request timed out.
 18     *        *        *     Request timed out.