[177320] in North American Network Operators' Group
Re: 129.250.35.250/251 NTT DNS Instability
daemon@ATHENA.MIT.EDU (Ammar Zuberi)
Mon Jan 12 11:32:05 2015
X-Original-To: nanog@nanog.org
From: Ammar Zuberi <ammar@fastreturn.net>
In-Reply-To: <004901d02e84$d2bd3380$78379a80$@ca>
Date: Mon, 12 Jan 2015 20:30:39 +0400
To: A MEKKAOUI <amekkaoui@mektel.ca>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
Traceroute from my home connection in Dubai, United Arab Emirates:
traceroute to 129.250.35.250 (129.250.35.250), 64 hops max, 52 byte =
packets
1 192.168.1.1 (192.168.1.1) 2.293 ms 1.549 ms 7.657 ms
2 94.203.22.1 (94.203.22.1) 3.281 ms 8.348 ms 8.494 ms
3 10.39.162.65 (10.39.162.65) 5.722 ms 2.753 ms 4.999 ms
4 10.171.0.19 (10.171.0.19) 2.780 ms 3.022 ms 3.278 ms
5 10.100.35.78 (10.100.35.78) 6.344 ms 5.340 ms 5.254 ms
6 10.44.24.162 (10.44.24.162) 90.120 ms 90.141 ms 92.448 ms
7 116.51.26.81 (116.51.26.81) 276.227 ms 265.609 ms 368.385 ms
8 ae-1.r21.sngpsi05.sg.bb.gin.ntt.net (129.250.7.20) 275.509 ms =
270.857 ms 274.100 ms
9 ae-4.r23.tokyjp01.jp.bb.gin.ntt.net (129.250.7.37) 258.667 ms =
265.824 ms 256.990 ms
10 x.ns.gin.ntt.net (129.250.35.250) 251.302 ms 252.865 ms 255.337 =
ms
> On Jan 12, 2015, at 8:28 PM, A MEKKAOUI <amekkaoui@mektel.ca> wrote:
>=20
> What we've seen is that this morning some of our clients cannot =
connect to
> internet and when we change the DNS to use Google DNS internet works =
fine.
> I'll see if I can get a tracert to 129.250.35.250 and will send it.
>=20
> Thank you
>=20
> A MEKKAOUI
> MEKTEL INC
> www.mektel.ca
>=20
>=20
> -----Original Message-----
> From: Jared Mauch [mailto:jared@puck.nether.net]=20
> Sent: 12 janvier 2015 11:20
> To: A MEKKAOUI
> Cc: nanog@nanog.org
> Subject: Re: 129.250.35.250/251 NTT DNS Instability
>=20
> Can you give examples? 129.250.35.250/251 are anycasted so a trace =
route
> would be helpful as well.
>=20
> - jared
>=20
>> On Jan 12, 2015, at 11:17 AM, A MEKKAOUI <amekkaoui@mektel.ca> wrote:
>>=20
>> Hi
>>=20
>>=20
>>=20
>> We've seen some DNS instability and want to know if anyone of you =
have=20
>> seen the same thing. Your comments will be appreciated.
>>=20
>>=20
>>=20
>> Thank you
>>=20
>>=20
>>=20
>> Karim
>>=20
>>=20
>=20
>=20
