<div dir="ltr">We're seeing issues reaching CentralNic managed nameservers *.nic.(online, tech, xyl, space, etc.) in Europe as well. It looks like their prefixes are being hijacked by China Mobile and being advertised by FLAG telecom. We had to filter out those routes in order to reach them again.<br><br>Anyone on this list from CentralNic that could look into things?<br><br>-Dan<br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><table width="100%" style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:15px;line-height:22px"><tbody><tr><td width="55px" valign="top" style="padding-right:12px"><br><img src="https://digitaloceanspace.nyc3.digitaloceanspaces.com/do-sig_files/do-email_signature.png" style="width:50px"></td><td><div style="color:rgb(34,34,34);font-weight:bold;margin-top:4px"><br>Dan McCombs</div><div style="color:rgb(34,34,34);margin-bottom:12px">Senior Engineer I - DNS</div><div><a href="mailto:dmccombs@digitalocean.com" style="color:rgba(51,51,51,0.75);font-size:14px" target="_blank">dmccombs@digitalocean.com</a></div></td></tr></tbody></table></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Jan 29, 2024 at 2:53 PM A. Schulze via dns-operations <<a href="mailto:dns-operations@dns-oarc.net">dns-operations@dns-oarc.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br><br><br>---------- Forwarded message ----------<br>From: "A. Schulze" <<a href="mailto:sca@andreasschulze.de" target="_blank">sca@andreasschulze.de</a>><br>To: "<a href="mailto:dns-operations@lists.dns-oarc.net" target="_blank">dns-operations@lists.dns-oarc.net</a>" <<a href="mailto:dns-operations@lists.dns-oarc.net" target="_blank">dns-operations@lists.dns-oarc.net</a>><br>Cc: <br>Bcc: <br>Date: Mon, 29 Jan 2024 20:50:00 +0100<br>Subject: hosting. nameservers partial unreachable<br>Hello,<br>
<br>
to day I noticed unreachable nameserver [a-d].nic.hosting. via IPv4<br>
approved by at least two locations by such script:<br>
<br>
for transport in tcp notcp; do<br>
for protocol in 4 6; do<br>
for host in a b c d; do<br>
printf "${host}.nic.hosting/${protocol}/${transport}:"<br>
if dig -${protocol} @${host}.nic.hosting. hosting. soa +timeout=1 +retry=1 +short +${transport} 2>/dev/null | grep --silent <a href="http://hostmaster.centralnic.net" rel="noreferrer" target="_blank">hostmaster.centralnic.net</a>; then<br>
printf "ok\n";<br>
else<br>
printf "fail\n";<br>
fi<br>
done<br>
done<br>
done<br>
<br>
from AS31334 and AS15451:<br>
<br>
a.nic.hosting/4/tcp:fail<br>
b.nic.hosting/4/tcp:fail<br>
c.nic.hosting/4/tcp:fail<br>
d.nic.hosting/4/tcp:fail<br>
a.nic.hosting/6/tcp:ok<br>
b.nic.hosting/6/tcp:ok<br>
c.nic.hosting/6/tcp:ok<br>
d.nic.hosting/6/tcp:ok<br>
a.nic.hosting/4/notcp:fail<br>
b.nic.hosting/4/notcp:fail<br>
c.nic.hosting/4/notcp:fail<br>
d.nic.hosting/4/notcp:fail<br>
a.nic.hosting/6/notcp:ok<br>
b.nic.hosting/6/notcp:ok<br>
c.nic.hosting/6/notcp:ok<br>
d.nic.hosting/6/notcp:ok<br>
<br>
from other locations I got 16x ok<br>
Sometimes I also saw some OK for IPv4, too bit resolver so not retry as often.<br>
<br>
Any hints?<br>
Andreas<br>
<br><br><br>---------- Forwarded message ----------<br>From: "A. Schulze via dns-operations" <<a href="mailto:dns-operations@dns-oarc.net" target="_blank">dns-operations@dns-oarc.net</a>><br>To: "<a href="mailto:dns-operations@lists.dns-oarc.net" target="_blank">dns-operations@lists.dns-oarc.net</a>" <<a href="mailto:dns-operations@lists.dns-oarc.net" target="_blank">dns-operations@lists.dns-oarc.net</a>><br>Cc: <br>Bcc: <br>Date: Mon, 29 Jan 2024 20:50:00 +0100<br>Subject: [dns-operations] hosting. nameservers partial unreachable<br>_______________________________________________<br>
dns-operations mailing list<br>
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</blockquote></div>