<div dir="ltr">Well, they were half right:<div><br><a href="http://172.253.5.0/25">172.253.5.0/25</a> hkg<br><a href="http://172.253.5.128/25">172.253.5.128/25</a> mad<br><div><br></div><div>Locations are published at <a href="https://developers.google.com/speed/public-dns/faq#locations">https://developers.google.com/speed/public-dns/faq#locations</a></div></div><div><br></div><div>Damian</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jan 26, 2022 at 3:19 AM Borja Marcos <<a href="mailto:borjam@sarenet.es">borjam@sarenet.es</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>
Not Google’s fault at all, but a customer was suffering SERVFAILS when Google’s servers queried their authoritatives.<br>
<br>
Turns out the customer filters queries to the authoritative servers using a firewall (sigh!) and they have applied country<br>
specific restrictions (ubersigh!). It seems that the query source addresses changed yesterday and the new range (<a href="http://172.253.5.0/24" rel="noreferrer" target="_blank">172.253.5.0/24</a>)<br>
appears as “Hong Kong” in at least some of the usual IP address to country databases.<br>
<br>
The ones I saw are:<br>
<br>
2022-01-25 10:54:50.880 5334.784 any 172.253.5.129 39(10.3) 39000(10.3) 2.9 M( 9.8) 7 4356 74<br>
2022-01-25 10:56:42.496 4996.608 any 172.253.5.130 33( 8.8) 33000( 8.8) 2.4 M( 8.1) 6 3821 72<br>
2022-01-25 11:06:02.624 4692.736 any 172.253.5.132 28( 7.4) 28000( 7.4) 2.1 M( 7.2) 5 3644 76<br>
2022-01-25 10:55:15.200 5168.384 any 172.253.5.196 28( 7.4) 28000( 7.4) 2.0 M( 6.9) 5 3151 72<br>
2022-01-25 10:55:18.784 5272.320 any 172.253.5.131 26( 6.9) 26000( 6.9) 2.0 M( 6.8) 4 3039 77<br>
2022-01-25 10:56:46.592 5249.792 any 172.253.5.194 26( 6.9) 26000( 6.9) 2.0 M( 6.8) 4 3067 77<br>
2022-01-25 10:55:54.880 5082.368 any 172.253.5.195 26( 6.9) 26000( 6.9) 1.8 M( 6.2) 5 2889 70<br>
2022-01-25 10:54:39.360 5038.336 any 172.253.5.193 25( 6.6) 25000( 6.6) 1.9 M( 6.3) 4 2977 75<br>
2022-01-25 10:56:25.856 5034.240 any 172.253.5.197 21( 5.6) 21000( 5.6) 1.6 M( 5.2) 4 2466 73<br>
2022-01-25 10:59:57.056 4976.384 any 172.253.5.133 20( 5.3) 20000( 5.3) 1.6 M( 5.4) 4 2576 80<br>
<br>
<br>
Just thought you would love to know!<br>
<br>
Cheers,<br>
<br>
<br>
<br>
<br>
Borja.<br>
<br>
<br>
<br>
<br>
<br>
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</blockquote></div>