DNS timeouts

[Fajardo, Jonathan]

To whom this may concern:

I work on the network operations team for Teach For America.  We've recently come across an issue where our data center is getting timed out with reverse lookups.  I reached out to iana.org and they suggested I forward my issue to AS112 Operators.

We have two zones that we lookup against:

blackhole-2.iana.org internet address = 192.175.48.42
blackhole-1.iana.org internet address = 192.175.48.6


We expect to get response right away:   *** blackhole-2.iana.org can't find 172.17.5.99: Non-existent domain
Instead we get:  DNS request timed out.

The timeout is causing a delay in our ability to quickly SSH into our Linux boxes as they perform a reverse lookup on clients trying to connect.  We are mostly remote workers and have done a workaround by creating an internal DNS zone for our VPN network.  I have tried doing a lookup directly connected to internet at our data center and get the same issue (bypassing our firewalls and other network equipment).  When we try the lookup from one of our other offices, it works no problem.  Has our public IP for our data center been blocked in any way?  We advertise a 198.202.213.0/25 on our BGP

Regards,
Jon
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