How to not pass these upstream?

[B. Cook]

is there a way to address these locally?

Without passing them to an upstream recursor?

10.20.8.29 is unbound and these are logs from dns-over-http client (aur ports)

10.20.8.29:15020 - - [21/Oct/2019:11:49:13 -0400] "hbkuojyles. IN A"
10.20.8.29:13033 - - [21/Oct/2019:11:49:13 -0400] "fgtfkkdxgwfa. IN A"
10.20.8.29:56696 - - [21/Oct/2019:11:49:13 -0400] "hbkuojyles. IN A"
10.20.8.29:62727 - - [21/Oct/2019:11:49:13 -0400] "xkmnguqpjx. IN A"
10.20.8.29:16633 - - [21/Oct/2019:11:49:13 -0400] "xkmnguqpjx. IN A"
10.20.8.29:24331 - - [21/Oct/2019:11:49:13 -0400] "xkmnguqpjx. IN A"
10.20.8.29:35893 - - [21/Oct/2019:11:49:13 -0400] "gmjisoen. IN A"
10.20.8.29:31220 - - [21/Oct/2019:11:49:13 -0400] "rxdqenbginmvnm. IN A"
10.20.8.29:10867 - - [21/Oct/2019:11:49:14 -0400] "esfvwynlyoxgox. IN A"

Is there someway to limit these?

the randomly come in bursts from clients doing various checking..

10.20.8.29:59511 - - [21/Oct/2019:11:54:40 -0400] "uppkncjqrg. IN A"
10.20.8.29:29935 - - [21/Oct/2019:11:54:40 -0400] "sfedxwtllfx. IN A"
10.20.8.29:37957 - - [21/Oct/2019:11:54:40 -0400] "ewskqfu. IN A"
10.20.8.29:6215 - - [21/Oct/2019:11:54:40 -0400] "cfrwvnynxfquzr. IN A"
10.20.8.29:53225 - - [21/Oct/2019:11:54:40 -0400] "ovtxiaeztpaoxj. IN A"
10.20.8.29:9016 - - [21/Oct/2019:11:54:40 -0400] "kmavvjppntn. IN A"
10.20.8.29:11245 - - [21/Oct/2019:11:54:40 -0400] "fkshwbgafpp. IN A"
10.20.8.29:60053 - - [21/Oct/2019:11:54:40 -0400] "iqkjgvysb. IN A"

Thanks in advance.

-- 

This message may contain confidential information and is intended only for 
the individual(s) named. If you are not an intended recipient you are not 
authorized to disseminate, distribute or copy this e-mail. Please notify 
the sender immediately if you have received this e-mail by mistake and 
delete this e-mail from your system.