dns clients using non-ephemeral ports

[ed at alcpress.com]

My firewall is configured to allow dns requests from the outside
world that use ephemeral source ports (1024-65535) and port 53.
When I check my logs, I see packets that were rejected
because they used source ports below 1024. Here
are some examples:

195.153.131.2:665
203.229.169.225:744
212.62.4.189:904

Are there resolvers or servers out there that normally do this or
have I turned away a potential attack?

Ed