xnnd.com tools for dns
DNS Lookup: Multi DNS?

Checking A record for u3.amazonaws.com using Unbound DNS server ( (or click here to check using the Google DNS website.)
u3.amazonaws.com has address

Did you receive spam from u3.amazonaws.com? Try looking up where to send a spam report using abuse.net.
Or check its IP address in ARIN and look for an abuse contact.

Multi DNS Options: No/off=Check one random public server. Yes=Check public DNS servers. Special=Check DNS servers authoritative for zone/domain.

The authoritative DNS servers for this host are: r1.amazonaws.com, r2.amazonaws.com, u1.amazonaws.com, u2.amazonaws.com.

Run at: Fri Sep 17 05:40:08 UTC 2021

 xnnd simple tools for dns since 2008