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Throughout 21 we saw around 15M DNS queries/month. In January 2022 we saw almost 300M and I didn't notice.... then February almost 1 BILLION...... and I noticed because of the bill. Amazon isn't really helping yet I told them this is obviously spam.

This isn't application layer there is nothing I can do right...?

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  • Route53 doesn't charge for some record types - things like A and AAAA or Alias records pointing at AWS resources. Maybe review what records you have and see if you can adjust them?
    – shearn89
    Mar 8, 2022 at 12:59
  • aws.amazon.com/en/route53/pricing @shearn89 i think thats not entirely true
    – djdomi
    Mar 8, 2022 at 18:42
  • One billion or one trillion? AWS pricing calculator refuses to exceed 10 billion.
    – John Mahowald
    Mar 9, 2022 at 5:03
  • @djdomi - that's the page I checked: "DNS queries are free when both of the following are true: The domain or subdomain name (example.com or acme.example.com) and the record type (A) in the query match an alias record. The alias target is an AWS resource other than another Route 53 record."
    – shearn89
    Mar 9, 2022 at 8:23
  • @djdomi - my mistake indeed ~1 billion or 980,441,652 queries in February. Still definitely an attack... not legit traffic.
    – dgobaud
    Mar 9, 2022 at 15:01

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