[atlas] Assigned AS vs. Advertising AS

Hi Everyone,

worldwide, there are a lot of IP prefixes which are not advertised by the owner AS. Instead, another AS announces the prefix on behalf of the owner. For example: Amazon allows you to announce your prefix via AWS. For other people, this can lead to misassumptions (assuming a wrong IP owner).

https://aws.amazon.com/about-aws/whats-new/2018/10/announcing-the-general-availability-of-bring-your-own-ip-for-amazon-virtual-private-cloud/

Another example would be a multi ASN company which announces all prefixes from a single ASN via BGP, even though the prefixes are assigned to various AS numbers. Since the RIRs do have the information, to which AS a specific prefix is assigned to, i would like to ask for more transparency. I would appreciate, if we could see more details here, and even more important: filter for such criterias when creating a new measurement.

Anyone else here, who thinks that's useful?



BR,
Simon
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