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    An online service for analysing streams of BGP updates.

    BGPath is an on-line service that helps understanding BGP updates.

    Namely, given an AS-path change, BGPath ...

    ... places the ASes involved in the change according to the customer-provider hierarchy of the ISPs.
    ... visualizes both aggregated and disaggregated information for each interdomain link appearing in the change.
    ... traces different paths to the prefix involved in change over time.
    ... allows users to compare the observed routing updates against policy information from the Internet Routing Registry.
    You can find a complete description of BGPath here.