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IPv4 Prefix-Probing Traceroute Dataset
The IPv4 Prefix-Probing dataset consists of daily traceroutes to every announced BGP prefix (around 609k as of Jan 2016) from a subset of Ark monitors. Each monitor probes the entire set of targets independently, and each monitor completes exactly one pass of the target set every calendar day (aligned on UTC boundaries).

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These datasets result from CAIDA's traceroute-based measurements running on the Archipelago (Ark) measurement infrastructure (also see CAIDA's Macroscopic Topology Project). We use BGPStream to gather announced BGP prefixes from RIPE and RouteViews BGP data. Each day, we derive a new set of announced prefixes using a sliding window of 7 days of BGP data (7 days of data ending on the day on which a daily BGP prefix set is generated). For each announced prefix, we generate a single target address, ensuring there is never more than one target address in any prefix despite the presence of overlapping prefixes (that is, more specific prefixes).

Data availability

  • Data older than one year is available as a public dataset. Access to these data is subject to the terms of the following CAIDA Acceptable Use Agreement (printable version in PDF format).

    When referencing this data (as required by the AUA), please use:
    The CAIDA IPv4 Prefix-Probing Traceroute Dataset - <dates used>,
  • Access to the most recent one year of data is provided through the website of the Information Marketplace for Policy and Analysis of Cyber-risk and Trust (IMPACT) and subject to the following:
    When referencing this data (as required by the MOA), please use:
    The CAIDA IPv4 Prefix-Probing Traceroute Dataset - < dates used >,, DOI 10.23721/107/1354205

Please, report your publications using this dataset to CAIDA.

Request Data Access

  • Access the publicly available CAIDA IPv4 Prefix-Probing Tracerout Dataset (and other topology data)
  • Request Access to the restricted CAIDA IPv4 Prefix-Probing Tracerout Dataset via IMPACT

Topology Datasets


For more information on CAIDA topology measurements, see:

For more information on topology measurements in general see:

  Last Modified: Thu Nov-14-2019 12:12:15 PST
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