Dataset from: LARS: Keeping Local Traffic Local with Latency-Aware Route Servers at IXPs

This dataset corresponds to the 84 Internet-wide scans performed for the SIGCOMM 2026 paper: LARS: Keeping Local Traffic Local with Latency-Aware Route Servers at IXPs. The scans were performed from November 2025 to January 2026, over a period of 54 days. Each scan file includes the following columns: host_24: the /24 network IP address of the probed host next_hop_id: the next hop IP address, pseudoanonymized consistently across scans. best_estimator_rtt_us: the minimum RTT, in microseconds, across all responsive hosts in the host_24 network. run_datetime: date of the scan This work was funded by the German Federal Ministry of Research, Technology and Space (BMFTR) grant XLerate (grant number 16KIS2055K and 16KIS2056).D. De Andres Hernandez's work is supported by ORIGAMI project (101139270) funded by SNS JU and the European Union.