Low Earth Orbit (LEO) satellite networks have attracted considerable attention for their ability to deliver global, low-latency broadband Internet services. In this paper, we present a large-scale measurement study of the Starlink network, the largest LEO satellite constellation to date. We begin by proposing an efficient method for discovering active Starlink user routers, identifying approximately 3.2 million IPv6 addresses across 102 countries and 123 regions-representing, to the best of our knowledge, the most complete list of Starlink user routers' active IPv6 addresses. Based on the discovered user routers, we map the Starlink backbone network, which consists of 33 Points of Presence (PoPs) and 70 connections between them. Furthermore, we conduct a detailed statistical analysis of active Starlink users and PoPs. Finally, we summarize the IPv6 address assignment strategy adopted by the Starlink network. The dataset of the backbone network is publicly available at https://ki3.org.cn/#/starlink-network.

翻译：低地球轨道（LEO）卫星网络因其能够提供全球性、低延迟的宽带互联网服务而受到广泛关注。本文对迄今为止规模最大的低地球轨道卫星星座——星链网络——进行了大规模测量研究。我们首先提出一种高效发现活跃星链用户路由器的方法，在102个国家及123个地区识别出约320万个IPv6地址。据我们所知，这是目前最完整的星链用户路由器活跃IPv6地址列表。基于已发现的用户路由器，我们绘制了由33个接入点（PoP）及其间70条连接构成的星链骨干网络拓扑。此外，我们对活跃星链用户及接入点进行了详细的统计分析。最后，我们总结了星链网络采用的IPv6地址分配策略。骨干网络数据集已在https://ki3.org.cn/#/starlink-network公开。