Kentik Blog

On March 18, 2025, North Korea’s BGP routes became RPKI-invalid due to the publication of a faulty ROA. In this post, we’ll visualize the impact on the propagation of affected routes and what North Korea (and you too!) can do to avoid problems with the optional maxLength attribute.

AWS NAT Gateways are essential for private subnet access but can quickly become a costly burden, even when idle. With Kentik, cloud and network engineers gain deep visibility into NAT Gateway traffic, allowing them to identify underutilized gateways, analyze high-cost usage, and explore cost-saving alternatives like VPC Endpoints, Internet Gateways, or direct peering. By optimizing traffic routing and eliminating unnecessary NAT Gateway expenses, teams can significantly reduce cloud networking costs while improving efficiency.

Modern network operators need modern observability tools. In this post, we explore why Deepfield — a traditional network flow analytics platform — falls short in providing comprehensive insights required for today’s network operations, and how Kentik’s modern data platform is purpose-built for today’s infrastructure teams.

CLM Chowder is a new series which highlights notable observations of cloud connectivity surfaced by Kentik’s Cloud Latency Map. In this edition, we look at measurements from Alibaba (China), latency swings from South Africa, and a temporary latency jump from Marseilles to Asia.

NANOG 93 brought the networking community together for insightful discussions on the future of connectivity, emphasizing continuous learning, adaptation, and collaboration. Justin Ryburn highlights key takeaways from this premier event in the world of networking.

In this second installment of Beyond Their Intended Scope, we analyze a recent BGP leak out of Brazil that briefly affected networks around the world. Because this routing mishap was a path leak (i.e., did not involve any mis-originations and therefore immune from RPKI ROV protection), it demonstrates why we need a thing called ASPA … ASAP.

Cloud networking costs can escalate due to inefficient routing and limited visibility. Kentik’s cloud visibility and analytics solution helps engineers optimize transit, reduce costs, and improve performance by analyzing AWS Transit Gateways and exploring alternatives like direct peering, storage endpoints, and AWS CloudWAN.

In 2024, the Kentik Cares Giving Program achieved incredible success! We’ve collectively donated $14,904 to causes close to our hearts. From local shelters to global relief efforts, we’ve made a real impact. Curious to see how we did it and what’s next? Read on to learn more about our first year of giving back — and the positive change we’re creating together!

AI has the power to optimize network performance, detect anomalies, and improve capacity planning, but its effectiveness depends on high-quality data. Without a strong data foundation, AI remains a theoretical tool rather than delivering real operational value.

Kentik’s Doug Madory looks into this weekend’s 14-hour outage of popular video sharing service TikTok, which was slated to be banned from the US per recent legislation. While TikTok came back, it is notably no longer being served by parent company Bytedance’s US CDN. We delve into the traffic statistics in this blog post.