There are around 100,000 Autonomous Systems advertised on the global routing table on any given day. Not all of them carry the same weight. A tier-1 backbone, a national mobile carrier, a regional cable ISP, and a small business AS all show up the same way in BGP, as a number with a name attached. Treating them as equals is a mistake most IP intelligence work eventually has to confront.
We’ve published IPinfo ASN Rankings to put a number on that weight. Every AS we track gets a rank across four lenses:
- Overall: a weighted blend of traffic and infrastructure, surfaced when you don’t yet know which dimension matters.
- Traffic: who reaches the most users. Mobile carriers and consumer ISPs dominate here.
- Infrastructure: who carries the most internet paths. Tier-1 transit and backbone networks dominate here.
- Country: the overall ranking restricted to networks registered in the same country, so comparisons stay like-for-like.
We are tracking 42,355 networks at launch (May, 2026).
What the leaderboard tells you
A few entries from the global top 10 are worth pulling out, because they make the difference between the three lenses concrete:
- AS55836 Reliance Jio: Overall #1, Traffic #1, Infrastructure #66. A consumer-reach giant whose Overall position is pulled almost entirely by traffic.
- AS3356 Level 3: Overall #6, Traffic #302, Infrastructure #1. A tier-1 transit backbone that almost no end users connect to directly. The Overall position is pulled almost entirely by infrastructure.
- AS6939 Hurricane Electric: Overall #7, Traffic #4,391, Infrastructure #2. Even more extreme. HE wouldn’t appear in a traffic-only top 4,000, and it wouldn’t appear in a peering-only top 10 in the same place. The blend is what places it here.
If a single ranking surprises you, the other three usually explain why.
How the ranking is built
The methodology blends two families of signals.
Traffic signals capture how much real-world user activity sits behind a network. We combine several independent traffic sources, weighting unique IPs more heavily than raw request volume so that a single high-volume IP cannot dominate. The sources include CDN-derived traffic, device telemetry, WiFi-derived signals, and API request patterns.
Infrastructure signals capture how central a network is to internet routing. The two main inputs here are AS hegemony, a measure of how many BGP paths transit through a network computed from public routing data, and router presence discovered via our own traceroute campaigns. Customer cone size and transit router counts feed in as well.
The Overall rank weights traffic and infrastructure together. We chose to lean traffic-heavy because most of our customers care about user reach first. CAIDA’s ASRank, by comparison, leans peering-heavy. Both views are valid, and we publish them side by side so you can pick the one that fits your question.
We deliberately don’t disclose the exact weights or the individual data partners behind the traffic signals. They’re proprietary, and the rankings would be easy to game if we did. What we can say is that the inputs are diverse enough that no single signal can carry an AS into the top 100 on its own.
Stability and refresh cadence
Rankings are computed from 90-day rolling data and refreshed monthly. The long window is intentional. Month-to-month rank stability matters more than chasing daily fluctuations, and a 90-day window smooths over short-term traffic anomalies, partial outages, and probe rotations.
Networks brand-new to the routing table, or with very little observable traffic, may surface as unranked. As the dataset matures and new signals are added, some of those gaps will close.
Why we built this
The most common requests we get are variants of “is this ASN important?” These come from teams sizing partner integrations, security teams deciding which ASNs to monitor more closely, and researchers picking sample networks. Until now the honest answer was “depends what you mean by important.” The rankings page is our attempt to make that question answerable in one click, while keeping the underlying lenses visible so the answer isn’t a black box.
The full top-50 and per-country leaderboards are live at ipinfo.io/asn-rankings. If you need the raw ranking dataset, with per-country breakdowns, history, and access to the underlying signals, get in touch and we’ll set you up.