ASN Lookup

Detailed information pages for major Autonomous System Numbers (ASNs). Each page includes the owner, country, network type, and context for what seeing this ASN means in an IP or VPN leak lookup.

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All ASN pages

AS13335Cloudflare Inc. · CDN / DNS AS15169Google LLC · Cloud / DNS AS16509Amazon.com Inc. (AWS) · Cloud AS8075Microsoft Corporation · Cloud AS14061DigitalOcean LLC · Hosting AS32934Meta Platforms Inc. · Tech AS20940Akamai Technologies · CDN AS24940Hetzner Online GmbH · Hosting AS7922Comcast Cable Communications · ISP AS7018AT&T Services Inc. · ISP AS701Verizon Business · ISP AS3320Deutsche Telekom AG · Telecom AS2856British Telecommunications plc · ISP AS5607Sky UK Limited · ISP AS12322Free SAS (Iliad) · ISP AS4134China Telecom Backbone · Telecom AS9808China Mobile Communications · Telecom AS4837China Unicom Backbone · Telecom AS9009M247 Europe SRL · Hosting / VPN AS6939Hurricane Electric LLC · Transit AS174Cogent Communications · Transit AS3356Lumen Technologies (Level 3) · Transit AS1299Arelion (Telia Carrier) · Transit AS2914NTT Global IP Network · Transit AS19281Quad9 · DNS Resolver AS30633Leaseweb Netherlands B.V. · Hosting AS60068Datacamp Limited (CDN77) · CDN / Hosting AS136907Huawei Cloud Service · Cloud AS45102Alibaba (US) Technology Co. · Cloud AS394711Mullvad VPN AB · VPN AS8359MTS PJSC · Telecom AS12389Rostelecom · Telecom AS4766Korea Telecom · Telecom AS9264Bharti Airtel Ltd · Telecom AS4755Tata Communications · Transit AS6830Liberty Global B.V. · ISP AS36351SoftLayer Technologies (IBM Cloud) · Cloud AS49981WorldStream B.V. · Hosting AS3269Telecom Italia Sparkle · Telecom AS31898Oracle Corporation · Cloud AS20115Charter Communications (Spectrum) · ISP AS22773Cox Communications Inc. · ISP AS21928T-Mobile USA, Inc. · Mobile ISP AS3215Orange S.A. (France Telecom) · ISP AS15557SFR SA · ISP AS1273Vodafone Limited (UK) · ISP AS3209Vodafone GmbH (Germany) · ISP AS812Rogers Communications Canada Inc. · ISP AS577Bell Canada · ISP AS6327Shaw Communications (Rogers) · ISP

What is an ASN?

An Autonomous System Number (ASN) is a unique identifier assigned to a network operator — an ISP, cloud provider, university, or company — that controls a block of IP addresses and routes traffic through the internet. When you run a VPN leak test or IP lookup, the ASN tells you which organization controls the IP address you are connecting through.

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