Duolingo
Duolingo Application
The following page provides details on domains, networks, IPs, hosting services, and content delivery networks used by Duolingo.
Description

Duolingo offers courses in a wide variety of languages, including popular ones like Spanish, French, German, and Chinese, as well as less commonly studied languages like Irish, and Swahili, and High Valyrian.
Category | Career and Education |
Web Link | Duolingo - Home Page |
Application Domains
The application domains data shown here is available in our Netify Data Feeds solution. The data is accessible via our IP API as well as downloadable datasets.
Domains
Primary Domains
Primary Domains are owned and managed by the application vendor.
Platform Domains are often provided by hosting providers, content delivery networks, SaaS platforms and other third parties. It is important to identify these domains for DNS filters and hostname blocklists.Platform Domains
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{hidden}.alikunlun.com | and 4 more |
SaaS - Software-as-a-Service
Applications often use various third party platforms for providing authentication, advertising, cybersecurity, e-mail services and more. The Software-as-a-Service (SaaS) platforms used by Duolingo are summarized below.
SaaS solutions are often deployed on multiple IPs across different geographical points-of-presence. In addition, it is common for these IP addresses to be shared by multiple applications.
SaaS | # of IPs |
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|
8 |
|
5 |
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2 |
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5 |
Service | Category | Sample IP | IP Count |
---|---|---|---|
|
Technology | 185.199.108.153 | 8 IPs |
|
Advertiser | 34.237.219.119 | 5 IPs |
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Shopping | 23.227.38.74 | 2 IPs |
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Business | 34.224.125.36 | 5 IPs |
Hosting
Cloud hosting vendors like AWS and Microsoft Azure provide cloud-based computing and network resources to deliver applications. The hosting platforms used by Duolingo are summarized below by geographical points-of-presence (PoP). Each PoP can host many IPs to deliver an application.
Cloud Hosts | # of IPs |
---|---|
|
723 |
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2 |
|
12 |
|
27 |
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2 |
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1 |
Host | PoP | Location | IPs |
---|---|---|---|
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New Delhi | India | 1 IP |
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Anycast | Global | 2 IPs |
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Anycast | Global | 2 IPs |
|
Ashburn | United States | 723 IPs |
|
Core | China | 3 IPs |
|
Core | United States | 7 IPs |
|
Amsterdam | Netherlands | 8 IPs |
|
London | United Kingdom | 1 IP |
|
Bangkok | Thailand | 2 IPs |
|
Cairo | Egypt | 2 IPs |
|
Lagos | Nigeria | 4 IPs |
|
Richmond | United States | 1 IP |
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Des Moines | United States | 1 IP |
|
Amsterdam | Netherlands | 1 IP |
|
Singapore | Singapore | 1 IP |
|
Sydney | Australia | 2 IPs |
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Dublin | Ireland | 1 IP |
|
Gaevle | Sweden | 1 IP |
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San Francisco | United States | 1 IP |
|
Seoul | South Korea | 1 IP |
|
Tokyo | Japan | 1 IP |
|
Melbourne | Australia | 1 IP |
Content Delivery Networks - CDNs
In order to get information to end users more quickly, many applications are distributed from multiple geographical points-of-presence (PoPs) using Content Delivery Networks (CDNs). Each PoP can host many IPs to deliver an application. A sample IP is provided.
Take special note of CDNs that use Anycast technology. Anycast makes it possible to route a single IP address to a variety of different geographic locations. In other words, one global Anycast IP is hosted in multiple geographic locations.
CDNs | # of IPs |
---|---|
|
6018 |
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874 |
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151 |
Anycast
CDN | Network | Location | Sample IP | IPs |
---|---|---|---|---|
|
|
Global | 3.169.85.33 | 8 IPs |
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Global | 199.232.139.7 | 16 IPs |
PoP Locations
CDN | Network | PoP | Location | IPs |
---|---|---|---|---|
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London | United Kingdom | 9 IPs |
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Moscow | Russia | 16 IPs |
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Seoul | South Korea | 16 IPs |
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Bangkok | Thailand | 29 IPs |
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Singapore | Singapore | 72 IPs |
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Ho Chi Minh City | Vietnam | 10 IPs |
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Frankfurt | Germany | 16 IPs |
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Santiago | Chile | 8 IPs |
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Lima | Peru | 8 IPs |
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Stockholm | Sweden | 12 IPs |
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Madrid | Spain | 17 IPs |
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Paris | France | 16 IPs |
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Muscat | Oman | 8 IPs |
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Taipei | Taiwan | 16 IPs |
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Amsterdam | Netherlands | 8 IPs |
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Kyiv | Ukraine | 8 IPs |
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Cyberjaya | Malaysia | 16 IPs |
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Cairo | Egypt | 12 IPs |
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Jakarta | Indonesia | 8 IPs |
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Istanbul | Turkey | 9 IPs |
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Hanoi | Vietnam | 10 IPs |
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Bogota | Colombia | 16 IPs |
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Melbourne | Australia | 8 IPs |
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Hong Kong | Hong Kong | 8 IPs |
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Osaka | Japan | 15 IPs |
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Milan | Italy | 16 IPs |
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Buenos Aires | Argentina | 8 IPs |
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San Jose | United States | 8 IPs |
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Ashburn | United States | 8 IPs |
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Sydney | Australia | 8 IPs |
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Lagos | Nigeria | 4 IPs |
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Tokyo | Japan | 8 IPs |
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Mumbai | India | 16 IPs |
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New Delhi | India | 14 IPs |
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Jakarta | Indonesia | 16 IPs |
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Ho Chi Minh City | Vietnam | 19 IPs |
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Hanoi | Vietnam | 17 IPs |
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Sao Paulo | Brazil | 14 IPs |
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Tokyo | Japan | 8 IPs |
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Dubai | United Arab Emirates | 8 IPs |
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Manila | Philippines | 8 IPs |
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Bangkok | Thailand | 9 IPs |
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Manila | Philippines | 8 IPs |
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Sofia | Bulgaria | 2 IPs |
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Manila | Philippines | 2 IPs |
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Kuala Lumpur | Malaysia | 2 IPs |
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Seoul | South Korea | 2 IPs |
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Milan | Italy | 4 IPs |
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London | United Kingdom | 5 IPs |
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Lisbon | Portugal | 2 IPs |
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Dallas | United States | 5 IPs |
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Tokyo | Japan | 5 IPs |
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Frankfurt | Germany | 4 IPs |
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Atlanta | United States | 4 IPs |
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Seattle | United States | 2 IPs |
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Hong Kong | Hong Kong | 2 IPs |
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Melbourne | Australia | 2 IPs |
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Stockholm | Sweden | 2 IPs |
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Osaka | Japan | 2 IPs |
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Sao Paulo | Brazil | 4 IPs |
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Toronto | Canada | 2 IPs |
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Madrid | Spain | 3 IPs |
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Fujairah | United Arab Emirates | 2 IPs |
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Santiago | Chile | 2 IPs |
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Cape Town | South Africa | 2 IPs |
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Oslo | Norway | 2 IPs |
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Helsinki | Finland | 2 IPs |
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Vienna | Austria | 2 IPs |
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Dublin | Ireland | 2 IPs |
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Copenhagen | Denmark | 2 IPs |
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Singapore | Singapore | 3 IPs |
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Marseille | France | 2 IPs |
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Hyderabad | India | 2 IPs |
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San Jose | United States | 1 IP |
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Mumbai | India | 2 IPs |
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Chennai | India | 1 IP |
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Johannesburg | South Africa | 2 IPs |
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Accra | Ghana | 1 IP |
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Rome | Italy | 1 IP |
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Miami | United States | 2 IPs |
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Vancouver | Canada | 2 IPs |
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New Delhi | India | 2 IPs |
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Sydney | Australia | 2 IPs |
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Newark | United States | 1 IP |
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Montreal | Canada | 3 IPs |
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Amsterdam | Netherlands | 2 IPs |
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Rio de Janeiro | Brazil | 2 IPs |
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Fortaleza | Brazil | 2 IPs |
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Ashburn | United States | 4 IPs |
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Dubai | United Arab Emirates | 2 IPs |
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Chicago | United States | 4 IPs |
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Los Angeles | United States | 2 IPs |
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Honolulu | United States | 2 IPs |
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Brussels | Belgium | 2 IPs |
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New York | United States | 2 IPs |
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Brisbane | Australia | 2 IPs |
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Houston | United States | 2 IPs |
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Buenos Aires | Argentina | 2 IPs |
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Kolkata | India | 2 IPs |
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Lima | Peru | 2 IPs |
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Paris | France | 1 IP |
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Rotterdam | Netherlands | 1 IP |
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Edge - Buenos Aires | Argentina | 73 IPs |
|
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Edge - Johannesburg | South Africa | 124 IPs |
|
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Edge - Vienna | Austria | 72 IPs |
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Edge - Montreal | Canada | 74 IPs |
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Edge - Perth | Australia | 65 IPs |
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Edge - Copenhagen | Denmark | 72 IPs |
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Edge - Hong Kong | Hong Kong | 87 IPs |
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Edge - London | United Kingdom | 114 IPs |
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Edge - Tel Aviv | Israel | 75 IPs |
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Edge - Warsaw | Poland | 81 IPs |
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Edge - Amsterdam | Netherlands | 81 IPs |
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Edge - Seattle | United States | 12 IPs |
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Edge - Mumbai | India | 75 IPs |
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Edge - Sydney | Australia | 129 IPs |
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Edge - Dallas | United States | 90 IPs |
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Edge - San Francisco | United States | 62 IPs |
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Edge - Paris | France | 91 IPs |
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Edge - New York | United States | 93 IPs |
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Edge - Zurich | Switzerland | 77 IPs |
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Edge - Manila | Philippines | 59 IPs |
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Edge - Budapest | Hungary | 82 IPs |
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Edge - Frankfurt | Germany | 119 IPs |
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Edge - Columbus | United States | 39 IPs |
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Edge - Cape Town | South Africa | 72 IPs |
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Edge - Helsinki | Finland | 94 IPs |
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Edge - Sao Paulo | Brazil | 68 IPs |
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Edge - Athens | Greece | 61 IPs |
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Edge - Marseille | France | 89 IPs |
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Edge - Auckland | New Zealand | 73 IPs |
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Edge - Los Angeles | United States | 88 IPs |
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Edge - Minneapolis | United States | 18 IPs |
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Edge - Hamburg | Germany | 16 IPs |
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Edge - Atlanta | United States | 35 IPs |
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Edge - Osaka | Japan | 24 IPs |
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Edge - Kuala Lumpur | Malaysia | 79 IPs |
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Edge - Melbourne | Australia | 91 IPs |
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Edge - Chennai | India | 75 IPs |
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Edge - Miami | United States | 123 IPs |
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Edge - Bangkok | Thailand | 71 IPs |
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Edge - Prague | Czechia | 16 IPs |
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Edge - Santiago de Queretaro | Mexico | 70 IPs |
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Edge - Zagreb | Croatia | 61 IPs |
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Edge - Houston | United States | 91 IPs |
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Edge - Milan | Italy | 145 IPs |
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Edge - Ashburn | United States | 80 IPs |
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Edge - Dubai | United Arab Emirates | 79 IPs |
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Edge - Fortaleza | Brazil | 74 IPs |
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Edge - Denver | United States | 23 IPs |
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Edge - Madrid | Spain | 82 IPs |
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Edge - Kansas City | United States | 69 IPs |
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Edge - Stockholm | Sweden | 78 IPs |
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Edge - Singapore | Singapore | 97 IPs |
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Edge - Manama | Bahrain | 77 IPs |
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Edge - Chicago | United States | 89 IPs |
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Edge - Istanbul | Turkey | 79 IPs |
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Edge - Lisbon | Portugal | 61 IPs |
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Edge - Muscat | Oman | 73 IPs |
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Edge - Dublin | Ireland | 24 IPs |
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Edge - Santiago | Chile | 77 IPs |
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Edge - Kolkata | India | 51 IPs |
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Edge - Tokyo | Japan | 84 IPs |
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Edge - Taipei | Taiwan | 78 IPs |
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Edge - Toronto | Canada | 35 IPs |
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Edge - Seoul | South Korea | 81 IPs |
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Edge - Brisbane | Australia | 81 IPs |
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Edge - Sofia | Bulgaria | 85 IPs |
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Edge - Philadelphia | United States | 43 IPs |
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Edge - Calgary | Canada | 29 IPs |
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Edge - Hyderabad | India | 20 IPs |
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Edge - Berlin | Germany | 12 IPs |
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Edge - New Delhi | India | 71 IPs |
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Edge - Boston | United States | 12 IPs |
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Edge - Bucharest | Romania | 20 IPs |
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Edge - Barcelona | Spain | 70 IPs |
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Edge - Nairobi | Kenya | 77 IPs |
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Edge - Manchester | United Kingdom | 74 IPs |
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Edge - Ho Chi Minh City | Vietnam | 21 IPs |
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Edge - Bogota | Colombia | 80 IPs |
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Edge - Rome | Italy | 45 IPs |
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Edge - Oslo | Norway | 16 IPs |
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Edge - Rio de Janeiro | Brazil | 77 IPs |
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Edge - Brussels | Belgium | 68 IPs |
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Edge - Jakarta | Indonesia | 12 IPs |
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Edge - Vancouver | Canada | 56 IPs |
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Edge - Nashville | United States | 12 IPs |
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Edge - Dusseldorf | Germany | 40 IPs |
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Edge - Phoenix | United States | 12 IPs |
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Edge - Bengaluru | India | 16 IPs |
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Edge - Lima | Peru | 64 IPs |
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Edge - Pittsburgh | United States | 12 IPs |
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Edge - Lagos | Nigeria | 71 IPs |
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Edge - Cairo | Egypt | 65 IPs |
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Edge - Jeddah | Saudi Arabia | 32 IPs |
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Edge - Munich | Germany | 16 IPs |
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Edge - Tampa | United States | 4 IPs |
Other Locations
CDN | Network | PoP | Location | IPs |
---|---|---|---|---|
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Core Network | China | 143 IPs |
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ASN AS9873 | Core Network | Laos | 8 IPs |
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Core Network | United States | 81 IPs |
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Core Network | Indonesia | 16 IPs |
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Core Network | Philippines | 8 IPs |
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Core Network | Germany | 8 IPs |
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Core Network | United Kingdom | 8 IPs |
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Core Network | France | 8 IPs |
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ASN AS45903 | Core Network | Vietnam | 8 IPs |
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ASN AS4609 | Core Network | Macao | 10 IPs |
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ASN AS55329 | Core Network | Cambodia | 8 IPs |
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