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
 Alibaba CDN
|
{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 | # of IPs |
|---|---|
GitHub
|
8 |
Salesforce
|
5 |
Shopify
|
2 |
| Service | Category | Sample IP | IP Count |
|---|---|---|---|
|
GitHub
|
Technology | 185.199.108.153 | 8 IPs |
|
Salesforce
|
Advertiser | 3.92.120.28 | 5 IPs |
|
Shopify
|
Shopping | 23.227.38.74 | 2 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 |
|---|---|
Amazon AWS
|
592 |
Microsoft Azure
|
12 |
AWS Global Accelerator
|
2 |
Alibaba Cloud
|
4 |
China Telecom IDC
|
1 |
WP Engine
|
2 |
| Host | PoP | Location | IPs |
|---|---|---|---|
|
WP Engine
|
Anycast | Global | 2 IPs |
|
China Telecom IDC
|
Core | China | 1 IP |
|
Alibaba Cloud
|
Core | China | 4 IPs |
|
AWS Global Accelerator
|
Anycast | Global | 2 IPs |
|
Amazon AWS
|
Ashburn | United States | 592 IPs |
|
Microsoft Azure
|
Singapore | Singapore | 1 IP |
|
Microsoft Azure
|
Sydney | Australia | 2 IPs |
|
Microsoft Azure
|
Dublin | Ireland | 1 IP |
|
Microsoft Azure
|
Gaevle | Sweden | 1 IP |
|
Microsoft Azure
|
San Francisco | United States | 1 IP |
|
Microsoft Azure
|
Seoul | South Korea | 1 IP |
|
Microsoft Azure
|
Tokyo | Japan | 1 IP |
|
Microsoft Azure
|
Richmond | United States | 1 IP |
|
Microsoft Azure
|
Des Moines | United States | 1 IP |
|
Microsoft Azure
|
Amsterdam | Netherlands | 1 IP |
|
Microsoft Azure
|
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 |
|---|---|
Amazon CloudFront
|
5007 |
|
Alibaba CDN
|
568 |
Fastly
|
114 |
Anycast
| CDN | Network | Location | Sample IP | IPs |
|---|---|---|---|---|
|
Fastly
|
Fastly
|
Global | 146.75.19.7 | 15 IPs |
PoP Locations
| CDN | Network | PoP | Location | IPs |
|---|---|---|---|---|
|
Alibaba CDN
|
Alibaba Cloud
|
Osaka | Japan | 24 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
Moscow | Russia | 16 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
Johannesburg | South Africa | 8 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
San Jose | United States | 8 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
Muscat | Oman | 8 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
Seoul | South Korea | 16 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
Taipei | Taiwan | 8 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
Melbourne | Australia | 8 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
Sydney | Australia | 8 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
Stockholm | Sweden | 8 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
Madrid | Spain | 14 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
Milan | Italy | 16 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
Amsterdam | Netherlands | 8 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
Paris | France | 16 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
London | United Kingdom | 16 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
Singapore | Singapore | 47 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
Hong Kong | Hong Kong | 8 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
Manila | Philippines | 8 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
Bangkok | Thailand | 10 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
Frankfurt | Germany | 24 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
Ho Chi Minh City | Vietnam | 7 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
Buenos Aires | Argentina | 15 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
Santiago | Chile | 8 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
Lima | Peru | 8 IPs |
|
Alibaba CDN
|
Zenlayer
|
Tokyo | Japan | 8 IPs |
|
Alibaba CDN
|
Zenlayer
|
Sao Paulo | Brazil | 8 IPs |
|
Alibaba CDN
|
Zenlayer
|
Mumbai | India | 8 IPs |
|
Alibaba CDN
|
Zenlayer
|
New Delhi | India | 6 IPs |
|
Fastly
|
Fastly
|
Sofia | Bulgaria | 2 IPs |
|
Fastly
|
Fastly
|
Manila | Philippines | 2 IPs |
|
Fastly
|
Fastly
|
Kuala Lumpur | Malaysia | 2 IPs |
|
Fastly
|
Fastly
|
Seoul | South Korea | 2 IPs |
|
Fastly
|
Fastly
|
Milan | Italy | 2 IPs |
|
Fastly
|
Fastly
|
Rome | Italy | 2 IPs |
|
Fastly
|
Fastly
|
London | United Kingdom | 6 IPs |
|
Fastly
|
Fastly
|
Lisbon | Portugal | 2 IPs |
|
Fastly
|
Fastly
|
Dallas | United States | 5 IPs |
|
Fastly
|
Fastly
|
Tokyo | Japan | 5 IPs |
|
Fastly
|
Fastly
|
Frankfurt | Germany | 4 IPs |
|
Fastly
|
Fastly
|
Atlanta | United States | 6 IPs |
|
Fastly
|
Fastly
|
Seattle | United States | 2 IPs |
|
Fastly
|
Fastly
|
San Jose | United States | 2 IPs |
|
Fastly
|
Fastly
|
Hong Kong | Hong Kong | 2 IPs |
|
Fastly
|
Fastly
|
Melbourne | Australia | 2 IPs |
|
Fastly
|
Fastly
|
Stockholm | Sweden | 2 IPs |
|
Fastly
|
Fastly
|
Osaka | Japan | 2 IPs |
|
Fastly
|
Fastly
|
Sao Paulo | Brazil | 4 IPs |
|
Fastly
|
Fastly
|
Toronto | Canada | 2 IPs |
|
Fastly
|
Fastly
|
Madrid | Spain | 3 IPs |
|
Fastly
|
Fastly
|
Fujairah | United Arab Emirates | 2 IPs |
|
Fastly
|
Fastly
|
Los Angeles | United States | 1 IP |
|
Fastly
|
Fastly
|
Vancouver | Canada | 2 IPs |
|
Fastly
|
Fastly
|
Santiago | Chile | 2 IPs |
|
Fastly
|
Fastly
|
Cape Town | South Africa | 2 IPs |
|
Fastly
|
Fastly
|
Oslo | Norway | 2 IPs |
|
Fastly
|
Fastly
|
Helsinki | Finland | 2 IPs |
|
Fastly
|
Fastly
|
Vienna | Austria | 2 IPs |
|
Fastly
|
Fastly
|
New Delhi | India | 2 IPs |
|
Fastly
|
Fastly
|
Dublin | Ireland | 2 IPs |
|
Fastly
|
Fastly
|
Copenhagen | Denmark | 2 IPs |
|
Fastly
|
Fastly
|
Singapore | Singapore | 3 IPs |
|
Fastly
|
Fastly
|
Marseille | France | 2 IPs |
|
Fastly
|
Fastly
|
Hyderabad | India | 2 IPs |
|
Fastly
|
Fastly
|
Mumbai | India | 1 IP |
|
Fastly
|
Fastly
|
Chennai | India | 1 IP |
|
Fastly
|
Fastly
|
Johannesburg | South Africa | 1 IP |
|
Fastly
|
Fastly
|
Newark | United States | 1 IP |
|
Fastly
|
Fastly
|
Sydney | Australia | 1 IP |
|
Fastly
|
Fastly
|
Phoenix | United States | 1 IP |
|
Fastly
|
Fastly
|
Paris | France | 1 IP |
|
Fastly
|
Fastly
|
Accra | Ghana | 1 IP |
|
Fastly
|
Fastly
|
Adelaide | Australia | 1 IP |
|
Fastly
|
Fastly
|
Miami | United States | 1 IP |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Columbus | United States | 32 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Berlin | Germany | 31 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Istanbul | Turkey | 12 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Dubai | United Arab Emirates | 74 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Buenos Aires | Argentina | 70 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Lisbon | Portugal | 19 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Johannesburg | South Africa | 102 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Marseille | France | 79 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Milan | Italy | 129 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Madrid | Spain | 67 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Bucharest | Romania | 16 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Santiago de Queretaro | Mexico | 59 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Muscat | Oman | 69 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Vienna | Austria | 71 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Atlanta | United States | 45 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Montreal | Canada | 70 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Paris | France | 82 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Dublin | Ireland | 74 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Chicago | United States | 84 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Santiago | Chile | 70 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Sao Paulo | Brazil | 79 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Perth | Australia | 65 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Osaka | Japan | 44 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Kolkata | India | 69 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Cape Town | South Africa | 70 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Helsinki | Finland | 72 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Toronto | Canada | 75 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Tokyo | Japan | 111 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Stockholm | Sweden | 80 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Calgary | Canada | 29 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Manila | Philippines | 79 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Singapore | Singapore | 83 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Zurich | Switzerland | 74 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Bangkok | Thailand | 62 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Rome | Italy | 18 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Kansas City | United States | 65 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Minneapolis | United States | 20 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Miami | United States | 122 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Philadelphia | United States | 22 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Ashburn | United States | 50 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Dallas | United States | 78 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - New York | United States | 78 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Los Angeles | United States | 76 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Seoul | South Korea | 79 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Jakarta | Indonesia | 36 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Taipei | Taiwan | 74 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Tel Aviv | Israel | 70 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - San Francisco | United States | 75 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Denver | United States | 19 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Nairobi | Kenya | 77 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Frankfurt | Germany | 98 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Hyderabad | India | 40 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Copenhagen | Denmark | 70 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Chennai | India | 74 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Hong Kong | Hong Kong | 66 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Sydney | Australia | 123 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - London | United Kingdom | 103 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Newark | United States | 15 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Manama | Bahrain | 72 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Warsaw | Poland | 71 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Amsterdam | Netherlands | 75 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Houston | United States | 36 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Kuala Lumpur | Malaysia | 67 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Melbourne | Australia | 85 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Seattle | United States | 19 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Mumbai | India | 16 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - New Delhi | India | 70 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Dusseldorf | Germany | 24 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Hamburg | Germany | 40 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Brisbane | Australia | 47 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Boston | United States | 26 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Nashville | United States | 2 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Lima | Peru | 32 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Sofia | Bulgaria | 80 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Barcelona | Spain | 67 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Budapest | Hungary | 75 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Munich | Germany | 4 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Salt Lake City | United States | 2 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Athens | Greece | 62 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Auckland | New Zealand | 3 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Oslo | Norway | 35 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Prague | Czechia | 63 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Zagreb | Croatia | 59 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Rio de Janeiro | Brazil | 4 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Fortaleza | Brazil | 72 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Edge - Lagos | Nigeria | 4 IPs |
Other Locations
| CDN | Network | PoP | Location | IPs |
|---|---|---|---|---|
|
Alibaba CDN
|
Alibaba Cloud
|
Core Network | United States | 72 IPs |
|
Alibaba CDN
|
Alibaba Cloud
|
Core Network | United Kingdom | 8 IPs |
|
Alibaba CDN
|
China Telecom IDC
|
Core Network | China | 125 IPs |
|
Alibaba CDN
|
ASN AS9873 | Core Network | Laos | 8 IPs |
|
Alibaba CDN
|
Converge ICT
|
Core Network | Philippines | 8 IPs |
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