duolingo.com change history

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Subdomains of duolingo.com

Subdomains

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SubdomainsScreenshotsChangesHistory

Changes in all scans

Subdomain	Type	Changed	Open

This scan All scans

Changes in all scans

Mar 18, 20267 months ago, 1 change in this scan

push.duolingo.com

+ Owner: Amazon.com, Inc. (AS16509)

Mar 17, 20268 months ago, 2 changes in this scan

duolingo-leaderboards-prod.duolingo.com

+ Cloud provider: AWS

push.duolingo.com

- Owner: Amazon.com, Inc. (AS16509)

Mar 17, 20268 months ago, 1 change in this scan

duolingo-leaderboards-prod.duolingo.com

- Cloud provider: AWS

Mar 16, 20268 months ago, 1 change in this scan

emoji.duolingo.com

+ Open port: 443+ Open port: 445+ Open port: 8080

Mar 16, 20268 months ago, 33 changes in this scan

alan-dev-6.infra-eks-dev.duolingo.com

blog.englishtest.duolingo.com

+ Ip: 151.101.207.7+ CNAME: duolingo-englishtest-blog.ghost.io

email.events.duolingo.com

+ Ip: 34.102.239.211+ CNAME: mailgun.org

emoji.duolingo.com

- Open port: 443- Open port: 445- Open port: 8080

employee-tools.duolingo.com

+ Ip: 34.193.193.68+ Ip: 52.87.130.74+ Ip: 54.165.22.123

experimental-dev-1.infra-eks-dev.duolingo.com

experimental-dev-2.infra-eks-dev.duolingo.com

gpn.duolingo.com

+ Ip: 199.60.103.2+ Ip: 199.60.103.254+ CNAME: 41687574.group24.sites.hubspot.net

infra-eks-argo-cd-webhooks.infra-eks-dev.duolingo.com

+ Ip: 3.217.115.210+ Ip: 44.196.235.238+ Ip: 98.88.167.117

internal-dev-1.infra-eks-dev.duolingo.com

internal-dev-2.infra-eks-dev.duolingo.com

jenkins-ci.duolingo.com

+ Ip: 100.25.59.11

kanalu-dev-1.infra-eks-dev.duolingo.com

kenny-dev-1.infra-eks-dev.duolingo.com

leo-dev-2-1.infra-eks-dev.duolingo.com

management-dev-1.infra-eks-dev.duolingo.com

obsv-dev-1.k8s.duolingo.com

+ Ip: 18.208.119.194+ Ip: 3.221.97.203+ Ip: 54.152.92.74

obsv-prod-1.k8s.duolingo.com

+ Ip: 18.208.119.194+ Ip: 3.221.97.203+ Ip: 54.152.92.74

obsv-stage-1.k8s.duolingo.com

+ Ip: 18.208.119.194+ Ip: 3.221.97.203+ Ip: 54.152.92.74

okta.duolingo.com

+ Ip: 35.71.190.245+ Ip: 52.223.7.86+ CNAME: duolingo.customdomains.okta.com

prod-cluster-1.k8s.duolingo.com

+ Ip: 18.208.119.194+ Ip: 3.221.97.203+ Ip: 54.152.92.74

research.duolingo.com

+ Ip: 185.199.108.153+ Ip: 185.199.109.153+ Ip: 185.199.110.153+ Ip: 185.199.111.153+ CNAME: duolingo.github.io

sharedtask.duolingo.com

+ Ip: 185.199.108.153+ Ip: 185.199.109.153+ Ip: 185.199.110.153+ Ip: 185.199.111.153+ CNAME: duolingo.github.io

stage-cluster-1.k8s.duolingo.com

+ Ip: 18.208.119.194+ Ip: 3.221.97.203+ Ip: 54.152.92.74

status.duolingo.com

+ Ip: 18.160.102.15+ Ip: 18.160.102.60+ Ip: 18.160.102.62+ Ip: 18.160.102.96+ CNAME: npp8bpkjp8hr.stspg-customer.com

store-asia.duolingo.com

+ Ip: 104.18.217.221+ Ip: 104.18.218.221+ CNAME: vip.myshopline.shop

store-eu.duolingo.com

+ Ip: 23.227.38.65

trust.englishtest.duolingo.com

+ Ip: 104.18.26.175+ Ip: 104.18.27.175+ CNAME: 6244c2e4b2942148a67410e0.cname.vantatrust.com

university.duolingo.com

+ Ip: 198.185.159.144+ Ip: 198.185.159.145+ Ip: 198.49.23.144+ Ip: 198.49.23.145+ CNAME: ext-cust.squarespace.com

wingctl-api.infra-eks-dev.duolingo.com

+ Ip: 3.212.73.12+ Ip: 54.172.76.77

wingctl-api.k8s.duolingo.com

+ Ip: 100.27.91.146+ Ip: 107.21.96.223

www.englishtest.duolingo.com

+ Ip: 100.29.61.184+ Ip: 34.226.156.229+ Ip: 52.202.121.226+ Ip: 52.73.32.120+ CNAME: englishtest.duolingo.com

www.push.duolingo.com

+ Ip: 108.157.214.21+ Ip: 108.157.214.4+ Ip: 108.157.214.53+ Ip: 108.157.214.79

Baseline scan from Mar 8, 2026. History starts here.

Subdomain	Type	Changed	Open
Mar 18, 20267 months ago1 in this scanOpen scan
		+ Owner: Amazon.com, Inc. (AS16509)
Mar 17, 20268 months ago2 in this scanOpen scan
		+ Cloud provider: AWS
		- Owner: Amazon.com, Inc. (AS16509)
Mar 17, 20268 months ago1 in this scanOpen scan
		- Cloud provider: AWS
Mar 16, 20268 months ago1 in this scanOpen scan
		+ Open port: 443+ Open port: 445+ Open port: 8080
Mar 16, 20268 months ago33 in this scanOpen scan

		+ Ip: 151.101.207.7+ CNAME: duolingo-englishtest-blog.ghost.io
		+ Ip: 34.102.239.211+ CNAME: mailgun.org
		- Open port: 443- Open port: 445- Open port: 8080
		+ Ip: 34.193.193.68+ Ip: 52.87.130.74+ Ip: 54.165.22.123


		+ Ip: 199.60.103.2+ Ip: 199.60.103.254+ CNAME: 41687574.group24.sites.hubspot.net
		+ Ip: 3.217.115.210+ Ip: 44.196.235.238+ Ip: 98.88.167.117


		+ Ip: 100.25.59.11




		+ Ip: 18.208.119.194+ Ip: 3.221.97.203+ Ip: 54.152.92.74
		+ Ip: 18.208.119.194+ Ip: 3.221.97.203+ Ip: 54.152.92.74
		+ Ip: 18.208.119.194+ Ip: 3.221.97.203+ Ip: 54.152.92.74
		+ Ip: 35.71.190.245+ Ip: 52.223.7.86+ CNAME: duolingo.customdomains.okta.com
		+ Ip: 18.208.119.194+ Ip: 3.221.97.203+ Ip: 54.152.92.74
		+ Ip: 185.199.108.153+ Ip: 185.199.109.153+ Ip: 185.199.110.153+ Ip: 185.199.111.153+ CNAME: duolingo.github.io
		+ Ip: 185.199.108.153+ Ip: 185.199.109.153+ Ip: 185.199.110.153+ Ip: 185.199.111.153+ CNAME: duolingo.github.io
		+ Ip: 18.208.119.194+ Ip: 3.221.97.203+ Ip: 54.152.92.74
		+ Ip: 18.160.102.15+ Ip: 18.160.102.60+ Ip: 18.160.102.62+ Ip: 18.160.102.96+ CNAME: npp8bpkjp8hr.stspg-customer.com
		+ Ip: 104.18.217.221+ Ip: 104.18.218.221+ CNAME: vip.myshopline.shop
		+ Ip: 23.227.38.65
		+ Ip: 104.18.26.175+ Ip: 104.18.27.175+ CNAME: 6244c2e4b2942148a67410e0.cname.vantatrust.com
		+ Ip: 198.185.159.144+ Ip: 198.185.159.145+ Ip: 198.49.23.144+ Ip: 198.49.23.145+ CNAME: ext-cust.squarespace.com
		+ Ip: 3.212.73.12+ Ip: 54.172.76.77
		+ Ip: 100.27.91.146+ Ip: 107.21.96.223
		+ Ip: 100.29.61.184+ Ip: 34.226.156.229+ Ip: 52.202.121.226+ Ip: 52.73.32.120+ CNAME: englishtest.duolingo.com
		+ Ip: 108.157.214.21+ Ip: 108.157.214.4+ Ip: 108.157.214.53+ Ip: 108.157.214.79
Baseline scan from Mar 8, 2026. History starts here.