Hostname
duolingo.com
Last fetched
duolingo.com resolves to 20 IPv4 addresses operated by AMAZON-AES - Amazon.com, Inc. in US. WHOIS lists iana:468 as the registrar.
Nutrition Label
Resolution chain
duolingo.com resolves to 20 distinct IPv4 addresses via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.
WHOIS identity
- Registrar
- iana:468
- Organization
- on behalf of duolingo.com owner
- Contact emails
- biglou@gmail.com
- 129aa04a-b812-4cee-869d-8f096e45760e@identity-protect.org
- 50d9cb11-9a23-43f9-870a-311c6d746027@identity-protect.org
- 62909914-8253-49ca-8a10-00783657d821@identity-protect.org
- 63617747-0b4d-4fde-8546-c11b0af23a3a@identity-protect.org
- 68020816-dd38-4007-8f72-dbed352b02df@identity-protect.org
- cd76db5d-98d4-421a-aecd-0b4666e8b35e@identity-protect.org
- owner-10050451@duolingo.com.whoisprivacyservice.org
- owner-10123018@duolingo.com.whoisprivacyservice.org
- owner-10184285@duolingo.com.whoisprivacyservice.org
- owner-1031756@duolingo.com.whoisprivacyservice.org
- owner-10320400@duolingo.com.whoisprivacyservice.org
- owner-10381667@duolingo.com.whoisprivacyservice.org
- owner-10454234@duolingo.com.whoisprivacyservice.org
- owner-10485853@duolingo.com.whoisprivacyservice.org
- owner-10590349@duolingo.com.whoisprivacyservice.org
- owner-10662916@duolingo.com.whoisprivacyservice.org
- owner-10683235@duolingo.com.whoisprivacyservice.org
- owner-10724183@duolingo.com.whoisprivacyservice.org
- owner-10755802@duolingo.com.whoisprivacyservice.org
- and 61 more
Subdomains
326 observed subdomains of duolingo.com.
Showing 25 of 326. View all subdomains →
Web-graph footprint
Distinct hostnames that link to or from duolingo.com in the public web crawl.
20,126 sites link to this hostname.
Sample inbound links
Threat posture
History
Mail and authentication
MX records
SPF policy
11 SPF mechanisms authorising senders for duolingo.com.
| Mechanism | Target |
|---|---|
| SPF_INCLUDE | _spf.google.com |
| SPF_INCLUDE | _spf.salesforce.com |
| SPF_INCLUDE | amazonses.com |
| SPF_INCLUDE | aspmx.pardot.com |
| SPF_INCLUDE | mail.zendesk.com |
| SPF_IP | 100.25.59.11 |
| SPF_IP | 148.105.8.0/21 |
| SPF_IP | 198.2.128.0/18 |
| SPF_IP | 205.201.128.0/20 |
| SPF_IP | 52.70.130.33/32 |
| SPF_IP | 52.73.203.75/32 |
Related pages
Pivot deeper into the graph from duolingo.com.
Cypher and MCP
Reproduce the resolution chain directly against graph.whisper.security:
MATCH (h:HOSTNAME {name: "duolingo.com"})-[:RESOLVES_TO]->(ip:IPV4)
-[:ANNOUNCED_BY]->(ap:ANNOUNCED_PREFIX)
-[:ROUTES]->(asn:ASN)-[:HAS_NAME]->(n:ASN_NAME)
RETURN ip.name AS ip, ap.name AS prefix, asn.name AS asn, n.name AS operator
LIMIT 20Or query Whisper from your own LLM workflow via the Whisper MCP server.