Hostname
duo.com
Last fetched
duo.com resolves to 16 IPv4 addresses operated by AMAZON-02 - Amazon.com, Inc. in IE. WHOIS lists iana:292 as the registrar.
Nutrition Label
Resolution chain
duo.com resolves to 16 distinct IPv4 addresses via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.
| IP | Prefix | ASN | Operator | Country |
|---|---|---|---|---|
| 18.165.122.111 | 18.165.122.0/23 | AS16509 | AMAZON-02 - Amazon.com, Inc. | IE |
| 18.165.122.55 | 18.165.122.0/23 | AS16509 | AMAZON-02 - Amazon.com, Inc. | IE |
| 18.165.122.56 | 18.165.122.0/23 | AS16509 | AMAZON-02 - Amazon.com, Inc. | IE |
| 18.165.122.78 | 18.165.122.0/23 | AS16509 | AMAZON-02 - Amazon.com, Inc. | IE |
| 3.161.82.27 | 3.161.80.0/22 | AS16509 | AMAZON-02 - Amazon.com, Inc. | DE |
| 3.161.82.4 | 3.161.80.0/22 | AS16509 | AMAZON-02 - Amazon.com, Inc. | DE |
| 3.161.82.78 | 3.161.80.0/22 | AS16509 | AMAZON-02 - Amazon.com, Inc. | DE |
| 3.161.82.84 | 3.161.80.0/22 | AS16509 | AMAZON-02 - Amazon.com, Inc. | DE |
| 65.9.46.22 | 65.9.46.0/24 | AS16509 | AMAZON-02 - Amazon.com, Inc. | SE |
| 65.9.46.56 | 65.9.46.0/24 | AS16509 | AMAZON-02 - Amazon.com, Inc. | SE |
| 65.9.46.73 | 65.9.46.0/24 | AS16509 | AMAZON-02 - Amazon.com, Inc. | SE |
| 65.9.46.81 | 65.9.46.0/24 | AS16509 | AMAZON-02 - Amazon.com, Inc. | SE |
| 18.67.13.59 | 18.67.12.0/23 | AS16509 | AMAZON-02 - Amazon.com, Inc. | DE |
| 18.67.13.97 | 18.67.12.0/23 | AS16509 | AMAZON-02 - Amazon.com, Inc. | DE |
| 18.67.13.125 | 18.67.12.0/23 | AS16509 | AMAZON-02 - Amazon.com, Inc. | DE |
| 18.67.13.48 | 18.67.12.0/23 | AS16509 | AMAZON-02 - Amazon.com, Inc. | DE |
WHOIS identity
- Registrar
- iana:292
- Organization
- cisco technology
- Contact emails
Subdomains
26 observed subdomains of duo.com.
Showing 25 of 26. View all subdomains →
Web-graph footprint
Distinct hostnames that link to or from duo.com in the public web crawl.
4,262 sites link to this hostname.
Sample inbound links
Threat posture
History
Mail and authentication
SPF policy
8 SPF mechanisms authorising senders for duo.com.
| Mechanism | Target |
|---|---|
| SPF_INCLUDE | _spf.google.com |
| SPF_INCLUDE | _spf.intacct.com |
| SPF_INCLUDE | _spf.salesforce.com |
| SPF_INCLUDE | mktomail.com |
| SPF_INCLUDE | servers.mcsv.net |
| SPF_INCLUDE | stspg-customer.com |
| SPF_IP | 66.51.154.240/29 |
| SPF_IP | 72.35.40.113/28 |
Related pages
Pivot deeper into the graph from duo.com.
Cypher and MCP
Reproduce the resolution chain directly against graph.whisper.security:
MATCH (h:HOSTNAME {name: "duo.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.