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duosecurity.com

Cisco · tier critical (marketing / brand) · 0.3% of the company's traffic weight · scan of 2026-10-17

AWS Route 53DNS (zone duosecurity.com)
AWSCDN & security
AWS (AS16509)52.85.129.0/24

DNS records

Statuslive
CNAME chain—
A52.85.129.91 52.85.129.10 52.85.129.98 52.85.129.6
AAAA—
Zoneduosecurity.com
Zone NSns-1271.awsdns-30.org ns-1600.awsdns-08.co.uk ns-272.awsdns-34.com ns-896.awsdns-48.net
Origin ASNAS16509 AWS (AS16509)
BGP prefix52.85.129.0/24

HTTP

GET / status301
/cdn-cgi/tracenot probed
cf-raya4c031f7a951065f-SEA
locationhttps://duo.com/
servercloudflare
via1.1 e82f2bd1d85893fad1abb144337e7368.cloudfront.net (CloudFront)
x-amz-cf-idVcHeJ7pC0GxIkKDKMua9KhNdvGNc7pWUV5Obd9NBU8X-DMtszv9wUQ==
x-amz-cf-popSEA900-P10
x-cacheHit from cloudfront

Why we classified it this way

DNS

  • AWS Route 53 AWS Route 53 · NS ns-1271.awsdns-30.org, ns-1600.awsdns-08.co.uk, ns-272.awsdns-34.com, ns-896.awsdns-48.net (confidence 95%)

CDN & security

  • AWS AWS CloudFront (IP range) · A 52.85.129.91 in published aws_cloudfront ranges; x-amz-cf-* / via CloudFront (confidence 93%)

History

ScanStatusDNSCDN & securityCNAME / AASN
2026-10-17liveAWS Route 53AWS52.85.129.91 52.85.129.10 52.85.129.98 52.85.129.6AS16509
2026-10-17liveAWS Route 53AWS52.85.129.10 52.85.129.91 52.85.129.6 52.85.129.98AS16509