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dl.duosecurity.com

Cisco · tier critical (downloads / static) · 0.4% of the company's traffic weight · scan of 2026-10-17

AWS Route 53DNS (zone duosecurity.com)
AWSEdge
AWS (AS16509)108.138.92.0/22

DNS records

Statuslive
CNAME chain—
A108.138.94.77 108.138.94.123 108.138.94.82 108.138.94.8
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 prefix108.138.92.0/22

HTTP

GET / status301
/cdn-cgi/tracenot probed
cf-raya4c0320b48de065f-SEA
locationhttps://duo.com/
servercloudflare
via1.1 93b50b5ce635a36621d7bd38d3b0d6da.cloudfront.net (CloudFront), 1.1 e77661e211afe9242e85e573f12d5534.cloudfront.net (CloudFront)
x-amz-cf-idDWs4fIlyxsX5qaxWac7o9T7hTR3PsHYKNiV_v71TlgwKu8tFP1Qirw==
x-amz-cf-popHIO52-P4, SEA73-P2
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%)

Edge

  • AWS AWS CloudFront (IP range) · A 108.138.94.77 in published aws_cloudfront ranges; x-amz-cf-* / via CloudFront (confidence 93%)

History

ScanStatusDNSEdgeCNAME / AASN
2026-10-17liveAWS Route 53AWS108.138.94.77 108.138.94.123 108.138.94.82 108.138.94.8AS16509
2026-10-17liveAWS Route 53AWS108.138.94.123 108.138.94.77 108.138.94.8 108.138.94.82AS16509