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community.duo.com
Cisco · tier critical (support / help) · 0.3% of the company's traffic weight · scan of 2026-10-17
AWS Route 53DNS (zone duo.com)
CloudflareEdge
Cloudflare (AS13335)104.21.64.0/20
DNS records
| Status | live |
|---|---|
| CNAME chain | kxiwq67737.lithium.com → kxiwq67737.lithium.com.cdn.cloudflare.net |
| A | 104.21.74.91 172.67.201.16 |
| AAAA | — |
| Zone | duo.com |
| Zone NS | ns-1365.awsdns-42.org ns-1733.awsdns-24.co.uk ns-55.awsdns-06.com ns-932.awsdns-52.net |
| Origin ASN | AS13335 Cloudflare (AS13335) |
| BGP prefix | 104.21.64.0/20 |
HTTP
| GET / status | 403 |
|---|---|
| /cdn-cgi/trace | cloudflare (colo SEA) |
| cf-ray | a4c0320a580b065f-SEA |
| server | cloudflare |
| server-timing | chlray;desc="a4c0320a580b065f" |
| set-cookie(names) | __cf_bm |
Why we classified it this way
DNS
- AWS Route 53 AWS Route 53 · NS ns-1365.awsdns-42.org, ns-1733.awsdns-24.co.uk, ns-55.awsdns-06.com, ns-932.awsdns-52.net (confidence 95%)
Edge
- Cloudflare Cloudflare CDN · CNAME kxiwq67737.lithium.com.cdn.cloudflare.net; A 104.21.74.91 in published cloudflare ranges; A 104.21.74.91 in 104.21.64.0/20 originated by AS13335; /cdn-cgi/trace valid (colo=SEA) (confidence 99%)
Behind the edge / sub-signals
- Cloudflare Cloudflare Bot Management · cookie __cf_bm (confidence 90%)
History
| Scan | Status | DNS | Edge | CNAME / A | ASN |
|---|---|---|---|---|---|
| 2026-10-17 | live | AWS Route 53 | Cloudflare | kxiwq67737.lithium.com > kxiwq67737.lithium.com.cdn.cloudflare.net | AS13335 |
| 2026-10-17 | live | AWS Route 53 | Cloudflare | kxiwq67737.lithium.com > kxiwq67737.lithium.com.cdn.cloudflare.net | AS13335 |