Akamai’s DNS “black magic”
Root DNS Server
Akamai High-Level
DNS Server
Top-Level Domain
DNS Server
www.pcworld.com
www.pcworld.com
a1694.g.akamai.net
CNAME:
images.pcworld.com
www.pcworld.com
a1694.g.akamai.net
Akamai Low-Level
PCWorld Authoritative
DNS Server
a1694.g.akamai.net DNS Server
2 ip addresses of
Local DNS Server Akamai Edge Servers
images.pcworld.com
PCWorld
Web Server
Valeria Cardellini - SDCC 2012/13
2 ip addresses of
www.pcworld.com
Akamai Edge Servers
Akamai
Edge Server
Web
Client
Source: “Drafting Behind Akamai (Travelocity-Based Detouring)”
From 2009 PCWorld
does not use Akamai but a different CDN
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