23.57.8.0/24

ip:	23.57.8.0 a23-57-8-0.deploy.static.akamaitechnologies.com
loc:	United States, Chicago (Illinois)  
isp:	AS20940 Akamai International B.V. » Akamai International B.V. » Akamai Technologies 344.723 ms
route:	23.57.8.0/24, AKAMAI - Akamai Technologies, Inc., US (Chicago) ... 
reg:	23.32.0.0/11, US, ARIN, 2011-05-16
asn:	AS20940 - AKAMAI-ASN1 Akamai International B.V., NL
addr:	  145 Broadway Cambridge MA 2142 US
online:	  109 » latency: 123 ms (123ms) 

see also:
   23.32.0.0/11     AS20940  AKAMAI Akamai Technologies, Inc., US