23.211.255.0/24

ip:	23.211.255.0 a23-211-255-0.deploy.static.akamaitechnologies.com
loc:	United States, Mount Prospect (Illinois)  
isp:	AS20940 Akamai International B.V. » Akamai International B.V. » Akamai Technologies, Inc. 363.899 ms
route:	23.211.255.0/24, AKAMAI - Akamai Technologies, Inc., US (Mount Prospect) ... 
reg:	23.192.0.0/11, US, ARIN, 2013-07-12
asn:	AS20940 - AKAMAI-ASN1 Akamai International B.V., NL
addr:	  145 Broadway Cambridge MA 02142 US
online:	  158 » latency: 123 ms (123ms) 

see also:
   23.192.0.0/11    AS20940  AKAMAI Akamai Technologies, Inc., US