199.167.52.0/22

ip:	199.167.52.0 
loc:	United States, San Jose (California)  
isp:	AS54538 PALO ALTO NETWORKS » Palo Alto Networks » Palo Alto Networks 491.52 ms
route:	199.167.52.0/22, PALOA - PALO ALTO NETWORKS, US (Santa Clara) ... 
reg:	199.167.52.0/22, US, ARIN, 2012-03-23
addr:	  3000 Tannery way Santa Clara CA 95054 US
online:	  21 » latency: 157 ms (154ms) 

see also:
   199.167.52.0/24  AS54538  PAN PALO ALTO NETWORKS, US
   199.167.53.0/24  AS54538  PAN PALO ALTO NETWORKS, US
   199.167.54.0/24  AS396421  PAN PALO ALTO NETWORKS, US