Robtex

Up: 173.199.4.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
173.199.6.10	PTR	storage.citrixonline.com
173.199.6.11	PTR	athena.citrixonline.com
173.199.6.12	A	l1.osdimg.com
173.199.6.13	A	builds.citrixonlinecdn.com
173.199.6.21	PTR	blog.citrixonline.com
173.199.6.21	PTR	docs.citrixonline.com
173.199.6.21	A+PTR	news.citrixonline.com
173.199.6.24	A	poll.shareconnect.com
173.199.6.26	A	worxdesktop.com