Robtex

Up: 209.197.192.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 209.197.196.0/23
Down right: 209.197.198.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
209.197.196.1	A+PTR	wwwprodv-sj.webex.com
209.197.196.1	A	www.jabber.net
209.197.196.1	A	www.jabbernow.com
209.197.196.11	A+PTR	dmbuyonline.webex.com
209.197.196.12	A	global-soaservices.webex.com
209.197.196.13	A+PTR	origin-support.webex.com
209.197.196.22	A+PTR	wbximg.com
209.197.196.22	A	www4.webex.com
209.197.196.25	A+PTR	wwwintlvm-sj.webex.com
209.197.196.25	PTR	webex.com.fr
209.197.196.25	A	accessanywhere.com
209.197.196.31	A+PTR	ioms.webex.com
209.197.196.32	A	global-dmiservices.webex.com
209.197.196.75	A+PTR	university.webex.com
209.197.196.75	A	registeronline.webex.com
209.197.196.76	A+PTR	webexmip.webex.com
209.197.196.225	A+PTR	mytrialin.webex.com
209.197.198.16	A+PTR	dfw02-wxp00-lbsw01-vl909.webex.com
209.197.198.17	A+PTR	dfw02-wxp00-lbsw02-vl909.webex.com
209.197.198.20	A+PTR	dfw02-wxp00-lbsw01-vl3809.webex.com
209.197.198.21	A+PTR	dfw02-wxp00-lbsw02-vl3809.webex.com
209.197.198.22	A+PTR	dfw02-wxp00-lbsw01-vl3909.webex.com
209.197.198.23	A+PTR	dfw02-wxp00-lbsw02-vl3909.webex.com
209.197.198.26	A	dfw02-wxp00-lbsw01-vl809.webex.com
209.197.198.27	A+PTR	dfw02-wxp00-lbsw02-vl809.webex.com
209.197.198.35	A+PTR	dfw02-wxp00-lbsw01-vl103.webex.com
209.197.198.36	A+PTR	dfw02-wxp00-lbsw02-vl103.webex.com
209.197.198.67	A+PTR	dfw02-wxp00-lbsw01-vl903.webex.com
209.197.198.68	A+PTR	dfw02-wxp00-lbsw02-vl903.webex.com
209.197.198.100	A+PTR	dfw02-wxp00-lbsw02-vl3803.webex.com
209.197.198.115	A+PTR	dfw02-wxp00-lbsw01-vl3903.webex.com
209.197.198.116	A+PTR	dfw02-wxp00-lbsw02-vl3903.webex.com
209.197.198.131	A+PTR	dfw02-wxp00-lbsw01-vl803.webex.com
209.197.198.132	A	dfw02-wxp00-lbsw02-vl803.webex.com
209.197.199.11	A+PTR	wbxsjsbc100-sip.webex.com
209.197.199.12	A	wbxsjsbc002-sip.webex.com
209.197.199.15	A+PTR	tsj5sbc005.webex.com
209.197.199.121	A+PTR	sjc02-wxvc-srt02-ge1-4.webex.com