Robtex

Up: 199.249.20.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 199.249.22.0/24
Down right: 199.249.23.0/24

IP	Type	Hostname
199.249.22.65	PTR	e-meetings-vip.vzbi.com
199.249.22.113	A	ndcsrv197.vzbi.com
199.249.22.135	A+PTR	nm04.verizonbusiness.com
199.249.22.138	A	nmvip01.verizonbusiness.com
199.249.22.147	A+PTR	nmvip04.verizonbusiness.com
199.249.22.151	A	nmndcvip04.vzbi.com
199.249.22.225	A+PTR	web2-new.vbns.net
199.249.23.4	A	ndcws04.vzbi.com
199.249.23.6	A	ndcws06.vzbi.com
199.249.23.7	A+PTR	ndcwcws07.vzbi.com
199.249.23.7	A	webcenter2.verizonbusiness.com
199.249.23.7	A	webcenter2.gslb.verizonbusiness.com
199.249.23.9	A+PTR	webcenter8-ndc.vzbi.com
199.249.23.9	A	webcenter8.verizonbusiness.com
199.249.23.11	A+PTR	ndcwcmail01.vzbi.com
199.249.23.11	A	webcenter2.verizonbusiness.com
199.249.23.11	A	webcenter2.gslb.verizonbusiness.com
199.249.23.18	PTR	ndcwcws08.vzbi.com
199.249.23.18	A	webcenter2.verizonbusiness.com
199.249.23.19	PTR	ndcwcws09.vzbi.com
199.249.23.19	A	webcenter2.verizonbusiness.com
199.249.23.116	A+PTR	ndcfs01.vzbi.com
199.249.23.116	A	askwebcenter.com
199.249.23.129	A+PTR	norvrp01.mci.com
199.249.23.130	PTR	norvrp02.mci.com
199.249.23.131	PTR	norvrp04.mci.com
199.249.23.134	PTR	norvrp03.mci.com
199.249.23.135	A	norvrp07.mci.com
199.249.23.136	A	messagecenter.mci.com