Robtex

Up: 198.212.188.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 198.212.189.0/25
Down right: 198.212.189.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
198.212.189.1	PTR	1.189.212.198.virtela.com
198.212.189.10	PTR	10.189.212.198.virtela.com
198.212.189.16	PTR	16.189.212.198.virtela.com
198.212.189.18	PTR	18.189.212.198.virtela.com
198.212.189.20	PTR	20.189.212.198.virtela.com
198.212.189.24	PTR	24.189.212.198.virtela.com
198.212.189.25	PTR	25.189.212.198.virtela.com
198.212.189.28	PTR	28.189.212.198.virtela.com
198.212.189.35	PTR	35.189.212.198.virtela.com
198.212.189.37	PTR	37.189.212.198.virtela.com
198.212.189.56	PTR	56.189.212.198.virtela.com
198.212.189.63	PTR	63.189.212.198.virtela.com
198.212.189.68	A	frmt-mail02.meas-spec.com
198.212.189.105	A+PTR	ham-mail.meas-spec.com
198.212.189.109	A	ham-mail10.meas-spec.com
198.212.189.111	PTR	111.189.212.198.virtela.com
198.212.189.138	PTR	138.189.212.198.virtela.com
198.212.189.146	PTR	146.189.212.198.virtela.com
198.212.189.168	PTR	168.189.212.198.virtela.com
198.212.189.168	A	mail2.betatherm.com
198.212.189.168	A	betatherm.com
198.212.189.169	A+PTR	vie-mx.meas-spec.com
198.212.189.172	A+PTR	vie-mail.meas-spec.com
198.212.189.174	PTR	camus.meas-spec.com
198.212.189.174	A	mail.camus.org