Robtex

Up: 199.89.0.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 199.89.1.0/25
Down right: 199.89.1.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
199.89.1.4	A+PTR	001.lax.mailroute.net
199.89.1.4	A	mr001.lax02.mailroute.net
199.89.1.4	A	ns11.mailroute.net
199.89.1.5	A+PTR	002.lax.mailroute.net
199.89.1.5	A	ns12.terramar.net
199.89.1.5	A	ns12.mailroute.info
199.89.1.6	A+PTR	003.lax.mailroute.net
199.89.1.6	A	ns13.terramar.net
199.89.1.6	A	ns13.mailroute.info
199.89.1.7	A+PTR	mr004.lax02.mailroute.net
199.89.1.7	A	004.lax.mailroute.net
199.89.1.8	A+PTR	005.lax.mailroute.net
199.89.1.8	A	mr005.lax02.mailroute.net
199.89.1.10	A+PTR	007.lax.mailroute.net
199.89.1.13	A	010.lax.mailroute.net
199.89.1.14	A	011.lax.mailroute.net
199.89.1.15	A	012.lax.mailroute.net
199.89.1.16	A	013.lax.mailroute.net
199.89.1.17	A+PTR	014.lax.mailroute.net
199.89.1.120	A+PTR	mail.lax.mailroute.net
199.89.1.120	A	mx.riverlandresort.net
199.89.1.120	A	mr117.lax02.mailroute.net
199.89.1.122	A+PTR	mr119.lax02.mailroute.net
199.89.1.122	A	outbound.mailroute.net
199.89.1.128	A	webmail.mailroute.net
199.89.1.225	PTR	fiji.islandtechnologies.net
199.89.1.225	A	pop.islandemail.com
199.89.1.225	A	smtp.islandemail.com