Robtex

Up: 208.57.216.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 208.57.216.0/23
Down right: 208.57.218.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
208.57.218.11	PTR	208.57.218.11.mpowercom.net
208.57.218.33	A	lax-core01.mpowercom.net
208.57.218.55	A+PTR	lo0.cr1.lsancajw.telepacific.net
208.57.218.55	A	cr1.lsancajw.telepacific.net
208.57.218.59	A+PTR	lo0.mr2.lsancajw.telepacific.net
208.57.218.73	A+PTR	208.57.218.73.mpowercom.net
208.57.218.86	A+PTR	208.57.218.86.mpowercom.net
208.57.218.99	A+PTR	208.57.218.99.mpowercom.net
208.57.218.157	A+PTR	so211.cr1.lsancajw.telepacific.net
208.57.218.232	A+PTR	smtp-out.telepacific.net
208.57.218.232	A+PTR	smtpout.telepacific.net
208.57.218.232	A	smtppool232.telepacific.net
208.57.218.233	A+PTR	smtp-out.telepacific.net
208.57.218.233	A+PTR	smtpout.telepacific.net
208.57.218.234	A+PTR	smtp-out.telepacific.net
208.57.218.234	A+PTR	smtpout.telepacific.net
208.57.218.235	PTR	adns01.la.telepacific.net
208.57.218.235	A	ns1.nxtwb.com
208.57.218.236	PTR	208.57.218.236.mpowercom.net
208.57.218.236	A	smtp.centurype.com
208.57.218.236	A	smtp.dynamic.telepacific.net
208.57.218.237	PTR	mail.arrival.net
208.57.218.239	PTR	mx1la.telepacific.net
208.57.218.239	PTR	mx2la.telepacific.net
208.57.218.241	PTR	smtp-out.telepacific.net
208.57.218.241	PTR	smtpout.telepacific.net
208.57.218.241	A	gohbe.com
208.57.218.252	A	ndt.telepacific.net
208.57.219.43	PTR	lgb-static-208.57.219.43.mpowercom.net
208.57.219.115	PTR	lgb-static-208.57.219.115.mpowercom.net
208.57.219.120	PTR	lgb-static-208.57.219.120.mpowercom.net