Robtex

Up: 216.135.136.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 216.135.136.0/23
Down right: 216.135.138.0/23

IP	Type	Hostname
216.135.136.24	PTR	wan-vc8f20o.bos.biz.mindspring.com
216.135.136.87	A	wan-vc8f22n.bos.biz.mindspring.com
216.135.136.207	A	wan-vc8f26f.bos.biz.mindspring.com
216.135.137.160	A+PTR	user-vc8f2d0.biz.mindspring.com
216.135.137.164	A+PTR	user-vc8f2d4.biz.mindspring.com
216.135.137.187	A+PTR	user-vc8f2dr.biz.mindspring.com
216.135.138.3	A	user-vc8f2g3.biz.mindspring.com
216.135.138.12	A	user-vc8f2gc.biz.mindspring.com
216.135.138.17	A+PTR	user-vc8f2gh.biz.mindspring.com
216.135.138.30	A	user-vc8f2gu.biz.mindspring.com
216.135.138.32	A	user-vc8f2h0.biz.mindspring.com
216.135.138.34	A	user-vc8f2h2.biz.mindspring.com
216.135.138.40	A	user-vc8f2h8.biz.mindspring.com
216.135.138.51	A	user-vc8f2hj.biz.mindspring.com
216.135.138.60	A	user-vc8f2hs.biz.mindspring.com
216.135.138.62	A	user-vc8f2hu.biz.mindspring.com
216.135.138.72	A	user-vc8f2i8.biz.mindspring.com
216.135.138.73	A	user-vc8f2i9.biz.mindspring.com
216.135.138.74	A	user-vc8f2ia.biz.mindspring.com
216.135.138.81	A	user-vc8f2ih.biz.mindspring.com
216.135.138.97	PTR	user-vc8f2j1.biz.mindspring.com
216.135.138.99	A	user-vc8f2j3.biz.mindspring.com
216.135.138.110	A	user-vc8f2je.biz.mindspring.com
216.135.138.111	A	user-vc8f2jf.biz.mindspring.com
216.135.138.113	A	user-vc8f2jh.biz.mindspring.com
216.135.138.119	A	user-vc8f2jn.biz.mindspring.com
216.135.138.122	A	user-vc8f2jq.biz.mindspring.com
216.135.138.127	A	user-vc8f2jv.biz.mindspring.com
216.135.138.146	A	user-vc8f2ki.biz.mindspring.com
216.135.138.147	A	user-vc8f2kj.biz.mindspring.com
216.135.138.153	A	user-vc8f2kp.biz.mindspring.com
216.135.138.160	A	user-vc8f2l0.biz.mindspring.com
216.135.138.162	A	user-vc8f2l2.biz.mindspring.com
216.135.138.164	A	user-vc8f2l4.biz.mindspring.com
216.135.138.168	A	user-vc8f2l8.biz.mindspring.com
216.135.138.175	A	user-vc8f2lf.biz.mindspring.com
216.135.138.190	A	user-vc8f2lu.biz.mindspring.com
216.135.138.193	A	user-vc8f2m1.biz.mindspring.com
216.135.138.201	A	user-vc8f2m9.biz.mindspring.com
216.135.138.203	A	user-vc8f2mb.biz.mindspring.com
216.135.138.204	A	user-vc8f2mc.biz.mindspring.com
216.135.138.205	A	user-vc8f2md.biz.mindspring.com
216.135.138.207	A	user-vc8f2mf.biz.mindspring.com
216.135.138.212	A	user-vc8f2mk.biz.mindspring.com
216.135.138.216	A	user-vc8f2mo.biz.mindspring.com
216.135.138.221	A	user-vc8f2mt.biz.mindspring.com
216.135.138.225	A	user-vc8f2n1.biz.mindspring.com
216.135.138.230	A	user-vc8f2n6.biz.mindspring.com
216.135.138.231	A+PTR	user-vc8f2n7.biz.mindspring.com
216.135.138.232	PTR	user-vc8f2n8.biz.mindspring.com
216.135.138.233	A	user-vc8f2n9.biz.mindspring.com
216.135.138.238	A	user-vc8f2ne.biz.mindspring.com
216.135.138.247	A	user-vc8f2nn.biz.mindspring.com
216.135.138.253	A	user-vc8f2nt.biz.mindspring.com
216.135.138.254	A	user-vc8f2nu.biz.mindspring.com
216.135.139.49	PTR	mail.specmaterials.com
216.135.139.124	A+PTR	user-vc8f2rs.biz.mindspring.com
216.135.139.137	A+PTR	user-vc8f2s9.biz.mindspring.com