Robtex

Up: 216.127.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 216.127.44.0/23
Down right: 216.127.46.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.127.44.4	PTR	fincher.users.accretive-networks.net
216.127.44.4	A	www.accretivetg.net
216.127.44.4	A	fincher.users.flyingcroc.net
216.127.44.5	PTR
216.127.44.13	PTR
216.127.44.13	A	rwhois.accretive-networks.net
216.127.44.13	A	rwhois3.accretive-networks.net
216.127.44.14	PTR	rwhois4.accretive-networks.net
216.127.44.14	A	rwhois.accretive-networks.net
216.127.44.25	A+PTR	voip2.internal.sea.flyingcroc.net
216.127.44.30	A+PTR	neteng1.internal.sea.flyingcroc.net
216.127.44.30	A	syslog.accretive-networks.net
216.127.44.48	A+PTR	secure.flyingcroc.net
216.127.44.49	A	realsecure.flyingcroc.net
216.127.44.50	A	securepost.flyingcroc.net
216.127.44.51	A	admin.mtree.com
216.127.44.52	A+PTR	admin2.mtree.com
216.127.44.54	A	admin.sextracker.com
216.127.44.69	A+PTR	swan.fciis.net
216.127.44.71	PTR	mon4.internal.sea.flyingcroc.net
216.127.44.73	A+PTR	stat2.internal.sea.flyingcroc.net
216.127.44.74	A+PTR	pholus.fciis.net
216.127.44.74	A	stat3.internal.sea.flyingcroc.net
216.127.44.74	A	billing1.hosting.flyingcroc.net
216.127.44.76	A	hwcheck.utils.flyingcroc.net
216.127.44.78	PTR	minotaur.fciis.net
216.127.45.63	A	*.faxdeliveryservice.com
216.127.45.63	A	mail.faxdeliveryservice.com
216.127.45.241	A	oldmail.24x7services.net
216.127.46.132	A+PTR	termite.fciis.net
216.127.46.149	PTR
216.127.46.149	A	ns1.flyingcroc.net
216.127.46.150	PTR
216.127.46.150	A	ns1.accretivetg.net
216.127.46.151	A+PTR	ns1.wolfe.net
216.127.46.164	A	takeoff1.hosting.accretive-networks.net
216.127.47.4	A+PTR	employee1.hosting.flyingcroc.net
216.127.47.5	PTR	employee2.hosting.flyingcroc.net
216.127.47.5	A	bodenraccks.com
216.127.47.5	A	genericaaron.com
216.127.47.196	A+PTR	ppost6.hosting.flyingcroc.net
216.127.47.201	A	phonemashup.com