Robtex

Up: 206.72.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 206.73.0.0/17
Down right: 206.73.128.0/17
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
206.73.6.64	PTR	ns11071.ztomy.com
206.73.8.39	PTR	laxvnom01.infonet.com
206.73.8.39	A	mail.ismtp027.com
206.73.14.81	A	egohs81.us.info.net
206.73.16.235	A	mail2.impss.com
206.73.16.235	A	ns2.wmcnoc.com
206.73.16.235	A	ns2.impss.com
206.73.53.33	A	mail.infinitytest.com
206.73.53.34	A	galleries.smartnail.net
206.73.57.85	PTR	ns11071.ztomy.com
206.73.59.164	PTR	inete164.us.info.net
206.73.72.175	A	gole175.info.net
206.73.97.137	A	amamembers.org
206.73.104.15	PTR	aoigaes15.us.infonet.com
206.73.104.36	PTR	ns4.meridian-mag.com
206.73.112.11	A	kgogs11.us.infonet.com
206.73.112.109	A	kgogs109.us.infonet.com
206.73.112.114	A	kgogs114.us.infonet.com
206.73.112.115	A	kgogs115.us.infonet.com
206.73.189.208	PTR	sfsfsdf208.btinfonet.com
206.73.203.2	PTR	glsig2.us.infonet.com
206.73.203.4	PTR	glsig4.us.infonet.com
206.73.238.202	A	xmail.cifor.org
206.73.238.202	A	gmgdi202.us.infonet.com
206.73.238.230	A	pnrb.aci.co.id
206.73.238.230	A	gmgdi230.us.infonet.com
206.73.239.232	A	asgxlg232.us.infonet.com