Robtex

Up: 209.227.128.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 209.227.160.0/20
Down right: 209.227.176.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
209.227.164.1	PTR	ns1.primusvoip.com
209.227.164.12	PTR	ns2.primusvoip.com
209.227.164.12	A	ns3.primusvoip.com
209.227.165.143	PTR	delirium.voip.primustel.com
209.227.165.143	A	delirium.primusvoip.com
209.227.165.143	A	delirium.telegroup.com
209.227.165.145	PTR	desire.voip.primustel.com
209.227.165.145	A	smtp.primusvoip.com
209.227.165.145	A	desire.primusvoip.com
209.227.166.2	PTR	bos-corp-2.primushost.com
209.227.166.64	PTR	bos-corp-64.primushost.com
209.227.166.142	A+PTR	webdrive.primustel.com
209.227.166.150	A	brix.primustel.com
209.227.166.152	A	mclwldev01.primustel.com
209.227.166.154	A	imap.primustel.com
209.227.167.6	A	portal.primustel.com
209.227.167.12	A	primusxtension.com
209.227.167.12	A	primusbiz.com
209.227.167.12	A	www.primusbiz.com
209.227.167.75	PTR	brix.primustel.com
209.227.167.131	A	primuslink.net
209.227.167.131	A	primuslink.us
209.227.167.131	A	primuslink.com
209.227.167.150	A	primusvoip.org
209.227.167.170	PTR	lingo.com
209.227.167.170	A	buylingo.net
209.227.167.170	A	testlingo.net
209.227.167.192	A	primusprofessionalservices.com
209.227.167.192	A	primustel-services.com
209.227.167.193	A	lingocallkorea.com
209.227.167.193	A	lingokorea.com
209.227.167.199	PTR	www.smarttalkmobile.com
209.227.167.240	A	lingoandroidapp.com
209.227.167.240	A	lingobbapp.com
209.227.167.240	A	lingomobileandroidapp.com
209.227.169.21	A	outpost.primustel.com
209.227.170.1	PTR	test.test.com
209.227.170.3	A	pstngw2.b2tecs.com
209.227.170.6	A	pstngw1.b2tecs.com
209.227.170.12	A	pbx.b2tecs.com
209.227.170.82	A	ns1.b2tecs.com
209.227.170.85	A+PTR	mail.b2tecs.com
209.227.170.85	PTR	mail.broadsolv.com
209.227.170.85	PTR	mail.indtai.com
209.227.170.87	A	seneca-environmental.com
209.227.178.194	PTR	adaptivenetworks.com
209.227.179.35	PTR	mail.fhlbboston.com
209.227.179.39	PTR	www.fhlbboston.com
209.227.180.1	PTR	test.test.com
209.227.181.197	A+PTR	mail.jmann.com
209.227.182.20	PTR	thebeaconllc.com
209.227.185.15	PTR	srv1.nert.com
209.227.185.100	A	sekscontact6462.stoute2onenightstand.info
209.227.185.100	A	zuqiubisaizhongxueshengzuowen.yangji9.com
209.227.185.100	A	mail.tridentsys.com
209.227.185.172	A	fw.nert.com
209.227.186.1	PTR	test.test.com
209.227.188.131	PTR	f4-0.cr2-jbr.primustel.com
209.227.188.254	A+PTR	corp-gw.primustel.com
209.227.189.2	PTR	test.dsdial.net
209.227.189.211	A+PTR	mail.primustel.com
209.227.189.216	A+PTR	webmail.ptgi.com
209.227.189.236	A	survey.primustel.com
209.227.189.241	A	mclwlprod01.primustel.com
209.227.189.242	A	mclwlprod02.primustel.com
209.227.189.243	A	mclwlqa01.primustel.com