Robtex

Up: 173.0.160.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 173.0.160.0/23
Down right: 173.0.162.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
173.0.160.3	A	ns1.megasys.net
173.0.160.10	PTR	usa-173-0-160-10.sohonet.com
173.0.160.10	A	purebiologic.com
173.0.160.10	A	idatamd.net
173.0.160.12	PTR	tricity-idatamd-ds-ir.dynamic.net
173.0.160.12	A	tpspine.com
173.0.160.19	PTR	usa-173-0-160-19.sohonet.com
173.0.160.19	A	kbwr.com
173.0.160.19	A	kbwrinc.com
173.0.160.20	PTR	kerio.kbwtr.com
173.0.160.21	PTR	usa-173-0-160-21.sohonet.com
173.0.160.21	A	mail.kbwtr.com
173.0.160.21	A	mail.pacificfutures.org
173.0.160.25	PTR	usa-173-0-160-25.sohonet.com
173.0.160.35	PTR	usa-173-0-160-35.sohonet.com
173.0.160.35	A	powerbudget.com
173.0.160.35	A	districtwarehouse.com
173.0.160.81	PTR	usa-173-0-160-81.sohonet.com
173.0.160.89	PTR	usa-173-0-160-89.sohonet.com
173.0.160.90	PTR	usa-173-0-160-90.sohonet.com
173.0.160.91	PTR	usa-173-0-160-91.sohonet.com
173.0.161.2	PTR	bluerail.org
173.0.161.2	A	mail.bluerail.org
173.0.161.2	A	mail.bluerail.net
173.0.161.4	PTR	bluerail.net
173.0.161.4	A	mail.guystuffusa.com
173.0.161.4	A	mail.histinv.com
173.0.161.5	PTR	bluerail.net
173.0.161.6	PTR	roguewire.com
173.0.161.7	PTR	smtp-outbound-02.point360.com
173.0.161.8	A	mail.ww2-collectibles.com
173.0.161.8	A	ww2-collectibles.com
173.0.161.9	A	ww2-auctions.com
173.0.161.9	A	ww2militariaauctions.com
173.0.161.11	PTR	ww2-collectibles.com
173.0.161.12	A	mail.nsdapuniforms.com
173.0.161.12	A	www.nsdapuniforms.com
173.0.161.12	A	nsdapuniforms.com
173.0.161.18	PTR	www.point360.com
173.0.161.18	A	point360.com
173.0.161.34	PTR	www.primera.com
173.0.161.34	A	primerainkrefills.com
173.0.161.34	A	primeradisc.com
173.0.161.35	PTR	www.primeraeurope.com
173.0.161.36	PTR	usa-173-0-161-36.sohonet.com
173.0.161.38	A	primeralabel.com
173.0.161.38	A	www.primeralabel.com
173.0.161.40	A	greatamericantraincompany.com
173.0.162.2	A	cab1-apc2-ir.dynamic.net
173.0.162.3	A	cab1-apc1-ir.dynamic.net
173.0.162.5	A	cab2-apc1-ir.dynamic.net
173.0.162.6	A	cab2-apc2-ir.dynamic.net
173.0.162.7	A	cab2-apc3-ir.dynamic.net
173.0.163.3	A	backupmail.dynamic.com