Robtex

Up: 66.213.240.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 66.213.248.0/22
Down right: 66.213.252.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.213.248.132	A+PTR	mail.dcgwest.com
66.213.248.132	A	mail.seattleenvelope.com
66.213.248.167	A+PTR	mx2.covestic.com
66.213.248.172	A+PTR	mail.covestic.com
66.213.248.242	PTR	mail.diagnostechs.com
66.213.248.245	A	www.diagnostechs.com
66.213.248.245	A	diagnostechs.com
66.213.248.245	A	*.diagnostechs.com
66.213.248.246	A+PTR	mail.diagnostechs.com
66.213.248.248	A	interplexus.com
66.213.249.19	A	gaitan-law.com
66.213.249.75	PTR	seattle1.byrneskeller.com
66.213.249.122	A+PTR	new.citcwa.com
66.213.249.122	PTR	new.citcwa.org
66.213.249.122	A	mail.citcwa.com
66.213.249.138	A	remote.gyseattle.com
66.213.249.162	PTR	mail.nwhand.com
66.213.249.204	A	mail.windowshowroom.com
66.213.249.210	A+PTR	mail.lihi.org
66.213.250.82	PTR	sasecompany.com
66.213.250.107	A+PTR	mail.invivohealth.com
66.213.250.157	PTR	execserv.lakeshoreclinic.net
66.213.250.157	PTR	lscms01.lakeshoreclinic.net
66.213.251.90	PTR	mail.columbiawest.net
66.213.251.138	PTR	mail.touchnetworks.com
66.213.251.170	A	mail.everguardins.com
66.213.251.194	PTR	mail.new-horizon-school.org
66.213.251.195	PTR	mail.new-horizon-school.org
66.213.251.226	A	remote.gmsarch.com
66.213.251.226	A	mail.gmsarch.com
66.213.252.82	A+PTR	mail2.ci.wilsonville.or.us
66.213.252.82	A	mail2.discoverwilsonville.com
66.213.252.82	A	mail2.ridesmart.com
66.213.252.83	PTR	mail.ci.wilsonville.or.us
66.213.252.83	A	mail.discoverwilsonville.com
66.213.252.243	A	mail.ronsservice.com
66.213.252.243	A	smtp.ronsservice.com
66.213.253.90	PTR	mail.arvial.com
66.213.253.122	A	mailhost.customcraftworks.com
66.213.253.130	A	mail.bedfordbrown.com
66.213.253.154	A	mail.akadirect.com
66.213.253.155	PTR	mail2.oacllc.com
66.213.253.156	A	akadirect.net
66.213.253.218	A	www.cejohnco.com
66.213.253.218	A	cejohnco.com
66.213.253.218	A	mail.cejohnco.com
66.213.253.250	PTR	mail.oeconline.org
66.213.254.50	PTR	aicinsco.com
66.213.254.58	A	mail.colrip.com
66.213.254.114	A+PTR	mail.nwmonline.com
66.213.254.123	A+PTR	mail2.gillespie-graphics.com
66.213.254.172	A+PTR	stashtea.net
66.213.254.172	A	www.stashtea.net
66.213.254.173	A	ns2.stashtea.net
66.213.254.174	A	ns1.stashtea.net
66.213.254.234	A	mail.ccrealtors.com
66.213.254.246	A	www.ducatipilot.com
66.213.254.246	A	ducatipilot.com
66.213.255.146	A+PTR	mail.lamprossteel.com
66.213.255.190	PTR	mail.cayuse.com
66.213.255.226	PTR	mail.dvclaw.com
66.213.255.234	PTR	mail.schulz-clearwater.com