Robtex

Up: 170.170.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 170.171.0.0/17
Down right: 170.171.128.0/17
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
170.171.1.4	A+PTR	ny1745-inet-a.randomhouse.com
170.171.1.4	A+PTR	ny1745-inet-b.randomhouse.com
170.171.1.5	A+PTR	calvin-o.randomhouse.com
170.171.1.10	A+PTR	nyvpn1.randomhouse.com
170.171.1.140	A	ny1745-vcsext.randomhouse.com
170.171.2.10	A+PTR	zmailz.com
170.171.8.27	A	myspam.randomhouse.com
170.171.8.29	A	ny1745-vcsext.randomhouse.com
170.171.8.35	A	interchange.randomhouse.com
170.171.8.90	A	mail-ext.glb.prh.com
170.171.11.30	A	ares.randomhouse.com
170.171.11.79	A	frodo.randomhouse.com
170.171.17.4	A	mail.skpny.com
170.171.17.5	A	mail1.skpny.com
170.171.208.12	A	myspam.randomhouse.com
170.171.208.12	A	www.randomhouse.biz
170.171.208.12	A	astronautsguidetoearth.com
170.171.208.109	A	www.star-wars.suvudu.com
170.171.220.49	A	dev.randomhouse.com
170.171.220.49	A	candreotti-prhcom.dev.randomhouse.com
170.171.222.20	A	cart.penguinrandomhouse.com
170.171.241.25	A	cdhqcanada.com
170.171.241.25	A	www.cdhqcanada.com
170.171.241.44	A	yourtvondvd.com
170.171.241.44	A	favoritetvoffer.com
170.171.243.136	A	www.smedigitalapps.com
170.171.243.136	A	smedigitalapps.com
170.171.243.181	A	redb2b.ca
170.171.243.232	A	smecde.com
170.171.248.21	A	mail2.sbment.com
170.171.248.22	A+PTR	mail3.sbment.com
170.171.248.23	A	mail4.sbment.com
170.171.248.24	A+PTR	mail5.sbment.com
170.171.250.18	A	bemusicdev.yourmusic.com
170.171.251.62	A	computerbooksdirect.com
170.171.251.71	A	yourbooks.com
170.171.251.166	A	readerssubscription.com
170.171.252.1	A	kroger-p-dmz.randomhouse.com
170.171.252.2	A	kroger-s-dmz.randomhouse.com
170.171.252.10	A	fodrmail.randomhouse.com
170.171.252.12	A	www.star-wars.suvudu.com
170.171.253.24	PTR	mail3.bmgent.com
170.171.253.26	PTR	mail2.bmgent.com