Robtex

Up: 209.197.12.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 209.197.13.0/25
Down right: 209.197.13.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
209.197.13.50	A+PTR	ransomtech.com
209.197.13.50	A	rnsmtk.com
209.197.13.50	A	ransomsupport.com
209.197.13.51	A	tardis.iad.ransomtech.com
209.197.13.52	A+PTR	mojo.iad.ransomtech.com
209.197.13.52	A	varesist.org
209.197.13.52	A	bblboy.com
209.197.13.54	A+PTR	larry.iad.ransomtech.com
209.197.13.54	A	mail.joellen.us
209.197.13.54	A	mail.ransomnet.org
209.197.13.57	A	helpdesk.ransomtech.com
209.197.13.60	A+PTR	a60.iad.ransomtech.com
209.197.13.60	A	marten.iad.ransomtech.com