Robtex

Up: 77.78.22.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 77.78.23.0/25
Down right: 77.78.23.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
77.78.23.23	PTR	center1-unl-ip23.networx-bg.com
77.78.23.29	A	mail.agron7.bg
77.78.23.108	PTR	center1-unl-ip108.networx-bg.com
77.78.23.108	A	share.jobs
77.78.23.108	A	markovskisolutions.com
77.78.23.109	PTR	center1-unl-ip109.networx-bg.com
77.78.23.112	A+PTR	mail.roussemail.com
77.78.23.112	A	roussemail.com
77.78.23.112	A	office-line.net
77.78.23.170	PTR	center1-unl-ip170.networx-bg.com
77.78.23.198	PTR	center1-unl-ip198.networx-bg.com
77.78.23.198	A	bg.dunavmost.bg
77.78.23.198	A	dunavmost.bg
77.78.23.228	PTR	center1-unl-ip228.networx-bg.com
77.78.23.228	A	mail.rend-it.com
77.78.23.228	A	mail.gsmunlock4.me
77.78.23.234	A+PTR	mail.utroruse.com
77.78.23.234	A	rusenet.eu
77.78.23.234	A	ns2.rusenet.eu
77.78.23.237	PTR	center1-unl-ip237.networx-bg.com