Robtex

Up: 213.16.54.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 213.16.55.0/25
Down right: 213.16.55.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
213.16.55.14	PTR	14_55.btc-net.bg
213.16.55.34	A+PTR	go.btc-net.bg
213.16.55.51	PTR	mail.asboiana.com
213.16.55.51	A	mail.dalcia.com
213.16.55.51	A	mail.siemenselveko.bg
213.16.55.52	A	www.asboiana.com
213.16.55.52	A	asboiana.com
213.16.55.53	A	www.asboiana.com
213.16.55.53	A	asboiana.com
213.16.55.53	A	www.siemenselveko.bg
213.16.55.66	PTR	netinfo.bg
213.16.55.67	PTR	my.gbg.bg
213.16.55.69	PTR	gbg.bg
213.16.55.71	PTR	ftp.abv.bg
213.16.55.133	A+PTR	mail.callpoint-group.com
213.16.55.135	PTR	135_55.btc-net.bg
213.16.55.136	PTR	136_55.btc-net.bg
213.16.55.138	PTR	owa.geotechmin.com
213.16.55.146	A+PTR	mail.ellatzite-med.com
213.16.55.147	A+PTR	mail2.ellatzite-med.com
213.16.55.148	PTR	mail2.ellatzite-med.com
213.16.55.148	A	ns1.ellatzite-med.com
213.16.55.151	PTR	151_55.btc-net.bg
213.16.55.151	A	213-16-55-151.ip.btc-net.bg
213.16.55.152	PTR	152_55.btc-net.bg
213.16.55.159	PTR	159_55.btc-net.bg
213.16.55.162	PTR	213-16-55-162.ip.btc-net.bg
213.16.55.167	PTR	167_55.btc-net.bg
213.16.55.188	PTR	188_55.btc-net.bg