Robtex

Up: 5.104.172.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 5.104.172.0/25
Down right: 5.104.172.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
5.104.172.1	PTR	gw.websys.bg
5.104.172.200	A+PTR	cyrillicregistry.com
5.104.172.201	A+PTR	nic.xn--80asehdb
5.104.172.202	PTR	woof55.viewmermaid.com
5.104.172.202	A	nic.xn--80aswg
5.104.172.203	A+PTR	nic.mango
5.104.172.204	PTR	nic.gal
5.104.172.204	A	teniskinaedro.bg
5.104.172.204	A	mail.teniskinaedro.com
5.104.172.205	PTR	nic.eus
5.104.172.206	PTR	nic.scot
5.104.172.206	A	sofiabears.bg
5.104.172.206	A	bojuriste.com
5.104.172.208	PTR	coreregistry.net
5.104.172.209	PTR	cyrillictld.com
5.104.172.209	A	mail.cyrillicregistry.com
5.104.172.210	PTR	domrs.net
5.104.172.212	A	ibtrainings.net
5.104.172.216	A	ethnotolerance.org
5.104.172.217	A	olian-shop.com
5.104.172.218	PTR	undeceive68.feedmoustache.com
5.104.172.218	A	voltel.bg
5.104.172.222	A	iberin.com
5.104.172.225	A	lactoscan.com
5.104.172.226	A	giengineering.bg
5.104.172.233	A	k-kres.com
5.104.172.234	A	loelectric-ltd.com
5.104.172.234	A	modar2002.com
5.104.172.234	A	pgsag-plovdiv.com
5.104.172.235	A	seitai.ru
5.104.172.239	PTR	woo15.feedmoustache.com
5.104.172.239	A	espot.bg
5.104.172.240	A+PTR	dotbazaar.net
5.104.172.240	A	xn--mgbgn.xn--mgbab2bd
5.104.172.240	A	www.nic.xn--mgbab2bd
5.104.172.241	PTR	reverse-5-104-172-241.icnhost.net
5.104.172.241	A	nic.scot
5.104.172.242	PTR	crag8.feedmoustache.com
5.104.172.242	A	avamb-logiciel.com
5.104.172.244	PTR	picnic21.feedmoustache.com
5.104.172.244	A	plantskey.com
5.104.172.244	A	zdravka.net
5.104.172.247	A	sami-spares.com
5.104.172.248	A	americanspinalclinic.com
5.104.172.248	A	nudex.tv
5.104.172.250	PTR	corehub.net