Robtex

Up: 192.53.104.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 192.53.104.0/25
Down right: 192.53.104.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.53.104.1	PTR	mail.astro.ch
192.53.104.1	PTR	as73.astrodienst.ch
192.53.104.1	A	as73.astro.ch
192.53.104.2	A+PTR	as80.astro.ch
192.53.104.2	A+PTR	mail.astro.ch
192.53.104.3	A+PTR	as81.astro.ch
192.53.104.4	A+PTR	wwu.astro.ch
192.53.104.4	A+PTR	wwu.astro.com
192.53.104.10	A+PTR	imac.astro.ch
192.53.104.11	A+PTR	mac1.astro.ch
192.53.104.12	A+PTR	macq.astro.ch
192.53.104.15	A+PTR	as21.astro.ch
192.53.104.15	PTR	astro21.astro.ch
192.53.104.21	PTR	nba.astro.ch
192.53.104.22	PTR	nbk.astro.ch
192.53.104.23	PTR	nbe.astro.ch
192.53.104.28	PTR	as46.astro.ch
192.53.104.29	PTR	xp1.astro.ch
192.53.104.40	A+PTR	ms0.astro.ch
192.53.104.41	A+PTR	mc1.astro.ch
192.53.104.42	A+PTR	mc2.astro.ch
192.53.104.43	A+PTR	mc3.astro.ch
192.53.104.44	A+PTR	mc4.astro.ch
192.53.104.45	A+PTR	mc5.astro.ch
192.53.104.46	A+PTR	mc6.astro.ch
192.53.104.47	A+PTR	mc7.astro.ch
192.53.104.48	A+PTR	mc8.astro.ch
192.53.104.49	A+PTR	mc9.astro.ch
192.53.104.50	A+PTR	mc10.astro.ch
192.53.104.51	A+PTR	mc11.astro.ch
192.53.104.52	A+PTR	mc12.astro.ch
192.53.104.53	A+PTR	mc13.astro.ch
192.53.104.54	A+PTR	mc14.astro.ch
192.53.104.55	A+PTR	mc15.astro.ch
192.53.104.56	PTR	atmac.astro.ch
192.53.104.70	A+PTR	it0.astro.ch
192.53.104.71	A+PTR	it1.astro.ch
192.53.104.72	A+PTR	it2.astro.ch
192.53.104.73	A+PTR	it3.astro.ch
192.53.104.74	A+PTR	it4.astro.ch
192.53.104.75	A+PTR	it5.astro.ch
192.53.104.76	A+PTR	it6.astro.ch
192.53.104.77	A+PTR	it7.astro.ch
192.53.104.78	A+PTR	it8.astro.ch
192.53.104.79	A+PTR	it9.astro.ch
192.53.104.80	A+PTR	it10.astro.ch
192.53.104.81	A+PTR	it11.astro.ch
192.53.104.98	PTR	w98.astro.com
192.53.104.99	A+PTR	w99.astro.com
192.53.104.100	A+PTR	lv2.astro.com
192.53.104.241	A+PTR	wwc.astro.com
192.53.104.242	A+PTR	www.astro.com
192.53.104.242	A	astro.ch
192.53.104.242	A	pairhost.astro.ch
192.53.104.243	A+PTR	forum.astro.com
192.53.104.243	A	horoscope-horoscopes-astro.com
192.53.104.244	PTR	www.astro.com
192.53.104.244	A	horoscope-horoscopes-astrology.com
192.53.104.245	A+PTR	adbedit.astro.com