Robtex

Up: 210.6.24.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 210.6.28.0/23
Down right: 210.6.30.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
210.6.28.22	A+PTR	210006028022.ctinets.com
210.6.28.206	A	210006028206.ctinets.com
210.6.28.226	PTR	210006028226.ctinets.com
210.6.28.226	A	ns1.vigor-tech.com
210.6.28.226	A	trilinkle.com
210.6.29.2	A	210006029002.ctinets.com
210.6.29.50	A	210006029050.ctinets.com
210.6.29.55	A	210006029055.ctinets.com
210.6.29.72	A	210006029072.ctinets.com
210.6.29.79	A	210006029079.ctinets.com
210.6.29.134	A+PTR	210006029134.ctinets.com
210.6.29.172	A	210006029172.ctinets.com
210.6.29.229	A	210006029229.ctinets.com
210.6.29.230	A+PTR	210006029230.ctinets.com
210.6.30.55	A	210006030055.ctinets.com
210.6.30.70	A	210006030070.ctinets.com
210.6.30.97	A	210006030097.ctinets.com
210.6.30.102	A	210006030102.ctinets.com
210.6.30.122	A	210006030122.ctinets.com
210.6.30.186	A	210006030186.ctinets.com
210.6.30.229	A	210006030229.ctinets.com
210.6.31.2	A	210006031002.ctinets.com
210.6.31.13	A	210006031013.ctinets.com
210.6.31.17	A	210006031017.ctinets.com
210.6.31.141	A	210006031141.ctinets.com
210.6.31.156	A	210006031156.ctinets.com
210.6.31.158	A	210006031158.ctinets.com
210.6.31.218	A	210006031218.ctinets.com
210.6.31.219	A	210006031219.ctinets.com
210.6.31.222	A+PTR	210006031222.ctinets.com
210.6.31.236	PTR	210006031236.ctinets.com
210.6.31.236	A	registrars.talesia.com
210.6.31.236	A	kaga.hk