Robtex

Up: 159.253.232.0/21
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Down left: 159.253.232.0/23
Down right: 159.253.234.0/23

IP	Type	Hostname
159.253.232.0	A+PTR	0.232.pool2.tetanet.cz
159.253.233.0	A+PTR	0.233.pool2.tetanet.cz
159.253.233.108	A	108.233.pool2.tetanet.cz
159.253.234.0	A+PTR	0.234.pool2.tetanet.cz
159.253.235.0	PTR	0.235.poll.tetanet.cz
159.253.235.0	A	0.235.pool2.tetanet.cz
159.253.235.77	PTR	77.235.poll.tetanet.cz
159.253.235.216	PTR	216.235.poll.tetanet.cz