Reverse DNS lookup for '212.161.70.0/24' on 26 Feb 2020.

[colt.net]
212.161.70.21  a3-0-901.ctf-10.ctf.lon.uk.colt.net [GB]
212.161.70.22  cust-a3-0-901.ctf-10.ctf.lon.uk.colt.net [GB]
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