Ciro Santilli alljohnny.com had a hit: ipinf.ru/domains/alljohnny.com/, and so Ciro started looking around... and a good number of other things have hits.Not all of them, definitely less data than viewdns.info.
But they do reverse IP, and they show which nearby reverse IPs have hits on the same page, for free, which is great!
Shame their ordering is purely alphabetical, doesn't properly order the IPs so it is a bit of a pain, but we can handle it.
OMG, Russians!!!
The data here had a little bit of non-overlap from other sources. 4 new confirmed hits were found, plus 4 possible others that were left as candidates.