Ratio of linking C-blocks to Linking domains

[waidohuy]

Hi,

Our linkbuilding efforts have resulted in acquiring a high number of backlinks from domains within a C-block.

We all know Google issues penalties whenever someone's link profile looks unnatural. A high number of backlinks but a low number of linking C-blocks would seem to be one of reasons to get penalized.

Example: we have 6,000 links from 200 linking root domains coming in from 100 C-blocks.

At what point should we start to worry about being penalized/giving off an unnatural look to mr G?

[Highland]

I think you're overthinking the issue. The question is not the C blocks, but how it relates to your site. Are these links relevant? Are they using natural link text? Are you geolocated?

Remember that IPs are a technical thing, and while they count for some things, it's only one signal among many factors with your link profile.