Shoot - you're totally right - that TLD is supported by OSE.
In that case, it looks like we just don't have much linking information for your site in our index.
Open Site Explorer and the Link Analysis page of campaigns are both tied to our Mozscape index, which tends to update roughly once a month.
Just a few points on how we compile our index:
- We grab the most recent index.
- We take the top 10 billion URLs with the highest MozRank (with a fixed limit on some of the larger domains).
- We start crawling from the top down until we've crawled ~130 billion URLs
The idea here is that we're focusing on the highest-quality links we can find, coming from the most prominent pages of authoritative sites. So, while you may not see every link for a site within our index, we're aiming to report the most valuable ones available!
Most new sites and links will be indexed by our spiders and available in Mozscape and Open Site Explorer within 60 days, but some take even longer for many reasons - including the crawl-ability of sites, the number of inbound links to them, and the depth of pages in subdirectories. This does bias our index slightly in favor of newer links - older links are only cached in the index for about 180 days, so unless the tools are prompted to return to those sites and re-crawl them, they may fall back out of our index after a few months.
You can see our most recently updated schedule here as well as some more technical metrics on our Mozscape API Updates page. You can also see when the last and next updates happened on the Open Site Explorer (OSE) homepage at any time.
Since Moz focuses on quality of links over quantity, we are always focused on the most relevant links to display to our users. It's possible that Moz's index will leave out some of the lower-quality (non-link juice providing) links out of our index because of this. So, that might explain why you may see some discrepancies with what other tools may be showing.
The best thing to do if you want us to find backlinks to your site is to do just what you're already doing - search for those sites in Open Site Explorer. That should prompt our tools to visit your sites and crawl the web looking for links pointing back to them. Depending on where we are with processing the current index, you should start to see more backlink information after one or two index updates.
I know that's a ton of info, so if you've still got questions, feel free to shoot us a note at help@moz.com and we'll do our best to answer them for ya!