we compared 8 web hosts in common crawl's domain-level link graph. 35 non-platform domains link to all 8, while 72% of linking domains appear for only one subject. how we pulled this for each subject domain, we pulled the top 2,000 referring domains by authority from common crawl release Apr-Jun 2026 (cc-main-2026-apr-may-jun). we intersected those lists, then removed platform, cdn, social, and other non-editorial domains from the clean overlap counts. the filter matters. hosting providers, cdns, url shorteners and the big social networks link to almost everything, so leaving them in would produce a universal list that is technically correct and useless for outreach. the counts below are after that filter unless a column says otherwise. everything here comes from the open common crawl webgraph, so you can reproduce it without a paid backlink tool. subject domains domain referring domains cg authority hostinger.com 36,900 61 siteground.com 13,882 60 bluehost.com 48,747 61 dreamhost.com 36,470 61 wpengine.com 100,000 64 cloudways.com 13,795 58 kinsta.com 13,963 62 namecheap.com 16,701 62 the overlap across the 8 subjects, we found 10,077 unique linking domains. the clean universal set contains 35 domains. metric value unique linking domains 10,077 link to one subject 72% link to all 8 35 overlap distribution overlap all domains non-platform link to all 8 42 35 link to 7 89 86 link to 6 133 131 link to 5 185 182 link to 4 336 335 link to 3 614 608 link to 2 1,432 1,430 link to just 1 7,246 7,240 the distribution is the interesting part. most linking domains sit in the bottom row: they mention one product and never come back. the rows above it are where outreach lives, because a site that already covers several products in a category has an editorial reason to cover another one. a short universal list usually means the category is covered by a handful of directories, review sites and integration hubs rather than by a broad press base. a long one means the category has real editorial coverage, and the same sites are reachable for you. the highest-authority sites linking to all of them are wordpress.org, github.com and shopify.com. those are the pages worth reading before you pitch anything, because they already decided this category is worth covering. wpengine.com carries the widest referring-domain profile of the set and cloudways.com the narrowest, which is usually a function of age and press coverage rather than product quality. the gap between them is the practical opportunity: sites that cover the widest profile but not the narrowest are demonstrably willing to write about this category. the category linkers 252 non-platform domains link to at least 6 of the 8 subjects. these repeat linkers are the sites most consistently connected to web hosts. highest-overlap category linkers domain subjects cg authority links to wordpress.org 8 85 hostinger.com, siteground.com, bluehost.com, dreamhost.com, wpengine.com, cloudways.com, kinsta.com, namecheap.com github.com 8 81 hostinger.com, siteground.com, bluehost.com, dreamhost.com, wpengine.com, cloudways.com, kinsta.com, namecheap.com shopify.com 8 80 hostinger.com, siteground.com, bluehost.com, dreamhost.com, wpengine.com, cloudways.com, kinsta.com, namecheap.com hubspot.com 8 70 hostinger.com, siteground.com, bluehost.com, dreamhost.com, wpengine.com, cloudways.com, kinsta.com, namecheap.com iubenda.com 8 69 hostinger.com, siteground.com, bluehost.com, dreamhost.com, wpengine.com, cloudways.com, kinsta.com, namecheap.com sendpulse.com 8 67 hostinger.com, siteground.com, bluehost.com, dreamhost.com, wpengine.com, cloudways.com, kinsta.com, namecheap.com habr.com 8 67 hostinger.com, siteground.com, bluehost.com, dreamhost.com, wpengine.com, cloudways.com, kinsta.com, namecheap.com smallbiztrends.com 8 67 hostinger.com, siteground.com, bluehost.com, dreamhost.com, wpengine.com, cloudways.com, kinsta.com, namecheap.com freecodecamp.org 8 66 hostinger.com, siteground.com, bluehost.com, dre