37 domains in our retained seo-tool sample are recorded as linking to all 8 selected tools. the downloadable projection contains 159 domains linking to six or more, so it gives a concrete starting list for competitor research. these are historical, domain-level observations, not verified current linking pages. our free backlink research guide explains how to combine this kind of open-graph evidence with other sources.
this study was originally published on june 30, 2026. we checked the retained json, csv and generated data array, then recomputed their row counts. the original graph release, collection date and per-tool capture limits were not retained. this revision does not refresh the crawl or independently reproduce the original extraction. earlier larger totals and editorial-quality percentages cannot be verified from these rows and have been removed from this article.
what was compared, and what can be checked?
the eight selected domains were ahrefs.com, semrush.com, moz.com, surferseo.com, seranking.com, majestic.com, spyfu.com, serpstat.com. the original study compared authority-ranked referring-domain lists from the common crawl web graph. the retained file records each linking domain, the number of selected tools it was recorded for, and its historical cg authority value. it retains domains with an overlap of six or more.
the downloadable json and csv contain the same 159 unique domains. their agreement verifies the saved projection, not completeness of the source lists, the filtering decisions, or today's live web. the authority score is a historical graph measure, not an editorial-quality or relevance rating. the machine-readable method notes include the original file hash and the missing provenance fields.
how many retained domains share each overlap?
| retained domains | |
|---|---|
| recorded for 8 of 8 tools | 37 |
| recorded for 7 of 8 tools | 47 |
| recorded for 6 of 8 tools | 75 |
these three groups add up to the 159 saved rows. the file excludes lower overlaps, so this table cannot describe how often a domain links to just one tool, the full referring-domain population, or any percentage of all seo publications. repeated links from one domain still represent one referring domain in this projection.
the retained domains recorded for all eight tools
domains linking to ALL 8 seo tools, by cg authority: shopify.com (79) hubspot.com (70) sharethis.com (69) entrepreneur.com (66) kinsta.com (60) explodingtopics.com (60) oberlo.com (59) marketingprofs.com (59) searchenginejournal.com (59) business2community.com (59) clickup.com (58) mention.com (58) seroundtable.com (58) coschedule.com (57) backlinko.com (57) scoop.it (56) influencermarketinghub.com (56) geekflare.com (55) hongkiat.com (55) seoptimer.com (54) travelpayouts.com (53) thimpress.com (53) spocket.co (53) plerdy.com (51) ranktracker.com (51) digitalinformationworld.com (51) ipullrank.com (50) thedigitalprojectmanager.com (49) agencyanalytics.com (49) entireweb.com (48) seonews.ru (48) trickyenough.com (47) wikimint.com (46) easkme.com (46) getsocialguide.com (46) sitepronews.com (45) alliai.com (43) 37 domains link to all eight.
inspect the full retained projection in the sortable seo-tool link leaderboard, or download the 159-row csv and json with provenance notes. the overlap chart presents the same counts and preserves the historical-sample limitation for reuse.
how do you turn a domain into a useful prospect?
the all-eight list includes trade publications, roundups and adjacent marketing products. that mix suggests places to research; it does not prove that a site currently accepts contributions or will link to a newcomer. a referring-domain edge also does not identify the page where the link appeared. qualify that context before making a request.
- open the domain and find the relevant article, resource or comparison page.
- check whether its topic and readers match your product's actual use case.
- verify current link context and remove platform, paid-link and irrelevant candidates.
- identify an editorial or contribution route and check its rules.
- offer a defensible finding, source data and limitations that help those readers.
- track responses and live placements separately from draft pitches.
sharing a referring domain with established tools says where to look. it does not predict a reply, a placement, ranking gains or an ai citation. verify relevance before using overlap or authority to prioritize outreach.
what does this mean for a smaller product?
start with two or three competitors serving the same buyer decision. a narrowly relevant resource page may be a better contribution opportunity than a famous domain that only mentions your category incidentally. this sample can supply research candidates, but it cannot tell you which sites will endorse your product or how many mentions you need.
keep the claim small enough to verify: 37 domains are recorded for all eight tools in the retained projection. broader conclusions need the original extraction, explicit sampling and current page-level checks.
how do you apply this to your own niche?
compare the referring domains of close competitors with your own, remove domains already recorded for you, then qualify the remainder. the crawlgraph gap-analysis preview asks for your email and shows five gaps; paid access unlocks the fuller result and exports. results describe the selected common crawl snapshot and can miss new links or smaller sites. check current pricing and documented limits before choosing a plan.
use the gap-analysis workflow guide to qualify and organize the candidates. retain the selected release and export limits with your own analysis so another reader can understand exactly what the finding covers.
writes the queries we run internally. ships one tactical post a week.
plus one when a new common crawl release lands. that is all.