Pues haz lo siguiente:
Incluye esto como Bookmark: javascript
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No es nada raro jaja... es solo una herramienta que se ha creado para ve los external links, esta es la fuente original
Online Sales Webmaster Tools
Bueno una vez que has hecho eso te vas a los dominios uno a uno y clicas en el bookmark ahi se te abrira una pagina con varios datos, al final están los external links
Luego con la barra de moz que es gratis miras el spam score, ademas del PA y el DA...
El proceso es lento y no muy preciso pero es que si ahrefs es lo que se me ocurre
