add seo quake also to the above. you can check Page Rank, domain age and check wayback machine so you can see how the site looked in the past.From the top of my head, the following are metrics that you should be looking at.
1. Domain Age
2. Page Rank (has not been updated since Feb, so may not be accurate)
3. Domain Authority (Moz)
4. Citation and Trust Flow (Majestic Seo)
5. Semrush Metrics (to see if the domain has any current traffic)
6. Ahref and Majestic Back Links
Jack
From the top of my head, the following are metrics that you should be looking at.
1. Domain Age
2. Page Rank (has not been updated since Feb, so may not be accurate)
3. Domain Authority (Moz)
4. Citation and Trust Flow (Majestic Seo)
5. Semrush Metrics (to see if the domain has any current traffic)
6. Ahref and Majestic Back Links
Jack