1.8k URLs indexed in Search Console - 320 URLs indexed in site:domain search

Hi there,

To check indexation I normally crawl the site, then check search console and the sitemap - compare all the status codes, vlookup them against each other to make sure they match etc.

I'm used to working with lead-gen websites - just started a new job on a large ecommerce site

- sitemap, site crawl and S.C. coverage report all show approx 1.8k URLs indexed

- site: search shows 320 URLs indexed (it says "About 2,030 results (0.44 seconds)" - but upon scraping the URLs - there is only 320)

​

Is there a specific reason why Google is not showing all of the URLs on a site: search?

​

Thanks v much