Our development team has just added backlink data to the Domain Whois endpoint of DataForSEO Labs and Domains Database.
You can now find this data in the backlinks_info object:
"backlinks_info": {
"referring_domains": 65469011,
"referring_main_domains": 33563324,
"referring_pages": 77405607961,
"dofollow": 66351150396,
"backlinks": 99337131695,
"time_update": "2022-08-24 18:27:48 +00:00"
}
Learn more about the technical details in our documentation.