These entries are queried from radb.net using whois, you can try my project getting these.
:AS49203 % No entries found for the selected source(s).
AS-GOOGLE [IP]
AS-TWITTER [IP]
AS-FACEBOOK [IP]
AS-AMAZON [IP]
AS-YAHOO [IP]
AS-CLOUDFLARE [IP]
AS-WIKIMEDIA [IP]
AS-HURRICANE [IP]
AS-MICROSOFT [IP]
AS-APPLE [IP]
AS-LINODE [IP]
AS-DIGITALOCEAN [IP]
AS-AOL [IP]
AS-CN [IP]
AS-CNC [IP]
AS-EBAY [IP]
AS-CISCO [IP]
AS-BBC [IP]
AS-ROOT [IP]
AS-ICI [IP]
AS-YANDEX [IP]
AS-RUSSIA [IP]
AS-KDD [IP]
AS-CMNET [IP]
AS-AKAMAI [IP]
AS-SINGTEL [IP]
AS-TW [IP]
AS-CUSTOMERS [IP]
AS-VODAFONE [IP]
AS-DROPBOX [IP]
AS-LINKEDIN [IP]
AS-DAILYMOTION [IP]
AS-BLIX [IP]
AS-INCAPSULA [IP]
AS-TUMBLR [IP]
AS-TELEGRAM [IP]
AS42805
AS132298
AS51975
AS53582
AS266667
AS55455
AS-SDS-v6
AS18385
AS24089
AS60269
AS56054
AS263054
AS4802
AS41268
AS-TOTALPLAY
AS45634
AS2860
AS31503
AS206981
AS21337
AS394289