Twitter blocks users from sharing Mastodon links

Twitter Suspends Accounts for Mastodon, Journalists Who Cover Elon Musk

Twitter is now blocking tweets that include links to Mastodon, its competitor

Twitter suspends Mastodon’s account and bans links to Mastodon servers

Elon Musk’s Twitter Bans and Blocks Links to Rival Mastodon

Twitter Suspends Accounts For Rival Mastodon And Several High-Profile Journalists