It seems to be a lock by the Registrar, but it can be removed.

clientTransferProhibited
client transfer prohibited

This status code tells your domain's registry to reject requests to transfer the domain from your current registrar to another.

EPP Status Codes from ICANN

REGISTRAR-LOCK is a status code that can be set on an Internet domain name by the sponsoring registrar of the domain name. This is usually done in order to prevent unauthorized, unwanted or accidental changes to the domain name.

What does domain status clientTransferProhibited mean?

It seems to be a lock by the Registrar, but it can be removed.

clientTransferProhibited
client transfer prohibited

This status code tells your domain's registry to reject requests to transfer the domain from your current registrar to another.

EPP Status Codes from ICANN

REGISTRAR-LOCK is a status code that can be set on an Internet domain name by the sponsoring registrar of the domain name. This is usually done in order to prevent unauthorized, unwanted or accidental changes to the domain name.

What does domain status clientTransferProhibited mean?

Note

All my 9 domains show the clientTransferProhibited, without the ok status. There is, no second line. And I believe it shows clientTransferProhibited because I have disabled the Sell My Domain flag.