The authorization code (EPP) for domain transfer is the code given by your current domain registrar for the purpose of transfer.
Here is how to get authorization code on different registrars:
- Namecheap
- GoDaddy
- Ionos
- Google Domains
- Porkbun
- Domain.com
- Hover
- NameSilo
- OVH Cloud
- Network Solutions
- DreamHost
- Bluehost
- HostGator
Note: If your domain registrar is not in list please consult help pages of your provider.