Hi @bahrulhalimi,
Presently only Indonesia is able to connect via HTTP Port 80 from around the world.
Permanent link to this check report
Best Practice - Keep Port 80 Open
Please see:
- Multi-Perspective Validation Improves Domain Validation Security - Let's Encrypt
- Let's Encrypt is adding two new remote perspectives for domain validation
- Multi-Perspective Validation & Geoblocking FAQ
- Unexpected renewal failures since April 2024? Please read this!
- Public IP addresses of Issuance process - #4 by mcpherrinm
Edit
There are also some DNS issues