How can I validate the issuance of the SSL Certificate for a public IP?

Validation is done through a process called HTTP Hash.

To perform this validation, you need to publish a hash file on the web server that responds to requests directed to your IP address.

You must download this hash file through your Customer Portal.

The hash file should be published in the following directory on your web server:

.well-known/pki-validation/

Example:

Hash file: .well-known/pki-validation/783F6203ED5331A35ZDF4BA503F0E091.txt

Hash file Content: Y821159AF31E86897D5C2F5EA547CC1D22724885F89680C5A161DAF11AC7445Z

For the validation to be successful, it's essential that this file is accessible via the Internet through your IP address, on port 80 or 443. For example:

http://1.1.1.1/.well-known/pki-validation/783F6203ED5331A35ZDF4BA503F0E091.txt

https://1.1.1.1/.well-known/pki-validation/783F6203ED5331A35ZDF4BA503F0E091.txt

You only need to temporarily enable port 80 or 443 on the server until the SSL certificate is issued. After issuance, the SSL certificate can be used on another port.

To buy or renew an IP SSL/TLS certificate, check out our offers: https://flexbox.cloud/en/ssl-certificate-for-ip/

Updated on: 27/10/2025

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