The addresses for accessing the services of the idCAT Registration Entity are as follows:
| service | environment | domain name | New service IP | Ports to be kept open | Description |
| idCAT service | production | www.idcat.cat | 212.31.61.101 | 80, 443 and 4443 | Website of the operators of the idCAT registration entities |
| Time validation and authority services | production | ocsp.catcert.cat | 212.31.61.102 | 80 | OCSP Validation Service |
We recommend that you provide this information to the IT technicians or the people who are in charge of systems within the idCAT Registration Entity so that, in the event that any firewall or communications element that filters communications has it to external IP addresses, it must be configured to allow access to these IPs and ports indicated.
