To ensure optimal performance, network stability, and security across our proxy infrastructure, we block access to specific ports commonly associated with abuse, spam, malware, or services that are not supported via our proxies.
If you're experiencing connectivity issues or your tool is failing to connect, it's worth checking whether the port you're trying to access is on the blocked list.
Below is the complete list of ports we currently block across our network.
Blocked Ports
389
379
390
3268
636
691
102
135
522
24
25
2525
25025
2526
2527
2528
5252
110
143
587
995
993
55555
52943
43594
4080
3000
3478
4080
8008
8080
8090
10001
2082
2083
2086
2087
2089
465
Why Are These Ports Blocked?
Most of these ports are associated with:
Email protocols (SMTP, IMAP, POP3)
Remote desktop and shell access (SSH, RDP, Telnet)
Database connections (MySQL, MSSQL, PostgreSQL, etc.)
P2P, proxy chaining, and tunneling
Malware and botnet behavior
DDoS amplification vectors
Ports with high abuse reports or scanning activity
By blocking these ports, we reduce the risk of abuse and maintain the integrity of our services for legitimate users.
Need to Access a Specific Port?
If you believe a specific port should not be blocked for your use case, please contact our support team. While we don't typically make exceptions, we're happy to review requests on a case-by-case basis.
For any questions or help, feel free to contact support or visit our Help Center.