Port 1521Oracle DB
Oracle Database Listener
About Port 1521
Port 1521 is the default port for Oracle Database TNS Listener, which manages incoming client connection requests to Oracle database instances.
Security NotesRestrict access to known clients. Keep Oracle software patched and use encrypted connections. Never use default credentials.
Total Hosts
521.1K
TLS Encrypted
0.0%
Vulnerable Hosts
7.5K
Countries
10+
Top Services
| http | 459,882 |
| socks5 | 38,150 |
| mysql | 4,751 |
| telnet | 2,491 |
| ssl | 2,450 |
| ssh | 2,019 |
| http-proxy | 1,702 |
| ftp | 1,636 |
| dgld | 1,585 |
| oracle-tns | 1,066 |
Top Countries
 United States | 367,354 |
 China | 48,556 |
 Israel | 33,203 |
 Hong Kong | 15,282 |
 Japan | 2,284 |
 United Kingdom | 2,228 |
 Singapore | 1,823 |
 Germany | 1,799 |
 Malaysia | 1,746 |
 Netherlands | 1,678 |
Top Products
| HTTP | 97,151 |
| Nginx | 8,112 |
| Microsoft HTTPAPI httpd | 7,615 |
| MySQL | 4,398 |
| nginx | 3,936 |
| OpenSSH | 1,772 |
| IRIX Distributed GL Daemon | 1,585 |
| HAProxy http proxy | 1,563 |
| pennmush MUD server | 1,536 |
| Oracle TNS Listener | 1,066 |