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FTP Server Online Tester

Execution date: Wed, 04 Mar 2026 18:37:49 GMT, server: ftp.cdc.gov:21, mode: Passive EPSV, encryption: TLS disabled, test type: Query both.

IPv4 test results

Fail
198.246.121.209
---- Resolving host address...
---- 1 address found: 198.246.121.209
---- Connecting to ftp.cdc.gov (198.246.121.209) port 21
<--- 220 Microsoft FTP Service
---> USER
<--- 331 Valid hostname is expected.
---> PASS
<--- 503 Login with USER first.
---> PWD
<--- 530 Please login with USER and PASS.
---> QUIT
<--- 221 Goodbye.
---- Closing control socket

IPv6 test results

Fail
Invalid hostname / IP address
---- Resolving host address...