From Newsgroup: alt.bbs

The Onion Number Station is available for telnet access.

User will not be able to access with a web browser.

A Terminal emulator is required.

TOR proxy is required. Use either [torify] or [torsocks].

address: hzqsdtwalew6ykx5qs7qi4hrkjbtbs35e2l3pzbjt6224bt34rc3dhyd.onion
port: 12345

If you don't have telnet installed try netcat, ncat, or nc.

Example: torify telnet [address.onion] [port]

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