can no longer access ftp, tracerT shows level 3 timed out.

We can no longer access our ftp site from the comcastbiz link: The ftp site is functioning and can be accessed from other ISPs.

the FileZilla for ftp client showed the follow errors:

Status: Connecting to 66.175.58.9:21...

Status: Connection established, waiting for welcome message...

Error: Could not connect to server

Ran TracerT below:

Tracing route to hostedc38.carrierzone.com [66.175.58.9] over a maximum of 30 hops:

1 13 ms 5 ms 9 ms 192.168.1.1

2 19 ms 26 ms 27 ms 73.43.242.1

3 22 ms 19 ms 19 ms 68.85.90.49

4 34 ms 27 ms 27 ms 68.86.106.1

5 27 ms 26 ms 24 ms he-0-4-0-3-cr02.56marietta.ga.ibone.comcast.net [68.86.87.201]

6 34 ms 135 ms 50 ms be-11214-cr01.56marietta.ga.ibone.comcast.net [68.86.85.165]

7 * 25 ms 43 ms 23.30.207.98

8 * 41 ms 31 ms ae-2-52.edge2.Miami2.Level3.net [4.69.138.109]

9 43 ms 35 ms 36 ms ae-2-52.edge2.Miami2.Level3.net [4.69.138.109]

10 * * * Request timed out.

11 * * * Request timed out.

12 * * * Request timed out.

13 *

This problem started off intermittenly after we switched to comcastbiz. But now, it is a persistent problem.

The tech support looked at the modem and declared it healthy. Has anyone experienced with this problem in the past? Thanks,