DATA TRANSMISSION NETWORK CORP of OMAHA, NE filed a DEFR14A with the SEC on 1999-04-02. Industry: Services-Computer Programming, Data Processing, Etc..
| Filed | Form |
|---|---|
| 2000-03-17 | SC 14D9 |
| 1999-04-02 | DEFR14A |
| 1999-04-02 | DEFR14A |
| 1999-03-09 | DEF 14A |
| 1998-04-30 | DEFR14A |
| 1998-03-13 | DEF 14A |
| 1997-03-13 | DEF 14A |
| 1996-03-15 | DEF 14A |
| 1995-03-21 | DEF 14A |