Did you just download a file that has a digital signature from Network & Speed Limited and wonder if the file is safe? If that's the case, please read on.
You will typically notice Network & Speed Limited when double-clicking to run the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view the additional details from the Network & Speed Limited digital signature with the following procedure:
Here is a screenshot of a file digitally signed by Network & Speed Limited:

As you can see in the screenshot above, Windows states that "This digital signature is OK". This implies that the file has been published by Network & Speed Limited and that the file has not been tampered with.
If you click the View Certificate button shown in the screengrab above, you can see all the details of the certificate, such as when it was issued, who issued the certificate, how long it is valid, etc. You can also examine the address for Network & Speed Limited, such as the street name, city and country.
DigiCert EV Code Signing CA and DigiCert High Assurance Code Signing CA-1 has issued the Network & Speed Limited certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screenshot above.
The following are the Network & Speed Limited files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/72 | networkdlllspx64.dll |
| 0/67 | networkdlllsp.dll |
The detection percentage is based on the fact that I have gathered 139 scan reports for the Network & Speed Limited files. 0 of these scan reports came up with some sort of detection. If you like, you can review the full details of the scan reports by examining the files listed above.
The analysis is done on certificates with the following serial numbers: