The name of this file is cmr-Nexttel-Unlimited.hc, which is a hc format, and it is one of the files that can be downloaded and used easily.
.hc files are config files generated by HTTP Custom Mobile App and can only be opened using HTTP Custom Mobile for Android
You can upload similar files without the need for an account, or you can create an account on the site and you will be able to manage your files easily. The site supports many file formats. You can upload your files. Share it anywhere and download it anytime.