We provide HLR reverse network lookup service for most USA Mobile operators. We offer wide coverage of USA Carriers. Simply provide a mobile phone number and our system will return the results to you. This carrier lookup service can be used manually, or with a simple HTTP API. We cover many mobile carriers in the United States. If you have a list of opt-in mobile phone numbers, you can validate the mobile operator to which they belong. Once the mobile carrier is known, "Email to SMS" (Email2SMS) can be also utilized to save SMS delivery costs. Please register for an account and inside the account, you can either manually enter mobile cellphone numbers into a simple interface to retrieve HLR lookup results, or you can use the HTTP API link provided in your account to perform the Network Lookup automatically. For more information on the simplicity of using our reverse mobile carrier lookup service, please visit our FAQ. Try our demo, username=demo11, password=demo11.