Some national telephone bodies or telephone companies have implemented an Internet -based database for their numbering spaces. numbers may be used in the Domain Name System (DNS) of the Internet in which the second-level domain has been reserved for telephone number mapping (ENUM). In the system, any phone number may be mapped into a domain name using a reverse sequence of subdomains for each digit. For example, the telephone number +1 999 555 0123 translates to the domain name . 
Yes, a letter of recommendation is an important part of any scholarship. It can be written by a teacher, a professor, an employer or a co-worker. In case you need some idea as to how this letter should be written, you can take a look at the various Coworker Recommendation Letter Templates that are available online. A recommendation from a person who has a firsthand experience of knowing and working with the person can actually improve his chances of gaining the scholarship. However, it is equally important that the writer of the letter follows the regulations that have been prescribed by the scholarship committee.