The character set allowed in the Domain Name System is based on ASCII and does not allow the representation of names and words of many languages in their native scripts or alphabets. ICANN approved the Internationalized domain name (IDNA) system, which maps Unicode strings used in application user interfaces into the valid DNS character set by an encoding called Punycode. For example, københavn.eu is mapped to xn--kbenhavn-54a.eu. Many registries have adopted IDNA.
Previously known as Affiliate Window but now officially referred to as “AWIN” after acquiring Zanox a few years ago, this network claims to work with over 13,000 active advertisers and 100,000 publishers (affiliates). Founded in Germany, AWIN’s merchants primarily hail from Europe (especially Great Britain) although the U.S. network is growing rapidly. AWIN is currently active in 11 countries.