Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Hanyar wucewa: Tsarin yanki yana sauka daga dama zuwa hagu; kowane lakabi zuwa hagu yana ƙayyade ƙaramin yanki, ko ƙaramin yanki na yankin zuwa dama. Misali, alamar misali tana ƙayyade wani yanki na yankin com, kuma www yanki ne na misali.com. Wannan itace na subdivisions na iya samun har zuwa 127 matakan.Label na iya ƙunsar sifili zuwa haruffa 63. Alamar null, na tsawon sifili, an tanada shi don yankin tushen. Cikakken sunan yankin ba zai iya wuce tsawon haruffa 253 a cikin wakilcinsa na rubutu ba. A cikin wakilcin binary na ciki na DNS matsakaicin tsayi yana buƙatar 255 octets na ajiya, kamar yadda kuma yana adana tsawon sunan. Kodayake babu iyakancewar fasaha don amfani da kowane hali a cikin alamun sunan yankin wanda za'a iya wakilta ta octet, sunayen masauki suna amfani da tsarin da aka fi so da saitin haruffa. Alamomin da aka yarda a cikin alamomi sune wani ɓangare na saitin haruffan ASCII, wanda ya ƙunshi haruffa a ta hanyar z, A ta hanyar Z, lambobi 0 zuwa 9, da kuma hyphen. Wannan doka an san shi da LDH doka (haruffa, lambobi, hyphen). Ana fassara sunayen yanki ta hanyar da ba ta dace ba. Labaran bazai iya farawa ko ƙare tare da hyphen ba. Wani ƙarin doka yana buƙatar cewa sunayen yanki na matakin farko bai kamata su zama lambobi ba. Iyakantaccen saitin haruffan ASCII da aka yarda da su a cikin DNS sun hana wakilcin sunaye da kalmomin yaruka da yawa a cikin haruffa na asali ko rubutun su. Don yin wannan zai yiwu, ICANN ta amince da Tsarin Sunan Sunan Yanki na Duniya a Aikace-aikace (IDNA), wanda aikace-aikacen masu amfani, kamar masu bincike na yanar gizo, ke tsara layukan Unicode a cikin ingantaccen saitin halayen DNS ta amfani da Punycode. A cikin 2009 ICANN ta amince da shigar da sunan yanki na ƙasa da ƙasa na ƙasa mafi girma (ccTLDs). Bugu da ƙari, yawancin rajista na sunayen yanki na yanzu (TLDs) sun karɓi tsarin IDNA, wanda RFC 5890, RFC 5891, RFC 5892, RFC 5893 ke jagoranta.  Tambaya: Menene iyakar matakan rarraba bishiyoyi?
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