{"id":2452,"date":"2025-10-22T10:20:23","date_gmt":"2025-10-22T07:20:23","guid":{"rendered":"https:\/\/www.turkticaret.net\/blog\/?p=2452"},"modified":"2026-10-21T15:01:05","modified_gmt":"2026-10-21T12:01:05","slug":"domain-alan-adi-nedir","status":"publish","type":"post","link":"https:\/\/www.turkticaret.net\/blog\/domain-alan-adi-nedir\/","title":{"rendered":"Domain (Alan Ad\u0131) Nedir?"},"content":{"rendered":"

Alan ad\u0131, bir web sitesine veya e-posta sistemine ula\u015fmak i\u00e7in kullan\u0131lan, insanlar taraf\u0131ndan okunabilir internet adresidir. <\/span>Domain<\/b>, teknik olarak say\u0131sal IP adreslerinin yerini tutan ve kay\u0131t kurulu\u015flar\u0131 arac\u0131l\u0131\u011f\u0131yla belirli bir s\u00fcre i\u00e7in tahsis edilen benzersiz bir isimdir.<\/span><\/p>\n

\"Domain\"<\/p>\n

Domain Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/b><\/h2>\n

Alan ad\u0131, taray\u0131c\u0131ya yaz\u0131ld\u0131\u011f\u0131 anda tek ba\u015f\u0131na bir i\u00e7erik ta\u015f\u0131maz; arka planda bir isim \u00e7\u00f6z\u00fcmleme s\u00fcreci ba\u015flat\u0131r. Bu s\u00fcre\u00e7, yazd\u0131\u011f\u0131n\u0131z ismi sunucunun ger\u00e7ek adresine, yani bir IP adresine d\u00f6n\u00fc\u015ft\u00fcrerek ba\u011flant\u0131n\u0131n kurulmas\u0131n\u0131 sa\u011flar.<\/span><\/p>\n

Sunucular birbirleriyle <\/span>192.0.2.10<\/span> gibi IPv4 veya <\/span>2001:db8::1<\/span> gibi IPv6 bi\u00e7imindeki say\u0131sal adresler \u00fczerinden haberle\u015fir. Bu adresleri ak\u0131lda tutmak pratik olmad\u0131\u011f\u0131 i\u00e7in isim sistemi geli\u015ftirilmi\u015ftir. Alan ad\u0131, bu say\u0131sal adresin \u00f6n\u00fcne ge\u00e7en bir etiket g\u00f6revi g\u00f6r\u00fcr ve sunucu adresi de\u011fi\u015fti\u011finde bile ziyaret\u00e7inin kulland\u0131\u011f\u0131 adresin ayn\u0131 kalmas\u0131na imk\u00e2n tan\u0131r.<\/span><\/p>\n

\u00c7\u00f6z\u00fcmleme iste\u011fi \u00f6nce kullan\u0131c\u0131n\u0131n ba\u011fl\u0131 oldu\u011fu \u00e7\u00f6z\u00fcmleyici sunucuya gider. \u00c7\u00f6z\u00fcmleyici, cevab\u0131 \u00f6nbelle\u011finde bulamazsa s\u0131ras\u0131yla k\u00f6k sunuculara, ard\u0131ndan ilgili uzant\u0131n\u0131n sunucular\u0131na ve son olarak alan ad\u0131n\u0131n yetkili ad sunucular\u0131na ba\u015fvurur. D\u00f6nen kay\u0131t, kayd\u0131n TTL de\u011feri boyunca \u00f6nbellekte tutulur; bu nedenle yap\u0131lan bir de\u011fi\u015fikli\u011fin t\u00fcm a\u011flarda g\u00f6r\u00fcnmesi belirli bir s\u00fcre alabilir.<\/span><\/p>\n

\"Domain<\/p>\n

Alan Ad\u0131 Yap\u0131s\u0131: B\u00f6l\u00fcmler ve Yaz\u0131m Kurallar\u0131<\/b><\/h2>\n

Her domain, noktalarla ayr\u0131lm\u0131\u015f etiketlerden olu\u015fur ve bu etiketler sa\u011fdan sola do\u011fru hiyerar\u015fik bir yap\u0131 kurar. \u00d6rne\u011fin <\/span>blog.ornekfirma.com<\/span> adresinde <\/span>com<\/span> uzant\u0131y\u0131, <\/span>ornekfirma<\/span> tescil edilen ismi, <\/span>blog<\/span> ise alt alan ad\u0131n\u0131 temsil eder.<\/span><\/p>\n

Uzant\u0131, yani \u00fcst seviye alan ad\u0131 (TLD) hiyerar\u015finin en \u00fcst\u00fcnde yer al\u0131r. <\/span>Domain kayd\u0131<\/span><\/a> s\u0131ras\u0131nda sat\u0131n al\u0131nan k\u0131s\u0131m, uzant\u0131n\u0131n hemen solundaki ikinci seviye isimdir. Alt alan adlar\u0131 ise sahip olunan alan ad\u0131n\u0131n alt\u0131nda, ek bir \u00fccret \u00f6demeden ad sunucusu \u00fczerinden tan\u0131mlan\u0131r ve farkl\u0131 bir sunucuya ya da farkl\u0131 bir hizmete y\u00f6nlendirilebilir.<\/span><\/p>\n

Yaz\u0131m kurallar\u0131 DNS standartlar\u0131yla belirlenmi\u015ftir ve kay\u0131t s\u0131ras\u0131nda do\u011frudan etkili olur:<\/span><\/p>\n