{"id":1718,"date":"2026-07-26T17:30:59","date_gmt":"2026-07-26T14:30:59","guid":{"rendered":"https:\/\/verimin.com.tr\/blog\/?p=1718"},"modified":"2026-07-26T17:30:59","modified_gmt":"2026-07-26T14:30:59","slug":"subdomain-nedir","status":"publish","type":"post","link":"https:\/\/verimin.com.tr\/blog\/subdomain-nedir\/","title":{"rendered":"Subdomain Nedir? Alt Alan Ad\u0131 Olu\u015fturma ve Kullan\u0131m Rehberi"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Subdomain, bir alan ad\u0131n\u0131n \u00f6n\u00fcne eklenen ve o alan ad\u0131na ba\u011fl\u0131 ayr\u0131 bir b\u00f6l\u00fcm olu\u015fturan \u00fc\u00e7\u00fcnc\u00fc seviye adres birimidir. blog.ornek.com adresindeki &#8220;blog&#8221; k\u0131sm\u0131 bir subdomain&#8217;dir. Ana alan ad\u0131n\u0131z ayn\u0131 kal\u0131r, ancak onun alt\u0131nda teknik olarak ba\u011f\u0131ms\u0131z \u00e7al\u0131\u015fan yeni bir adres elde edersiniz.<\/p><p class=\"wp-block-paragraph\">Bu rehberde subdomain&#8217;in <a href=\"https:\/\/verimin.com.tr\/alan-adi\" data-internallinksmanager029f6b8e52c=\"1\" title=\"domain\">alan ad\u0131<\/a> hiyerar\u015fisindeki yerini, alt klas\u00f6rden fark\u0131n\u0131, cPanel \u00fczerinden olu\u015fturma ad\u0131mlar\u0131n\u0131, gereken DNS kay\u0131tlar\u0131n\u0131, <a href=\"https:\/\/verimin.com.tr\/ssl-sertifikalari\" data-internallinksmanager029f6b8e52c=\"13\" title=\"ssl sertifikas\u0131\">SSL<\/a> durumunu, s\u0131k kar\u015f\u0131la\u015f\u0131lan hatalar\u0131 ve <a href=\"https:\/\/verimin.com.tr\/seo-paketleri\" data-internallinksmanager029f6b8e52c=\"10\" title=\"seo paketleri\">SEO<\/a> etkisini bulacaks\u0131n\u0131z. Anlat\u0131m hem ilk sitesini kuranlar hem de mevcut yap\u0131s\u0131n\u0131 b\u00f6lmek isteyen webmasterlar i\u00e7in haz\u0131rland\u0131.<\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_73 ez-toc-wrap-left counter-flat ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<div class=\"ez-toc-title\" style=\"cursor:inherit\">\u0130\u00e7erik Ba\u015fl\u0131klar\u0131:<\/div>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/verimin.com.tr\/blog\/subdomain-nedir\/#Subdomain_ne_demek_ve_alan_adi_yapisinda_nereye_oturur\" title=\"Subdomain ne demek ve alan ad\u0131 yap\u0131s\u0131nda nereye oturur?\">Subdomain ne demek ve alan ad\u0131 yap\u0131s\u0131nda nereye oturur?<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/verimin.com.tr\/blog\/subdomain-nedir\/#Subdomain_ile_alt_klasor_subdirectory_arasindaki_fark_nedir\" title=\"Subdomain ile alt klas\u00f6r (subdirectory) aras\u0131ndaki fark nedir?\">Subdomain ile alt klas\u00f6r (subdirectory) aras\u0131ndaki fark nedir?<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/verimin.com.tr\/blog\/subdomain-nedir\/#Subdomain_hangi_durumlarda_kullanilir\" title=\"Subdomain hangi durumlarda kullan\u0131l\u0131r?\">Subdomain hangi durumlarda kullan\u0131l\u0131r?<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/verimin.com.tr\/blog\/subdomain-nedir\/#cPanel_uzerinden_subdomain_nasil_olusturulur\" title=\"cPanel \u00fczerinden subdomain nas\u0131l olu\u015fturulur?\">cPanel \u00fczerinden subdomain nas\u0131l olu\u015fturulur?<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/verimin.com.tr\/blog\/subdomain-nedir\/#Subdomain_icin_hangi_DNS_kaydi_gerekir\" title=\"Subdomain i\u00e7in hangi DNS kayd\u0131 gerekir?\">Subdomain i\u00e7in hangi DNS kayd\u0131 gerekir?<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/verimin.com.tr\/blog\/subdomain-nedir\/#Subdomain_baska_bir_adrese_nasil_yonlendirilir\" title=\"Subdomain ba\u015fka bir adrese nas\u0131l y\u00f6nlendirilir?\">Subdomain ba\u015fka bir adrese nas\u0131l y\u00f6nlendirilir?<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/verimin.com.tr\/blog\/subdomain-nedir\/#Subdomain_SSL_sertifikasi_ile_korunur_mu\" title=\"Subdomain SSL sertifikas\u0131 ile korunur mu?\">Subdomain SSL sertifikas\u0131 ile korunur mu?<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/verimin.com.tr\/blog\/subdomain-nedir\/#%E2%80%9CSubdomain_already_exists%E2%80%9D_hatasi_neden_alinir\" title=\"&#8220;Subdomain already exists&#8221; hatas\u0131 neden al\u0131n\u0131r?\">&#8220;Subdomain already exists&#8221; hatas\u0131 neden al\u0131n\u0131r?<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/verimin.com.tr\/blog\/subdomain-nedir\/#Ucretsiz_subdomain_kullanmak_mantikli_mi\" title=\"\u00dccretsiz subdomain kullanmak mant\u0131kl\u0131 m\u0131?\">\u00dccretsiz subdomain kullanmak mant\u0131kl\u0131 m\u0131?<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/verimin.com.tr\/blog\/subdomain-nedir\/#Subdomain_SEOyu_nasil_etkiler\" title=\"Subdomain SEO&#8217;yu nas\u0131l etkiler?\">Subdomain SEO&#8217;yu nas\u0131l etkiler?<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/verimin.com.tr\/blog\/subdomain-nedir\/#Ozet\" title=\"\u00d6zet\">\u00d6zet<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Subdomain_ne_demek_ve_alan_adi_yapisinda_nereye_oturur\"><\/span>Subdomain ne demek ve alan ad\u0131 yap\u0131s\u0131nda nereye oturur?<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">Subdomain, alan ad\u0131 hiyerar\u015fisinde ikinci seviye alan ad\u0131n\u0131n solunda yer alan etikettir. blog.ornek.com adresini sa\u011fdan sola okudu\u011funuzda s\u0131ras\u0131yla uzant\u0131y\u0131 (.com), ikinci seviye alan ad\u0131n\u0131 (ornek) ve subdomain&#8217;i (blog) g\u00f6r\u00fcrs\u00fcn\u00fcz.<\/p><p class=\"wp-block-paragraph\">Bu yap\u0131 DNS&#8217;in a\u011fa\u00e7 mant\u0131\u011f\u0131ndan gelir. Her nokta bir seviye ay\u0131r\u0131r ve her seviyeye &#8220;etiket&#8221; denir. Bir etiket en fazla 63 karakter olabilir, tam alan ad\u0131n\u0131n tamam\u0131 ise 253 karakteri a\u015famaz. Etiketlerde harf, rakam ve tire kullan\u0131l\u0131r; tire ba\u015fta veya sonda bulunamaz.<\/p><p class=\"wp-block-paragraph\">\u00c7ok bilinmeyen bir ayr\u0131nt\u0131 \u015fudur: www da teknik olarak bir subdomain&#8217;dir. ornek.com ile www.ornek.com farkl\u0131 iki host ad\u0131d\u0131r ve ikisinin de DNS&#8217;te ayr\u0131 kayd\u0131 olmas\u0131 gerekir. Ayn\u0131 \u015fekilde subdomain&#8217;i katmanlayabilirsiniz; test.blog.ornek.com ge\u00e7erli bir adrestir ve d\u00f6rd\u00fcnc\u00fc seviyede \u00e7al\u0131\u015f\u0131r. Pratikte iki seviyeden fazlas\u0131na inmek y\u00f6netimi zorla\u015ft\u0131r\u0131r.<\/p><p class=\"wp-block-paragraph\">Subdomain a\u00e7abilmek i\u00e7in \u00f6nce bir alan ad\u0131na sahip olman\u0131z gerekir. <a href=\"https:\/\/verimin.com.tr\/alan-adi\">Alan ad\u0131 tescili ve y\u00f6netimi<\/a> tamamland\u0131ktan sonra, o alan ad\u0131 alt\u0131nda a\u00e7aca\u011f\u0131n\u0131z subdomain say\u0131s\u0131 i\u00e7in genellikle ek bir tescil \u00fccreti olu\u015fmaz; s\u0131n\u0131r\u0131 hosting paketiniz belirler.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Subdomain_ile_alt_klasor_subdirectory_arasindaki_fark_nedir\"><\/span>Subdomain ile alt klas\u00f6r (subdirectory) aras\u0131ndaki fark nedir?<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">Subdomain ayr\u0131 bir host ad\u0131d\u0131r, alt klas\u00f6r ise ayn\u0131 host \u00fczerindeki bir dizin yoludur. blog.ornek.com bir subdomain, ornek.com\/blog ise alt klas\u00f6rd\u00fcr. \u0130kisi de taray\u0131c\u0131da benzer g\u00f6r\u00fcn\u00fcr ama teknik davran\u0131\u015flar\u0131 farkl\u0131d\u0131r.<\/p><figure class=\"wp-block-table\"><table><thead><tr><th>Kriter<\/th><th>Subdomain (blog.ornek.com)<\/th><th>Alt klas\u00f6r (ornek.com\/blog)<\/th><\/tr><\/thead><tbody><tr><td>DNS kayd\u0131<\/td><td>Ayr\u0131 kay\u0131t gerekir<\/td><td>Gerekmez<\/td><\/tr><tr><td>SSL<\/td><td>Ayr\u0131 sertifika veya wildcard gerekir<\/td><td>Ana sertifika kapsar<\/td><\/tr><tr><td>Farkl\u0131 sunucuya ta\u015f\u0131ma<\/td><td>M\u00fcmk\u00fcn<\/td><td>M\u00fcmk\u00fcn de\u011fil<\/td><\/tr><tr><td>\u00c7erez ve oturum<\/td><td>Varsay\u0131landa payla\u015f\u0131lmaz<\/td><td>Payla\u015f\u0131l\u0131r<\/td><\/tr><tr><td>Taray\u0131c\u0131 k\u00f6ken (origin)<\/td><td>Farkl\u0131 k\u00f6ken, CORS gerekir<\/td><td>Ayn\u0131 k\u00f6ken<\/td><\/tr><\/tbody><\/table><\/figure><p class=\"wp-block-paragraph\">Taray\u0131c\u0131lar i\u00e7in blog.ornek.com ve ornek.com iki ayr\u0131 k\u00f6kendir. Bu nedenle iki adres aras\u0131nda JavaScript ile veri \u00e7ekecekseniz CORS ba\u015fl\u0131klar\u0131 tan\u0131mlaman\u0131z gerekir. Oturum \u00e7erezini payla\u015fmak isterseniz \u00e7erezi ana alan ad\u0131 kapsam\u0131nda (.ornek.com) yazman\u0131z gerekir.<\/p><p class=\"wp-block-paragraph\">Se\u00e7im kural\u0131 sadedir: i\u00e7erik ana sitenin konusunu destekliyorsa alt klas\u00f6r, teknik veya kurumsal olarak ayr\u0131\u015fan bir yap\u0131 kuruyorsan\u0131z subdomain uygundur.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Subdomain_hangi_durumlarda_kullanilir\"><\/span>Subdomain hangi durumlarda kullan\u0131l\u0131r?<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">Subdomain, ana siteden ayr\u0131\u015fmas\u0131 gereken her b\u00f6l\u00fcm i\u00e7in kullan\u0131l\u0131r. En yayg\u0131n senaryolar blog, ma\u011faza, destek merkezi, API servisi, statik dosya sunumu ve test ortam\u0131d\u0131r.<\/p><p class=\"wp-block-paragraph\">Pratikte s\u0131k g\u00f6r\u00fclen kullan\u0131mlar \u015funlard\u0131r:<\/p><ul class=\"wp-block-list\"><li><strong>Farkl\u0131 teknoloji:<\/strong> Ana site <a href=\"https:\/\/verimin.com.tr\/wordpress-hosting\" data-internallinksmanager029f6b8e52c=\"4\" title=\"wordpress\">WordPress<\/a> ile \u00e7al\u0131\u015f\u0131rken uygulaman\u0131z Node.js veya Python isteyebilir. Uygulamay\u0131 app.ornek.com \u00fczerinde ayr\u0131 \u00e7al\u0131\u015ft\u0131r\u0131rs\u0131n\u0131z.<\/li><li><strong>Test ve geli\u015ftirme:<\/strong> test.ornek.com veya staging.ornek.com \u00fczerinde deneme yapars\u0131n\u0131z. Bu subdomain&#8217;i mutlaka parola korumas\u0131na al\u0131n ve arama motorlar\u0131na kapat\u0131n.<\/li><li><strong>Dil ve \u00fclke ayr\u0131m\u0131:<\/strong> en.ornek.com veya de.ornek.com ile farkl\u0131 pazarlar\u0131 ay\u0131r\u0131rs\u0131n\u0131z.<\/li><li><strong>Servis ayr\u0131m\u0131:<\/strong> mail.ornek.com, panel.ornek.com, cdn.ornek.com gibi adreslerle hizmetleri isimlendirirsiniz.<\/li><li><strong>M\u00fc\u015fteri bazl\u0131 yap\u0131:<\/strong> Yaz\u0131l\u0131m hizmeti veriyorsan\u0131z her m\u00fc\u015fteriye musteri1.ornek.com bi\u00e7iminde ayr\u0131 bir subdomain tan\u0131mlars\u0131n\u0131z.<\/li><\/ul><p class=\"wp-block-paragraph\">Ayr\u0131 subdomain kullanman\u0131n operasyonel bir faydas\u0131 daha vard\u0131r: yo\u011fun trafikli bir b\u00f6l\u00fcm\u00fc, ana siteyi etkilemeden farkl\u0131 bir sunucuya ta\u015f\u0131yabilirsiniz. Bunun i\u00e7in sadece ilgili DNS kayd\u0131n\u0131 de\u011fi\u015ftirmeniz yeterlidir.<\/p>\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1672\" height=\"941\" src=\"https:\/\/verimin.com.tr\/blog\/wp-content\/uploads\/2026\/07\/cpanel-subdomain-olusturma.avif\" alt=\"cPanel Domains ekran\u0131nda yeni subdomain olu\u015fturma formu\" class=\"wp-image-1824\" srcset=\"https:\/\/verimin.com.tr\/blog\/wp-content\/uploads\/2026\/07\/cpanel-subdomain-olusturma.avif 1672w, https:\/\/verimin.com.tr\/blog\/wp-content\/uploads\/2026\/07\/cpanel-subdomain-olusturma-300x169.avif 300w, https:\/\/verimin.com.tr\/blog\/wp-content\/uploads\/2026\/07\/cpanel-subdomain-olusturma-1024x576.avif 1024w, https:\/\/verimin.com.tr\/blog\/wp-content\/uploads\/2026\/07\/cpanel-subdomain-olusturma-768x432.avif 768w, https:\/\/verimin.com.tr\/blog\/wp-content\/uploads\/2026\/07\/cpanel-subdomain-olusturma-1536x864.avif 1536w, https:\/\/verimin.com.tr\/blog\/wp-content\/uploads\/2026\/07\/cpanel-subdomain-olusturma-195x110.avif 195w, https:\/\/verimin.com.tr\/blog\/wp-content\/uploads\/2026\/07\/cpanel-subdomain-olusturma-390x220.avif 390w, https:\/\/verimin.com.tr\/blog\/wp-content\/uploads\/2026\/07\/cpanel-subdomain-olusturma-1170x658.avif 1170w\" sizes=\"auto, (max-width: 1672px) 100vw, 1672px\" \/><\/figure>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"cPanel_uzerinden_subdomain_nasil_olusturulur\"><\/span>cPanel \u00fczerinden subdomain nas\u0131l olu\u015fturulur?<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">cPanel&#8217;de subdomain, &#8220;Domains&#8221; (eski s\u00fcr\u00fcmlerde &#8220;Subdomains&#8221;) b\u00f6l\u00fcm\u00fcnden birka\u00e7 ad\u0131mda olu\u015fturulur. \u0130\u015flem hosting panelinde yap\u0131l\u0131r ve genellikle bir dakikadan k\u0131sa s\u00fcrer.<\/p><p class=\"wp-block-paragraph\">Ad\u0131mlar \u015fu \u015fekildedir:<\/p><ol class=\"wp-block-list\"><li>cPanel&#8217;e giri\u015f yap\u0131n ve <strong>Domains<\/strong> b\u00f6l\u00fcm\u00fcn\u00fc a\u00e7\u0131n.<\/li><li><strong>Create A Domain<\/strong> d\u00fc\u011fmesine t\u0131klay\u0131n.<\/li><li>Domain alan\u0131na tam adresi yaz\u0131n: blog.ornek.com<\/li><li><strong>Share document root<\/strong> se\u00e7ene\u011finin i\u015faretini kald\u0131r\u0131n. Bu se\u00e7enek i\u015faretliyken subdomain ana sitenin dosyalar\u0131n\u0131 g\u00f6sterir.<\/li><li>Document root sat\u0131r\u0131n\u0131 kontrol edin. cPanel varsay\u0131lan olarak public_html\/blog gibi bir dizin \u00f6nerir; isterseniz de\u011fi\u015ftirin.<\/li><li><strong>Submit<\/strong> ile kaydedin.<\/li><\/ol><p class=\"wp-block-paragraph\">cPanel&#8217;in 100 ve \u00fczeri s\u00fcr\u00fcmlerinde ayr\u0131 &#8220;Subdomains&#8221; ekran\u0131 kald\u0131r\u0131lm\u0131\u015f, subdomain olu\u015fturma i\u015flemi Domains ekran\u0131yla birle\u015ftirilmi\u015ftir. Alan ad\u0131n\u0131z\u0131n nameserver kay\u0131tlar\u0131 ayn\u0131 sunucuyu g\u00f6steriyorsa cPanel, subdomain i\u00e7in gereken DNS kayd\u0131n\u0131 otomatik ekler.<\/p><p class=\"wp-block-paragraph\">Olu\u015fturma sonras\u0131 adres \u00e7o\u011fu durumda birka\u00e7 dakika i\u00e7inde a\u00e7\u0131l\u0131r. Ancak DNS \u00f6nbelle\u011fi nedeniyle baz\u0131 a\u011flarda yay\u0131lma 24 saati bulabilir. Bu s\u00fcre kayd\u0131n TTL de\u011ferine ve ara sunucular\u0131n \u00f6nbellek davran\u0131\u015f\u0131na g\u00f6re de\u011fi\u015fir.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Subdomain_icin_hangi_DNS_kaydi_gerekir\"><\/span>Subdomain i\u00e7in hangi DNS kayd\u0131 gerekir?<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">Subdomain i\u00e7in A, AAAA veya CNAME kay\u0131tlar\u0131ndan biri gerekir. Hedef bir IP adresiyse A (IPv4) ya da AAAA (IPv6), hedef ba\u015fka bir host ad\u0131ysa CNAME kullan\u0131l\u0131r.<\/p><p class=\"wp-block-paragraph\">Kay\u0131t se\u00e7imini \u015f\u00f6yle yapabilirsiniz:<\/p><ul class=\"wp-block-list\"><li><strong>A kayd\u0131:<\/strong> blog ad\u0131n\u0131 do\u011frudan sunucunun IPv4 adresine ba\u011flar. En yayg\u0131n kullan\u0131md\u0131r.<\/li><li><strong>AAAA kayd\u0131:<\/strong> Ayn\u0131 i\u015fi IPv6 adresi i\u00e7in yapar.<\/li><li><strong>CNAME kayd\u0131:<\/strong> blog ad\u0131n\u0131 ba\u015fka bir host ad\u0131na takma ad olarak ba\u011flar. Harici bir servis kullan\u0131yorsan\u0131z gereklidir.<\/li><li><strong>Wildcard kayd\u0131:<\/strong> *.ornek.com bi\u00e7iminde tan\u0131mlan\u0131r ve tan\u0131mlanmam\u0131\u015f t\u00fcm subdomain isteklerini tek hedefe y\u00f6nlendirir.<\/li><\/ul><p class=\"wp-block-paragraph\">CNAME kullan\u0131rken bir k\u0131s\u0131t vard\u0131r: ayn\u0131 isim \u00fczerinde CNAME ile ba\u015fka kay\u0131t t\u00fcrleri bir arada bulunamaz. Yani blog i\u00e7in CNAME tan\u0131mlad\u0131ysan\u0131z ayn\u0131 isme ayr\u0131ca A veya MX kayd\u0131 ekleyemezsiniz.<\/p><p class=\"wp-block-paragraph\">TTL de\u011feri kayd\u0131n ne kadar s\u00fcre \u00f6nbellekte tutulaca\u011f\u0131n\u0131 belirler. Genel kullan\u0131mda 3600 saniye (1 saat) uygundur. Sunucu ta\u015f\u0131ma planl\u0131yorsan\u0131z, ge\u00e7i\u015ften birka\u00e7 saat \u00f6nce TTL&#8217;i 300 saniyeye d\u00fc\u015f\u00fcr\u00fcn; b\u00f6ylece de\u011fi\u015fiklik daha h\u0131zl\u0131 yay\u0131l\u0131r. Alan ad\u0131n\u0131z\u0131n nameserver&#8217;lar\u0131 harici bir DNS servisindeyse kayd\u0131 cPanel&#8217;de de\u011fil, o servisin panelinde eklemeniz gerekir.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Subdomain_baska_bir_adrese_nasil_yonlendirilir\"><\/span>Subdomain ba\u015fka bir adrese nas\u0131l y\u00f6nlendirilir?<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">Subdomain y\u00f6nlendirmesi DNS katman\u0131nda de\u011fil, HTTP katman\u0131nda yap\u0131l\u0131r. DNS sadece adresin hangi sunucuya gidece\u011fini \u00e7\u00f6zer; y\u00f6nlendirme karar\u0131n\u0131 web sunucusu verir. Bu nedenle \u00f6nce subdomain&#8217;in DNS kayd\u0131 \u00e7al\u0131\u015f\u0131r durumda olmal\u0131d\u0131r.<\/p><p class=\"wp-block-paragraph\">cPanel&#8217;de en pratik yol <strong>Redirects<\/strong> b\u00f6l\u00fcm\u00fcd\u00fcr. Buradan subdomain&#8217;i se\u00e7er, hedef adresi yazar ve y\u00f6nlendirme tipini belirlersiniz. Kal\u0131c\u0131 ta\u015f\u0131ma i\u00e7in 301, ge\u00e7ici durumlar i\u00e7in 302 kullan\u0131l\u0131r. 301 y\u00f6nlendirmesi taray\u0131c\u0131 taraf\u0131ndan \u00f6nbelle\u011fe al\u0131n\u0131r, bu y\u00fczden test a\u015famas\u0131nda 302 tercih edilir.<\/p><p class=\"wp-block-paragraph\">Y\u00f6nlendirmeyi kurduktan sonra curl -I komutuyla d\u00f6nen durum kodunu kontrol edin. Yan\u0131tta 301 veya 302 sat\u0131r\u0131n\u0131 ve do\u011fru Location ba\u015fl\u0131\u011f\u0131n\u0131 g\u00f6rmeniz gerekir.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Subdomain_SSL_sertifikasi_ile_korunur_mu\"><\/span>Subdomain SSL sertifikas\u0131 ile korunur mu?<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">Evet, subdomain SSL sertifikas\u0131yla korunur; ancak ana alan ad\u0131n\u0131n sertifikas\u0131 subdomain&#8217;i otomatik kapsamaz. ornek.com i\u00e7in al\u0131nan tek alan adl\u0131 bir sertifika, blog.ornek.com adresini do\u011frulamaz. Taray\u0131c\u0131 bu durumda sertifika uyar\u0131s\u0131 g\u00f6sterir.<\/p><p class=\"wp-block-paragraph\">\u00dc\u00e7 \u00e7\u00f6z\u00fcm vard\u0131r. Birincisi, her subdomain i\u00e7in ayr\u0131 sertifika almakt\u0131r. \u0130kincisi, sertifikan\u0131n SAN alan\u0131na ilgili subdomain&#8217;i eklemektir. \u00dc\u00e7\u00fcnc\u00fcs\u00fc wildcard sertifikad\u0131r; *.ornek.com bi\u00e7iminde tan\u0131mlan\u0131r ve tek seviyedeki t\u00fcm subdomain&#8217;leri kapsar.<\/p><p class=\"wp-block-paragraph\">Wildcard sertifikan\u0131n \u00f6nemli bir s\u0131n\u0131r\u0131 vard\u0131r: sadece bir seviye kapsar. *.ornek.com sertifikas\u0131 blog.ornek.com&#8217;u korur, ancak test.blog.ornek.com&#8217;u korumaz. Ayr\u0131ca wildcard sertifika al\u0131rken DNS tabanl\u0131 do\u011frulama (DNS-01) yapman\u0131z istenir.<\/p><p class=\"wp-block-paragraph\">cPanel&#8217;deki AutoSSL \u00f6zelli\u011fi, yeni olu\u015fturdu\u011funuz subdomain&#8217;ler i\u00e7in \u00fccretsiz sertifikalar\u0131 genellikle otomatik kurar. Let&#8217;s Encrypt sertifikalar\u0131n\u0131n ge\u00e7erlilik s\u00fcresi 90 g\u00fcnd\u00fcr ve yenileme otomatik \u00e7al\u0131\u015f\u0131r. Sertifika kurulduktan sonra sayfa i\u00e7indeki http:\/\/ ile ba\u015flayan g\u00f6rsel ve script ba\u011flant\u0131lar\u0131n\u0131 da g\u00fcncelleyin; aksi halde kar\u0131\u015f\u0131k i\u00e7erik (mixed content) uyar\u0131s\u0131 al\u0131rs\u0131n\u0131z.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E2%80%9CSubdomain_already_exists%E2%80%9D_hatasi_neden_alinir\"><\/span>&#8220;Subdomain already exists&#8221; hatas\u0131 neden al\u0131n\u0131r?<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">Bu hata, olu\u015fturmak istedi\u011finiz subdomain ad\u0131n\u0131n sunucuda zaten tan\u0131ml\u0131 oldu\u011funu g\u00f6sterir. Kay\u0131t g\u00f6r\u00fcn\u00fcrde silinmi\u015f olsa bile DNS b\u00f6lgesinde veya Apache yap\u0131land\u0131rmas\u0131nda bir iz kalm\u0131\u015f olabilir.<\/p><p class=\"wp-block-paragraph\">En s\u0131k g\u00f6r\u00fclen nedenler \u015funlard\u0131r:<\/p><ul class=\"wp-block-list\"><li>Ayn\u0131 subdomain daha \u00f6nce olu\u015fturulmu\u015f ve Domains listesinde duruyor.<\/li><li>Ayn\u0131 ad addon domain veya park edilmi\u015f alan ad\u0131 olarak tan\u0131mlanm\u0131\u015f.<\/li><li>DNS b\u00f6lgesinde ayn\u0131 isimde bir A veya CNAME kayd\u0131 mevcut.<\/li><li>Subdomain ayn\u0131 sunucudaki ba\u015fka bir cPanel hesab\u0131na tan\u0131ml\u0131.<\/li><li>\u00d6nceki silme i\u015flemi yar\u0131m kalm\u0131\u015f; kay\u0131t Apache yap\u0131land\u0131rmas\u0131nda kalm\u0131\u015f.<\/li><\/ul><p class=\"wp-block-paragraph\">Kontrol\u00fc \u015fu s\u0131rayla yap\u0131n: \u00f6nce Domains listesine bak\u0131n, sonra <strong>Zone Editor<\/strong> \u00fczerinden ilgili ismi aray\u0131n. Buldu\u011funuz art\u0131k kayd\u0131 silip i\u015flemi tekrarlay\u0131n. Subdomain ba\u015fka bir hesaba tan\u0131ml\u0131ysa bunu yaln\u0131zca sunucu y\u00f6neticisi kald\u0131rabilir; bu durumda hosting sa\u011flay\u0131c\u0131n\u0131z\u0131n destek ekibine kayd\u0131n sunucu genelinde kontrol edilmesi i\u00e7in talep a\u00e7\u0131n.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ucretsiz_subdomain_kullanmak_mantikli_mi\"><\/span>\u00dccretsiz subdomain kullanmak mant\u0131kl\u0131 m\u0131?<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">\u00dccretsiz subdomain, ba\u015fka birinin alan ad\u0131 alt\u0131nda size verilen bir adrestir; \u00f6rne\u011fin siteniz.platform.com. K\u0131sa vadeli deneme i\u00e7in i\u015fe yarar, ticari bir proje i\u00e7in uygun de\u011fildir.<\/p><p class=\"wp-block-paragraph\">Temel sorun m\u00fclkiyettir. Adres size ait olmad\u0131\u011f\u0131 i\u00e7in ta\u015f\u0131yamazs\u0131n\u0131z, satamazs\u0131n\u0131z ve sa\u011flay\u0131c\u0131 hizmeti kapatt\u0131\u011f\u0131nda adresi kaybedersiniz. Kurdu\u011funuz otorite ana alan ad\u0131na yaz\u0131l\u0131r. Ayr\u0131ca kurumsal e-posta adresi olu\u015fturamaz, DNS kay\u0131tlar\u0131 \u00fczerinde tam kontrol sahibi olamazs\u0131n\u0131z.<\/p><p class=\"wp-block-paragraph\">Buna kar\u015f\u0131l\u0131k kendi alan ad\u0131n\u0131z alt\u0131nda a\u00e7t\u0131\u011f\u0131n\u0131z subdomain&#8217;ler tamamen sizindir ve \u00e7o\u011fu hosting paketinde ek \u00fccret gerektirmez. Kendi alan ad\u0131n\u0131zda a\u00e7t\u0131\u011f\u0131n\u0131z bir subdomain&#8217;e site kuracaksan\u0131z, <a href=\"https:\/\/verimin.com.tr\/blog\/wordpress-subdomain\/\">WordPress&#8217;te subdomain kurulumu ad\u0131mlar\u0131n\u0131<\/a> inceleyerek dosya dizini ve veritaban\u0131 yap\u0131land\u0131rmas\u0131n\u0131 do\u011fru kurabilirsiniz.<\/p>\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1672\" height=\"941\" src=\"https:\/\/verimin.com.tr\/blog\/wp-content\/uploads\/2026\/07\/subdomain-seo-etkisi.avif\" alt=\"Alt klas\u00f6rde toplanan sinyaller ile subdomain\u2019lere da\u011f\u0131lan sinyallerin kar\u015f\u0131la\u015ft\u0131rmas\u0131\" class=\"wp-image-1840\" srcset=\"https:\/\/verimin.com.tr\/blog\/wp-content\/uploads\/2026\/07\/subdomain-seo-etkisi.avif 1672w, https:\/\/verimin.com.tr\/blog\/wp-content\/uploads\/2026\/07\/subdomain-seo-etkisi-300x169.avif 300w, https:\/\/verimin.com.tr\/blog\/wp-content\/uploads\/2026\/07\/subdomain-seo-etkisi-1024x576.avif 1024w, https:\/\/verimin.com.tr\/blog\/wp-content\/uploads\/2026\/07\/subdomain-seo-etkisi-768x432.avif 768w, https:\/\/verimin.com.tr\/blog\/wp-content\/uploads\/2026\/07\/subdomain-seo-etkisi-1536x864.avif 1536w, https:\/\/verimin.com.tr\/blog\/wp-content\/uploads\/2026\/07\/subdomain-seo-etkisi-195x110.avif 195w, https:\/\/verimin.com.tr\/blog\/wp-content\/uploads\/2026\/07\/subdomain-seo-etkisi-390x220.avif 390w, https:\/\/verimin.com.tr\/blog\/wp-content\/uploads\/2026\/07\/subdomain-seo-etkisi-1170x658.avif 1170w\" sizes=\"auto, (max-width: 1672px) 100vw, 1672px\" \/><\/figure>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Subdomain_SEOyu_nasil_etkiler\"><\/span>Subdomain SEO&#8217;yu nas\u0131l etkiler?<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">Subdomain, arama motorlar\u0131 taraf\u0131ndan ana alan ad\u0131yla ili\u015fkili ama ayr\u0131 taranan bir host olarak de\u011ferlendirilir. Ana sitenin sinyalleri subdomain&#8217;e birebir aktar\u0131lmaz; bu y\u00fczden her subdomain kendi i\u00e7erik ve ba\u011flant\u0131 ge\u00e7mi\u015fini olu\u015fturur.<\/p><p class=\"wp-block-paragraph\">Bunun \u00fc\u00e7 pratik sonucu vard\u0131r. Birincisi, robots.txt dosyas\u0131 host bazl\u0131d\u0131r. blog.ornek.com i\u00e7in ayr\u0131 bir robots.txt dosyas\u0131 sunman\u0131z gerekir. \u0130kincisi, her subdomain kendi site haritas\u0131na ihtiya\u00e7 duyar. \u00dc\u00e7\u00fcnc\u00fcs\u00fc, Search Console&#8217;da URL \u00f6neki m\u00fclk\u00fc subdomain&#8217;leri kapsamaz; t\u00fcm alt adresleri tek yerden izlemek i\u00e7in alan ad\u0131 (domain) m\u00fclk\u00fc eklemeniz gerekir.<\/p><p class=\"wp-block-paragraph\">Karar verirken \u015fu \u00f6l\u00e7\u00fct\u00fc kullan\u0131n: i\u00e7erik ana sitenin konu b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc besliyorsa alt klas\u00f6r daha verimlidir, \u00e7\u00fcnk\u00fc t\u00fcm sinyaller tek host alt\u0131nda toplan\u0131r. \u0130\u00e7erik ayr\u0131 bir kitleye hitap ediyor veya farkl\u0131 bir teknoloji \u00fczerinde \u00e7al\u0131\u015f\u0131yorsa subdomain do\u011fru se\u00e7imdir.<\/p><p class=\"wp-block-paragraph\">En s\u0131k yap\u0131lan hata test ortamlar\u0131n\u0131n indekslenmesidir. staging.ornek.com \u00fczerindeki kopya i\u00e7erik indekslenirse ana sitenizle \u00e7ak\u0131\u015f\u0131r. Bu subdomain&#8217;i sunucu seviyesinde parola korumas\u0131na al\u0131n; sadece noindex etiketine g\u00fcvenmeyin.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ozet\"><\/span>\u00d6zet<span class=\"ez-toc-section-end\"><\/span><\/h2><ul class=\"wp-block-list\"><li>Subdomain, alan ad\u0131n\u0131z\u0131n \u00f6n\u00fcne eklenen \u00fc\u00e7\u00fcnc\u00fc seviye adres birimidir ve ayr\u0131 bir host gibi davran\u0131r.<\/li><li>Ayr\u0131 DNS kayd\u0131 (A, AAAA veya CNAME) gerektirir; y\u00f6nlendirme ise DNS&#8217;te de\u011fil HTTP katman\u0131nda yap\u0131l\u0131r.<\/li><li>Ana alan ad\u0131n\u0131n SSL sertifikas\u0131 subdomain&#8217;i kapsamaz; SAN veya wildcard sertifika gerekir, wildcard yaln\u0131zca tek seviye korur.<\/li><li>&#8220;Subdomain already exists&#8221; hatas\u0131 genellikle art\u0131k kalm\u0131\u015f DNS veya yap\u0131land\u0131rma kayd\u0131ndan kaynaklan\u0131r.<\/li><li>\u0130\u00e7erik ana konuyu destekliyorsa alt klas\u00f6r, teknik veya kitle olarak ayr\u0131\u015f\u0131yorsa subdomain tercih edin; test subdomain&#8217;lerini mutlaka parola ile koruyun.<\/li><\/ul>","protected":false},"excerpt":{"rendered":"<p>Subdomain nedir, alt alan ad\u0131 nas\u0131l olu\u015fturulur? cPanel ad\u0131mlar\u0131, DNS kayd\u0131, SSL, y\u00f6nlendirme ve SEO etkisi tek rehberde anlat\u0131l\u0131yor.<\/p>\n","protected":false},"author":1,"featured_media":1839,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1718","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-genel"],"_links":{"self":[{"href":"https:\/\/verimin.com.tr\/blog\/wp-json\/wp\/v2\/posts\/1718","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/verimin.com.tr\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/verimin.com.tr\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/verimin.com.tr\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/verimin.com.tr\/blog\/wp-json\/wp\/v2\/comments?post=1718"}],"version-history":[{"count":4,"href":"https:\/\/verimin.com.tr\/blog\/wp-json\/wp\/v2\/posts\/1718\/revisions"}],"predecessor-version":[{"id":1843,"href":"https:\/\/verimin.com.tr\/blog\/wp-json\/wp\/v2\/posts\/1718\/revisions\/1843"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/verimin.com.tr\/blog\/wp-json\/wp\/v2\/media\/1839"}],"wp:attachment":[{"href":"https:\/\/verimin.com.tr\/blog\/wp-json\/wp\/v2\/media?parent=1718"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/verimin.com.tr\/blog\/wp-json\/wp\/v2\/categories?post=1718"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/verimin.com.tr\/blog\/wp-json\/wp\/v2\/tags?post=1718"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}