b"\n_START_ARTICLE_\nTers DNS\n_START_PARAGRAPH_\nTers DNS sorgusu veya ters DNS \xc3\xa7\xc3\xb6z\xc3\xbcmlemesi, bilgisayar a\xc4\x9flar\xc4\xb1nda, internette DNS kullan\xc4\xb1larak IP adresi ile ili\xc5\x9fkili alan ad\xc4\xb1 tespitidir._NEWLINE_Bilgisayar a\xc4\x9flar\xc4\xb1nda DNS kullan\xc4\xb1larak alan ad\xc4\xb1 ile ili\xc5\x9fkili IP adresini tespit etme i\xc5\x9flemi ileri DNS \xc3\xa7\xc3\xb6z\xc3\xbcmlemesi olarak bilinir. Ters DNS sorgusu ise, IP adresi \xc3\xbczerinden belirlenmi\xc5\x9f alan ad\xc4\xb1n\xc4\xb1n \xc3\xa7\xc3\xb6z\xc3\xbcmlenmesidir._NEWLINE_Ters DNS veritaban\xc4\xb1 internetin k\xc3\xb6kl\xc3\xbc Adres ve Y\xc3\xb6nlendirme Parametre Alan\xc4\xb1 ( arpa )' d\xc4\xb1r. IPv4 in-addr.arpa alan\xc4\xb1n\xc4\xb1 kullan\xc4\xb1r. IPv6 ise ip6.arpa alan\xc4\xb1n\xc4\xb1 kullan\xc4\xb1r. Ters \xc3\xa7\xc3\xb6z\xc3\xbcmleme i\xc5\x9fleminde bir IP adresi DNS kay\xc4\xb1t tipi i\xc5\x9faret\xc3\xa7isi(PTR record) ' ni kullan\xc4\xb1r._NEWLINE_RFC 1033, RFC 1912 Section 2.1 de de belirtildi\xc4\x9fi \xc3\xbczere internette her ula\xc5\x9f\xc4\xb1labilir makinan\xc4\xb1n bir ad\xc4\xb1 olmal\xc4\xb1d\xc4\xb1r.\n_START_SECTION_\nIPv4' te Ters \xc3\x87\xc3\xb6z\xc3\xbcmleme\n_START_PARAGRAPH_\nIPv4 adreslerinde ters DNS sorgusu, in-addr.arpa \xc3\xb6zel alan\xc4\xb1nda ters IN-ADDR girdisi kullan\xc4\xb1r. Bu alanda IPv4 adresi zincirleme 4 desimal sayi ile noktalarla ayr\xc4\xb1lm\xc4\xb1\xc5\x9f olarak temsil edilir. 32 bit IPv4 adresi 8 bitlik 4 k\xc4\xb1sma ayr\xc4\xb1l\xc4\xb1r ve her 8 bitlik k\xc4\xb1s\xc4\xb1m desimale \xc3\xa7evrilerek 4 desimal say\xc4\xb1 elde edilir._NEWLINE_\xc3\x96rne\xc4\x9fin, mail.example.com i\xc3\xa7in bir kay\xc4\xb1t olsun. Bu kay\xc4\xb1t 192.0.2.5 IP adresine i\xc5\x9faret etsin. Ters DNS veritaban\xc4\xb1nda bu IP adersinin alan ad\xc4\xb1 5.2.0.192.in-addr.arpa \xc5\x9feklinde tutulur. Geri i\xc5\x9faret etmesi i\xc3\xa7in de makina ad\xc4\xb1 mail.example.com olarak tutulur.\n_START_SECTION_\nIPv6' da Ters \xc3\x87\xc3\xb6z\xc3\xbcmleme\n_START_PARAGRAPH_\nIPv6 adreslerinde ters DNS sorgusu i\xc3\xa7in ip6.arpa \xc3\xb6zel alan\xc4\xb1 kullan\xc4\xb1l\xc4\xb1r. Bir IPv6 adresi bu alanda hexadecimal olarak temsil edilen alt alanlara g\xc3\xb6re tersten yaz\xc4\xb1lm\xc4\xb1\xc5\x9f bir isim olarak g\xc3\xb6r\xc3\xbcn\xc3\xbcr. \xc3\x96rne\xc4\x9fin, 2001:db8::567:89ab IPv6 adresine tekab\xc3\xbcl eden i\xc5\x9faret\xc3\xa7i alan ad\xc4\xb1 b.a.9.8.7.6.5.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.b.d.0.1.0.0.2.ip6.arpa' d\xc4\xb1r."