checkdnsrr Check DNS records corresponding to a given Internet host name or IP address &reftitle.description; boolcheckdnsrr stringhost stringtype"MX" Searches DNS for records of type type corresponding to host. &reftitle.parameters; host host may either be the IP address in dotted-quad notation or the host name. type type may be any one of: A, MX, NS, SOA, PTR, CNAME, AAAA, A6, SRV, NAPTR, TXT or ANY. &reftitle.returnvalues; Returns &true; if any records are found; returns &false; if no records were found or if an error occurred. &reftitle.changelog; &Version; &Description; 5.3.0 This function is now available on Windows platforms. 5.2.4 TXT type was added. 5.0.0 AAAA type was added. &reftitle.notes; For compatibility with Windows before this was implemented, then try the PEAR class Net_DNS. &reftitle.seealso; dns_get_record getmxrr gethostbyaddr gethostbyname gethostbynamel the named(8) manual page