您好，我想知道是否有一种很好的方法可以找出特定域的年龄。
但我想找到一种方法来以编程方式要求 DNS 使用 php 而不是从在线工具检查域年龄。
我正在互联网上搜索以了解 google 如何检查我的域名年龄和其他 SEO 工具。
对于必须具有特殊权限才能询问域年龄的域，此信息是否为私有？如果是的话？谷歌怎么知道我的域名年龄？没有人问我的域名年龄.. 他们怎么知道？
【问题讨论】：
标签： php networking dns
$ whois stackoverflow.com
Whois Server Version 2.0
Domain names in the .com and .net domains can now be registered
with many different competing registrars. Go to http://www.internic.net
for detailed information.
Domain Name: STACKOVERFLOW.COM
Registrar: GODADDY.COM, INC.
Whois Server: whois.godaddy.com
Referral URL: http://registrar.godaddy.com
Name Server: NS1.SERVERFAULT.COM
Name Server: NS2.SERVERFAULT.COM
Name Server: NS3.SERVERFAULT.COM
Status: clientDeleteProhibited
Status: clientRenewProhibited
Status: clientTransferProhibited
Status: clientUpdateProhibited
Updated Date: 30-nov-2010
Creation Date: 26-dec-2003
Expiration Date: 26-dec-2014
[...]
【讨论】：
您是在寻找 php 脚本还是网络服务？
如果是网络服务，请查看此bulk domain age checker 工具，它可以让您找出域注册日期和到期日期以及注册商名称。您可以一次批量检查 500 个域。
希望有帮助
【讨论】：
大多数 TLD 的注册日期可通过 WHOIS 获得，并且不在 DNS 中。
对于 com/net 域，您可以查看 whois.internic.net 以获取“创建日期”。对于大多数国家 TLD，您可以通过“country-code.whois-servers.net”的 DNS 查询找到 WHOIS 服务器。大多数 BSD 和 Linux 变体中的命令行 WHOIS 客户端会自动查找合适的 WHOIS 服务器。
请注意，每个注册商都有自己的格式来呈现此信息，并且大多数注册商都在其 WHOIS 服务器上实施了控制，以限制来自同一 IP 地址的频繁请求。
看看PHPWhois。
【讨论】：
使用这个 PHP 脚本检查域名年龄，在这里你可以找到工作 domain age checker
class DomainAge{
private $WHOIS_SERVERS=array(
"com"=>array("whois.verisign-grs.com","/Creation Date:(.*)/"),
"net"=>array("whois.verisign-grs.com","/Creation Date:(.*)/"),
"org"=>array("whois.pir.org","/Created On:(.*)/"),
"info"=>array("whois.afilias.info","/Created On:(.*)/"),
"biz"=>array("whois.neulevel.biz","/Domain Registration Date:(.*)/"),
"us"=>array("whois.nic.us","/Domain Registration Date:(.*)/"),
"uk"=>array("whois.nic.uk","/Registered on:(.*)/"),
"ca"=>array("whois.cira.ca","/Creation date:(.*)/"),
"tel"=>array("whois.nic.tel","/Domain Registration Date:(.*)/"),
"ie"=>array("whois.iedr.ie","/registration:(.*)/"),
"it"=>array("whois.nic.it","/Created:(.*)/"),
"cc"=>array("whois.nic.cc","/Creation Date:(.*)/"),
"ws"=>array("whois.nic.ws","/Domain Created:(.*)/"),
"sc"=>array("whois2.afilias-grs.net","/Created On:(.*)/"),
"mobi"=>array("whois.dotmobiregistry.net","/Created On:(.*)/"),
"pro"=>array("whois.registrypro.pro","/Created On:(.*)/"),
"edu"=>array("whois.educause.net","/Domain record activated:(.*)/"),
"tv"=>array("whois.nic.tv","/Creation Date:(.*)/"),
"travel"=>array("whois.nic.travel","/Domain Registration Date:(.*)/"),
"in"=>array("whois.inregistry.net","/Created On:(.*)/"),
"me"=>array("whois.nic.me","/Domain Create Date:(.*)/"),
"cn"=>array("whois.cnnic.cn","/Registration Date:(.*)/"),
"asia"=>array("whois.nic.asia","/Domain Create Date:(.*)/"),
"ro"=>array("whois.rotld.ro","/Registered On:(.*)/"),
"aero"=> array("whois.aero","/Created On:(.*)/"),
"nu"=> array("whois.nic.nu","/created:(.*)/")
);
public function age($domain)
{
$domain = trim($domain);
if(substr(strtolower($domain), 0, 7) == "http://")
$domain = substr($domain, 7); // remove http:// if included
if(substr(strtolower($domain), 0, 4) == "www.")
$domain = substr($domain, 4);//remove www from domain
if(preg_match("/^([-a-z0-9]{2,100}).([a-z.]{2,8})$/i",$domain))
{
$domain_parts = explode(".", $domain);
$tld = strtolower(array_pop($domain_parts));
if(!$server=$this->WHOIS_SERVERS[$tld][0]) {
return false;
}
$res=$this->queryWhois($server,$domain);
if(preg_match($this->WHOIS_SERVERS[$tld][1],$res,$match))
{
date_default_timezone_set('UTC');
$time = time() - strtotime($match[1]);
$years = floor($time / 31556926);
$days = floor(($time % 31556926) / 86400);
if($years == "1") {$y= "1 year";
}
else
{
$y = $years . " years";
}
if($days == "1") {$d = "1 day";
}
else
{
$d = $days . " days";
}
return "$y, $d";
}
else
return false;
}
else
return false;
}
private function queryWhois($server,$domain)
{
$fp = @fsockopen($server, 43, $errno, $errstr, 20) or die("Socket Error "
. $errno . " - " . $errstr);
if($server=="whois.verisign-grs.com")
$domain="=".$domain;
fputs($fp, $domain . "rn");
$out = "";
while(!feof($fp)){
$out .= fgets($fp);
}
fclose($fp);
return $out;
}
}
【讨论】：
fputs($fp, $domain . "\r\n"); 然后效果很好！