{"id":3473,"date":"2025-03-20T07:50:00","date_gmt":"2025-03-20T07:50:00","guid":{"rendered":"https:\/\/www.it-connect.tech\/?p=3473"},"modified":"2025-03-20T12:29:03","modified_gmt":"2025-03-20T12:29:03","slug":"el-comando-nslookup-para-principiantes","status":"publish","type":"post","link":"https:\/\/www.it-connect.tech\/es\/el-comando-nslookup-para-principiantes\/","title":{"rendered":"El comando nslookup para principiantes"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">I. Introducci\u00f3n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>En este tutorial, vamos a aprender a utilizar el comando nslookup, ya que es uno de los comandos esenciales que necesitas conocer como administrador de sistemas y redes. <\/strong>As\u00ed como necesitas conocer los comandos ping, tracert, ipconfig y otros... necesitas conocer <strong>nslookup<\/strong>. Tambi\u00e9n veremos que el comando PowerShell<strong>\"Resolve-DnsName<\/strong>\" es realmente interesante. <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/youtu.be\/H5TntH5n_kQ\" target=\"_blank\" rel=\"noopener nofollow\" title=\"\">Ver el v\u00eddeo en YouTube (versi\u00f3n francesa)<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">II. \u00bfQu\u00e9 es el comando nslookup?   <\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">El comando <strong>nslookup<\/strong> <strong>est\u00e1 integrado en todos los sistemas operativos Windows<\/strong>, ya sea Windows <em>desktop <\/em>o Windows Server. F\u00e1cil de usar, es muy \u00fatil para <strong>resolver problemas de DNS<\/strong> o para <strong>comprobar r\u00e1pidamente<\/strong> el estado de un registro DNS.   <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tanto si se trata de un problema con <strong>un servidor DNS local<\/strong> (la zona de Active Directory, por ejemplo) como con una<strong> zona DNS p\u00fablica<\/strong>, puedes utilizar nslookup para <strong>obtener informaci\u00f3n sobre los registros DNS <\/strong>y probar la resoluci\u00f3n de nombres en tu m\u00e1quina local.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Por ejemplo, puedes comprobar la direcci\u00f3n IP asociada al nombre de dominio \"it-connect.fr\", comprobar el servidor de correo de un dominio (leyendo el registro MX) o comprobar que el nuevo servidor que acabas de crear est\u00e1 registrado en la zona DNS de tu dominio Active Directory. <strong>Hay muchos ejemplos, pero nslookup es la herramienta que puede ayudarte si el problema est\u00e1 relacionado con DNS.<\/strong> Tambi\u00e9n podemos utilizar nslookup para <strong>verificar un cambio realizado en una zona DNS<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La herramienta nslookup tambi\u00e9n est\u00e1 disponible para Linux, aunque tambi\u00e9n existe la herramienta <em>dig<\/em>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">III. \u00bfC\u00f3mo se utiliza nslookup?   <\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A partir de ahora, vamos a aprender a utilizar el comando nslookup con varios ejemplos pr\u00e1cticos. Antes de empezar, ten en cuenta que el comando nslookup se basa en la siguiente sintaxis:   <\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>nslookup &lt;opciones> &lt;nombre de dominio o direcci\u00f3n IP><\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">A. Resolver un nombre de dominio<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Empecemos por un caso de uso muy sencillo, pero frecuente: resolver un nombre de dominio para obtener la direcci\u00f3n IP correspondiente. Tomemos el ejemplo del nombre de dominio \"google.fr\":   <\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>nslookup <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">google.fr<\/mark><\/strong><\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Nslookup devuelve dos direcciones IP asociadas al nombre de dominio \"google.fr\": <strong>una direcci\u00f3n IPv6 y una direcci\u00f3n IPv4<\/strong>. En un dominio como el de Google,<strong> es probable que el resultado var\u00ede de una m\u00e1quina a otra<\/strong>, ya que Google no utiliza una \u00fanica direcci\u00f3n IP. En cambio, si realizas la prueba en tu dominio personal, deber\u00e1s obtener tu direcci\u00f3n IP p\u00fablica (por ejemplo, la direcci\u00f3n IP p\u00fablica de tu servidor VPS, servidor dedicado, box, etc.).  <\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/www.it-connect.tech\/wp-content\/uploads\/2025\/02\/Exemple-nslookup-nom-de-domaine.png\" alt=\"Ejemplo nslookup nombre de dominio\" class=\"wp-image-69532\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Podemos ver que el resultado del comando nslookup comienza con dos datos: <strong>Servidor <\/strong>y <strong>Direcci\u00f3n<\/strong>, que hace referencia a <strong>\"1.1.1.1<\/strong>\". De hecho, este es el servidor DNS solicitado por nslookup para resolver el nombre \"google.fr\". La herramienta utiliz\u00f3 este servidor DNS porque est\u00e1 definido como el<strong> servidor DNS preferido en mi interfaz de red<\/strong> utilizada para acceder a Internet:<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/www.it-connect.tech\/wp-content\/uploads\/2025\/02\/Nslookup-DNS-utilise-pour-les-requetes.jpg\" alt=\"Nslookup DNS utilizado para las consultas\" class=\"wp-image-69531\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Veremos m\u00e1s adelante que puede solicitar el servidor DNS de su elecci\u00f3n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">B. Resoluci\u00f3n de una direcci\u00f3n IP<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nslookup tambi\u00e9n puede utilizar una <strong>zona de b\u00fasqueda inversa <\/strong>para obtener el nombre de host asociado a una direcci\u00f3n IP. Tomemos el ejemplo de la direcci\u00f3n IP <strong>\"9.9.9.9<\/strong>\":<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>nslookup <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">9.9.9.9<\/mark><\/strong><\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Podemos ver que est\u00e1 asociado con el nombre de host<strong>\"dns9.quad9.net<\/strong>\".<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/www.it-connect.tech\/wp-content\/uploads\/2025\/02\/Exemple-nslookup-adresse-IP.png\" alt=\"Ejemplo nslookup Direcci\u00f3n IP\" class=\"wp-image-69530\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">C. \u00bfQu\u00e9 servidor DNS es autoritativo en un dominio?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Los registros SOA (<em>Start of Authority<\/em>) y NS<\/strong> proporcionan informaci\u00f3n importante sobre un dominio, incluyendo el servidor DNS con autoridad sobre la zona, pero tambi\u00e9n el contacto, TTL por defecto, etc...<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>nslookup -type=soa <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">it-connect.tech<\/mark><\/strong><\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Podemos ver el valor <strong>\"primary name server<\/strong>\" asociado a <strong>\"dns104.ovh.net<\/strong>\": lo m\u00e1s probable es que OVHcloud sea el registrador de este dominio.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/www.it-connect.tech\/wp-content\/uploads\/2025\/02\/Exemple-nslookup-SOA-domaine.png\" alt=\"\" class=\"wp-image-69533\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">  Se puede<strong> obtener<\/strong> <strong> informaci\u00f3n similar<\/strong> leyendo el registro NS:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>nslookup -type=ns <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">it-connect.tech<\/mark><\/strong><\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Devuelve :<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>it-connect.tech nameserver = dns104.ovh.net<br>it-connect.tech nameserver = ns104.ovh.net<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">D. Ver el registro MX de un dominio<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Si desea investigar la parte de mensajer\u00eda de un dominio, debe consultar el registro de tipo MX del dominio. Basta con especificar el tipo MX.   <\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>nslookup -type=mx <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">it-connect.tech<\/mark><\/strong><\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Proporciona informaci\u00f3n sobre los servidores de correo de este dominio:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>it-connect.tech MX preference = 0, mail exchanger = itconnect-tech0e.mail.protection.outlook.com<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/www.it-connect.tech\/wp-content\/uploads\/2025\/02\/Exemple-nslookup-enregistrement-MX-mail-800x133.png\" alt=\"\" class=\"wp-image-69534\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Una respuesta como la anterior est\u00e1 asociada a un dominio vinculado a un tenant de Microsoft 365.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">E. Listar los registros TXT de un dominio<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Para listar los registros de recursos de un dominio, es necesario consultar los registros de tipo \"TXT\". Del mismo modo que para NS, SOA o CNAME, basta con especificar el tipo del siguiente modo:   <\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>nslookup -type=txt <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">google.com<\/mark><\/strong><\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">F. Listar registros de zona DNS con nslookup<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nslookup no es la mejor herramienta para enumerar el contenido de una zona DNS. Hay herramientas m\u00e1s adecuadas, como DNSEnum o Dig, pero a\u00fan as\u00ed puede devolver una gran cantidad de informaci\u00f3n. Hemos visto que se puede especificar el tipo de registro. El tipo \"any\" le permite devolver registros de distintos tipos:     <\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>nslookup -type=any <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">google.com<\/mark><\/strong><\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Algunos servidores DNS, como \"1.1.1.1\", no admiten estas peticiones.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>*** one.one.one.one ne parvient pas \u00e0 trouver google.com : Not implemented<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">En este caso, podemos <strong>solicitar otro servidor DNS<\/strong>. Pero, \u00bfc\u00f3mo hacerlo sin modificar la configuraci\u00f3n DNS de la interfaz de red de la m\u00e1quina? Basta con especificar el servidor DNS a utilizar al final de la solicitud. Por ejemplo, para solicitar \"8.8.8.8\" en lugar del servidor DNS de la interfaz de red, utilizaremos esta sintaxis :     <\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>nslookup -type=any <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">google.com<\/mark><\/strong> 8.8.8.8\nnslookup -type=any <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">it-connect.tech<\/mark><\/strong> 8.8.8.8<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Podemos ver que la salida es m\u00e1s completa:<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/www.it-connect.tech\/wp-content\/uploads\/2025\/02\/Exemple-nslookup-enumeration-type-any-dns-800x401.png\" alt=\"\" class=\"wp-image-69539\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">G. Listar los controladores de dominio de Active Directory con nslookup<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Por \u00faltimo, veamos <strong>c\u00f3mo listar todos los controladores de dominio de un dominio de Active Directory con nslookup...<\/strong> Si falta un controlador de dominio en la lista devuelta, \u00a1hay un problema!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Podemos empezar con una simple consulta:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>nslookup <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">it-connect.local<\/mark><\/strong><\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Este comando devolver\u00e1<strong> las direcciones IP de todos sus controladores de<\/strong> dominio para este dominio.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para ir m\u00e1s all\u00e1 y obtener informaci\u00f3n m\u00e1s precisa, en particular con los nombres, es necesario consultar <strong>un registro SRV m\u00e1s espec\u00edfico<\/strong> almacenado en la <strong>zona DNS de su dominio de Active Directory<\/strong>:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>nslookup -type=SRV _ldap._tcp.<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">it-connect.local<\/mark><\/strong><\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">El resultado de estos dos pedidos puede verse en la imagen siguiente:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.it-connect.tech\/wp-content\/uploads\/2025\/02\/Exemple-nslookup-lister-controleur-de-domaine-AD.png\" alt=\"\" class=\"wp-image-69535\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">IV. Resolve-DnsName, el equivalente PowerShell de nslookup   <\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">El comando PowerShell <strong>\"Resolve-DnsName<\/strong>\" tambi\u00e9n est\u00e1 disponible en Windows. Al igual que nslookup, permite realizar la resoluci\u00f3n de nombres como acabamos de hacer. Como es un comando PowerShell, abre otras posibilidades, incluida la posible integraci\u00f3n dentro de scripts. Casi se podr\u00eda decir que <strong>es un nslookup moderno<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">He aqu\u00ed algunos ejemplos...<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Resolver el nombre de host it-connect.fr solicitando al servidor DNS 8.8.8.8<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>Resolve-DnsName <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">it-connect.fr<\/mark><\/strong> -Server 8.8.8.8<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/www.it-connect.tech\/wp-content\/uploads\/2025\/02\/Exemple-Resolve-DnsName-A.png\" alt=\"\" class=\"wp-image-69542\"\/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Obtener informaci\u00f3n MX (mensajer\u00eda) del dominio it-connect.tech<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>Resolve-DnsName <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">it-connect.tech <\/mark><\/strong>-Type MX<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Resolver el nombre de host it-connect.tech utilizando s\u00f3lo los datos de la cach\u00e9 local de DNS<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>Resolve-DnsName <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">it-connect.tech<\/mark><\/strong> -CacheOnly<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Resolver varios nombres de host con un solo comando, centr\u00e1ndose en los registros IPv4 (tipo A)<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>\"google.com\", \"google.fr\" | Resolve-DnsName -Type A<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.it-connect.tech\/wp-content\/uploads\/2025\/02\/Resolve-DnsName-resoudre-plusieurs-noms-de-domaine.png\" alt=\"\" class=\"wp-image-69543\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Por cierto, \u00a1se puede utilizar PowerShell para solicitar nslookup! Si queremos hacer el equivalente del comando anterior, tenemos que ejecutar :   <\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\"google.com\", \"google.fr\" | Foreach{ nslookup -type=A $_ }<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">El comando<strong> Resolve-DnsName <\/strong>tambi\u00e9n es muy pr\u00e1ctico y representa <strong>una alternativa seria a nslookup<\/strong>, especialmente si te gusta el scripting de PowerShell. Tiene muchas opciones.   <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/learn.microsoft.com\/en-us\/powershell\/module\/dnsclient\/resolve-dnsname?view=windowsserver2022-ps?WT.mc_id=AZ-MVP-5004580\" target=\"_blank\" rel=\"noopener nofollow\" title=\"\">Microsoft Learn - Resolver-DnsName<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">V. Conclusi\u00f3n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Con este tutorial, \u00a1podr\u00e1s <strong>diagnosticar f\u00e1cilmente tus problemas de resoluci\u00f3n de nombres <\/strong>o <strong>cambios en tus zonas DNS<\/strong>! Tanto si utiliza <strong>nslookup <\/strong>como <strong>Resolve-DnsName<\/strong> en PowerShell, tendr\u00e1 suficientes ejemplos para ser aut\u00f3nomo en el uso de estos dos comandos.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>En este tutorial, utilizaremos una herramienta indispensable para diagnosticar problemas de DNS: nslookup, as\u00ed como el comando Resolve-DnsName.<\/p>\n","protected":false},"author":2,"featured_media":3476,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27,27],"tags":[],"class_list":["post-3473","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-windows-server"],"acf":{"hreflang_fr":"https:\/\/www.it-connect.fr\/la-commande-nslookup-pour-les-debutants\/"},"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 4.9.9 - aioseo.com -->\n\t<meta name=\"description\" content=\"En este tutorial, 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