{"id":875,"date":"2017-11-09T19:27:30","date_gmt":"2017-11-10T00:27:30","guid":{"rendered":"https:\/\/blog.index.pe\/?p=875"},"modified":"2017-11-09T19:31:10","modified_gmt":"2017-11-10T00:31:10","slug":"que-es-whois","status":"publish","type":"post","link":"https:\/\/blog.index.pe\/en\/que-es-whois\/","title":{"rendered":"What is WHOIS?"},"content":{"rendered":"<p><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script><br \/>\n<ins class=\"adsbygoogle\" style=\"display: block;\" data-ad-format=\"fluid\" data-ad-layout-key=\"-fe+64+3o-l0+ql\" data-ad-client=\"ca-pub-7016851332009441\" data-ad-slot=\"9887643366\"><\/ins><br \/>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><br \/>\nIt is a request\/response based TCP protocol used to query a database to determine the owner of a domain name or IP address on the Internet. WHOIS queries have traditionally been performed using a command line interface, but today there are many web pages that allow you to perform these queries. These pages still rely internally on the WHOIS protocol to connect to a WHOIS server and make requests. Command line clients are still widely used by system administrators<\/p>\n<h2>Response Types<\/h2>\n<p>There are two ways to store information in a WHOIS server: &quot;thick&quot; and &quot;light&quot; mode. With the &quot;dense&quot; model, a WHOIS server stores all the information for a set of domains or IP&#039;s (with which this server is capable of responding to any query for .org domains, for example). With the &quot;light&quot; model, a WHOIS server stores the name of another WHOIS server that has full registrar data (as in the case of .com) and other basic data. To access all the data, a second query must be made to the server that has all the data. The &quot;light&quot; method is faster, as it only involves making a query. There is no standard in the WHOIS protocol to distinguish between these response types.<\/p>\n<h2>How to perform WHOIS queries<\/h2>\n<p><strong>1. Command line clients<\/strong><br \/>\nOriginally the only way to contact a WHOIS server was by using a command line client. In most cases it was on a Unix system. The WHOIS client is distributed as free software, although various commercial Unix implementations have their own versions (for example Sun Solaris 7).<br \/>\nA typical command line WHOIS client has options to tell it which server to query, with default WHOIS servers already set up.<br \/>\nThe GNU Project whois client, unlike other WHOIS clients, uses an external configuration file to determine which WHOIS server to make each query to. This allows you to quickly adapt to changes.<\/p>\n<p><strong>2. Web clients<\/strong><br \/>\nCurrently it is very common to perform queries through web pages, which are usually nothing more than a simple interface for the command line client \u2013 such as clients <a href=\"http:\/\/whois.andean.me\/\" target=\"_blank\" rel=\"noopener\">http:\/\/whois.andean.me\/<\/a><\/p>\n<p><strong>3. Perl modules<\/strong><br \/>\nThere are multiple modules for Perl that work with WHOIS servers.<br \/>\n<script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script><br \/>\n<ins class=\"adsbygoogle\" style=\"display: block;\" data-ad-format=\"fluid\" data-ad-layout-key=\"-fe+64+3o-l0+ql\" data-ad-client=\"ca-pub-7016851332009441\" data-ad-slot=\"9887643366\"><\/ins><br \/>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><\/p>\n<h2>Issues<\/h2>\n<ul>\n<li>Privacy: All the registrar&#039;s contact details appear, including phone numbers and addresses. This information is publicly available on the Internet.<\/li>\n<li>Spam: Spammers routinely capture plain text email addresses from responses from WHOIS servers. Some servers include Captcha-type systems, in which users must enter the letters that appear in an image (to avoid automatic queries).<\/li>\n<li>Internationalization: Unfortunately the WHOIS protocol was not written with the idea of internationalizing it. A WHOIS server cannot tell you which text encoding to use.<\/li>\n<li>Lack of a list of WHOIS servers: There is no centralized list with all WHOIS servers. Therefore, people who write WHOIS tools need to find\/make their own list, and different tools may query different WHOIS servers. One of the few sites that have a list is this page.<\/li>\n<li>Each server responds differently, so it is difficult to get the information from each field automatically.<\/li>\n<\/ul>\n<h2>Private Whois<\/h2>\n<p>Those persons or entities that so wish can prevent their contact information from being publicly accessible through the WHOIS system.<br \/>\n<strong>There are two types of services:<\/strong><\/p>\n<ul>\n<li>Privacy service: alternative contact details are published but the registrant is maintained as the beneficiary user of the domain name<\/li>\n<li>Representation service (proxy): The provider registers the domain name and grants a license to use it to its client. Thus, the domain provider&#039;s contact information is published instead of the customer&#039;s contact information.<\/li>\n<\/ul>\n<h2><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script><br \/>\n<ins class=\"adsbygoogle\" style=\"display: block;\" data-ad-format=\"fluid\" data-ad-layout-key=\"-fe+64+3o-l0+ql\" data-ad-client=\"ca-pub-7016851332009441\" data-ad-slot=\"9887643366\"><\/ins><br \/>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><br \/>\nWhere to check WHOIS of .pe domains<\/h2>\n<p>To check the whois and the availability of domains .pe, .com.pe, .org.pe, .net.pe, .nom.pe, .edu.pe, .mil.pe, .gob.pe and more extensions of domains you can use the AndeanHost tool:\u00a0<a href=\"http:\/\/whois.andean.me\/\" target=\"_blank\" rel=\"noopener\">http:\/\/whois.andean.me\/<\/a><\/p>\n<div class=\"pvc_clear\"><\/div>\n<p id=\"pvc_stats_875\" class=\"pvc_stats all\" data-element-id=\"875\" style=\"\"><i class=\"pvc-stats-icon small\" aria-hidden=\"true\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" version=\"1.0\" viewbox=\"0 0 502 315\" preserveaspectratio=\"xMidYMid meet\"><g transform=\"translate(0,332) scale(0.1,-0.1)\" fill=\"\" stroke=\"none\"><path d=\"M2394 3279 l-29 -30 -3 -207 c-2 -182 0 -211 15 -242 39 -76 157 -76 196 0 15 31 17 60 15 243 l-3 209 -33 29 c-26 23 -41 29 -80 29 -41 0 -53 -5 -78 -31z\"\/><path d=\"M3085 3251 c-45 -19 -58 -50 -96 -229 -47 -217 -49 -260 -13 -295 52 -53 146 -42 177 20 16 31 87 366 87 410 0 70 -86 122 -155 94z\"\/><path d=\"M1751 3234 c-13 -9 -29 -31 -37 -50 -12 -29 -10 -49 21 -204 19 -94 39 -189 45 -210 14 -50 54 -80 110 -80 34 0 48 6 76 34 21 21 34 44 34 59 0 14 -18 113 -40 219 -37 178 -43 195 -70 221 -36 32 -101 37 -139 11z\"\/><path d=\"M1163 3073 c-36 -7 -73 -59 -73 -102 0 -56 133 -378 171 -413 34 -32 83 -37 129 -13 70 36 67 87 -16 290 -86 209 -89 214 -129 231 -35 14 -42 15 -82 7z\"\/><path d=\"M3689 3066 c-15 -9 -33 -30 -42 -48 -48 -103 -147 -355 -147 -375 0 -98 131 -148 192 -74 13 15 57 108 97 206 80 196 84 226 37 273 -30 30 -99 39 -137 18z\"\/><path d=\"M583 2784 c-38 -19 -67 -74 -58 -113 9 -42 211 -354 242 -373 16 -10 45 -18 66 -18 51 0 107 52 107 100 0 39 -1 41 -124 234 -80 126 -108 162 -133 173 -41 17 -61 16 -100 -3z\"\/><path d=\"M4250 2784 c-14 -9 -74 -91 -133 -183 -95 -150 -107 -173 -107 -213 0 -55 33 -94 87 -104 67 -13 90 8 211 198 130 202 137 225 78 284 -27 27 -42 34 -72 34 -22 0 -50 -8 -64 -16z\"\/><path d=\"M2275 2693 c-553 -48 -1095 -270 -1585 -649 -135 -104 -459 -423 -483 -476 -23 -49 -22 -139 2 -186 73 -142 361 -457 571 -626 285 -228 642 -407 990 -497 242 -63 336 -73 660 -74 310 0 370 5 595 52 535 111 1045 392 1455 803 122 121 250 273 275 326 19 41 19 137 0 174 -41 79 -309 363 -465 492 -447 370 -946 591 -1479 653 -113 14 -422 18 -536 8z m395 -428 c171 -34 330 -124 456 -258 112 -119 167 -219 211 -378 27 -96 24 -300 -5 -401 -72 -255 -236 -447 -474 -557 -132 -62 -201 -76 -368 -76 -167 0 -236 14 -368 76 -213 98 -373 271 -451 485 -162 444 86 934 547 1084 153 49 292 57 452 25z m909 -232 c222 -123 408 -262 593 -441 76 -74 138 -139 138 -144 0 -16 -233 -242 -330 -319 -155 -123 -309 -223 -461 -299 l-81 -41 32 46 c18 26 49 83 70 128 143 306 141 649 -6 957 -25 52 -61 116 -79 142 l-34 47 45 -20 c26 -10 76 -36 113 -56z m-2057 25 c-40 -58 -105 -190 -130 -263 -110 -324 -59 -707 132 -981 25 -35 42 -64 37 -64 -19 0 -241 119 -326 174 -188 122 -406 314 -532 468 l-58 71 108 103 c185 178 428 349 672 473 66 33 121 60 123 61 2 0 -10 -19 -26 -42z\"\/><path d=\"M2375 1950 c-198 -44 -350 -190 -395 -379 -18 -76 -8 -221 19 -290 114 -284 457 -406 731 -260 98 52 188 154 231 260 27 69 37 214 19 290 -38 163 -166 304 -326 360 -67 23 -215 33 -279 19z\"\/><\/g><\/svg><\/i> <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" alt=\"Loading\" src=\"https:\/\/blog.index.pe\/wp-content\/plugins\/page-views-count\/ajax-loader-2x.gif\" border=\"0\" \/><\/p>\n<div class=\"pvc_clear\"><\/div>\n<div style=\"margin-top: 0px; margin-bottom: 0px;\" class=\"sharethis-inline-reaction-buttons\" ><\/div>","protected":false},"excerpt":{"rendered":"<p>It is a request\/response-based TCP protocol used to query a database to determine the owner of a domain name or IP address on the Internet. WHOIS queries have traditionally been performed using a command line interface, but there are currently many web pages that allow these queries to be performed. These pages still depend internally on the WHOIS protocol to connect to a WHOIS server and make requests. Command line clients are still widely used by system administrators. Types of response There are two ways to<\/p>","protected":false},"author":1,"featured_media":877,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[81],"tags":[181,180,182,179,177,178],"class_list":["post-875","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-internet","tag-pe","tag-dominio","tag-gob-pe","tag-tcp","tag-whois","tag-whois-lookup"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/blog.index.pe\/en\/wp-json\/wp\/v2\/posts\/875","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.index.pe\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.index.pe\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.index.pe\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.index.pe\/en\/wp-json\/wp\/v2\/comments?post=875"}],"version-history":[{"count":0,"href":"https:\/\/blog.index.pe\/en\/wp-json\/wp\/v2\/posts\/875\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.index.pe\/en\/wp-json\/wp\/v2\/media\/877"}],"wp:attachment":[{"href":"https:\/\/blog.index.pe\/en\/wp-json\/wp\/v2\/media?parent=875"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.index.pe\/en\/wp-json\/wp\/v2\/categories?post=875"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.index.pe\/en\/wp-json\/wp\/v2\/tags?post=875"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}