21qa.net Website Status

Last Check: 3 days ago

21qa.net Is Up!

21QA-电子工程师与软件工程师的高质量问答社区
Status
Response Time
Response Code
200

We managed to reach www.21qa.net in 0.00411 seconds. Looks like the website is UP and running. We did not track any errors while reaching to the to www.21qa.net. The response code we got from the website is 200. If you are sure that the website is not reachable from your location and the issue is not caused by the options of your browser or operating system then you can submit the issue by pressing "Report Issue" button below. We will record your location, time and website that was not possible to load.

Outage Map for 21qa.net

Last 120 Hours
# Time Location
1 3 days ago Mountain View
Down Up Outage

Domain Information

HTTP/1.1 200 OK
Server: nginx/1.10.2
Date: Fri, 19 Jul 2019 03:18:57 GMT
Content-Type: text/html; charset=utf-8
Transfer-Encoding: chunked
Connection: keep-alive
Vary: Cookie, Accept-Language
Content-Language: en
Set-Cookie: csrftoken=RKTnUVVrGST0E15AhD4POvrXSxMZcdAP; expires=Fri, 17-Jul-2020 03:18:57 GMT; Max-Age=31449600; Path=/
Set-Cookie: sessionid=m4iz3alyszp9pj87eqey1my5bhph974w; expires=Fri, 02-Aug-2019 03:18:57 GMT; httponly; Max-Age=1209600; Path=/
Set-Cookie: greeting_set=True; Path=/
Effective url: https://21qa.net/
Http code: 200
Filetime: -1
Total time: 3.109466
Namelookup time: 0.00411
Connect time: 0.273409
Pretransfer time: 0.844389
Starttransfer time: 1.743596
Primary ip: 115.28.154.17
Primary port: 443
Size download: 75079
Speed download: 24145
Speed upload: 0
Header size: 705
Request size: 784
Ssl verifyresultg curlopt ssl verifypeer: 0
Content length download: 0
Content length upload: 0
Content type: text/html; charset=utf-8
Response code: 200
Http connectcode: 0
Httpauth avails response: 0
Proxyauth availe previous response: 0
Os errno: 0
Num connects: 2
Sitemap?http://www.21qa.net/sitemap.xml

Header Tag Content


        <title>21QA-电子工程师与软件工程师的高质量问答社区</title>
        <meta name="description" content="" />
        <meta name="keywords" content="21QA,  电子技术,  软件技术,嵌入式,单片机,ARM,Linux,stm32,操作系统,OS,电源,PCB,开关电源,物联网,智能家居,c,c++,算法,51,AVR,cortex,变频器,工控,仪表" />
        
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        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
        
        <meta name="baidu-site-verification" content="1kf5gK5yuW" />
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        <script type="text/javascript">
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            google.load("jqueryui", "1", {autoload:true});

            var i18nLang = 'zh';
            var appUrl = 'http://www.21qa.net'
            var scriptUrl = '/'
            var osqaSkin = 'default';

            var messages = {
                username: '',
                confirm: "Are you sure?",
                yes: "Yes",
                no: "No",
                message: "Message:",
                cancel: "Cancel",
                close: "Close",
                ok: "Ok",
                matching_tags_url: "/matching_tags/",
                word: "word",
                words: "words",
                character: "character",
                characters: "characters"
            }
        /*]]>*/
        </script>
        <script type="text/javascript" src="/m/default/media/js/osqa.main.js"></script>
        
        <style type="text/css">
            body { margin-top:2.4em; }
        </style>
        <script type="text/javascript">
            $(document).ready(function() {
                var element = $('#validate_email_alert');
                element.click(function(){notify.close(true);})
                notify.show();
            });
        </script>
        
        
            
        
        
        <link rel="search" type="application/opensearchdescription+xml" href="/opensearch.xml" title="21QA工程师问答社区 Search" />
        
        <script type="text/javascript">
            function super_search() {
                var redirect_opt = $("input[name='t']:checked").val();
                if ( redirect_opt == "baidu" ) {
                    url = "http://www.baidu.com/s?wd=" + $("#keywords").val();
                    window.open(url)
                } else if ( redirect_opt == "21ic" ) {
                    url = "http://www.baidu.com/s?wd="+ $("#keywords").val() + " site:bbs.21ic.com";
                    window.open(url)
                } else if ( redirect_opt == "google" ) {
                    url = "http://www.gfsoso.com/?q=" + $("#keywords").val()
                    window.open(url)
                } else if ( redirect_opt == "opensource" ) {
                    url = "http://www.baidu.com/s?wd="+ $("#keywords").val() + " site: github.com";
                    window.open(url)
                } else if ( redirect_opt == "csdn" ) {
                    url = "http://www.baidu.com/s?wd="+ $("#keywords").val() + " inurl:csdn.net";
                    window.open(url)
                } else if ( redirect_opt == "words" ) {
                    url = "http://dict.youdao.com/search?q="+ $("#keywords").val();
                    window.open(url)
                } else if ( redirect_opt == "datasheet" ) {
                    url = "http://www.baidu.com/s?wd="+ $("#keywords").val() + " site:alldatasheet.com";
                    window.open(url)
                } else {
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            }
        </script>
    
Troubleshooting Instructions

21QA.NET is UP, but you can't load it with your browser? Try this:

  1. Hit CTRL + F5 keys simultaneously. This will make your browser empty the cookies and reload the page without any previously stored data about it.
  2. Clean the cache of your computers DNS. This will allow your device to set up the connection to 21qa.net refreshing the route details.
  3. Restart your modem and if does not help then restart the computer.

Another way is to use online proxy tool that will allow you to browse 21qa.net using proxy servers as intermediate agents.

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