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https://infoseek.co.jp

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
68
GRADE
D
FIX
1
REVIEW
7
PASS
0
INFO
1
Probed from Madrid, Spain
302 Found
Checks
9
7 REVIEW 1 FIX
D
CDN & Delivery
Action
No CDN detected
FIX
No CDN detected
Warning::
No CDN detected
A CDN can significantly improve load times for users around the world by caching content at edge nodes closer to them.
No CDN detected

Consider using a CDN to improve global delivery speed and reduce origin load.

B
DNS Records
1 A records, 466 ms lookup
REVIEW
1 A records, 466 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 133.237.179.46
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
No IPv6 (AAAA) records
Info::
6 nameserver(s) configured
Got: ns01.rakuten.ad.jp, ns03.rakuten.co.jp, ns02.rakuten.co.jp, ns06.rakuten.co.jp, ns02.rakuten.ad.jp, ns01.rakuten.co.jp
Info::
1 mail exchanger(s) configured
Info::
CAA records not checked
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Info::
No SPF record found in TXT records
SPF helps prevent email spoofing. Add a TXT record starting with 'v=spf1'.
Warning::
DNS resolution is slow (466 ms)
Slow DNS adds latency to every page load. Consider a faster DNS provider.
Got: 466 ms
A133.237.179.46
AAAA—
CNAME—
NSns01.rakuten.ad.jp, ns03.rakuten.co.jp, ns02.rakuten.co.jp, ns06.rakuten.co.jp, ns02.rakuten.ad.jp, ns01.rakuten.co.jp
MX
0 infoseek-co-jp.mail.protection.outlook.com
TXT
58wbd374cx329nwc66g18qb5jz9bh925
69p8bmlp0jtttk32yb0rc66svstdh9rk
_lmyqfqcb332epvhxdq5a91ipm02vdst
6gftm672yxp0q2yqpfwkl17kqcjmy0xg
google-site-verification=3RG5LEcUj6JsKmS7vGuFaUxS3B3Xr73qkrjq5ZX9Vbk
23c4wnx42cwrg4yc6dxrmj71f28b12ds
_tr5k5b7oiy53634n3bq9m4vbk9oalgn
CAALookup not available with standard resolver
Resolved in 466 ms

Multiple A records provide failover if one server goes down.

Why this matters

Single A record means a single point of failure — if that IP goes down, your site is unreachable until DNS TTL expires.

Learn more ▾

Add multiple A records for round-robin failover, or use a managed DNS provider with health-checked failover (Route 53, Cloudflare, NS1). Short TTL (60-300s) lets clients recover faster on outages.

Source: SRE practice / DNS architecture

CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.

Why this matters

Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.

SPF helps prevent email spoofing. Add a TXT record starting with 'v=spf1'.

Why this matters

Without SPF, receiving servers can't validate sending IPs — your domain is easier to spoof in phishing.

Learn more ▾

SPF complements DMARC. Both should be published. SPF records list authorized sending IPs (e.g., `v=spf1 include:_spf.google.com ~all` for Google Workspace). After publishing, verify in Google Postmaster Tools or mxtoolbox.

Source: RFC 7208 (SPF)

Slow DNS adds latency to every page load. Consider a faster DNS provider.

Why this matters

DNS resolution is slow — anycast DNS providers (Cloudflare, Route 53) typically resolve <50ms globally.

Source: DNS performance benchmarks

B
Redirect Chain
1 redirect(s), 1583 ms total
REVIEW
1 redirect(s), 1583 ms total
Info::
Single redirect
Got: https://infoseek.co.jp → https://www.infoseek.co.jp (302)
Info::
WWW normalization redirect
Info::
Uses 302 (temporary) redirect
If permanent, use 301 instead.
Got: https://infoseek.co.jp
Warning::
Redirect overhead: 1583 ms total
Got: 1583 ms

https://infoseek.co.jp

774 ms · HTTP/1.1

302

https://www.infoseek.co.jp

809 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://infoseek.co.jp302774 msHTTP/1.1
2https://www.infoseek.co.jp200809 msHTTP/1.1

See the visual redirect chain in the HTTP Probe tab →

If permanent, use 301 instead.

Why this matters

302 (Found) is for genuinely temporary redirects — if this redirect is permanent, switch to 301 to preserve SEO equity.

Learn more ▾

Search engines treat 302 as temporary, keeping the original URL indexed and not transferring full link equity to the destination. Use 301 (Moved Permanently) for permanent redirects (HTTP→HTTPS, www-vs-non-www, URL restructures).

Source: Google Search Central

C
IPv6 Readiness
Action
No IPv6 support
REVIEW
No IPv6 support
Info::
No IPv6 (AAAA) records found
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No IPv6 Support
About 40% of internet users have IPv6. Consider adding AAAA records.

IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.

Why this matters

No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.

Source: Google IPv6 stats

C
Crawlability
Action
robots.txt present, sitemap with 0 URLs
REVIEW
robots.txt present, sitemap with 0 URLs
Info::
robots.txt is present
Got: 10240 bytes
Info::
sitemap.xml is present
Warning::
sitemap.xml contains invalid XML
Search engines may not be able to parse the sitemap. Fix XML validation errors.
Warning::
sitemap.xml is empty — no URLs found
An empty sitemap provides no value. Add <url> entries for your pages.
Info::
robots.txt does not reference a sitemap
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

Search engines may not be able to parse the sitemap. Fix XML validation errors.

Why this matters

An unparseable sitemap is silently ignored by Google — the URLs it advertises are never queued for crawl.

Learn more ▾

Google's sitemap parser is strict about XML validity. A single unescaped `&` or unclosed tag invalidates the whole file. Run your sitemap through a validator (Search Console's Sitemaps report flags it) and fix the offending entry. Most generators escape correctly; mistakes usually come from manually-written entries.

Source: sitemaps.org / Google Search Central

An empty sitemap provides no value. Add <url> entries for your pages.

Why this matters

An empty sitemap signals 'no content to index' to Google — actively harmful versus having no sitemap at all.

Learn more ▾

Google compares URLs in the sitemap against URLs it has crawled. An empty sitemap on a site with thousands of pages signals abandonment. Either populate it correctly (most CMSes auto-generate) or delete the file and let Google crawl normally.

Source: Google Search Central / sitemaps.org

Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

Why this matters

robots.txt omits Sitemap: directive — crawlers must fetch /sitemap.xml by convention; reliable but missing the explicit hint.

Source: sitemaps.org

robots.txt 200 OK
Size 10240 B Sitemaps referenced 0 User-agents Blocking No — crawling allowed
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html lang="ja" xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
    <meta http-equiv="content-type" content="text/html; charset=utf-8">
    <meta http-equiv="content-style-type" content="text/css">
    <meta http-equiv="content-script-type" content="text/javascript">
    <meta name="google-adsense-account" content="sites-0716410297350310">

<script>
  (function () {
    var ua = window.navigator.userAgent;
    if (ua) {
      if (ua.indexOf('Trident') !== -1 || ua.indexOf('MSIE') !== -1) {
        return;
      }
    }
    var purl = window.location.href;
    var url = '//ads.pubmatic.com/AdServer/js/pwt/135165/1272';
    var profileVersionId = '';
    if (purl.indexOf('pwtv=') > 0) {
      var regexp = /pwtv=(.*?)(&|$)/g;
      var matches = regexp.exec(purl);
      if (matches.length >= 2 && matches[1].length > 0) {
        profileVersionId = '/' + matches[1];
      }
    }
    var wtads = document.createElement('script');
    wtads.async = true;
    wtads.type = 'text/javascript';
    wtads.src = url + profileVersionId + '/pwt.js';
    var node = document.getElementsByTagName('script')[0];
    node.parentNode.insertBefore(wtads, node);
  })();
</script>
<script async src="https://securepubads.g.doubleclick.net/tag/js/gpt.js"></script>
<script>
  window.googletag = window.googletag || { cmd: [] };

  var view_width = 0;
  var mdAdDispTarget = '0';
  if (window.frameElement) {
    view_width = (window.top.innerWidth || window.top.documentElement.clientWidth || window.top.getElementsByTagName('body')[0].clientWidth);
  } else {
    view_width = (window.innerWidth || document.documentElement.clientWidth || document.getElementsByTagName('body')[0].clientWidth)
  }
  if (view_width > 1366) {
    mdAdDispTarget = '1';
  }

  googletag.cmd.push(function () {
    googletag.defineSlot('/7727/Infoseek/News/Showcase02', [640, 360], 'div-gpt-ad-1551420131775-0').addService(googletag.pubads());
    googletag.defineSlot('/7727/Infoseek/News/Rect4th', [[300, 250], [300, 600]], 'div-gpt-ad-1459991221227-0').addService(googletag.pubads());
    googletag.defineSlot('/7727/Infoseek/News/FooterRectLeft', [300, 250], 'div-gpt-ad-1450765899626-0').addService(googletag.pubads());
    googletag.defineSlot('/7727/Infoseek/News/FooterRectRight', [300, 250], 'div-gpt-ad-1469511899781-0').addService(googletag.pubads());
    googletag.pubads().enableSingleRequest();
    googletag.pubads().collapseEmptyDivs();
    googletag.pubads().setTargeting("mdAdDispTarget", mdAdDispTarget);
    googletag.pubads().setTargeting('adnwpub', ['9_InfoseekTOP']);
    googletag.enableServices();
  });
</script>
<script>
  function pwtExec(slots) {
    window.PWT = window.PWT || {};
    var refreshFlg = false;
    googletag.cmd.push(function () {
      function displaySlots() {
        if (refreshFlg) return;
        refreshFlg = true;
        googletag.display(slots[0].getSlotElementId());
      }
      if (typeof PWT.requestBids === 'function') {
        PWT.requestBids(
          PWT.generateConfForGPT(slots),
          function (adUnitsArray) {
            PWT.addKeyValuePairsToGPTSlots(slots);
            displaySlots();
          }
        );
      } else {
        displaySlots();
      }
      var FAILSAFE_TIMEOUT = 2000;
      setTimeout(function () {
        displaySlots();
      }, FAILSAFE_TIMEOUT);
    });
  }
</script>

<!-- Geniee Wrapper Head Tag -->
<script>
  window.gnshbrequest = window.gnshbrequest || {cmd:[]};
  window.gnshbrequest.cmd.push(function(){
    window.gnshbrequest.registerPassback("1574635");
    window.gnshbrequest.forceInternalRequest();
  });
</script>
<script async src="https://securepubads.g.doubleclick.net/tag/js/gpt.js"></script>
<script async src="https://cpt.geniee.jp/hb/v1/150154/813/wrapper.min.js"></script>
<!-- /Geniee Wrapper Head Tag -->

<!-- Taboola PC Top -->
<!-- head -->
<script>
  window._newsroom = window._newsroom || [];
  window._newsroom.push({pageTemplate: 'home'});
  window._newsroom.push({pageDashboard: 'home'});
  window._newsroom.push('auditClicks');
  window._newsroom.push('trackPage');
  !function (e, f, u) {
    e.async = 1;
    e.src = u;
    f.parentNode.insertBefore(e, f);
  }(document.createElement('script'),
  document.getElementsByTagName('script')[0],
  '//c2.taboola.com/nr/rakuten-infoseek/newsroom.js');
</script>
<script type="text/javascript">
  window._taboola = window._taboola || [];
  _taboola.push({homepage:'auto'});
  !function (e, f, u, i) {
    if (!document.getElementById(i)){
      e.async = 1;
      e.src = u;
      e.id = i;
      f.parentNode.insertBefore(e, f);
    }
  }(document.createElement('script'),
  document.getElementsByTagName('script')[0],
  '//cdn.taboola.com/libtrc/rakuten-infoseek/loader.js',
  'tb_loader_script');
  if(window.performance && typeof window.performance.mark == 'function')
    {window.performance.mark('tbl_ic');}
</script>
<!-- /head -->
<!-- /Taboola PC Top -->

    <link rel="stylesheet" href="/pc/css/reset-1.0.css" media="all">
    <link rel="stylesheet" href="/pc/css/common-2.4.css" media="all">
    <link rel="stylesheet" href="/pc/css/style-3.10.css" media="all">
    <link rel="stylesheet" href="/pc/css/components/layout_top-1.0.css" media="all">
    <script src="/03/lib/jquery-3.5.1.min.js"></script>
    
    <script type="text/javascript" src="/03/lib/jquery.url-1.0.js"></script>
    <script type="text/javascript" src="/03/lib/URI.js-1.19.1.js"></script>
    <script type="text/javascript" src="/03/lib/js.cookie-2.2.0.min.js"></script>
    <script type="text/javascript" src="/02/d/js/isnews_common-1.0.js"></script>
    <script type="text/javascript" src="/pc/js/scripts-1.4.js"></script>
    <script type="text/javascript" src="/pc/js/searchSuggest-1.2.js"></script>
    <script type="text/javascript" src="/pc/js/logout-1.0.js"></script>
    <link rel="icon" href="/favicon-3.0.ico">
    <link rel="mask-icon" href="/pagepin-3.0.svg" color="#002896" />
    
        <!-- pc_head_analytics.inc -->
<meta name="google-site-verification" content="NYr0Nga98126N6FOZsXLszoeMCHSY2Kta4oyi3dxFYw" />
<!-- /pc_head_analytics.inc -->
    
    
    
    <title>Infoseek[インフォシーク] - 楽天が運営するニュースサイト</title>
    <meta name="description" content="Infoseek（インフォシーク）は、社会、経済、国際、芸能、スポーツ、IT、天気等の最新ニュースを配信しています。楽天ポイントが獲得出来るお小遣いコンテンツ（ポイ活）やお得な情報も充実しています。" />
    <meta name="keywords" content="Infoseek,インフォシーク,楽天,ニュース,天気,楽天ポイント,ポイント,BINGO,ラッキーくじ" />
    <meta property="og:title" content="Infoseek[インフォシーク] - 楽天が運営するニュースサイト" />
    <meta property="og:type" content="article" />
    <meta property="og:url" content="https://www.infoseek.co.jp" />
    <meta property="og:image" content="https://media.image.infoseek.co.jp/shared/news/og/infoseeklogo.png" />
    <meta property="og:description" content="Infoseek（インフォシーク）は、社会、経済、国際、芸能、スポーツ、IT、天気等の最新ニュースを配信しています。楽天ポイントが獲得出来るお小遣いコンテンツ（ポイ活）やお得な情報も充実しています。" />
    <meta property="og:site_name" content="Infoseek" />
    <meta property="og:locale" content="ja_JP" />
    <meta property="fb:app_id" content="372949732897344" />
    <link rel="canonical" href="https://www.infoseek.co.jp">
</head>
<body>
    
    <div id="top_header_ad_area">
        
        <!-- common_top_of_header -->
        <!-- MNO Promotion -->
<!-- script for bannar display and targeting -->
<script src="//jp.rakuten-static.com/1/grp/banner/js/create.js"></script>
<!-- PC header banner -->
<!-- <div id="mkdiv_header_pitari"></div> -->

    
        
        <div id="headerAd1Cmp" class="co-Widget co-Horizontal">
            <!-- inc/npf/pc/ad/top_header_ad1.inc -->
<!-- temporary -->
<style>
    #top_header_ad_area { margin:0 auto; width:1040px;}
</style>
<!-- /temporary -->
<!-- MNO banner -->
 <div id="mkdiv_header_pitari" style="height:50px"></div>

<!-- /7727/Infoseek/Top/Billboard -->
<div id='div-gpt-ad-1586862196194-0' class="header-ad-long" style='min-height: 250px' align="center"></div>
<script>
  var rdntag = rdntag || {};
  rdntag.cmd = rdntag.cmd || [];
  rdntag.cmd.push(function () {
    rdntag
      .defineAd("27585", "div-gpt-ad-1586862196194-0").setRz(Cookies.get("Rz") || "");
    rdntag.display("div-gpt-ad-1586862196194-0");
  });
</script>
<script src="https://s-cdn.rmp.rakuten.co.jp/js/aa.js" async></script>
<script>
  document.getElementById('div-gpt-ad-1586862196194-0').addEventListener('slotResponseReceived', function (e) {
    if (e && e.detail && e.detail.adReturned === false) {
      window.googletag = window.googletag || { cmd: [] };
      googletag.cmd.push(function () {
        var slot = googletag.defineSlot('/7727/Infoseek/Top/Billboard', [[1, 1], [728, 90], [970, 90], [970, 250], 'fluid'], 'div-gpt-ad-1586862196194-0').addService(googletag.pubads());
        googletag.pubads().collapseEmptyDivs();
        googletag.enableServices();
        window.pwtExec([slot]);
      });
    }
  });
</script>
<!-- END_AD_Banner -->

<!-- /7727/Infoseek/News/FooterOverlay -->
    <script async src="https://securepubads.g.doubleclick.net/tag/js/gpt.js"></script>
    <script>
    var scrollFirstTime = 1;
    function oneTimeFunction() {
    if (scrollFirstTime === 1 && $(window).scrollTop() > 1) {
    window.googletag = window.googletag || {cmd: []};
        googletag.cmd.push(function () {
            var targetSlot = googletag.defineSlot('/7727/Infoseek/News/FooterOverlay', [[970, 90], [728, 90]], 'div-gpt-ad-1603846419813-0').setTargeting('refresh', 'true').addService(googletag.pubads());
            googletag.pubads().addEventListener('slotRenderEnded', function(event) {
                if(!event.isEmpty){
sitemap.xml 200 OK
Type URL Set URLs 0 entries Valid XML No
C
URL Variants
Action
www/non-www, trailing slash, HTTP→HTTPS
REVIEW
www/non-www, trailing slash, HTTP→HTTPS
Critical::
Both www and non-www versions serve content
Got: Both variants return 200 Expected: One variant 301-redirects to the other
Warning::
HTTP→HTTPS redirect uses 302 instead of 301
Got: 302 temporary redirect Expected: 301 permanent redirect

www / non-www

200https://www.infoseek.co.jp/
200https://infoseek.co.jp/

Inconsistent — duplicate content risk

HTTP → HTTPS

302http://infoseek.co.jp/ → https://www.infoseek.co.jp

Use 301 (permanent) instead of 302 (temporary)

B
HTTP Probe Timing
Total 1062 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
REVIEW
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
258 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
267 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
269 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
1.06 s
Total Time Total request time from DNS lookup through full response.
1.06 s

Connection waterfall

DNS Lookup 258 ms TCP Connect 267 ms TLS Handshake 269 ms Server Processing 268 ms Content Transfer 0 ms
B
TLS Certificate Expiry & Recommendations
132 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

132
days left
0d 30d 60d 90d+

Recommended actions

  • Enable HSTS: Strict-Transport-Security: max-age=31536000; includeSubDomains
  • Enable DNSSEC on your domain for DNS spoofing protection
  • Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
Domain Intelligence
Domain intelligence data not available
INFO
Domain intelligence data not available

RDAP and WHOIS lookup both failed

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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