Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Probed from Madrid, Spain

302 Found

Checks

1 PASS 4 REVIEW 3 FIX

Redirect Chain

Action

2 redirect(s), 2346 ms total

FIX

2 redirect(s), 2346 ms total

2 redirects before reaching final URL

Each redirect adds latency. Try to minimize the chain to 1 hop.

HTTP to HTTPS redirect present

WWW normalization redirect

2-hop chain could be reduced to 1 hop

Redirect directly from https://hatena.ne.jp to https://www.hatena.ne.jp:443/

Uses 302 (temporary) redirect

If permanent, use 301 instead.

Got: https://hatena.ne.jp

Redirect overhead: 2346 ms total

Got: 2346 ms

https://hatena.ne.jp

907 ms · HTTP/1.1

302

http://www.hatena.ne.jp

482 ms · HTTP/1.1

301

https://www.hatena.ne.jp:443/

956 ms · HTTP/1.1 FINAL

#	URL	Status	Time	Protocol	Server
1	https://hatena.ne.jp	302	907 ms	HTTP/1.1	nginx
2	http://www.hatena.ne.jp	301	482 ms	HTTP/1.1	awselb/2.0
3	https://www.hatena.ne.jp:443/	200	956 ms	HTTP/1.1	nginx

See the visual redirect chain in the HTTP Probe tab →

Each redirect adds latency. Try to minimize the chain to 1 hop.

Why this matters

Redirect chain — each hop adds latency; combine into one redirect where possible.

Source: Google Search Central / web.dev

Redirect directly from https://hatena.ne.jp to https://www.hatena.ne.jp:443/

Why this matters

Redirect chain could be flattened to one hop — server config tweak removes intermediate latency.

Source: web.dev

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

URL Variants

Action

www/non-www, trailing slash, HTTP→HTTPS

FIX

www/non-www, trailing slash, HTTP→HTTPS

Both www and non-www versions serve content

Got: Both variants return 200 Expected: One variant 301-redirects to the other

HTTP version does not redirect to HTTPS

Got: HTTP 302 Expected: 301 redirect to HTTPS

www / non-www

200https://www.hatena.ne.jp/

200https://hatena.ne.jp/

Inconsistent — duplicate content risk

HTTP → HTTPS

302http://hatena.ne.jp/ → http://www.hatena.ne.jp

HTTP version does not redirect to HTTPS

CDN & Delivery

Action

No CDN detected

FIX

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.

IPv6 Readiness

Action

No IPv6 support

REVIEW

No IPv6 support

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

Crawlability

Action

robots.txt present, sitemap with 0 URLs

REVIEW

robots.txt present, sitemap with 0 URLs

robots.txt is present

Got: 10240 bytes

sitemap.xml is present

sitemap.xml contains invalid XML

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

sitemap.xml is empty — no URLs found

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

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><html lang="ja"><head><script>
                (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
                new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
                j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
                '//www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
                })(window,document,'script','dataLayer','GTM-WPVF7X');</script><meta charSet="utf-8"/><link rel="icon" href="/p/images/favicon.ico"/><link rel="apple-touch-icon" sizes="192x192" href="/p/images/apple-touch-icon.png"/><link rel="icon" type="image/png" sizes="256x256" href="/p/images/android-chrome-256x256.png"/><meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, viewport-fit=cover"/><meta name="format-detection" content="telephone=no"/><meta name="keywords" content="はてな,hatena,ブログ,ウェブアルバム,ブックマーク"/><meta name="description" content="はてなが運営するポータルサイト。ブログもウェブアルバムもニュースも、はてながあればネットがさらに便利になります。"/><meta name="verify-v1" content="dMI6HLQAvGFS/A1q/gvLdBpOa37cDdjfrBLWc9c0b8Q="/><meta name="y_key" content="a3fb177b9c8a9e0a"/><title>はてな</title><meta property="og:url" content="https://www.hatena.ne.jp/"/><meta property="og:title" content="はてな"/><meta property="og:description" content="ブログもニュースもコミュニティも。知りたいこと、伝えたいことが集まる、はてなのコンテンツプラットフォーム。"/><meta property="og:site_name" content="Hatena(はてな)"/><meta property="og:type" content="website"/><meta property="og:image" content="https://www.hatena.ne.jp/p/images/ogimage.png?202008"/><meta property="og:image:width" content="1200"/><meta property="og:image:height" content="630"/><meta name="twitter:card" content="summary_large_image"/><meta name="next-head-count" content="20"/><link rel="preload" href="/_next/static/css/1af1e689739f4bef1893.css" as="style"/><link rel="stylesheet" href="/_next/static/css/1af1e689739f4bef1893.css" data-n-g=""/><link rel="preload" href="/_next/static/css/3a4db6b74a0484a906fc.css" as="style"/><link rel="stylesheet" href="/_next/static/css/3a4db6b74a0484a906fc.css" data-n-p=""/><noscript data-n-css=""></noscript><link rel="preload" href="/_next/static/chunks/main-a70d24739995d9761139.js" as="script"/><link rel="preload" href="/_next/static/chunks/webpack-245f049e565ebf942e09.js" as="script"/><link rel="preload" href="/_next/static/chunks/framework.bf835f192d9c4f88cfd8.js" as="script"/><link rel="preload" href="/_next/static/chunks/commons.a42b805dfa30ddf29109.js" as="script"/><link rel="preload" href="/_next/static/chunks/2b0584c9c3b2247265ca83040edbd2ef06237df5.61dc0277137245f25eaa.js" as="script"/><link rel="preload" href="/_next/static/chunks/b1542cc239bf56c8a14913c0a930efe682b5cf86.f9cf33e0dc1fcea1fda9.js" as="script"/><link rel="preload" href="/_next/static/chunks/71247caf95475e3ea7f9a0f8a30beb258b23d005.5c75bf83ded413fb678f.js" as="script"/><link rel="preload" href="/_next/static/chunks/pages/_app-2737f5d6d0d2b230e5c9.js" as="script"/><link rel="preload" href="/_next/static/chunks/67557a23317708ba96c9e9ef98fcd1f133202f11.a9aa7bcec9726b59b94e.js" as="script"/><link rel="preload" href="/_next/static/chunks/pages/index-abdab3dd89b4e3023f85.js" as="script"/></head><body><noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-WVHPVP" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript><div id="unsupported-browser" style="display:none"><p>ご利用のブラウザーは現在サポートしていません。以下のリンクより最新のブラウザーをダウンロードしてご利用ください。<ul><li><a href="https://www.microsoft.com/edge">Microsoft Edge</a></li><li><a href="https://www.mozilla.org/firefox/new/">Mozilla Firefox</a></li><li><a href="https://www.google.com/chrome/">Google Chrome</a></li></ul></p></div><style>
  #unsupported-browser {
    color: #FFF;
    font-size: 0.875rem;
    text-align: center;
    padding: 12px;
    margin: 12px 12px 0;
    background-color: #FF2D32;
    border-radius: 4px;
  }
  #unsupported-browser p {
    margin: 0;
  }
  #unsupported-browser ul {
    display: flex;
    justify-content: center;
    list-style: none;
  }
  #unsupported-browser li {
    margin: 12px 6px 0;
  }
  #unsupported-browser a {
    color: #FFF;
  }
</style><script>
  if (/Trident/.test(navigator.userAgent)) {
      document.getElementById('unsupported-browser').removeAttribute('style');
  }
</script><div id="__next"><div class="Layout_container__21Rhq"><header class="Header_header__3Z-q0 Header_guest__292pz"><h1 class="Header_sitename__2u00X Header_guest__292pz"><a href="/" title="はてな"><span>はてな</span></a></h1><form class="SearchForm_form__1uh4K"><input class="SearchForm_search__2uCT4 SearchForm_guest__3SwLY" placeholder="はてなのエントリーを検索する" aria-label="はてなのエントリーを検索"/></form><ul class="Header_menu__2dtDj Header_guest__292pz"><li><a href="https://www.hatena.ne.jp/login?via=200125" class="Header_signin__1oGiB">ログイン</a></li><li><a href="https://www.hatena.ne.jp/register?via=200125" class="Header_signup__3ds0U">はてなIDを作る</a></li></ul></header><div class="Introduction_introduction__1eH1_"><div class="Introduction_wrapper__2DGNR"><h2>知りたいこと、伝えたいこと、<span class="Introduction_adjust__32Hag"></span><br/>全部はてなで。<span class="Introduction_adjust__32Hag"></span></h2><p>はてなIDがあれば<br/>あなたの知的好奇心を刺激する<br/>様々なサービスが楽しめます</p><a href="https://www.hatena.ne.jp/register?via=200125" class="Introduction_signup__qyLDl">はてなIDを作る<span>(無料)</span></a></div></div><div class="index_container__3Or0C"><div class="ContentsFeed_tabs__vFVou" data-tabs="true"><ul class="ContentsFeed_tabList__XMQya" role="tablist"><li title="はてなで話題のエントリー" class="ContentsFeed_tab__3angK merged ContentsFeed_selectedTab__2aQaL" role="tab" id="react-tabs-0" aria-selected="true" aria-disabled="false" aria-controls="react-tabs-1" tabindex="0"><span>ホーム</span></li><li title="はてなブックマークの人気エントリー" class="ContentsFeed_tab__3angK bookmark" role="tab" id="react-tabs-2" aria-selected="false" aria-disabled="false" aria-controls="react-tabs-3"><span>はてなブックマーク</span></li><li title="はてなブログの人気記事" class="ContentsFeed_tab__3angK blog" role="tab" id="react-tabs-4" aria-selected="false" aria-disabled="false" aria-controls="react-tabs-5"><span>はてなブログ</span></li><li title="人力検索はてなの人気の質問" class="ContentsFeed_tab__3angK question" role="tab" id="react-tabs-6" aria-selected="false" aria-disabled="false" aria-controls="react-tabs-7"><span>人力検索はてな</span></li><li title="はてな匿名ダイアリーの人気エントリー" class="ContentsFeed_tab__3angK anond ContentsFeed_tabSeparator__1kg7z" role="tab" id="react-tabs-8" aria-selected="false" aria-disabled="false" aria-controls="react-tabs-9"><span>はてな匿名ダイアリー</span></li><li title="はてなの新着情報" class="ContentsFeed_tab__3angK notice" role="tab" id="react-tabs-10" aria-selected="false" aria-disabled="false" aria-controls="react-tabs-11"><span>はてなの新着情報</span></li></ul><div class="ContentsFeed_tabPanel__1rqae react-tabs__tab-panel--selected" role="tabpanel" id="react-tabs-1" aria-labelledby="react-tabs-0"><h2 class="ContentsFeed_heading__1lSA-">はてなで話題のエントリー</h2><ul class="EntryList_entryList__3CrI0 MergedEntry"><li tabindex="0" class="EntryList_entryListItem__1vXtf BookmarkEntry"><article><a href="https://b.hatena.ne.jp/" class="Service_service__3GJZQ" data-text="はてなブックマークを開く" target="_blank"><span>はてなブックマーク</span></a><div class="Entry_entry__qxjrw Entry_hasImage__3WDSc Entry_merged__jGh-R BookmarkEntry"><h3 class="Entry_title__D_eJk"><a href="https://shonenjumpplus.com/episode/17107419589536396238" target="_blank" rel="noreferrer noopener">[第46話]こわいやさん - カメントツ | 少年ジャンプ＋</a> </h3><a class="BookmarkCount_count__3_Ta3" href="https://b.hatena.ne.jp/entry/s/shonenjumpplus.com/episode/17107419589536396238#utm_campaign=hatena_portal_top&amp;utm_source=www.hatena.ne.jp&amp;utm_medium=referral&amp;utm_content=users" target="_blank">17 users</a><a class="Entry_thumbnail__x1kmi Entry_merged__jGh-R" href="https://shonenjumpplus.com/episode/17107419589536396238" style="background-image:url(https://cdn.image.st-hatena.com/image/scale/981152901b6f582f5542c480bb37ccbf7038f499/enlarge=0;height=126;version=1;width=240/https%3A%2F%2Fcdn-ak-img.shonenjumpplus.com%2Fpublic%2Fseries-thumbnail%2F17106567264478293090-9a3f8efe7f30c6bb21a0bef35c10cf14%3F1775129406)" aria-label="" target="_blank" rel="noreferrer noopener"></a></div><div class="Cite_Cite__2eXKo"><img src="https://cdn-ak2.favicon.st-hatena.com/?url=https%3A%2F%2Fshonenjumpplus.com%2Fepisode%2F17107419589536396238" class="Cite_favicon__1QPOj" alt=""/><a class="Cite_citation__1gpUp" href="https://b.hatena.ne.jp/entrylist?url=https%3A%2F%2Fshonenjumpplus.com#utm_campaign=hatena_portal_top&amp;utm_source=www.hatena.ne.jp&amp;utm_medium=referral&amp;utm_content=entrylist_root_url" target="_blank">shonenjumpplus.com</a></div></article></li><li tabindex="0" class="EntryList_entryListItem__1vXtf BookmarkEntry"><article><a href="https://b.hatena.ne.jp/" class="Service_service__3GJZQ" data-text="はてなブックマークを開く" target="_blank"><span>はてなブックマーク</span></a><div class="Entry_entry__qxjrw Entry_hasImage__3WDSc Entry_merged__jGh-R BookmarkEntry"><h3 class="Entry_title__D_eJk"><a href="https://shonenjumpplus.com/episode/17107419589536396171" target="_blank" rel="noreferrer noopener">[1話(読切)＋2話]ヒトナー - 屋宜知宏 | 少年ジャンプ＋</a> </

sitemap.xml 200 OK

Type URL Set URLs 0 entries Valid XML No

HTTP Probe Timing

Total 939 ms — DNS, TCP, TLS, TTFB, content transfer breakdown

REVIEW

DNS Lookup

37 ms

TCP Connect

225 ms

TLS Handshake

451 ms

Time to First Byte

939 ms

Total Time

940 ms

Connection waterfall

DNS Lookup 37 ms TCP Connect 225 ms TLS Handshake 451 ms Server Processing 227 ms Content Transfer 0 ms

TLS Certificate Expiry & Recommendations

172 days until leaf cert expires — 4 issues to address

REVIEW

Certificate validity

172

days left

0d 30d 60d 90d+

Recommended actions

Prefer TLS 1.3 — TLS 1.2 is acceptable but TLS 1.3 removes RSA key exchange and improves latency
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

A+

DNS Records

2 A records, 37 ms lookup

PASS

2 A records, 37 ms lookup

Resolves to 2 IPv4 address(es)

Got: 57.181.202.206, 35.72.168.38

No IPv6 (AAAA) records

4 nameserver(s) configured

Got: ns-451.awsdns-56.com, ns-1239.awsdns-26.org, ns-947.awsdns-54.net, ns-1574.awsdns-04.co.uk

5 mail exchanger(s) configured

CAA records not checked

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

SPF record present in TXT

DNS resolution time: 37 ms

Got: 37 ms

A	57.181.202.206, 35.72.168.38
AAAA	—
CNAME	—
NS	ns-451.awsdns-56.com, ns-1239.awsdns-26.org, ns-947.awsdns-54.net, ns-1574.awsdns-04.co.uk
MX	1 aspmx.l.google.com 5 alt2.aspmx.l.google.com 5 alt1.aspmx.l.google.com 10 alt3.aspmx.l.google.com 10 alt4.aspmx.l.google.com
TXT	asv=a8e5d273b76f88deefc224b6a9ce68b0 google-site-verification=hrx_H2uVYkfLApl2EI055w2RWF0f57Io2394j8Q_3xs SPF v=spf1 include:_spf.hatena.ne.jp include:_spf.google.com include:mail.zendesk.co... google-site-verification=83SvSrNSkfG7S6MdBNm4GLwYtj2nES5OPUJs0BatXbE google-site-verification=vHhfZewGUvKPV5mdv3lxiTpvKaiJG2oNCJiyCuVt1mw miro-verification=30ea4f88e96b008a1ad6214444a0a442b15537f2 apple-domain-verification=CdvKMEI4ZV6sz4UX fastly-domain-delegation-TBHvHH7DYm1opbV-490434-2022-05-19 MS=ms11945393 anthropic-domain-verification-bjyjae=TS17rMauFlmbmJe6RovrOEHbS MS=AEC9C6BBEAC42285017CFFBFC86A26F198D64745
CAA	Lookup not available with standard resolver

Resolved in 37 ms

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.

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.