Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.DCDN & DeliveryActionNo CDN detectedFIX
Consider using a CDN to improve global delivery speed and reduce origin load.
BRedirect Chain1 redirect(s), 1677 ms totalREVIEW
https://nikkei.com
625 ms · HTTP/1.1
https://www.nikkei.com:443/
1052 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://nikkei.com | 302 | 625 ms | HTTP/1.1 | awselb/2.0 |
| 2 | https://www.nikkei.com:443/ | 200 | 1052 ms | HTTP/1.1 |
See the visual redirect chain in the HTTP Probe tab →
If permanent, use 301 instead.
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
CCrawlabilityActionrobots.txt present, sitemap with 0 URLsREVIEW
Search engines may not be able to parse the sitemap. Fix XML validation errors.
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.
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.
robots.txt omits Sitemap: directive — crawlers must fetch /sitemap.xml by convention; reliable but missing the explicit hint.
Source: sitemaps.org
<!DOCTYPE html><html lang="ja" data-service-name="k2-top" data-is-webview="false"><head><meta charSet="utf-8"/><meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1"/><link rel="preload" as="image" href="https://www.nikkei.com/api/svg/v1/k-search.rev-adf84c.svg?fill=%23333"/><link rel="preload" as="image" href="/.resources/k-components/logo/masthead.rev-b8cf30e.png"/><link rel="preload" as="image" href="/.resources/k-components/icon/prime-digital-governance.rev-0b4eacf.svg"/><link rel="preload" as="image" href="/.resources/k-components/icon/nikkei-financial.rev-1034954.svg"/><link rel="preload" as="image" href="/.resources/k-components/icon/prime-ft-the-world.rev-e0334d4.svg"/><link rel="preload" as="image" href="/.resources/k-components/icon/prime-gx.rev-734d3be.svg"/><link rel="preload" as="image" href="/.resources/k-components/icon/prime-minutes.rev-e4faa83.svg"/><link rel="preload" as="image" 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href="/.resources/k-components/icon/beginner.rev-eb0f789.svg"/><link rel="preload" as="image" href="/.resources/k-components/icon/pr.rev-3437e86.svg"/><link rel="preload" as="image" href="/.resources/k-components/icon/play.rev-abf30fc.svg"/><meta name="bingbot" content="noarchive"/><meta name="theme-color" content="#003e70"/><title>日本経済新聞 - ニュース・速報 最新情報</title><meta property="og:title" content="日本経済新聞 - ニュース・速報 最新情報"/><meta property="twitter:title" content="日本経済新聞 - ニュース・速報 最新情報"/><meta property="og:site_name" content="日本経済新聞"/><meta property="og:locale" content="ja_JP"/><meta name="description" content="日本経済新聞の電子版。日経や日経ＢＰの提供する経済、企業、国際、政治、マーケット、情報・通信、社会など各分野のニュース。ビジネス、マネー、IT、スポーツ、住宅、キャリアなどの専門情報も満載。"/><meta property="og:description" content="日本経済新聞の電子版。日経や日経ＢＰの提供する経済、企業、国際、政治、マーケット、情報・通信、社会など各分野のニュース。ビジネス、マネー、IT、スポーツ、住宅、キャリアなどの専門情報も満載。"/><meta name="x-f1h-custom-value" content="{"KFID0":"DS_WEBKAN","KFID2":"DS_TOP","DSR":1,"dp":"r","video":false,"is_gdpr":false}"/><link rel="canonical" href="https://www.nikkei.com"/><meta property="og:url" content="https://www.nikkei.com"/><meta property="fb:app_id" content="197388106979545"/><meta name="twitter:site" content="@nikkei"/><meta property="og:type" content="website"/><meta name="twitter:card" content="summary"/><meta property="og:image" content="https://www.nikkei.com/.resources/k-components/rectangle.rev-d54ea30.png"/><meta name="twitter:image" content="https://www.nikkei.com/.resources/k-components/square.rev-8e2c231.png"/><meta name="format-detection" content="telephone=no"/><link rel="apple-touch-icon" sizes="180x180" href="/.resources/k-components/180.rev-79352c3.png"/><link rel="apple-touch-icon" sizes="152x152" href="/.resources/k-components/152.rev-b71cf71.png"/><link rel="apple-touch-icon" sizes="144x144" href="/.resources/k-components/144.rev-7a5f8e5.png"/><link rel="apple-touch-icon" sizes="120x120" href="/.resources/k-components/120.rev-b692164.png"/><link rel="apple-touch-icon" sizes="76x76" href="/.resources/k-components/76.rev-0922226.png"/><link rel="apple-touch-icon-precomposed" href="/.resources/k-components/57.rev-eda4fb8.png"/><script>LUX=(function(){var a=("undefined"!==typeof(LUX)&&"undefined"!==typeof(LUX.gaMarks)?LUX.gaMarks:[]);var d=("undefined"!==typeof(LUX)&&"undefined"!==typeof(LUX.gaMeasures)?LUX.gaMeasures:[]);var j="LUX_start";var k=window.performance;var l=("undefined"!==typeof(LUX)&&LUX.ns?LUX.ns:(Date.now?Date.now():+(new Date())));if(k&&k.timing&&k.timing.navigationStart){l=k.timing.navigationStart}function f(){if(k&&k.now){return k.now()}var o=Date.now?Date.now():+(new Date());return o-l}function b(n){if(k){if(k.mark){return k.mark(n)}else{if(k.webkitMark){return k.webkitMark(n)}}}a.push({name:n,entryType:"mark",startTime:f(),duration:0});return}function m(p,t,n){if("undefined"===typeof(t)&&h(j)){t=j}if(k){if(k.measure){if(t){if(n){return k.measure(p,t,n)}else{return k.measure(p,t)}}else{return k.measure(p)}}else{if(k.webkitMeasure){return 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Date()));LUX.ac=[];LUX.cmd=function(a){LUX.ac.push(a)};LUX.init=function(){LUX.cmd(["init"])};LUX.send=function(){LUX.cmd(["send"])};LUX.addData=function(a,b){LUX.cmd(["addData",a,b])};LUX_ae=[];window.addEventListener("error",function(a){LUX_ae.push(a)});LUX_al=[];if("function"===typeof(PerformanceObserver)&&"function"===typeof(PerformanceLongTaskTiming)){var LongTaskObserver=new PerformanceObserver(function(c){var b=c.getEntries();for(var a=0;a<b.length;a++){var d=b[a];LUX_al.push(d)}});try{LongTaskObserver.observe({type:["longtask"]})}catch(e){}};</script><script type="module" src="/.resources/k2-top/main.rev-727ad7f4.js"></script><link rel="stylesheet" href="/.resources/k2-top/main.rev-6000bdcd.css" as="style"/></head><body><div class="adForLarge_a15byfch superAdBannerBaseStyle_sfc25dp" data-kad="true" data-kad-id="4982_6763"></div><k2-rtoaster class="base_b1b3hw84" data-k-rtoaster-type="notification"></k2-rtoaster><div data-kad="true" data-kad-id="16824_11719" class="mobileTopAdBaseStyle_memj2ay adForSmall_a1gazi7d"></div><header class="headerTop_hphfzkr headerTopAnonymous_h10zb40q"><k2-kite-header-tool-nav-provider><div class="headerToolNavContainer_h1itz95y"><div class="head_hugy8te"><div class="headUtilsContainer_h1xjee79"><div data-k2-component-name="k2-hamburger-nav"><div id="header-account-hamburger--mobile" class="itemHamburger_i1h1dwa3"><button type="button" class="hamburgerButton_h31l1r6 button_b3k06tb buttonIconContainerRow_b1115atl" aria-label="サイドメニューを開く" title="サイドメニューを開く" aria-controls="hamburger-navigation" aria-expanded="false"><i class="iconBody_i5okvap buttonIcon_b1wulzdb" style="background-image:url(https://www.nikkei.com/api/svg/v1/k-hamburger.rev-a293ee.svg?stroke=%23000000&fill=%23000000);width:24px;height:24px;min-width:24px"></i></button></div></div><div data-k2-component-name="k2-wgn-searchbox"><div class="k2KiteHeaderSearchElement_kcpuukd"><form class="container_c1withj2 searchEmpty_s1w247uz" action="/search" method="GET"><input class="searchForm_s1pi6qv2" type="search" autoComplete="off" placeholder="記事・株価を検索" name="keyword" value=""/><div class="searchActionsContainer_sfjpsrw"></div><button type="submit" class="searchButton_s1fpofzs button_b3k06tb buttonTextContainer_b1r8y0hx"><span class="buttonText_bhlvih7"><span class="searchButtonLabel_szb737u">検索</span></span></button></form></div></div><a class="searchButtonLink_s1l04cc9 button_b3k06tb" href="/search"><img alt="記事・株価を検索する" src="https://www.nikkei.com/api/svg/v1/k-search.rev-adf84c.svg?fill=%23333" class="searchButtonIcon_s11atr52"/></a></div><a class="headLogo_hniq3e8" href="/"><img src="/.resources/k-components/logo/masthead.rev-b8cf30e.png" class="logoImage_likza8z" alt="日本経済新聞トップ"/></a><nav class="headNavs_h1men6qz" aria-label="会員メニュー"><k2-kite-header-account-nav class="accountNav_a1i8t0o1"><a class="accountNavItem_a1pb0gw3 accountNavItemButton_aejtfta button_b3k06tb buttonSolid_b1i2z8b3 buttonSecondary_b1h480po" href="https://www.nikkei.com/r123/?n_cid=DSPRM1HR01" data-rn-track="header_register" data-rn-track-ga-action="header_register" data-rn-track-ga-category="registration_flow"><span class="buttonText_bhlvih7">お申し込み</span></a><a class="accountNavItem_a1pb0gw3 accountNavItemButton_aejtfta accountNavAnonymous_asdieia button_b3k06tb buttonSolid_b1i2z8b3 buttonPrimary_b14hsrqx" href="/login" data-rn-track="header_login" data-rn-track-ga-action="header_login" data-rn-track-ga-category="login_flow"><span class="buttonText_bhlvih7">ログイン</span></a></k2-kite-header-account-nav></nav></div><div class="toolNav_tarkamx"><div data-k2-component-name="k2-global-nav-header-pc-tools"><div class="headerToolNavStyle_h14bnrgf"><div class="headerToolNavItemStyle_hkvp7lf" data-rn-track="newspaper"><div class="badge_bt3wlxe"><i class="body_bmak3rd" style="top:8px;right:8px;z-index:1"></i><a class="headerToolNavItemBodyStyle_ht49ueq button_b3k06tb buttonT
CURL VariantsActionwww/non-www, trailing slash, HTTP→HTTPSREVIEW
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
Use 301 (permanent) instead of 302 (temporary)
BDomain Intelligencenikkei.com — via Japan Registry Services Co., Ltd., 31 years, 4 months oldREVIEW
EXPIRED
May 10, 2026
221 days
Issued by Amazon
31 years, 4 months
Registered May 9, 1995
Not enabled
Protects against DNS spoofing
Unknown
2600:9000:a615:e7f2:2ea1:cf50:5844:399f
Japan Registry Services Co., Ltd.
Expiry timeline
Recommended actions
- Domain has EXPIRED — renew immediately to avoid total site outage
- Enable DNSSEC to protect visitors from DNS spoofing
- Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
This domain expires on May 10, 2026. Domains that expire accidentally cause complete website downtime. Enable auto-renewal or renew manually now.
Domain expiry approaching — renew immediately and ensure auto-renew + alerting are configured.
Source: ICANN renewal policy
DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.
Without DNSSEC, an attacker who can poison your DNS can hijack your domain — and SSL certs alone don't stop them.
Learn more ▾ ▴
DNSSEC adds cryptographic signatures to DNS records, preventing forged responses from poisoning resolver caches. Without it, an attacker who controls the network path can redirect your domain to a malicious server before any HTTPS handshake happens. Most modern registrars (Cloudflare, Google Domains, Route 53) enable it with one toggle.
Source: ICANN / RFC 4033
The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.
Without registrar lock, an attacker who phishes your registrar credentials can transfer the domain in minutes — total brand hijack.
Learn more ▾ ▴
Registrar lock (clientTransferProhibited, clientUpdateProhibited, clientDeleteProhibited) requires extra verification before any transfer/update/delete. Every major registrar offers it free. Combined with 2FA on your registrar account, it's the strongest defense against domain hijacking.
Source: ICANN / domain-security best practice
BTLS Certificate Expiry & Recommendations221 days until leaf cert expires — 3 issues to addressREVIEW
Certificate validity
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
A+DNS Records2 A records, 184 ms lookupPASS
| A | 52.223.0.196, 35.71.146.174 |
| AAAA | 2600:9000:a615:e7f2:2ea1:cf50:5844:399f, 2600:9000:a717:b171:7f68:c620:6880:1f5a |
| CNAME | — |
| NS | i31dnsb0.nikkei.co.jp, ns00.vips.ne.jp, ns01.vips.ne.jp, robert.nikkei.co.jp, william.nikkei.co.jp |
| MX | — |
| TXT | google-site-verification=u5NXJGWKL2jJDjCd0Dp7dEKZjelXtHsD1MpSOrQNplU _globalsign-domain-verification=6GywlC8PVV6mLfL6ToMeVqCDeqFk9IDu2uEqmYPqx3 pardot701623=26c78fcad309de091b229e5a46b00606d0e5a076f62146c2a27fd54d687cc993 google-site-verification=sCHUfuyR1VWGybNH_H8NKpx8qoTOThsWvRdJEFFct3A |
| CAA | Lookup not available with standard resolver |
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
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'.
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)