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https://yomiuri.co.jp

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
85
GRADE
B
FIX
0
REVIEW
3
PASS
5
INFO
1
Probed from Amsterdam, Netherlands
301 Moved Permanently
Checks
9
5 PASS 3 REVIEW
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

B
URL Variants
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
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

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

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://yomiuri.co.jp/ → https://www.yomiuri.co.jp/

Consistent

B
TLS Certificate Expiry & Recommendations
216 days until leaf cert expires — 4 issues to address
REVIEW

Certificate validity

216
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
4 A records, 22 ms lookup
PASS
4 A records, 22 ms lookup
Info::
Resolves to 4 IPv4 address(es)
Got: 151.101.2.133, 151.101.66.133, 151.101.130.133, 151.101.194.133
Info::
No IPv6 (AAAA) records
Info::
3 nameserver(s) configured
Got: ns012-iqmq7r8nuaa0kh5m.i.d-53.jp, ns012-iqmq7r8nuaa0kh5m.i.d-53.net, ns012-iqmq7r8nuaa0kh5m.i.d-53.info
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::
SPF record present in TXT
Info::
DNS resolution time: 22 ms
Got: 22 ms
A151.101.2.133, 151.101.66.133, 151.101.130.133, 151.101.194.133
AAAA—
CNAME—
NSns012-iqmq7r8nuaa0kh5m.i.d-53.jp, ns012-iqmq7r8nuaa0kh5m.i.d-53.net, ns012-iqmq7r8nuaa0kh5m.i.d-53.info
MX
10 mx.yomiuri.co.jp
TXT
21r3qc7lc6p9mk81rkng8fpm73
8e7vqnoul3vinbdcagurt4njht
l3cf0vu18o3djd6a45hush6th7
l9kjop4k54tsq5h5jfpq8a87lh
n5426p09anoaemurtofmv6u2fg
DpYEQTjRC8FQcmwKfj6Sb7L5b3tOZR
_avj3belcus9tk2aquk06g46bfmvnden
_vmmzk6m1k8oxi8w5wga2zjqio6manzr
google-site-verification=8TvtzVBBYBWA-0OiG61y19JzojRBZPgdtpiXQLqnJQo
google-site-verification=Iryjevm0QhwfeG9POEtdDdyzGA2rDAXW34O95WGyyWw
google-site-verification=LBTBxm9mFneLD-QWQnQGqOgnHJH40Rqq5xqUtzEtyEU
google-site-verification=pdgdR1647EbyDK3fjfIBaMHPz4Cxqz9n7ecb0HBBKV4
google-site-verification=xQc0qcKq7qsvwWg1XRuw81pn_8RpBneNdpGPMQX8Ick
SPF v=spf1 +ip4:124.215.208.112/29 +ip4:61.127.199.48/29 include:8681351.spf06.hubsp...
CAALookup not available with standard resolver
Resolved in 22 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.

A
Redirect Chain
1 redirect(s), 44 ms total
PASS
1 redirect(s), 44 ms total
Info::
Single redirect
Got: https://yomiuri.co.jp → https://www.yomiuri.co.jp/ (301)
Info::
WWW normalization redirect

https://yomiuri.co.jp

23 ms · HTTP/1.1

301

https://www.yomiuri.co.jp/

20 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://yomiuri.co.jp30123 msHTTP/1.1
2https://www.yomiuri.co.jp/20020 msHTTP/1.1

See the visual redirect chain in the HTTP Probe tab →

A+
Crawlability
robots.txt present, sitemap with 8 URLs
PASS
robots.txt present, sitemap with 8 URLs
Info::
robots.txt is present
Got: 3470 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 8 entries
Info::
Sitemap index with 8 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 3470 B Sitemaps referenced 1 User-agents wget, Megalodon, libwww-perl, AmazonAdBot, PerplexityBot, ClaudeBot, Claude-User, Nutch, indexpert, Mechanize, meta-externalagent, meta-externalfetcher, ia_archiver, Scrapy, CCBot, Google-Extended, Claude-Web, Claude-SearchBot, facebookcatalog, omgili, curl, ChatGPT-User, GPTBot, Perplexity-ai, Perplexity-User, cohere-ai, facebookexternalhit, Webzio-Extended, Fess, Gensparkbot, bingbot, *, GoogleOther, Applebot-Extended, Bytespider, Diffbot, omgilibot, libwww, Java, OAI-SearchBot, AmazonBot, anthropic-ai, ICC-Crawler, FacebookBot, magpie-crawler, cohere-training-data-crawler, Timpibot Blocking No — crawling allowed
User-Agent: wget
Disallow: /

User-agent: Megalodon
Disallow: /

User-Agent: ia_archiver
Disallow: /

User-agent: libwww
Disallow: /

User-agent: curl
Disallow: /

User-agent: libwww-perl
Disallow: /

User-agent: Scrapy
Disallow: /

User-agent: Nutch
disallow: /

User-agent: indexpert
disallow: /

User-agent: Fess
Disallow: /

User-agent: Mechanize
Disallow: /

User-agent: Java
Disallow: /

User-agent: CCBot
Disallow: /

User-agent: OAI-SearchBot
Disallow: /
Allow: /teen/
Allow: /kyoiku/support

User-agent: ChatGPT-User
Disallow: /

User-agent: GPTBot
Disallow: /

User-agent: Google-Extended
Disallow: /
Allow: /news
Allow: /*2026
Disallow: /*result*2
Disallow: /*2*result
Disallow: /adv
Disallow: /assets/*2
Disallow: /bosai-nippon
Disallow: /comic/*2
Disallow: /coupon/*2
Disallow: /crossword
Disallow: /culture/book/reviews
Disallow: /culture/book/columns
Disallow: /culture/hochi
Disallow: /culture/hulu
Disallow: /culture/nagaieye
Disallow: /fukayomi/toyokeizai
Disallow: /giants/archive
Disallow: /hakone-ekiden/history
Disallow: /hobby/atcars/impression
Disallow: /hobby/atcars/info
Disallow: /hobby/travel/ryokou-select
Disallow: /igoshougi/kisei/kansenki
Disallow: /igoshougi/ryuoh/kansenki
Disallow: /images/*2
Disallow: /kodomo/sheet/
Disallow: /kyoiku/support/ranger
Disallow: /life/food-column
Disallow: /life/horoscope
Disallow: /life/online
Disallow: /life/recipe
Disallow: /market/*202
Disallow: /media/*202
Disallow: /medical/brain
Disallow: /medical/men
Disallow: /neko-pitcher
Disallow: /novel/*2
Disallow: /nyushi/*2
Disallow: /otekomachi
Disallow: /photograph/kyoshitsu
Disallow: /photograph/photogp
Disallow: /photograph/ypc
Disallow: /photograph/ypcex
Disallow: /pluralphoto
Disallow: /r/ims/*20
Disallow: /s/ims/*20
Disallow: /serial/earth
Disallow: /serial/webkiryu
Disallow: /shimen/*20
Disallow: /slides/*20
Disallow: /slitherlink
Disallow: /sponsored
Disallow: /stream/*20
Disallow: /sudoku/*20
Disallow: /weather/*20
Disallow: /world/nieman
Disallow: /ybooks
Disallow: /yomidr/*2
Disallow: /yomiuri333


User-agent: GoogleOther
Disallow: /

User-agent: AmazonBot
Disallow: /

User-agent: AmazonAdBot
Allow: /

User-agent: anthropic-ai
Disallow: /

User-agent: Claude-Web
Disallow: /

User-agent: ICC-Crawler
Disallow: /

User-agent: Applebot-Extended
Disallow: /

User-agent: Bytespider
Disallow: /

User-agent: PerplexityBot
Disallow: /

User-agent: Perplexity-ai
Disallow: /

User-agent: Perplexity-User
Disallow: /

User-agent: ClaudeBot
Disallow: /

User-agent: Claude-SearchBot
Disallow: /

User-agent: Claude-User
Disallow: /

User-agent: cohere-ai
Disallow: /

User-agent: cohere-training-data-crawler
Disallow: /

User-agent: Diffbot
Disallow: /

User-agent: FacebookBot
Disallow: /

User-agent: facebookexternalhit
Disallow: /
Allow: /teen/
Allow: /kyoiku/support

User-agent: Gensparkbot
Disallow: /

User-agent: magpie-crawler
Disallow: /

User-agent: meta-externalagent
Disallow: /
Allow: /teen/
Allow: /kyoiku/support

User-agent: meta-externalfetcher
Disallow: /
Allow: /teen/
Allow: /kyoiku/support

User-agent: facebookcatalog
Disallow: /
Allow: /teen/
Allow: /kyoiku/support

User-agent: omgili
Disallow: /

User-agent: omgilibot
Disallow: /

User-agent: Timpibot
Disallow: /

User-agent: Webzio-Extended
Disallow: /

User-agent: bingbot
Disallow: /web-search
Disallow: /bosai-nippon/search

User-agent: *
Disallow: /wp-admin/
Disallow: /adv/*.swf$
Disallow: /member/


Sitemap: https://www.yomiuri.co.jp/sitemap.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 8 entries Valid XML Yes
Child Sitemaps:
A+
HTTP Probe Timing
Total 22 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
15 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
1 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
6 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
23 ms
Total Time Total request time from DNS lookup through full response.
23 ms

Connection waterfall

DNS Lookup 15 ms TCP Connect 1 ms TLS Handshake 6 ms Server Processing 1 ms Content Transfer 0 ms
A+
CDN & Delivery
Fastly (HIT)
PASS
Fastly (HIT)
Info::
Site is served via Fastly CDN
Got: x-served-by: cache-rtm-ehrd2290047-RTM
Info::
CDN cache status: HIT
CDN Detected: Fastly
Provider Fastly Cache Status HIT Evidence x-served-by: cache-rtm-ehrd2290047-RTM
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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