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https://so-net.ne.jp

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
79
GRADE
C
FIX
1
REVIEW
5
PASS
2
INFO
1
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
2 PASS 5 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
Redirect Chain
1 redirect(s), 1430 ms total
REVIEW
1 redirect(s), 1430 ms total
Info::
Single redirect
Got: https://so-net.ne.jp → https://www.so-net.ne.jp:443/ (301)
Info::
WWW normalization redirect
Warning::
Redirect overhead: 1430 ms total
Got: 1430 ms

https://so-net.ne.jp

869 ms · HTTP/1.1

301

https://www.so-net.ne.jp:443/

561 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://so-net.ne.jp301869 msHTTP/1.1awselb/2.0
2https://www.so-net.ne.jp:443/200561 msHTTP/1.1AmazonS3

See the visual redirect chain in the HTTP Probe tab →

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.so-net.ne.jp/
200https://so-net.ne.jp/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://so-net.ne.jp/ → https://www.so-net.ne.jp:443/

Consistent

B
HTTP Probe Timing
Total 1122 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
REVIEW
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
249 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.
654 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
1.12 s
Total Time Total request time from DNS lookup through full response.
1.12 s

Connection waterfall

DNS Lookup 249 ms TCP Connect 1 ms TLS Handshake 654 ms Server Processing 218 ms Content Transfer 0 ms
B
TLS Certificate Expiry & Recommendations
140 days until leaf cert expires — 4 issues to address
REVIEW

Certificate validity

140
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, 251 ms lookup
PASS
2 A records, 251 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 76.223.23.197, 75.2.3.28
Info::
No IPv6 (AAAA) records
Info::
2 nameserver(s) configured
Got: zns4.so-net.ne.jp, zns3.so-net.ne.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::
SPF record present in TXT
Warning::
DNS resolution is slow (251 ms)
Slow DNS adds latency to every page load. Consider a faster DNS provider.
Got: 251 ms
A76.223.23.197, 75.2.3.28
AAAA—
CNAME—
NSzns4.so-net.ne.jp, zns3.so-net.ne.jp
MX
10 ms-ext91.so-net.ne.jp
TXT
SPF v=spf1 ip4:202.213.234.0/24 exists:%{i}.spf.so-net.ne.jp include:spf.xspmail.jp ...
google-site-verification=pVsb8nSWikbWPlAkMtXH0jpXOAVYehd7KN1uVH2MSOI
google-site-verification=FXkxu4CnPvL3VPwV4TFsrsvmz2NzLojX9I4NrwxOnLs
google-site-verification=1eitZvOdW1R9bcOm-QKKWJnhMauSsoT6qjeem94QB_A
CAALookup not available with standard resolver
Resolved in 251 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.

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

A+
Crawlability
robots.txt present, sitemap with 1 URLs
PASS
robots.txt present, sitemap with 1 URLs
Info::
robots.txt is present
Got: 1063 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 1 entries
Info::
Sitemap index with 1 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 1063 B Sitemaps referenced 2 User-agents * Blocking No — crawling allowed
User-agent: *
Disallow: /s-taikyu/msgbd/
Disallow: /pcpinfo/download/
Disallow: /business/access/bitwarp/sen/
Disallow: /omn-js/
Disallow: /search/
Disallow: /antlers/mb/
Disallow: /antlers/sp/member/
Disallow: /storygate/contact/
Disallow: /training/sonetore/service/
Disallow: /sso/portal/cgi-bin/login.cgi
Disallow: /point/game/index.cgi
Disallow: /fortunes/
Disallow: /uranai/
Disallow: /webmail/accessmailbox/login.xhtml
Disallow: /webmail/accessmailbox/mobile/login.xhtml
Disallow: /brand/creativeroutine/
Disallow: /access/hikari/select/
Disallow: /access/hikari/10g/select/
Disallow: /access/hikari/au/area/search.html
Disallow: /access/*?a8=
Disallow: /access/*?SmRint=
Disallow: /access/*?refSmRcid=
Disallow: /access/*?type=
Disallow: /access/*?business=
Disallow: /access/*?btn=
Disallow: /gourmet/
Disallow: /blog/
Disallow: /storygate/
Disallow: /golden/
Disallow: /account/onetime_auth/
Disallow: /signup/sst/
Disallow: /forms/simple/


Sitemap: https://www.so-net.ne.jp/sitemapIndex.xml
Sitemap: https://www.so-net.ne.jp/access/images_sitemap.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 1 entries Valid XML Yes
Child Sitemaps:
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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