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https://lit.link

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
88
GRADE
B
FIX
0
REVIEW
3
PASS
6
INFO
0
Probed from New York, United Stated
200 OK
Checks
9
6 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
TLS Certificate Expiry & Recommendations
54 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

54
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
B
CDN & Delivery
Google Cloud CDN
REVIEW
Google Cloud CDN
Info::
Site is served via Google Cloud CDN CDN
Got: via: 1.1 google
CDN Detected: Google Cloud CDN
Provider Google Cloud CDN Evidence via: 1.1 google
A
DNS Records
1 A records, 352 ms lookup
PASS
1 A records, 352 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 34.149.151.84
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
No IPv6 (AAAA) records
Info::
5 nameserver(s) configured
Got: ns5.xserver.jp, ns2.xserver.jp, ns4.xserver.jp, ns1.xserver.jp, ns3.xserver.jp
Info::
5 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 (352 ms)
Slow DNS adds latency to every page load. Consider a faster DNS provider.
Got: 352 ms
A34.149.151.84
AAAA
CNAME
NSns5.xserver.jp, ns2.xserver.jp, ns4.xserver.jp, ns1.xserver.jp, ns3.xserver.jp
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
google-site-verification=zEA5yRjt-1gY78hR7W3YiUFsQfCdujmFG17dmxr8MJs
SPF v=spf1 include:spf.am.arara.com include:_spf.google.com ~all
google-site-verification=cZdvgxSojOoRiCiy6xweAWRm--ttJP9VqH_GxNwe1c8
facebook-domain-verification=628g85wncjpf116tpjijpo5c4sn990
google-site-verification=ZuWpacJj79jfZSg5LrqptUEs8vK-xJl_q6whqfS7vrU
CAALookup not available with standard resolver
Resolved in 352 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.

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+
Redirect Chain
No redirects — direct access
PASS
No redirects — direct access
Info::
No redirects — direct access
Got: https://lit.link

https://lit.link

579 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://lit.link200579 msHTTP/1.1Google Frontend
A
Crawlability
robots.txt present, sitemap with 0 URLs
PASS
robots.txt present, sitemap with 0 URLs
Info::
robots.txt is present
Got: 59 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
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.

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 59 B Sitemaps referenced 0 User-agents * Blocking No — crawling allowed
# https://www.robotstxt.org/robotstxt.html

User-agent: *


sitemap.xml 200 OK
Type URL Set URLs 0 entries Valid XML Yes
A+
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
PASS
www/non-www, trailing slash, HTTP→HTTPS
Info::
www/non-www redirect configured correctly (preferred: non-www)
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

301https://www.lit.link/
200https://lit.link/

Preferred variant: non-www

HTTP → HTTPS

301http://lit.link/ https://lit.link:443/

Consistent

A+
Domain Intelligence
lit.link — via GMO Internet, Inc. d/b/a Onamae.com, 5 years, 8 months old, hosted on Google Cloud
PASS
lit.link — via GMO Internet, Inc. d/b/a Onamae.com, 5 years, 8 months old, hosted on Google Cloud
Info::
Domain registered until Sep 15, 2030 (4 years, 5 months remaining)
Info::
DNSSEC is not enabled
DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.
Info::
Registrar: GMO Internet, Inc. d/b/a Onamae.com
Warning::
Registrar lock is NOT enabled
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.
Info::
Hosting: Google Cloud
Got: AS396982
Domain expiry

1521 days

September 15, 2030

SSL certificate

54 days

Issued by Google Trust Services

Domain age

5 years, 8 months

Registered September 15, 2020

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Google Cloud

ASN AS396982

34.149.151.84

Registrar

GMO Internet, Inc. d/b/a Onamae.com

Unlocked 5 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Enable DNSSEC to protect visitors from DNS spoofing
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar GMO Internet, Inc. d/b/a Onamae.com
Created September 15, 2020 (5 years, 8 months ago)
Expires September 15, 2030 (4 years, 5 months)
Last Updated August 21, 2024
Name Servers ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp, ns5.xserver.jp
DNSSEC Not enabled
Hosting
IP Address 34.149.151.84
ASN AS396982 (GOOGLE-CLOUD-PLATFORM - Google LLC, US)
Provider Google Cloud
Data source: rdap (0.4s)

DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.

Why this matters

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.

Why this matters

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

A
HTTP Probe Timing
Total 610 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
361 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
7 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
11 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
592 ms
Total Time Total request time from DNS lookup through full response.
610 ms

Connection waterfall

DNS Lookup 361 ms TCP Connect 7 ms TLS Handshake 11 ms Server Processing 213 ms Content Transfer 18 ms
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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