Skip to content
https://www.smartg4.com

Infrastructure

· 17 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
85
GRADE
B
FIX
0
REVIEW
7
PASS
10
INFO
0
Probed from Santa Clara, United States
301 Moved Permanently
Checks
17
10 PASS 7 REVIEW
B
DNSSEC
Unsigned (DNSSEC not deployed)
REVIEW
Unsigned (DNSSEC not deployed)
Info::
DNSSEC is not deployed
The zone is not DNSSEC-signed. Users on validating resolvers (Cloudflare 1.1.1.1, Quad9 9.9.9.9, growing default in mobile resolvers) get no protection against DNS spoofing for this domain. Most registrars now offer DNSSEC at a single click; consider enabling it for sites where authenticity matters (banking, healthcare, government).
B
CAA Records
No CAA records (any CA may issue certificates)
REVIEW
No CAA records (any CA may issue certificates)
Info::
No CAA records published
Without CAA records, any publicly-trusted CA can issue certificates for this domain. Adding a CAA record (`yourdomain. IN CAA 0 issue "letsencrypt.org"`) restricts issuance to CAs you authorize. Required by CAB Forum baseline since 2017; the default of 'any CA' is widely supported but is the broader attack surface for issuance fraud.
B
Reverse DNS
0/1 IPs match cert SAN
REVIEW
0/1 IPs match cert SAN
Info::
PTR for 160.153.0.223 does not match any cert SAN: 223.0.153.160.host.secureserver.net
Common when behind a CDN or shared hosting (PTR points at the provider's hostname). Mismatch can also affect mail deliverability if this IP sends email -- many MTAs reject mail when forward+reverse DNS disagree.
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 redirects to HTTPS permanently
Got: HTTP 301

www / non-www

200https://www.smartg4.com/
200https://smartg4.com/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://www.smartg4.com/ → https://www.smartg4.com/

Consistent

B
TLS Certificate Expiry & Recommendations
34 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

34
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
Operational Status Page
No status page link detected
REVIEW
No status page link detected
Info::
No operational status page link detected
Status pages communicate planned maintenance and incidents to users -- a hallmark of operationally-mature services. Most SaaS teams publish one via Atlassian Statuspage, Instatus, BetterUptime, or a self-hosted Cachet. Smaller sites legitimately don't need one; flagged as Info, not a failure.
A
DNS Records
1 A records, 26 ms lookup
PASS
1 A records, 26 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 160.153.0.223
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
No IPv6 (AAAA) records
Warning::
CNAME record at zone apex
A CNAME at the zone apex can break MX and NS records. Use ALIAS/ANAME or A records instead.
Got: smartg4.com
Info::
2 nameserver(s) configured
Got: ns36.domaincontrol.com, ns35.domaincontrol.com
Info::
No MX records — email not configured via DNS
Info::
SPF record present in TXT
Info::
DNS resolution time: 26 ms
Got: 26 ms
A160.153.0.223
AAAA—
CNAMEsmartg4.com
NSns36.domaincontrol.com, ns35.domaincontrol.com
MX—
TXT
SPF v=spf1 include:secureserver.net -all
google-site-verification=dfJZ7YxCZ_zdaQBQgGKFYCOyqRayqbAgPj9XWR1q6mQ
CAALookup not available with standard resolver
Resolved in 26 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

A CNAME at the zone apex can break MX and NS records. Use ALIAS/ANAME or A records instead.

Why this matters

CNAME at the apex (example.com) breaks every other apex record (MX, TXT, NS) — DNS-protocol violation per RFC 1034.

Learn more ▾

RFC 1034 forbids CNAME alongside other records at the same name. Some DNS providers offer ALIAS / ANAME / flattened-CNAME records that work around this — use those instead. Otherwise apex-level CNAME breaks email (no MX), domain ownership verification (no TXT), and more.

Source: RFC 1034

A+
Subdomain Takeover
No subdomain takeover risk detected
PASS
No subdomain takeover risk detected
Info::
CNAME does not point at a known takeover-able service
A+
Multi-Resolver DNS Speed
Mean 9ms across 3 resolvers (spread 9ms)
PASS
Mean 9ms across 3 resolvers (spread 9ms)
Info::
Cloudflare: 5ms
Got: 5ms via 1.1.1.1:53
Info::
Quad9: 8ms
Got: 8ms via 9.9.9.9:53
Info::
Google: 14ms
Got: 14ms via 8.8.8.8:53
A
Redirect Chain
1 redirect(s), 327 ms total
PASS
1 redirect(s), 327 ms total
Info::
Single redirect
Got: https://www.smartg4.com → https://smartg4.com/ (301)
Info::
WWW normalization redirect

https://www.smartg4.com

174 ms · HTTP/1.1

301

https://smartg4.com/

153 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://www.smartg4.com301174 msHTTP/1.1cloudflare
2https://smartg4.com/200153 msHTTP/1.1cloudflare

See the visual redirect chain in the HTTP Probe tab →

A+
Crawlability
robots.txt present, sitemap with 144 URLs
PASS
robots.txt present, sitemap with 144 URLs
Info::
robots.txt is present
Got: 4413 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 144 entries
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 4413 B Sitemaps referenced 1 User-agents DuckDuckBot, anthropic-ai, SonixAI, Mail.RU_Bot, WhatsApp, Googlebot-Image, GPTBot, Yeti, Daumoa, cohere-ai, Applebot-Extended, Diffbot, NaverBot, BraveBot, ChatGPT-User, OAI-SearchBot, Sogou web spider, PetalBot, Googlebot-News, Twitterbot, Baiduspider-mobile, coccocbot-web, OnetSzukaj, Googlebot, Bingbot, DeepSeekBot, Amazonbot, MojeekBot, ClaudeBot, LinkedInBot, Slurp, Grok, MistralBot, omgilibot, Ecosia, Slackbot, Discordbot, facebookexternalhit, meta-externalagent, Bytespider, Baiduspider, ia_archiver, PerplexityBot, Gemini, Applebot, Operator, Baiduspider-render, SeznamBot, YouBot, coccocbot-image, Qwantify, TelegramBot, *, FacebookBot, iaskspider, Pinterestbot, YandexBot, Timpibot, CCBot, Claude-Web, Google-Extended, 360Spider Blocking No — crawling allowed
# robots.txt for smartg4.com
# Last updated: 2026-09-21 — full AI + global search engine coverage

# ── Standard search engines ──────────────────────────────────────────────────
User-agent: Googlebot
Allow: /

User-agent: Bingbot
Allow: /

User-agent: Slurp
Allow: /

User-agent: DuckDuckBot
Allow: /

# AI crawlers — ChatGPT / OpenAI
User-agent: GPTBot
Allow: /

User-agent: ChatGPT-User
Allow: /

# AI crawlers — Claude / Anthropic
User-agent: ClaudeBot
Allow: /

User-agent: anthropic-ai
Allow: /

User-agent: Claude-Web
Allow: /

# AI crawlers — Perplexity
User-agent: PerplexityBot
Allow: /

# AI crawlers — Google Gemini
User-agent: Google-Extended
Allow: /

User-agent: Gemini
Allow: /

# AI crawlers — Meta AI
User-agent: meta-externalagent
Allow: /

User-agent: FacebookBot
Allow: /

# AI crawlers — Cohere
User-agent: cohere-ai
Allow: /

# AI crawlers — DeepSeek
User-agent: DeepSeekBot
Allow: /

# AI crawlers — ByteDance / TikTok AI
User-agent: Bytespider
Allow: /

# AI crawlers — Apple Intelligence
User-agent: Applebot-Extended
Allow: /

User-agent: Applebot
Allow: /

# AI crawlers — Baidu AI
User-agent: Baiduspider
Allow: /

# AI crawlers — Yandex AI (Alice)
User-agent: YandexBot
Allow: /

# AI crawlers — xAI / Grok
User-agent: Grok
Allow: /

# AI crawlers — Mistral AI
User-agent: MistralBot
Allow: /

# AI crawlers — Amazon Alexa / Amazonbot
User-agent: Amazonbot
Allow: /

# AI crawlers — OAI SearchBot (OpenAI search)
User-agent: OAI-SearchBot
Allow: /

# AI crawlers — Operator (OpenAI Operator agent)
User-agent: Operator
Allow: /

# AI crawlers — Diffbot (AI knowledge graph)
User-agent: Diffbot
Allow: /

# AI crawlers — Common Crawl (used by many LLMs for training)
User-agent: CCBot
Allow: /

# AI crawlers — SonixAI
User-agent: SonixAI
Allow: /

# AI crawlers — Timpibot (AI search)
User-agent: Timpibot
Allow: /

# AI crawlers — YouBot (You.com AI search)
User-agent: YouBot
Allow: /

# AI crawlers — Omgilibot (AI data)
User-agent: omgilibot
Allow: /

# AI crawlers — iaskspider (iAsk AI)
User-agent: iaskspider
Allow: /

# Standard search engines — Yahoo / Slurp
User-agent: Slurp
Allow: /

# Standard search engines — Naver (South Korea) — Yeti
User-agent: Yeti
Allow: /

User-agent: NaverBot
Allow: /

# Standard search engines — Baidu (China)
User-agent: Baiduspider-render
Allow: /

# Standard search engines — Sogou (China)
User-agent: Sogou web spider
Allow: /

# Standard search engines — 360 Spider (China)
User-agent: 360Spider
Allow: /

# Standard search engines — Shenma / UC Web (China mobile)
User-agent: Baiduspider-mobile
Allow: /

# Standard search engines — Seznam (Czech Republic)
User-agent: SeznamBot
Allow: /

# Standard search engines — Mojeek (UK privacy search)
User-agent: MojeekBot
Allow: /

# Standard search engines — Brave Search
User-agent: BraveBot
Allow: /

# Standard search engines — Ecosia (Germany, green search)
User-agent: Ecosia
Allow: /

# Standard search engines — Qwant (France)
User-agent: Qwantify
Allow: /

# Standard search engines — Petal Search / Huawei (Arabic + Asian markets)
User-agent: PetalBot
Allow: /

# Standard search engines — Cốc Cốc (Vietnam)
User-agent: coccocbot-web
Allow: /

User-agent: coccocbot-image
Allow: /

# Standard search engines — Daum / Kakao (South Korea)
User-agent: Daumoa
Allow: /

# Standard search engines — Mail.ru / Go.Mail.ru (Russia)
User-agent: Mail.RU_Bot
Allow: /

# Standard search engines — Onet.pl (Poland)
User-agent: OnetSzukaj
Allow: /

# Standard search engines — Internet Archive / Wayback Machine
User-agent: ia_archiver
Allow: /

# Standard search engines — Googlebot News
User-agent: Googlebot-News
Allow: /

# Standard search engines — Googlebot Image
User-agent: Googlebot-Image
Allow: /

# Social media crawlers — allow for rich previews
User-agent: facebookexternalhit
Allow: /

User-agent: Twitterbot
Allow: /

User-agent: LinkedInBot
Allow: /

User-agent: WhatsApp
Allow: /

User-agent: TelegramBot
Allow: /

User-agent: Pinterestbot
Allow: /

User-agent: Slackbot
Allow: /

User-agent: Discordbot
Allow: /

# All other crawlers — allow public pages, block private paths
User-agent: *
Allow: /
Disallow: /api/
Disallow: /private/

Sitemap: https://smartg4.com/sitemap.xml
sitemap.xml 200 OK
Type URL Set URLs 144 entries Valid XML Yes
Sample URLs:
A+
Domain Intelligence
smartg4.com — via GoDaddy.com, LLC, 14 years, 11 months old, hosted on Cloudflare
PASS
smartg4.com — via GoDaddy.com, LLC, 14 years, 11 months old, hosted on Cloudflare
Info::
Domain registered until Jan 17, 2027 (3 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: GoDaddy.com, LLC
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: Cloudflare
Got: AS209242
Domain expiry

90 days

January 17, 2027

SSL certificate

34 days

Issued by Google Trust Services

Domain age

14 years, 11 months

Registered January 17, 2012

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Cloudflare

ASN AS209242

160.153.0.223

Registrar

GoDaddy.com, LLC

Unlocked 2 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Renew the domain or enable auto-renewal to prevent accidental expiry
  • Enable DNSSEC to protect visitors from DNS spoofing
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar GoDaddy.com, LLC
Created January 17, 2012 (14 years, 11 months ago)
Expires January 17, 2027 (3 months)
Last Updated August 15, 2026
Name Servers ns35.domaincontrol.com, ns36.domaincontrol.com
DNSSEC Not enabled
Hosting
IP Address 160.153.0.223
ASN AS209242 (CLOUDFLARESPECTRUM - Cloudflare London, LLC, US)
Provider Cloudflare
Data source: rdap (0.2s)

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 173 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
18 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
3 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
20 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
174 ms
Total Time Total request time from DNS lookup through full response.
174 ms

Connection waterfall

DNS Lookup 18 ms TCP Connect 3 ms TLS Handshake 20 ms Server Processing 133 ms Content Transfer 0 ms
A
CDN & Delivery
Document and assets on Cloudflare
PASS
Document and assets on Cloudflare
Info::
Document is served via Cloudflare CDN (edge: SJC)
Got: cf-ray: a4806722dae03911-SJC
Info::
CDN cache status: DYNAMIC
Info::
Assets on Cloudflare: smartg4.com (assets: 48), cache DYNAMIC
Got: cf-ray: a4806b1a9bd11739-SJC
Document served via CDN: Cloudflare
Provider Cloudflare Cache Status DYNAMIC Evidence cf-ray: a4806722dae03911-SJC

Asset hosts on a CDN

  • smartg4.com — Cloudflare · assets: 48 · Cache Status: DYNAMIC

Other asset hosts

  • fonts.googleapis.com — assets: 2 · below probe threshold
  • img1.wsimg.com — assets: 1 · below probe threshold
A+
CDN Cache Observability
Cache state: DYNAMIC
PASS
Cache state: DYNAMIC
Info::
CDN cache state observable via 1 header(s)
Got: cf-cache-status=DYNAMIC
A+
Health Check Endpoint
Health endpoint at https://www.smartg4.com/health (HTTP 200)
PASS
Health endpoint at https://www.smartg4.com/health (HTTP 200)
Info::
Public health endpoint at https://www.smartg4.com/health
Got: https://www.smartg4.com/health
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

Send Feedback