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https://envoyer.io

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
81
GRADE
B
FIX
1
REVIEW
2
PASS
5
INFO
1
Probed from Santa Clara, United States
200 OK
Checks
9
5 PASS 2 REVIEW 1 FIX
F
IPv6 Readiness
Action
IPv6 records exist but unreachable
FIX
IPv6 records exist but unreachable
Warning::
IPv6 DNS records exist but server is not reachable
Having AAAA records but an unreachable server is worse than no AAAA — clients may experience delays before falling back to IPv4.
Got: 2606:4700::6812:17c0, 2606:4700::6812:16c0
Info::
IPv6 connection error
Got: dial tcp6 [2606:4700::6812:17c0]:443: connect: network is unreachable
IPv6 Misconfigured
AAAA Records 2606:4700::6812:17c0, 2606:4700::6812:16c0 Connection UNREACHABLE

Having AAAA records but an unreachable server is worse than no AAAA — clients may experience delays before falling back to IPv4.

Why this matters

Advertising IPv6 (AAAA records) without a reachable server means IPv6-preferring clients silently fail every connection.

Learn more ▾

Modern browsers prefer IPv6 if AAAA exists (Happy Eyeballs algorithm). If the IPv6 server isn't reachable, browsers fall back to IPv4 — but with seconds of added latency per request. Either fix IPv6 reachability or remove the AAAA records.

Source: RFC 8305 (Happy Eyeballs)

B
Crawlability
robots.txt present, no sitemap
REVIEW
robots.txt present, no sitemap
Info::
robots.txt is present
Got: 24 bytes
Info::
No sitemap.xml found
A sitemap helps search engines discover and index your pages more efficiently.
Info::
robots.txt does not reference a sitemap
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

A sitemap helps search engines discover and index your pages more efficiently.

Why this matters

No sitemap.xml — Google relies on crawl-graph discovery alone, slowing indexing of deep or fresh URLs.

Learn more ▾

A sitemap accelerates Google's discovery of new and updated content. Most CMSes auto-generate one; static-site frameworks need a build-step plugin. Reference it from robots.txt and submit in Search Console to confirm Google can fetch it.

Source: sitemaps.org / Google Search Central

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 24 B Sitemaps referenced 0 User-agents * Blocking No — crawling allowed
User-agent: *
Disallow:
sitemap.xml No sitemap found

No sitemap found

Adding a sitemap helps search engines discover your pages.

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

Certificate validity

78
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
A+
DNS Records
2 A records, 10 ms lookup
PASS
2 A records, 10 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 104.18.23.192, 104.18.22.192
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2606:4700::6812:17c0, 2606:4700::6812:16c0
Info::
2 nameserver(s) configured
Got: carol.ns.cloudflare.com, jay.ns.cloudflare.com
Info::
2 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::
No SPF record found in TXT records
SPF helps prevent email spoofing. Add a TXT record starting with 'v=spf1'.
Info::
DNS resolution time: 10 ms
Got: 10 ms
A104.18.23.192, 104.18.22.192
AAAA2606:4700::6812:17c0, 2606:4700::6812:16c0
CNAME—
NScarol.ns.cloudflare.com, jay.ns.cloudflare.com
MX
10 in1-smtp.messagingengine.com
20 in2-smtp.messagingengine.com
TXT—
CAALookup not available with standard resolver
Resolved in 10 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.

SPF helps prevent email spoofing. Add a TXT record starting with 'v=spf1'.

Why this matters

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)

A+
Redirect Chain
No redirects — direct access
PASS
No redirects — direct access
Info::
No redirects — direct access
Got: https://envoyer.io

https://envoyer.io

136 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://envoyer.io200136 msHTTP/1.1cloudflare
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.envoyer.io/
200https://envoyer.io/

Preferred variant: non-www

HTTP → HTTPS

301http://envoyer.io/ → https://envoyer.io/

Consistent

A+
HTTP Probe Timing
Total 154 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
29 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
4 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.
154 ms
Total Time Total request time from DNS lookup through full response.
154 ms

Connection waterfall

DNS Lookup 29 ms TCP Connect 4 ms TLS Handshake 11 ms Server Processing 110 ms Content Transfer 1 ms
A
CDN & Delivery
Cloudflare (DYNAMIC)
PASS
Cloudflare (DYNAMIC)
Info::
Site is served via Cloudflare CDN (edge: SJC)
Got: cf-ray: 9eff7544eab599a0-SJC
Info::
CDN cache status: DYNAMIC
CDN Detected: Cloudflare
Provider Cloudflare Cache Status DYNAMIC Evidence cf-ray: 9eff7544eab599a0-SJC
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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