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https://metamask.io

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
98
GRADE
A+
FIX
0
REVIEW
1
PASS
8
INFO
0
Probed from Madrid, Spain
200 OK
Checks
9
8 PASS 1 REVIEW
B
TLS Certificate Expiry & Recommendations
68 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

68
days left
0d 30d 60d 90d+

Recommended actions

  • Extend HSTS max-age to at least 31536000 (1 year) to meet the preload list criteria
  • 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, 52 ms lookup
PASS
2 A records, 52 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 172.64.147.181, 104.18.40.75
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2a06:98c1:3101::6812:284b, 2a06:98c1:3100::ac40:93b5
Info::
2 nameserver(s) configured
Got: langston.ns.cloudflare.com, adelaide.ns.cloudflare.com
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: 52 ms
Got: 52 ms
A172.64.147.181, 104.18.40.75
AAAA2a06:98c1:3101::6812:284b, 2a06:98c1:3100::ac40:93b5
CNAME—
NSlangston.ns.cloudflare.com, adelaide.ns.cloudflare.com
MX
1 smtp.google.com
TXT
google-site-verification=YtaNNt_XG9lp97tHolcYR0NqdyhSkGWdfpMCFUVru4U
SPF v=spf1 include:_spf.google.com include:mailgun.org include:4795067.spf01.hubspot...
google-site-verification=wZKzd-THRf5G2HJgdiwxNVdgWUzC7rDouF9iQ-vOOlo
miro-verification=06aec59d07be7d0932c66052bef4e0ec9f560256
google-gws-recovery-domain-verification=61510561
google-site-verification=SNHFOPocvIFZ-TWTBZmyJVV2h69GGrm2dvsyWJQTLTs
google-site-verification=Y6oJ8FmCqgthVbVXmD887zcwGohYjgUaCa3miLVMQYY
00371316
OSSRH-94282
google-site-verification=cCJ7DbV5ygpeEX7pYsZSgkfwMgIjUiTLjLDvEita4mM
CAALookup not available with standard resolver
Resolved in 52 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
No redirects — direct access
PASS
No redirects — direct access
Info::
No redirects — direct access
Got: https://metamask.io

https://metamask.io

216 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://metamask.io200216 msHTTP/1.1cloudflare
A+
IPv6 Readiness
IPv6 reachable (17 ms)
PASS
IPv6 reachable (17 ms)
Info::
IPv6 is configured and reachable at 2a06:98c1:3101::6812:284b, 2a06:98c1:3100::ac40:93b5
Got: 17 ms connect
IPv6 Ready
AAAA Records 2a06:98c1:3101::6812:284b, 2a06:98c1:3100::ac40:93b5 Connection Reachable (17 ms)
A+
Crawlability
robots.txt present, sitemap with 5 URLs
PASS
robots.txt present, sitemap with 5 URLs
Info::
robots.txt is present
Got: 144 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 5 entries
Info::
Sitemap index with 5 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 144 B Sitemaps referenced 1 User-agents * Blocking No — crawling allowed
User-Agent: *
Allow: /llms.txt
Disallow: /storybook
Disallow: /playground
Disallow: /stylesheet

Sitemap: https://metamask.io/sitemap-index.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 5 entries Valid XML Yes
Child Sitemaps:
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.metamask.io/
200https://metamask.io/

Preferred variant: non-www

HTTP → HTTPS

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

Consistent

A
Domain Intelligence
metamask.io — via Cloudflare, Inc, 10 years, 11 months old
PASS
metamask.io — via Cloudflare, Inc, 10 years, 11 months old
Warning::
Domain expires in 70 days
Consider enabling auto-renewal to prevent accidental expiration.
Got: Expires Jul 2, 2026
Info::
Registrar: Cloudflare, Inc
Info::
Registrar lock is enabled
Domain cannot be transferred without explicit unlock from the registrar. This protects against unauthorized transfers.
Domain expiry

19 days

July 2, 2026

SSL certificate

68 days

Issued by Google Trust Services

Domain age

10 years, 11 months

Registered July 2, 2015

DNSSEC

Status unknown

Protects against DNS spoofing

Hosting

Unknown

2a06:98c1:3101::6812:284b

Registrar

Cloudflare, Inc

Locked 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
Registrar Cloudflare, Inc
Created July 2, 2015 (10 years, 11 months ago)
Expires July 2, 2026 (2 months)
Last Updated July 14, 2025
Name Servers langston.ns.cloudflare.com, adelaide.ns.cloudflare.com
Registrant Consensys Software Inc
Hosting
IP Address 2a06:98c1:3101::6812:284b
Data source: whois (1.0s)

Consider enabling auto-renewal to prevent accidental expiration.

Why this matters

Domain expiry approaching — renew immediately and ensure auto-renew + alerting are configured.

Source: ICANN renewal policy

Domain cannot be transferred without explicit unlock from the registrar. This protects against unauthorized transfers.

Why this matters

Registrar lock (clientTransferProhibited et al.) prevents unauthorized domain transfers — strongest defense against domain hijacking.

Source: ICANN / domain-security best practice

A+
HTTP Probe Timing
Total 339 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
40 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
17 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
22 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
283 ms
Total Time Total request time from DNS lookup through full response.
340 ms

Connection waterfall

DNS Lookup 40 ms TCP Connect 17 ms TLS Handshake 22 ms Server Processing 203 ms Content Transfer 57 ms
A
CDN & Delivery
Cloudflare (DYNAMIC)
PASS
Cloudflare (DYNAMIC)
Info::
Site is served via Cloudflare CDN (edge: CDG)
Got: cf-ray: 9f08200dbeea986b-CDG
Info::
CDN cache status: DYNAMIC
CDN Detected: Cloudflare
Provider Cloudflare Cache Status DYNAMIC Evidence cf-ray: 9f08200dbeea986b-CDG
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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