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https://zed.dev

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
78 days until leaf cert expires — 4 issues to address
REVIEW

Certificate validity

78
days left
0d 30d 60d 90d+

Recommended actions

  • Add includeSubDomains to the HSTS directive
  • Add the preload directive and submit to hstspreload.org once max-age + includeSubDomains are in place
  • 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, 32 ms lookup
PASS
2 A records, 32 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 104.18.6.151, 104.18.7.151
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2606:4700::6812:797, 2606:4700::6812:697
Info::
2 nameserver(s) configured
Got: beau.ns.cloudflare.com, vera.ns.cloudflare.com
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
Info::
DNS resolution time: 32 ms
Got: 32 ms
A104.18.6.151, 104.18.7.151
AAAA2606:4700::6812:797, 2606:4700::6812:697
CNAME—
NSbeau.ns.cloudflare.com, vera.ns.cloudflare.com
MX
1 aspmx.l.google.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com
10 alt3.aspmx.l.google.com
10 alt4.aspmx.l.google.com
TXT
google-site-verification=KOoG0CA7r36CwRBMZOuocP6v4wCz9UqD4jSc9Q3_rck
MS=ms87168958
SPF v=spf1 include:_spf.mlsend.com include:_spf.google.com ~all
1password-site-verification=VZM5AVNJYRFRTI34OOTWHDBK24
CAALookup not available with standard resolver
Resolved in 32 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://zed.dev

https://zed.dev

155 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://zed.dev200155 msHTTP/1.1cloudflare
A+
IPv6 Readiness
IPv6 reachable (17 ms)
PASS
IPv6 reachable (17 ms)
Info::
IPv6 is configured and reachable at 2606:4700::6812:797, 2606:4700::6812:697
Got: 17 ms connect
IPv6 Ready
AAAA Records 2606:4700::6812:797, 2606:4700::6812:697 Connection Reachable (17 ms)
A+
Crawlability
robots.txt present, sitemap with 1335 URLs
PASS
robots.txt present, sitemap with 1335 URLs
Info::
robots.txt is present
Got: 194 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 1335 entries
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 194 B Sitemaps referenced 1 User-agents * Blocking No — crawling allowed
User-agent: *
Disallow: /sign_in
Disallow: /cla
Disallow: /eula
Disallow: /terms-of-service
Disallow: /third-party-terms
Disallow: /subprocessors

Allow: /

Sitemap: https://zed.dev/sitemap.xml
sitemap.xml 200 OK
Type URL Set URLs 1335 entries Valid XML Yes
Sample URLs:
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)
Warning::
HTTP→HTTPS redirect uses 302 instead of 301
Got: 302 temporary redirect Expected: 301 permanent redirect

www / non-www

301https://www.zed.dev/
200https://zed.dev/

Preferred variant: non-www

HTTP → HTTPS

308http://zed.dev/ → https://zed.dev/

Use 301 (permanent) instead of 302 (temporary)

A+
Domain Intelligence
zed.dev — via Squarespace Domains II LLC., 5 years, 8 months old
PASS
zed.dev — via Squarespace Domains II LLC., 5 years, 8 months old
Info::
Domain registered until Sep 3, 2026 (4 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: Squarespace Domains II LLC.
Domain expiry

53 days

September 3, 2026

SSL certificate

78 days

Issued by Google Trust Services

Domain age

5 years, 8 months

Registered September 3, 2020

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Unknown

2606:4700::6812:697

Registrar

Squarespace Domains II LLC.

Lock status unknown 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
Registrar Squarespace Domains II LLC.
Created September 3, 2020 (5 years, 8 months ago)
Expires September 3, 2026 (4 months)
Last Updated October 10, 2025
Name Servers beau.ns.cloudflare.com, vera.ns.cloudflare.com
DNSSEC Not enabled
Hosting
IP Address 2606:4700::6812:697
Data source: rdap (0.3s)

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

A
HTTP Probe Timing
Total 523 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
31 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.
491 ms
Total Time Total request time from DNS lookup through full response.
524 ms

Connection waterfall

DNS Lookup 31 ms TCP Connect 17 ms TLS Handshake 22 ms Server Processing 422 ms Content Transfer 33 ms
A
CDN & Delivery
Cloudflare (DYNAMIC)
PASS
Cloudflare (DYNAMIC)
Info::
Site is served via Cloudflare CDN (edge: CDG)
Got: cf-ray: 9e8bd290bb60b444-CDG
Info::
CDN cache status: DYNAMIC
CDN Detected: Cloudflare
Provider Cloudflare Cache Status DYNAMIC Evidence cf-ray: 9e8bd290bb60b444-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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