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Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
90
GRADE
A
FIX
0
REVIEW
2
PASS
7
INFO
0
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
7 PASS 2 REVIEW
C
URL Variants
Action
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
Warning::
HTTP→HTTPS redirect uses 302 instead of 301
Got: 302 temporary redirect Expected: 301 permanent redirect

www / non-www

200https://www.vivaldi.com/
200https://vivaldi.com/

Inconsistent — duplicate content risk

HTTP → HTTPS

302http://www.vivaldi.com/ → https://www.vivaldi.com/

Use 301 (permanent) instead of 302 (temporary)

B
TLS Certificate Expiry & Recommendations
50 days until leaf cert expires — 2 issues to address
REVIEW

Certificate validity

50
days left
0d 30d 60d 90d+

Recommended actions

  • Enable HSTS: Strict-Transport-Security: max-age=31536000; includeSubDomains
  • Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A
DNS Records
2 A records, 50 ms lookup
PASS
2 A records, 50 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 104.20.29.157, 172.66.165.60
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2606:4700:10::ac42:a53c, 2606:4700:10::6814:1d9d
Info::
No NS records found
Info::
No MX records — email not configured via DNS
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: 50 ms
Got: 50 ms
A104.20.29.157, 172.66.165.60
AAAA2606:4700:10::ac42:a53c, 2606:4700:10::6814:1d9d
CNAME—
NS—
MX—
TXT—
CAALookup not available with standard resolver
Resolved in 50 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
1 redirect(s), 806 ms total
PASS
1 redirect(s), 806 ms total
Info::
Single redirect
Got: https://www.vivaldi.com → https://vivaldi.com/ (301)
Info::
WWW normalization redirect
Info::
Redirect overhead: 806 ms total
Got: 806 ms

https://www.vivaldi.com

197 ms · HTTP/1.1

301

https://vivaldi.com/

608 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://www.vivaldi.com301197 msHTTP/1.1cloudflare
2https://vivaldi.com/200608 msHTTP/1.1cloudflare

See the visual redirect chain in the HTTP Probe tab →

A+
IPv6 Readiness
IPv6 reachable (17 ms)
PASS
IPv6 reachable (17 ms)
Info::
IPv6 is configured and reachable at 2606:4700:10::ac42:a53c, 2606:4700:10::6814:1d9d
Got: 17 ms connect
IPv6 Ready
AAAA Records 2606:4700:10::ac42:a53c, 2606:4700:10::6814:1d9d Connection Reachable (17 ms)
A+
Crawlability
robots.txt present, sitemap with 2882 URLs
PASS
robots.txt present, sitemap with 2882 URLs
Info::
robots.txt is present
Got: 195 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 2882 entries
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 195 B Sitemaps referenced 1 User-agents *, Yandex Blocking No — crawling allowed
User-agent: *
Disallow: /source/vivaldi-source*
Disallow: /wp-admin/
Disallow: /bk/
Sitemap: https://vivaldi.com/sitemap.xml

User-agent: Yandex
Disallow: /wp-admin/
Disallow: /bk/
Disallow: /*?
sitemap.xml 200 OK
Type URL Set URLs 2882 entries Valid XML Yes
Sample URLs:
A+
Domain Intelligence
vivaldi.com — via GoDaddy.com, LLC, 22 years, 9 months old
PASS
vivaldi.com — via GoDaddy.com, LLC, 22 years, 9 months old
Info::
Domain registered until Oct 15, 2026 (6 months remaining)
Info::
DNSSEC is enabled
Info::
Registrar: GoDaddy.com, LLC
Domain expiry

95 days

October 15, 2026

SSL certificate

50 days

Issued by Google Trust Services

Domain age

22 years, 9 months

Registered October 15, 2003

DNSSEC

Enabled

Protects against DNS spoofing

Hosting

Unknown

2606:4700:10::ac42:a53c

Registrar

GoDaddy.com, LLC

Lock status unknown 2 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Registrar GoDaddy.com, LLC
Created October 15, 2003 (22 years, 9 months ago)
Expires October 15, 2026 (6 months)
Last Updated October 16, 2023
Name Servers carl.ns.cloudflare.com, sue.ns.cloudflare.com
DNSSEC Enabled
Hosting
IP Address 2606:4700:10::ac42:a53c
Data source: rdap (0.1s)
A+
HTTP Probe Timing
Total 242 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
46 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.
243 ms
Total Time Total request time from DNS lookup through full response.
243 ms

Connection waterfall

DNS Lookup 46 ms TCP Connect 17 ms TLS Handshake 22 ms Server Processing 158 ms Content Transfer 0 ms
A
CDN & Delivery
Cloudflare (DYNAMIC)
PASS
Cloudflare (DYNAMIC)
Info::
Site is served via Cloudflare CDN (edge: CDG)
Got: cf-ray: 9eb2cdeddfc87e80-CDG
Info::
CDN cache status: DYNAMIC
CDN Detected: Cloudflare
Provider Cloudflare Cache Status DYNAMIC Evidence cf-ray: 9eb2cdeddfc87e80-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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