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Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
96
GRADE
A
FIX
0
REVIEW
2
PASS
7
INFO
0
Probed from Madrid, Spain
200 OK
Checks
9
7 PASS 2 REVIEW
B
Crawlability
robots.txt present, no sitemap
REVIEW
robots.txt present, no sitemap
Info::
robots.txt is present
Got: 66 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 66 B Sitemaps referenced 0 User-agents * Blocking No — crawling allowed
# no point in indexing these
User-agent: *
Disallow: /dev/log.cgi

sitemap.xml No sitemap found

No sitemap found

Adding a sitemap helps search engines discover your pages.

B
TLS Certificate Expiry & Recommendations
74 days until leaf cert expires — 4 issues to address
REVIEW

Certificate validity

74
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
4 A records, 49 ms lookup
PASS
4 A records, 49 ms lookup
Info::
Resolves to 4 IPv4 address(es)
Got: 151.101.129.91, 151.101.193.91, 151.101.65.91, 151.101.1.91
Info::
Has 8 IPv6 (AAAA) record(s)
Got: 2a04:4e42:600::347, 2a04:4e42:800::347, 2a04:4e42:200::347, 2a04:4e42:a00::347, 2a04:4e42:e00::347, 2a04:4e42:400::347, 2a04:4e42:c00::347, 2a04:4e42::347
Info::
5 nameserver(s) configured
Got: ns1.haxx.se, ns.amplitut.de, nx3.named.se, nx1.named.se, nx2.named.se
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: 49 ms
Got: 49 ms
A151.101.129.91, 151.101.193.91, 151.101.65.91, 151.101.1.91
AAAA2a04:4e42:600::347, 2a04:4e42:800::347, 2a04:4e42:200::347, 2a04:4e42:a00::347, 2a04:4e42:e00::347, 2a04:4e42:400::347, 2a04:4e42:c00::347, 2a04:4e42::347
CNAME
NSns1.haxx.se, ns.amplitut.de, nx3.named.se, nx1.named.se, nx2.named.se
MX
10 mail.haxx.se
TXT
fastly-domain-delegation-lk4328dd00dsaa-305976-20201102
SPF v=spf1 -all
CAALookup not available with standard resolver
Resolved in 49 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://curl.se

https://curl.se

5 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://curl.se2005 msHTTP/1.1nginx/1.27.5
A+
IPv6 Readiness
IPv6 reachable (0 ms)
PASS
IPv6 reachable (0 ms)
Info::
IPv6 is configured and reachable at 2a04:4e42:600::347, 2a04:4e42:800::347, 2a04:4e42:200::347, 2a04:4e42:a00::347, 2a04:4e42:e00::347, 2a04:4e42:400::347, 2a04:4e42:c00::347, 2a04:4e42::347
Got: 0 ms connect
IPv6 Ready
AAAA Records 2a04:4e42:600::347, 2a04:4e42:800::347, 2a04:4e42:200::347, 2a04:4e42:a00::347, 2a04:4e42:e00::347, 2a04:4e42:400::347, 2a04:4e42:c00::347, 2a04:4e42::347 Connection Reachable (0 ms)
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.curl.se/
200https://curl.se/

Preferred variant: non-www

HTTP → HTTPS

301http://curl.se/ https://curl.se/

Consistent

A+
Domain Intelligence
curl.se — via Oderland, 5 years, 7 months old
PASS
curl.se — via Oderland, 5 years, 7 months old
Info::
Domain registered until Oct 19, 2026 (6 months remaining)
Info::
Registrar: Oderland
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.
Domain expiry

96 days

October 19, 2026

SSL certificate

74 days

Issued by Let's Encrypt

Domain age

5 years, 7 months

Registered October 19, 2020

DNSSEC

Status unknown

Protects against DNS spoofing

Hosting

Unknown

2a04:4e42:a00::347

Registrar

Oderland

Unlocked 5 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar Oderland
Created October 19, 2020 (5 years, 7 months ago)
Expires October 19, 2026 (6 months)
Last Updated August 18, 2021
Name Servers ns.amplitut.de, ns1.haxx.se, nx3.named.se, nx2.named.se, nx1.named.se
Registrant (not shown)
Hosting
IP Address 2a04:4e42:a00::347
Data source: whois (0.7s)

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

Connection waterfall

DNS Lookup 17 ms TCP Connect 0 ms TLS Handshake 2 ms Server Processing 42 ms Content Transfer 0 ms
A+
CDN & Delivery
Fastly (HIT, MISS)
PASS
Fastly (HIT, MISS)
Info::
Site is served via Fastly CDN
Got: x-served-by: cache-bma-essb1270054-BMA, cache-toj-leto2350045-TOJ
Info::
CDN cache status: HIT, MISS
CDN Detected: Fastly
Provider Fastly Cache Status HIT, MISS Evidence x-served-by: cache-bma-essb1270054-BMA, cache-toj-leto2350045-TOJ
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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