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https://ztorbynauczycielki.pl

Infrastructure

· 17 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
81
GRADE
B
FIX
2
REVIEW
8
PASS
7
INFO
0
Probed from Madrid, Spain
200 OK
Checks
17
7 PASS 8 REVIEW 2 FIX
D
URL Variants
Action
www/non-www, trailing slash, HTTP→HTTPS
FIX
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
Critical::
HTTP version does not redirect to HTTPS
Got: HTTP 200 Expected: 301 redirect to HTTPS

www / non-www

200https://www.ztorbynauczycielki.pl/
200https://ztorbynauczycielki.pl/

Inconsistent — duplicate content risk

HTTP → HTTPS

200http://ztorbynauczycielki.pl/

HTTP version does not redirect to HTTPS

D
CDN & Delivery
Action
No CDN (document or assets)
FIX
No CDN (document or assets)
Warning::
No CDN (document or assets)
Neither the HTML document nor the page's subresources are served through an edge network. A CDN can significantly improve load times for users around the world by caching content at edge nodes closer to them.
No CDN (document or assets)

Consider using a CDN to improve global delivery speed and reduce origin load.

B
DNSSEC
Unsigned (DNSSEC not deployed)
REVIEW
Unsigned (DNSSEC not deployed)
Info::
DNSSEC is not deployed
The zone is not DNSSEC-signed. Users on validating resolvers (Cloudflare 1.1.1.1, Quad9 9.9.9.9, growing default in mobile resolvers) get no protection against DNS spoofing for this domain. Most registrars now offer DNSSEC at a single click; consider enabling it for sites where authenticity matters (banking, healthcare, government).
B
CAA Records
No CAA records (any CA may issue certificates)
REVIEW
No CAA records (any CA may issue certificates)
Info::
No CAA records published
Without CAA records, any publicly-trusted CA can issue certificates for this domain. Adding a CAA record (`yourdomain. IN CAA 0 issue "letsencrypt.org"`) restricts issuance to CAs you authorize. Required by CAB Forum baseline since 2017; the default of 'any CA' is widely supported but is the broader attack surface for issuance fraud.
B
Reverse DNS
0/1 IPs match cert SAN
REVIEW
0/1 IPs match cert SAN
Info::
PTR for 83.168.99.101 does not match any cert SAN: v102.vh.net.pl
Common when behind a CDN or shared hosting (PTR points at the provider's hostname). Mismatch can also affect mail deliverability if this IP sends email -- many MTAs reject mail when forward+reverse DNS disagree.
C
IPv6 Readiness
Action
No IPv6 support
REVIEW
No IPv6 support
Info::
No IPv6 (AAAA) records found
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No IPv6 Support
About 40% of internet users have IPv6. Consider adding AAAA records.

IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.

Why this matters

No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.

Source: Google IPv6 stats

B
Domain Intelligence
ztorbynauczycielki.pl — via Prociv Sp. z o.o., 9 years, 1 months old, hosted on NODEA-AS - NODEA SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA, PL
REVIEW
ztorbynauczycielki.pl — via Prociv Sp. z o.o., 9 years, 1 months old, hosted on NODEA-AS - NODEA SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA, PL
Critical::
Domain expires in 13 days
This domain expires on November 7, 2026. Domains that expire accidentally cause complete website downtime. Enable auto-renewal or renew manually now.
Got: Expires Nov 7, 2026
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: Prociv Sp. z o.o.
Info::
Hosting: NODEA-AS - NODEA SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA, PL
Got: AS214349
Domain expiry

12 days

November 7, 2026

SSL certificate

43 days

Issued by Let's Encrypt

Domain age

9 years, 1 months

Registered November 7, 2017

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

NODEA-AS - NODEA SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA, PL

ASN AS214349

83.168.99.101

Registrar

Prociv Sp. z o.o.

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 Prociv Sp. z o.o.
Created November 7, 2017 (9 years, 1 months ago)
Expires November 7, 2026 (13 days)
Last Updated November 6, 2025
Name Servers ns2.vh.pl, ns1.vh.pl
DNSSEC Not enabled
Hosting
IP Address 83.168.99.101
ASN AS214349 (NODEA-AS - NODEA SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA, PL)
Provider NODEA-AS - NODEA SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA, PL
Data source: rdap (0.5s)

This domain expires on November 7, 2026. Domains that expire accidentally cause complete website downtime. Enable auto-renewal or renew manually now.

Why this matters

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

Source: ICANN renewal policy

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

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

Certificate validity

43
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
B
CDN Cache Observability
No CDN cache-status headers in the response
REVIEW
No CDN cache-status headers in the response
Info::
No CDN cache-status headers in the response
Without an X-Cache / CF-Cache-Status / X-Vercel-Cache / Age header, you can't tell from outside whether a request hit the cache or went to origin. Operationally important: enables debugging stale-content reports and verifying cache rules. Most managed CDN platforms emit at least one of these by default; absence often means the platform's diagnostic headers are stripped at an upstream proxy.
B
Operational Status Page
No status page link detected
REVIEW
No status page link detected
Info::
No operational status page link detected
Status pages communicate planned maintenance and incidents to users -- a hallmark of operationally-mature services. Most SaaS teams publish one via Atlassian Statuspage, Instatus, BetterUptime, or a self-hosted Cachet. Smaller sites legitimately don't need one; flagged as Info, not a failure.
A+
DNS Records
1 A records, 83 ms lookup
PASS
1 A records, 83 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 83.168.99.101
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
No IPv6 (AAAA) records
Info::
2 nameserver(s) configured
Got: ns1.vh.pl, ns2.vh.pl
Info::
1 mail exchanger(s) configured
Info::
SPF record present in TXT
Info::
DNS resolution time: 83 ms
Got: 83 ms
A83.168.99.101
AAAA—
CNAME—
NSns1.vh.pl, ns2.vh.pl
MX
0 mail.ztorbynauczycielki.pl
TXT
SPF v=spf1 ip4:83.168.99.101 ip4:83.168.99.107 include:spf.vh.net.pl -all
CAALookup not available with standard resolver
Resolved in 83 ms

Multiple A records provide failover if one server goes down.

Why this matters

Single A record means a single point of failure — if that IP goes down, your site is unreachable until DNS TTL expires.

Learn more ▾

Add multiple A records for round-robin failover, or use a managed DNS provider with health-checked failover (Route 53, Cloudflare, NS1). Short TTL (60-300s) lets clients recover faster on outages.

Source: SRE practice / DNS architecture

A+
Subdomain Takeover
No subdomain takeover risk detected
PASS
No subdomain takeover risk detected
Info::
No CNAME record present
A
Multi-Resolver DNS Speed
Mean 79ms across 3 resolvers (spread 34ms)
PASS
Mean 79ms across 3 resolvers (spread 34ms)
Info::
Google: 61ms
Got: 61ms via 8.8.8.8:53
Info::
Cloudflare: 81ms
Got: 81ms via 1.1.1.1:53
Info::
Quad9: 95ms
Got: 95ms via 9.9.9.9:53
A+
Redirect Chain
No redirects — direct access
PASS
No redirects — direct access
Info::
No redirects — direct access
Got: https://ztorbynauczycielki.pl

https://ztorbynauczycielki.pl

159 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://ztorbynauczycielki.pl200159 msHTTP/1.1
A+
Crawlability
robots.txt present, sitemap with 8 URLs
PASS
robots.txt present, sitemap with 8 URLs
Info::
robots.txt is present
Got: 448 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 8 entries
Info::
Sitemap index with 8 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 448 B Sitemaps referenced 1 User-agents * Blocking No — crawling allowed
User-agent: *
Disallow: /wp-content/uploads/wc-logs/
Disallow: /wp-content/uploads/woocommerce_transient_files/
Disallow: /wp-content/uploads/woocommerce_uploads/
Disallow: /*?add-to-cart=
Disallow: /*?*add-to-cart=
Disallow: /wp-admin/
Allow: /wp-admin/admin-ajax.php

# START YOAST BLOCK
# ---------------------------
User-agent: *
Disallow:

Sitemap: http://ztorbynauczycielki.pl/sitemap_index.xml
# ---------------------------
# END YOAST BLOCK
sitemap.xml 200 OK
Type Sitemap Index URLs 8 entries Valid XML Yes
Child Sitemaps:
A+
HTTP Probe Timing
Total 376 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
93 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
52 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
55 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
325 ms
Total Time Total request time from DNS lookup through full response.
377 ms

Connection waterfall

DNS Lookup 93 ms TCP Connect 52 ms TLS Handshake 55 ms Server Processing 124 ms Content Transfer 52 ms
A+
Health Check Endpoint
Health endpoint at https://ztorbynauczycielki.pl/health (HTTP 200)
PASS
Health endpoint at https://ztorbynauczycielki.pl/health (HTTP 200)
Info::
Public health endpoint at https://ztorbynauczycielki.pl/health
Got: https://ztorbynauczycielki.pl/health
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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