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https://notes.io

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
100
GRADE
A+
FIX
0
REVIEW
1
PASS
8
INFO
0
Probed from Amsterdam, Netherlands
200 OK
Checks
9
8 PASS 1 REVIEW
B
TLS Certificate Expiry & Recommendations
89 days until leaf cert expires — 4 issues to address
REVIEW

Certificate validity

89
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, 10 ms lookup
PASS
2 A records, 10 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 188.114.97.0, 188.114.96.0
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2a06:98c1:3120::, 2a06:98c1:3121::
Info::
2 nameserver(s) configured
Got: bill.ns.cloudflare.com, irena.ns.cloudflare.com
Info::
7 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: 10 ms
Got: 10 ms
A188.114.97.0, 188.114.96.0
AAAA2a06:98c1:3120::, 2a06:98c1:3121::
CNAME—
NSbill.ns.cloudflare.com, irena.ns.cloudflare.com
MX
10 aspmx.l.google.com
20 alt2.aspmx.l.google.com
20 alt1.aspmx.l.google.com
30 aspmx4.googlemail.com
30 aspmx3.googlemail.com
30 aspmx5.googlemail.com
30 aspmx2.googlemail.com
TXT
ezoic-domain-verification=KEtYHeuYoPI3XR0WW0UxeLxqljbP9F
google-site-verification=DKc3dEzX_PMdx649Pm4EMBwXFtAwZtKCHDZqvxXg-ck
SPF v=spf1 include:_spf.google.com ~all
CAALookup not available with standard resolver
Resolved in 10 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://notes.io

https://notes.io

232 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://notes.io200232 msHTTP/1.1cloudflare
A+
IPv6 Readiness
IPv6 reachable (1 ms)
PASS
IPv6 reachable (1 ms)
Info::
IPv6 is configured and reachable at 2a06:98c1:3120::, 2a06:98c1:3121::
Got: 1 ms connect
IPv6 Ready
AAAA Records 2a06:98c1:3120::, 2a06:98c1:3121:: Connection Reachable (1 ms)
A+
Crawlability
robots.txt present, sitemap with 200 URLs
PASS
robots.txt present, sitemap with 200 URLs
Info::
robots.txt is present
Got: 87 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 200 entries
Info::
Sitemap index with 200 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 87 B Sitemaps referenced 1 User-agents * Blocking No — crawling allowed
User-agent: *
Allow: /

# Sitemap location
Sitemap: https://notes.io/sitemap_index.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 200 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.notes.io/
200https://notes.io/

Preferred variant: non-www

HTTP → HTTPS

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

Consistent

A+
Domain Intelligence
notes.io — via Key-Systems GmbH, 15 years, 11 months old
PASS
notes.io — via Key-Systems GmbH, 15 years, 11 months old
Info::
Domain registered until Aug 13, 2026 (3 months remaining)
Info::
Registrar: Key-Systems GmbH
Info::
Registrar lock is enabled
Domain cannot be transferred without explicit unlock from the registrar. This protects against unauthorized transfers.
Domain expiry

32 days

August 13, 2026

SSL certificate

89 days

Issued by Google Trust Services

Domain age

15 years, 11 months

Registered August 13, 2010

DNSSEC

Status unknown

Protects against DNS spoofing

Hosting

Unknown

2a06:98c1:3120::

Registrar

Key-Systems GmbH

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 Key-Systems GmbH
Created August 13, 2010 (15 years, 11 months ago)
Expires August 13, 2026 (3 months)
Last Updated November 27, 2025
Name Servers bill.ns.cloudflare.com, irena.ns.cloudflare.com
Registrant METROMEDYA Digital Ad Agency
Hosting
IP Address 2a06:98c1:3120::
Data source: whois (0.7s)

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

Connection waterfall

DNS Lookup 6 ms TCP Connect 1 ms TLS Handshake 9 ms Server Processing 88 ms Content Transfer 0 ms
A
CDN & Delivery
Cloudflare (DYNAMIC)
PASS
Cloudflare (DYNAMIC)
Info::
Site is served via Cloudflare CDN (edge: AMS)
Got: cf-ray: 9f0885fc7f9c6562-AMS
Info::
CDN cache status: DYNAMIC
CDN Detected: Cloudflare
Provider Cloudflare Cache Status DYNAMIC Evidence cf-ray: 9f0885fc7f9c6562-AMS
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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