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https://colorlib.com

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 Singapore, Singapore
200 OK
Checks
9
8 PASS 1 REVIEW
B
TLS Certificate Expiry & Recommendations
86 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

86
days left
0d 30d 60d 90d+

Recommended actions

  • Extend HSTS max-age to at least 31536000 (1 year) to meet the preload list criteria
  • Add includeSubDomains to the HSTS directive
  • Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A+
DNS Records
3 A records, 8 ms lookup
PASS
3 A records, 8 ms lookup
Info::
Resolves to 3 IPv4 address(es)
Got: 104.26.10.149, 104.26.11.149, 172.67.70.13
Info::
Has 3 IPv6 (AAAA) record(s)
Got: 2606:4700:20::681a:a95, 2606:4700:20::681a:b95, 2606:4700:20::ac43:460d
Info::
2 nameserver(s) configured
Got: kip.ns.cloudflare.com, gina.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: 8 ms
Got: 8 ms
A104.26.10.149, 104.26.11.149, 172.67.70.13
AAAA2606:4700:20::681a:a95, 2606:4700:20::681a:b95, 2606:4700:20::ac43:460d
CNAME—
NSkip.ns.cloudflare.com, gina.ns.cloudflare.com
MX
1 aspmx.l.google.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com
10 alt4.aspmx.l.google.com
10 alt3.aspmx.l.google.com
TXT
ca3-d13c9193dc76426cb4fb694b6893e623
google-site-verification=8sHhuSEKf_fsUs0aonrAI1r_I9ucGiPtQdndr48v3AM
SPF v=spf1 include:_spf.google.com include:sendgrid.net include:amazonses.com ~all
CAALookup not available with standard resolver
Resolved in 8 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://colorlib.com

https://colorlib.com

40 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://colorlib.com20040 msHTTP/1.1cloudflare
A+
IPv6 Readiness
IPv6 reachable (1 ms)
PASS
IPv6 reachable (1 ms)
Info::
IPv6 is configured and reachable at 2606:4700:20::681a:a95, 2606:4700:20::681a:b95, 2606:4700:20::ac43:460d
Got: 1 ms connect
IPv6 Ready
AAAA Records 2606:4700:20::681a:a95, 2606:4700:20::681a:b95, 2606:4700:20::ac43:460d Connection Reachable (1 ms)
A+
Crawlability
robots.txt present, sitemap with 2 URLs
PASS
robots.txt present, sitemap with 2 URLs
Info::
robots.txt is present
Got: 394 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 2 entries
Info::
Sitemap index with 2 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 394 B Sitemaps referenced 2 User-agents * Blocking No — crawling allowed
User-agent: *

# feed urls
Disallow: */feed/

# login urls
Disallow: /wp-admin/
Disallow: /wp/wp-admin/
Disallow: /wp-login.php
Disallow: /wp/wp-login.php

#block access to internal search result pages
Disallow: */wp/?s=*
Disallow: */wp/search/*
Disallow: /*?s=
Disallow: */search/*

# Sitemaps
Sitemap: https://colorlib.com/sitemap_index.xml
Sitemap: https://colorlib.com/wp/sitemap_index.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 2 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.colorlib.com/
200https://colorlib.com/

Preferred variant: non-www

HTTP → HTTPS

301http://colorlib.com/ → https://colorlib.com/

Consistent

A+
Domain Intelligence
colorlib.com — via Cloudflare, Inc., 12 years, 9 months old
PASS
colorlib.com — via Cloudflare, Inc., 12 years, 9 months old
Info::
Domain registered until Sep 19, 2026 (5 months remaining)
Info::
DNSSEC is enabled
Info::
Registrar: Cloudflare, Inc.
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

66 days

September 19, 2026

SSL certificate

86 days

Issued by Google Trust Services

Domain age

12 years, 9 months

Registered September 19, 2013

DNSSEC

Enabled

Protects against DNS spoofing

Hosting

Unknown

2606:4700:20::ac43:460d

Registrar

Cloudflare, Inc.

Unlocked 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 registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar Cloudflare, Inc.
Created September 19, 2013 (12 years, 9 months ago)
Expires September 19, 2026 (5 months)
Last Updated August 20, 2025
Name Servers gina.ns.cloudflare.com, kip.ns.cloudflare.com
DNSSEC Enabled
Hosting
IP Address 2606:4700:20::ac43:460d
Data source: rdap (0.6s)

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 33 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
5 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.
7 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
31 ms
Total Time Total request time from DNS lookup through full response.
33 ms

Connection waterfall

DNS Lookup 5 ms TCP Connect 1 ms TLS Handshake 7 ms Server Processing 18 ms Content Transfer 2 ms
A+
CDN & Delivery
Cloudflare (HIT)
PASS
Cloudflare (HIT)
Info::
Site is served via Cloudflare CDN (edge: SIN)
Got: cf-ray: 9efee9c8191d0c16-SIN
Info::
CDN cache status: HIT
CDN Detected: Cloudflare
Provider Cloudflare Cache Status HIT Evidence cf-ray: 9efee9c8191d0c16-SIN
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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