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Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
83
GRADE
B
FIX
1
REVIEW
4
PASS
4
INFO
0
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
4 PASS 4 REVIEW 1 FIX
D
CDN & Delivery
Action
No CDN detected
FIX
No CDN detected
Warning::
No CDN detected
A CDN can significantly improve load times for users around the world by caching content at edge nodes closer to them.
No CDN detected

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

B
Redirect Chain
1 redirect(s), 1032 ms total
REVIEW
1 redirect(s), 1032 ms total
Info::
Single redirect
Got: https://cgtn.com → https://www.cgtn.com/ (301)
Info::
WWW normalization redirect
Warning::
Redirect overhead: 1032 ms total
Got: 1032 ms

https://cgtn.com

621 ms · HTTP/1.1

301

https://www.cgtn.com/

411 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://cgtn.com301621 msHTTP/1.1nginx
2https://www.cgtn.com/200411 msHTTP/1.1nginx

See the visual redirect chain in the HTTP Probe tab →

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
URL Variants
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
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

200https://www.cgtn.com/
200https://cgtn.com/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://cgtn.com/ → https://www.cgtn.com/

Consistent

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

Certificate validity

327
days left
0d 30d 60d 90d+

Recommended actions

  • Prefer TLS 1.3 — TLS 1.2 is acceptable but TLS 1.3 removes RSA key exchange and improves latency
  • 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
1 A records, 39 ms lookup
PASS
1 A records, 39 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 54.222.252.100
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: vip4.alidns.com, vip3.alidns.com
Info::
2 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: 39 ms
Got: 39 ms
A54.222.252.100
AAAA—
CNAME—
NSvip4.alidns.com, vip3.alidns.com
MX
5 mxbiz1.qq.com
10 mxbiz2.qq.com
TXT
google-site-verification=8_2s7giZaljxjje-fy81jQtX5TkeeNZEK9ATXBeqkws
google-site-verification=HUlkztM3XGE3puOS_QrSpiVSoj55wHzx1sM9g7NZgGE
google-site-verification=LxJpUGQ7bSi81FU62zXs0t1riN2PO4QEAVmf8vJdM58
google-site-verification=3txFgH3QvlG8pGag-J19b1Z8L9RJJtMWGLgXgEfYt3Y
MS=ms74189957
SPF v=spf1 include:spf.mail.qq.com include:amazonses.com -all
brevo-code:44536cffe115b825d5debbe9f6874704
CAALookup not available with standard resolver
Resolved in 39 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

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+
Crawlability
robots.txt present, sitemap with 26 URLs
PASS
robots.txt present, sitemap with 26 URLs
Info::
robots.txt is present
Got: 1328 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 26 entries
Info::
Sitemap index with 26 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 1328 B Sitemaps referenced 22 User-agents * Blocking No — crawling allowed
User-agent: *
Disallow: /*.do*
Disallow: /*contents.0.shareBody.shareUrl*
Disallow: /*account.user.cgtn.com*


# Sitemap
Sitemap: https://www.cgtn.com/sitemap.xml
Sitemap: https://www.cgtn.com/sitemap_latestnews.xml
Sitemap: https://www.cgtn.com/sitemap_news.xml
Sitemap: https://www.cgtn.com/sitemap_figures.xml
Sitemap: https://www.cgtn.com/sitemap_sections.xml
Sitemap: https://www.cgtn.com/sitemap_specials.xml
Sitemap: https://www.cgtn.com/sitemap_archived_2024.xml
Sitemap: https://www.cgtn.com/sitemap_archived_2024_2.xml
Sitemap: https://www.cgtn.com/sitemap_archived_2024_3.xml
Sitemap: https://www.cgtn.com/sitemap_archived_2023.xml
Sitemap: https://www.cgtn.com/sitemap_archived_2023_2.xml
Sitemap: https://www.cgtn.com/sitemap_archived_2022.xml
Sitemap: https://www.cgtn.com/sitemap_archived_2022_2.xml
Sitemap: https://www.cgtn.com/sitemap_archived_2021.xml
Sitemap: https://www.cgtn.com/sitemap_archived_2021_2.xml
Sitemap: https://www.cgtn.com/sitemap_archived_2020.xml
Sitemap: https://www.cgtn.com/sitemap_archived_2020_2.xml
Sitemap: https://www.cgtn.com/sitemap_archived_2019.xml
Sitemap: https://www.cgtn.com/sitemap_archived_2019_2.xml
Sitemap: https://www.cgtn.com/sitemap_archived_2018.xml
Sitemap: https://www.cgtn.com/sitemap_archived_2018_2.xml
Sitemap: https://www.cgtn.com/sitemap_archived_2017.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 26 entries Valid XML Yes
Child Sitemaps:
A+
Domain Intelligence
cgtn.com — via Alibaba Cloud Computing (Beijing) Co., Ltd., 23 years, 9 months old, hosted on BJ-GUANGHUAN-AP Beijing Guanghuan Xinwang Digital, CN
PASS
cgtn.com — via Alibaba Cloud Computing (Beijing) Co., Ltd., 23 years, 9 months old, hosted on BJ-GUANGHUAN-AP Beijing Guanghuan Xinwang Digital, CN
Info::
Domain registered until Nov 15, 2026 (6 months remaining)
Info::
DNSSEC is enabled
Info::
Registrar: Alibaba Cloud Computing (Beijing) Co., Ltd.
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.
Info::
Hosting: BJ-GUANGHUAN-AP Beijing Guanghuan Xinwang Digital, CN
Got: AS55960
Domain expiry

152 days

November 15, 2026

SSL certificate

327 days

Issued by DigiCert, Inc.

Domain age

23 years, 9 months

Registered November 15, 2002

DNSSEC

Enabled

Protects against DNS spoofing

Hosting

BJ-GUANGHUAN-AP Beijing Guanghuan Xinwang Digital, CN

ASN AS55960

54.222.252.100

Registrar

Alibaba Cloud Computing (Beijing) Co., Ltd.

Unlocked 2 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 Alibaba Cloud Computing (Beijing) Co., Ltd.
Created November 15, 2002 (23 years, 9 months ago)
Expires November 15, 2026 (6 months)
Last Updated November 1, 2025
Name Servers vip3.alidns.com, vip4.alidns.com
DNSSEC Enabled
Hosting
IP Address 54.222.252.100
ASN AS55960 (BJ-GUANGHUAN-AP Beijing Guanghuan Xinwang Digital, CN)
Provider BJ-GUANGHUAN-AP Beijing Guanghuan Xinwang Digital, CN
Data source: rdap (0.3s)

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

Connection waterfall

DNS Lookup 38 ms TCP Connect 166 ms TLS Handshake 335 ms Server Processing 167 ms Content Transfer 0 ms
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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