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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
5
PASS
3
INFO
0
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
3 PASS 5 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), 1721 ms total
REVIEW
1 redirect(s), 1721 ms total
Info::
Single redirect
Got: https://hktdc.com → https://www.hktdc.com/ (301)
Info::
WWW normalization redirect
Warning::
Redirect overhead: 1721 ms total
Got: 1721 ms

https://hktdc.com

851 ms · HTTP/1.1

301

https://www.hktdc.com/

870 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://hktdc.com301851 msHTTP/1.1Microsoft-IIS/10.0
2https://www.hktdc.com/200870 msHTTP/1.1

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.hktdc.com/
200https://hktdc.com/

Inconsistent — duplicate content risk

HTTP → HTTPS

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

Consistent

B
HTTP Probe Timing
Total 853 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
REVIEW
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
46 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
201 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
405 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
854 ms
Total Time Total request time from DNS lookup through full response.
854 ms

Connection waterfall

DNS Lookup 46 ms TCP Connect 201 ms TLS Handshake 405 ms Server Processing 202 ms Content Transfer 0 ms
B
TLS Certificate Expiry & Recommendations
37 days until leaf cert expires — 4 issues to address
REVIEW

Certificate validity

37
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 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
1 A records, 103 ms lookup
PASS
1 A records, 103 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 52.229.175.214
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
No IPv6 (AAAA) records
Info::
3 nameserver(s) configured
Got: a3-64.akam.net, a22-66.akam.net, a2-64.akam.net
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: 103 ms
Got: 103 ms
A52.229.175.214
AAAA—
CNAME—
NSa3-64.akam.net, a22-66.akam.net, a2-64.akam.net
MX
10 hktdc-com.mail.protection.outlook.com
TXT
MS=ms60798070
google-site-verification=fIZUxvQeLKT1i5YHr3wOfkHhwx8aX50-jS6UvZY43BM
SPF v=spf1 ip4:202.130.162.0/24 ip4:118.143.28.0/25 mx include:spf.protection.outloo...
v=spf2.0/pra ip4:202.130.162.0/24 ip4:118.143.28.0/25 ip4:16.162.251.37 ip4:ip4:...
qcuDkuOn2mRswM1RWdF9InFtgywpK45D6aL6nNY7YcI=
g3OsGdgPvQuR7DKUjWG2HdMO0Dtoaq5qVUgPFokBqY0=
rEyUNa2lgxTlsVyujaY9YXNyUqFZO9wa7h38CuID0wa5qI+uDyN4YMLwWkNRbJDc4n9jK8zjy5Jrp7DQ...
_globalsign-domain-verification=BfvRQzOOan5m099j8-biIaz2q8HbuJcmISNjAFazKH
CAALookup not available with standard resolver
Resolved in 103 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 159 URLs
PASS
robots.txt present, sitemap with 159 URLs
Info::
robots.txt is present
Got: 10240 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 159 entries
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 10240 B Sitemaps referenced 67 User-agents YahooSeeker, gomezagent+1.0, GomezAgent+1.0, gomezagent+2.0, MJ12bot, hl_ftien_spider, gomezagent, GomezAgent, GomezAgent+2.0, gomezagent+3.0, GomezAgent+3.0, Baiduspider, *, 80bot Blocking No — crawling allowed
# Robots.txt Last-modified 29-May-2024
 
User-agent: Baiduspider
Disallow: /sourcing/product_searchresult.htm*

User-agent: *
Disallow: /hktdc-sso-core-web/
Disallow: /hktdc-sso-ext-web/
Disallow: /hktdc-sso-admin-web/
Disallow: /hktdc-emp-admin-web/
Disallow: /bso_registration/
Disallow: /myhktdc/
Disallow: /dm/
Disallow: /fairapplication/
Disallow: /messagecenter/
Disallow: /enewsletter/
Disallow: /m/
Disallow: /crs/
Disallow: /error/
Disallow: /adsys/
Disallow: /image/
Disallow: /PROTECTED
Disallow: /home-staging/
Disallow: /rsc?
Disallow: /Captcha.jpg?
Disallow: /sourcing/popup_media.jsp?
Disallow: /sourcing/diy/
Disallow: /sourcing/sso_logout.htm?
Disallow: /sourcing/post_buying_leads.htm?
Disallow: /sourcing/dirlist_searchresult.htm?
Disallow: /sourcing/buyinglead_searchresult_gallery.htm?
Disallow: /sourcing/events_searchresult.htm?
Disallow: /sourcing/news_searchresult.htm?
Disallow: /sourcing/videos_searchresult.htm?
Disallow: /sourcing/category_result_gallery.htm?
Disallow: /sourcing/individual_regist_info.htm?
Disallow: /sourcing/mybasket.htm?
Disallow: /sourcing/enquirypage.htm?
Disallow: /sourcing/trade_alert_login.htm?
Disallow: /sourcing/company_background.htm?
Disallow: /info/web/search/
Disallow: /fair/web/search/
Disallow: /fair/web/myexhibitor/
Disallow: /fair/exlist/
Disallow: /hktdc-miportal-ext-service-web-secured/
Disallow: /hktdc-miportal-ext-service-web/
Disallow: /business-news/web/
Disallow: /business-news/autocomplete/
Disallow: /business-news/static/
Disallow: /business-news/AJAXControllerServlet?
Disallow: /business-news/Captcha.jpg?
Disallow: /business-news/Upload?
Disallow: /business-news/pdfdownloadcheckservlet?
Disallow: /business-news/pdfdownloadservlet?
Disallow: /business-news/Payment?
Disallow: /business-news/freepdfdownloadservlet?
Disallow: /business-news/SaveHtmlServlet?
Disallow: /business-news/PostComment?
Disallow: /business-news/postLogin?
Disallow: /business-news/payasyougo?
Disallow: /business-news/staticpage?
Disallow: /*?pna=true
Disallow: /small-order-suppliers/quality-control/
Disallow: /small-order-suppliers/factory-facility/
Disallow: /small-order-suppliers/client/
Disallow: /small-order-suppliers/portfolio/
Disallow: /small-order-suppliers/suppliers-products-search/
Disallow: /small-order-suppliers/newsroom/
Disallow: /small-order-suppliers/inventory-centre/
Disallow: /small-order-suppliers/matching-items/
Disallow: /small-order-suppliers/event/
Disallow: /small-order-suppliers/emagazine/
Disallow: /small-order-suppliers/events/
Disallow: /small-order-suppliers/clients/
Disallow: /small-order-suppliers/research-development/
Disallow: /small-order-suppliers/management-team/
Disallow: /small-order-suppliers/awards/
Disallow: /get?
Disallow: /mas/
Disallow: /sso_logout.htm?
Disallow: /emagweb/*/files/
Disallow: /Rejected-By-UrlScan?~/
Disallow: /sop/rsc?
Disallow: /*WT.mc_id=*
Disallow: /*WT.srch=*
Disallow: /*DCSext.dept=*
Disallow: /*fbcsid=*
Disallow: /*.aspx?
Disallow: /*.aspx$
Disallow: /sourcing/buyinglead_searchresult.htm?
Disallow: /small-order-suppliers-products/       
Disallow: /small-order-suppliers/                   
Disallow: /small-order-manufacturers-suppliers/    
Disallow: /small-order-products/    
Disallow: /cn/cgi-bin/hkei.dll/
Disallow: /cgi-bin/hkei.dll/
Disallow: /emagweb/PAC-1403/
Disallow: /emagweb/ENT-1402/
Disallow: /emagweb/JEW-1403/
Disallow: /emagweb/ENY-1312/
Disallow: /emagweb/ENT-1310/
Disallow: /emagweb/ELE-1310/
Disallow: /emagweb/HOU-1401/
Disallow: /emagweb/GPS-1401/
Disallow: /emagweb/TOY-1401/
Disallow: /emagweb/ENY-1212/
Disallow: /sourcing/products_and_services.htm?
Disallow: /sourcing/company_showroom.htm?
Disallow: /ncs/affapp/
Disallow: /ncs/aes2017/
Disallow: /ncs/aes2018/
Disallow: /info/trade-events/ci/
Disallow: /info/trade-events/PP/
Disallow: /ncs/aff2020/
Disallow: /ncs/aff2019/
Disallow: /ncs/aff2018/
Disallow: /info/trade-events/SP/en/
Disallow: /info/trade-events/SP/tc/
Disallow: /info/trade-events/SP/sc/
Disallow: /info/mi/a/tdcnews/
Disallow: /info/mi/s/tdcnews/
Disallow: /info/mi/tdcnews/
Disallow: /event/testingevent/

User-agent: 80bot
Disallow: /

User-agent: YahooSeeker 
Disallow: /

User-agent: MJ12bot
Disallow: /

User-agent: hl_ftien_spider
Disallow: /

User-agent: gomezagent
Disallow: /
User-agent: GomezAgent
Disallow: /
User-Agent: gomezagent+1.0
Disallow: /
User-Agent: GomezAgent+1.0
Disallow: /
User-Agent: gomezagent+2.0
Disallow: /
User-Agent: GomezAgent+2.0
Disallow: /
User-Agent: gomezagent+3.0
Disallow: /
User-Agent: GomezAgent+3.0
Disallow: /

Sitemap: http://www.hktdc.com/sitemap_supp_dir_en_00.xml

Sitemap: http://www.hktdc.com/sitemap_prd_paid_tc_00.xml
Sitemap: http://www.hktdc.com/sitemap_prd_paid_sc_00.xml
Sitemap: http://www.hktdc.com/sitemap_prd_paid_en_00.xml
Sitemap: http://www.hktdc.com/sitemap_prd_free_tc_00.xml
Sitemap: http://www.hktdc.com/sitemap_prd_free_sc_00.xml
Sitemap: http://www.hktdc.com/sitemap_prd_free_en_00.xml

Sitemap: http://www.hktdc.com/sitemap_co_paid_tc_00.xml
Sitemap: http://www.hktdc.com/sitemap_co_paid_sc_00.xml
Sitemap: http://www.hktdc.com/sitemap_co_paid_en_00.xml
Sitemap: http://www.hktdc.com/sitemap_co_free_tc_00.xml
Sitemap: http://www.hktdc.com/sitemap_co_free_sc_00.xml
Sitemap: http://www.hktdc.com/sitemap_co_free_en_00.xml

Sitemap: http://www.hktdc.com/sitemap_mutimedia_video_cms_en_00.xml
Sitemap: http://www.hktdc.com/sitemap_mutimedia_video_cms_tc_00.xml
Sitemap: http://www.hktdc.com/sitemap_mutimedia_video_cms_sc_00.xml

Sitemap: https://www.hktdc.com/event/centrestage/wp-content/sitemap/exhibitor_sitemap_en.xml
Sitemap: https://www.hktdc.com/event/centrestage/wp-content/sitemap/exhibitor_sitemap_tc.xml
Sitemap: https://www.hktdc.com/event/centrestage/wp-content/sitemap/exhibitor_sitemap_sc.xml
Sitemap: https://www.hktdc.com/event/centrestage/wp-content/sitemap/product_sitemap_en.xml
Sitemap: https://www.hktdc.com/event/centrestage/wp-content/sitemap/product_sitemap_tc.xml
Sitemap: https://www.hktdc.com/event/centrestage/wp-content/sitemap/product_sitemap_sc.xml

Sitemap: https://www.hktdc.com/event/deluxeprintpackhk/wp-content/sitemap/exhibitor_sitemap_en.xml
Sitemap: https://www.hktdc.com/event/deluxeprintpackhk/wp-content/sitemap/exhibitor_sitemap_tc.xml
Sitemap: https://www.hktdc.com/event/deluxeprintpackhk/wp-content/sitemap/exhibitor_sitemap_sc.xml
Sitemap: https://www.hktdc.com/event/deluxeprintpackhk/wp-content/sitemap/product_sitemap_en.xml
Sitemap: https://www.hktdc.com/event/deluxeprintpackhk/wp-content/sitemap/product_sitemap_tc.xml
Sitemap: https://www.hktdc.com/event/deluxeprintpackhk/wp-content/sitemap/product_sitemap_sc.xml

Sitemap: https://www.hktdc.com/event/ecoexpoasia/wp-content/sitemap/exhibitor_sitemap_en.xml
Sitemap: https://www.hktdc.com/event/ecoexpoasia/wp-content/sitemap/exhibitor_sitemap_tc.xml
Sitemap: https://www.hktdc.com/event/ecoexpoasia/wp-content/sitemap/exhibitor_sitemap_sc.xml
Sitemap: https://www.hktdc.com/event/ecoexpoasia/wp-content/sitemap/product_sitemap_en.xml
Sitemap: https://www.hktdc.com/event/ecoexpoasia/wp-content/sitemap/product_sitemap_tc.xml
Sitemap: https://www.hktdc.com/event/ecoexpoasia/wp-content/sitemap/product_sitemap_sc.xml

Sitemap: https://www.hktdc.com/event/electronicasia/wp-content/sitemap/exhibitor_sitemap_en.xml
Sitemap: https://www.hktdc.com/event/electronicasia/wp-content/sitemap/exhibitor_sitemap_tc.xml
Sitemap: https://www.hktdc.com/event/electronicasia/wp-content/sitemap/exhibitor_sitemap_sc.xml
Sitemap: https://www.hktdc.com/event/electronicasia/wp-content/sitemap/product_sitemap_en.xml
Sitemap: https://www.hktdc.com/event/electronicasia/wp-content/sitemap/product_sitemap_tc.xml
Sitemap: https://www.hktdc.com/event/electronicasia/wp-content/sitemap/product_sitemap_sc.xml

Sitemap: https://www.hktdc.com/event/fashioninstyle/wp-content/sitemap/exhibitor_sitemap_en.xml
Sitemap: https://www.hktdc.com/event/fashioninstyle/wp-content/sitemap/exhibitor_sitemap_tc.xml
Sitemap: https://www.hktdc.com/event/fashioninstyle/wp-content/sitemap/exhibitor_sitemap_sc.xml
Sitemap: https://www.hktdc.com/event/fashioninstyle/wp-content/sitemap/product_sitemap_en.xml
Sitemap: https://www.hktdc.com/event/fashioninstyle/wp-content/sitemap/product_sitemap_tc.xml
Sitemap: https://www.hktdc.com/event/fashioninstyle/wp-content/sitemap/product_sitemap_sc.xml

Sitemap: https://www.hktdc.com/event/foodexpopro/wp-content/sitemap/exhibitor_sitemap_en.xml
Sitemap: https://www.hktdc.com/event/foodexpopro/wp-content/sitemap/exhibitor_sitemap_tc.xml
Sitemap: https://www.hktdc.com/event/foodexpopro/wp-content/sitemap/exhibitor_sitemap_sc.xml
Sitemap: https://www.hktdc.com/event/foodexpopro/wp-content/sitemap/product_sitemap_en.xml
Sitemap: https://www.hktdc.com/event/foodexpopro/wp-content/sitemap/product_sitemap_tc.xml
Sitemap: https://www.hktdc.com/event/foodexpopro/wp-content/sitemap/product_sitemap_sc.xml

Sitemap: https://www.hktdc.com/event/hkbabyfair/wp-content/sitemap/exhibitor_sitemap_en.xml
Sitemap: https://www.hktdc.com/event/hkbabyfair/wp-content/sitemap/exhibitor_sitemap_tc.xml
Sitemap: https://www.hktdc.com/event/hkbabyfair/wp-content/sitemap/exhibitor_sitemap_sc.xml
Sitemap: https://www.hktdc.com/event/hkbabyfair/wp-content/sitemap/product_sitemap_en.xml
Sitemap: https://www.hktdc.com/event/hkbabyfair/wp-content/sitemap/product_sitemap_tc.xml
Sitemap: https://www.hktdc.com/event/hkbabyfair/wp-content/sitemap/product_sitemap_sc.xml

Sitemap: https://www.hktdc.com/event/hkbeautyexpo/wp-content/sitemap/exhibitor_sitemap_en.xml
Sitemap: https://www.hktdc.com/event/hkbeautyexpo/wp-content/sitemap/exhibitor_sitemap_tc.xml
Sitemap: https://www.hktdc.com/event/hkbeautyexpo/wp-content/sitemap/exhibitor_sitemap_sc.xml
Sitemap: https://www.hktdc.com/event/hkbeautyexpo/wp-content/sitemap/product_sitemap_en.xml
Sitemap: https://www.hktdc.com/event/hkbeautyexpo/wp-content/sitemap/product_sitemap_tc.xml
Sitemap: https://www.hktdc.com/event/hkbeautyexpo/wp-content/sitemap/product_sitemap_sc.xml

Sitemap: https://www.hktdc.com/event/hkbookfair/wp-content/sitemap/exhibitor_sitemap_en.xml
Sitemap: https://www.hktdc.com/event/hkbookfair/wp-content/sitemap/exhibitor_sitemap_tc.xml
Sitemap: https://www.hktdc.com/event/hkbookfair/wp-content/sitema
sitemap.xml 200 OK
Type URL Set URLs 159 entries Valid XML Yes
Sample URLs:
A+
Domain Intelligence
hktdc.com — via MarkMonitor Inc., 26 years, 5 months old, hosted on Microsoft Azure
PASS
hktdc.com — via MarkMonitor Inc., 26 years, 5 months old, hosted on Microsoft Azure
Info::
Domain registered until Mar 28, 2027 (11 months remaining)
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: MarkMonitor 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.
Info::
Hosting: Microsoft Azure
Got: AS8075
Domain expiry

285 days

March 28, 2027

SSL certificate

37 days

Issued by GlobalSign nv-sa

Domain age

26 years, 5 months

Registered March 28, 2000

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Microsoft Azure

ASN AS8075

52.229.175.214

Registrar

MarkMonitor Inc.

Unlocked 6 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Enable DNSSEC to protect visitors from DNS spoofing
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar MarkMonitor Inc.
Created March 28, 2000 (26 years, 5 months ago)
Expires March 28, 2027 (11 months)
Last Updated February 24, 2026
Name Servers a1-5.akam.net, a2-64.akam.net, a22-66.akam.net, a3-64.akam.net, a6-66.akam.net, a7-66.akam.net
DNSSEC Not enabled
Hosting
IP Address 52.229.175.214
ASN AS8075 (MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US)
Provider Microsoft Azure
Data source: rdap (0.3s)

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

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

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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