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Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
91
GRADE
A
FIX
1
REVIEW
2
PASS
6
INFO
0
Probed from Amsterdam, Netherlands
301 Moved Permanently
Checks
9
6 PASS 2 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.

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

Certificate validity

317
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
A+
DNS Records
3 A records, 5 ms lookup
PASS
3 A records, 5 ms lookup
Info::
Resolves to 3 IPv4 address(es)
Got: 54.179.140.12, 18.138.88.125, 3.0.126.123
Info::
No IPv6 (AAAA) records
Info::
4 nameserver(s) configured
Got: ns-1040.awsdns-02.org, ns-1758.awsdns-27.co.uk, ns-337.awsdns-42.com, ns-961.awsdns-56.net
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: 5 ms
Got: 5 ms
A54.179.140.12, 18.138.88.125, 3.0.126.123
AAAA—
CNAME—
NSns-1040.awsdns-02.org, ns-1758.awsdns-27.co.uk, ns-337.awsdns-42.com, ns-961.awsdns-56.net
MX
1 aspmx.l.google.com
5 alt2.aspmx.l.google.com
5 alt1.aspmx.l.google.com
10 aspmx2.googlemail.com
10 aspmx3.googlemail.com
TXT
0d1a025a-e6ab-4863-bc25-ae02d67a1496-1427251042919
869edb7a1a4b4755b0cecbb82a6ddbb3
CKO=cli_36tgrqxqfbdedaomodgfuifxku
MS=ms77972321
apple-domain-verification=oNPPjCUXYkQS81YR
google-site-verification=CyxcD2kX62JhmdRki3NTmklk2NxEClC1hmFfzjcKrb0
google-site-verification=SPdznUeC69SeyGFM8uWUGRCFZZ512KTU6HH-xIDG5Cw
google-site-verification=UmpSxIAKWnX3vu1twDKeF-thqfJnVYjh0JhI1Eby2Ec
google-site-verification=YAsbHxl6lE366QbLqMXO5BcrgXcrQqBrgnVtoOEk1Rg
google-site-verification=b4Y8U-USt4s4zhJCCgcBxzSIAy7gLtFDFwDy0rWyP0M
google-site-verification=ek862XOvBTbr1UgFUyckfs35rOOxr6wKCDuAr8k3Dvk
mixpanel-domain-verify=6d1c9ee3-0ef8-4693-9d6e-8c4484a8972d
SPF v=spf1 include:_spf.google.com include:mail.zendesk.com include:_spf.salesforce....
zoho-verification=zb13882935.zmverify.zoho.com
CAALookup not available with standard resolver
Resolved in 5 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
1 redirect(s), 676 ms total
PASS
1 redirect(s), 676 ms total
Info::
Single redirect
Got: https://klook.com → https://www.klook.com:443/ (301)
Info::
WWW normalization redirect
Info::
Redirect overhead: 676 ms total
Got: 676 ms

https://klook.com

482 ms · HTTP/1.1

301

https://www.klook.com:443/

194 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://klook.com301482 msHTTP/1.1awselb/2.0
2https://www.klook.com:443/403194 msHTTP/1.1cloudflare

See the visual redirect chain in the HTTP Probe tab →

A+
Crawlability
robots.txt present, sitemap with 597 URLs
PASS
robots.txt present, sitemap with 597 URLs
Info::
robots.txt is present
Got: 2748 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 597 entries
Info::
Sitemap index with 597 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 2748 B Sitemaps referenced 1 User-agents Baiduspider, Baiduspider-news, Baiduspider-favo, Sogou web spider, AdsBot-Google, Yeti, Baiduspider-image, Sogou inst spider, Sogou wap spider, 360Spider, 360Spider-Video, PetalBot, Baiduspider-cpro, Sogou spider, 360Spider-Image, *, Baiduspider-video, Baiduspider-ads Blocking No — crawling allowed
# Hi, we're KLOOK tech team, Nice to meet you.
# If you're an engineer, we'd be interested to have a chat with you.
# Our tech team base on Shenzhen, China.
# You can find our positions in the link below
#
# https://www.klookcareers.com/jobs/search?page=1&query=&department_uids%5B%5D=abc3335e109ded612686aca5fd32cc12

##    ## ##        #######   #######  ##    ##
##   ##  ##       ##     ## ##     ## ##   ##
##  ##   ##       ##     ## ##     ## ##  ##
#####    ##       ##     ## ##     ## #####
##  ##   ##       ##     ## ##     ## ##  ##
##   ##  ##       ##     ## ##     ## ##   ##
##    ## ########  #######   #######  ##    ##

# klook.com

#Naver Setting separate
User-agent: Yeti
Allow:/ko/
Disallow:*/search*
Disallow:/zh-TW/
Disallow:/zh-CN/
Disallow:/zh-HK/
Disallow:/th/
Disallow:/vi/
Disallow:/id/
Disallow:/ja/
Disallow:/ms-MY/
Disallow:/fr/
Disallow:/de/
Disallow:/it/
Disallow:/ru/
Disallow:/es/
Disallow:/en-GB/
Disallow:/en-AU/
Disallow:/en-SG/
Disallow:/en-CA/
Disallow:/en-HK/
Disallow:/en-IN/
Disallow:/en-MY/
Disallow:/en-NZ/
Disallow:/en-PH/
Disallow:/en-US/
Disallow:/pl/
Disallow:/cs/
Disallow:/sk/
Disallow:/bg/
Disallow:/nl/
Disallow:/ca/
Disallow:/pt-PT/
Disallow:/da/
Disallow:/sv/
Disallow:/fi/
Disallow:/nb/
Disallow:/el/
Disallow:/hu/
Disallow:/tr/
Disallow:/tl/
Disallow:/hi/
Disallow:/ta/
Disallow:/si/
Disallow:/bn/
Disallow:/pt-BR/
Disallow:/ro/
Disallow:/en-AE/
Disallow:/event/
Disallow:/invite/
Disallow:/preview/
Disallow:/my_klook/
Disallow:/voucher/

User-agent:Baiduspider
User-agent:Baiduspider-image
User-agent:Baiduspider-video
User-agent:Baiduspider-news
User-agent:Baiduspider-favo
User-agent:Baiduspider-cpro
User-agent:Baiduspider-ads
User-agent:Sogou web spider
User-agent:Sogou inst spider
User-agent:Sogou spider
User-agent:Sogou wap spider
User-agent:360Spider
User-agent:360Spider-Image
User-agent:360Spider-Video
Disallow:/zh-CN/

#block PetalBot
User-agent: PetalBot
Disallow: /


User-Agent: *
#block hotel api
Disallow:/v1/hotelapiserv/hotelapi/review/list
Disallow:/xos_api/v1/hotelapiserv/hotelapi/review/list
Disallow:/v1/hotelapiserv/hotelapi/review/recommend
Disallow:/xos_api/v1/hotelapiserv/hotelapi/review/recommend
Disallow:/v2/hotelapiserv/hotelapi/destination*
Disallow:/v3/hotelapiserv/hotelapi/voucherList*
Disallow:/v3/hotelapiserv/hotelapi/addOn*
Disallow:/v1/hotelapiserv/hotelapi/hotelImgs*
Disallow:/v1/hotelapiserv/hotelapi/hotelNearByInfo*
Disallow: */search/*
Disallow: */searchresult/*
#block voucher
Disallow: */voucher/
Allow: */event/search/*
#block useless pages
Disallow:/*nuxt_page/*
Disallow:/*new-web_page/*
Disallow:*/preview/


User-agent: AdsBot-Google
Disallow: */rails-4/364891-europe/search/*

# sitemap
Sitemap: https://www.klook.com/sitemap.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 597 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::
HTTP correctly 301-redirects to HTTPS

www / non-www

403https://www.klook.com/
200https://klook.com/

HTTP → HTTPS

301http://klook.com/ → https://klook.com:443/

Consistent

A+
Domain Intelligence
klook.com — via MarkMonitor Inc., 20 years, 8 months old, hosted on AWS
PASS
klook.com — via MarkMonitor Inc., 20 years, 8 months old, hosted on AWS
Info::
Domain registered until Nov 15, 2027 (1 years, 7 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: AWS
Got: AS16509
Domain expiry

488 days

November 15, 2027

SSL certificate

317 days

Issued by Amazon

Domain age

20 years, 8 months

Registered November 15, 2005

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

AWS

ASN AS16509

18.138.88.125

Registrar

MarkMonitor Inc.

Unlocked 4 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 November 15, 2005 (20 years, 8 months ago)
Expires November 15, 2027 (1 years, 7 months)
Last Updated January 21, 2025
Name Servers ns-1040.awsdns-02.org, ns-1758.awsdns-27.co.uk, ns-337.awsdns-42.com, ns-961.awsdns-56.net
DNSSEC Not enabled
Hosting
IP Address 18.138.88.125
ASN AS16509 (AMAZON-02 - Amazon.com, Inc., US)
Provider AWS
Data source: rdap (0.2s)

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

A
HTTP Probe Timing
Total 475 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
4 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
156 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
158 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
475 ms
Total Time Total request time from DNS lookup through full response.
476 ms

Connection waterfall

DNS Lookup 4 ms TCP Connect 156 ms TLS Handshake 158 ms Server Processing 157 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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