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https://fliphtml5.com

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
95
GRADE
A
FIX
0
REVIEW
2
PASS
7
INFO
0
Probed from Sao Paulo, Brazil
200 OK
Checks
9
7 PASS 2 REVIEW
B
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
REVIEW
www/non-www, trailing slash, HTTP→HTTPS
Critical::
HTTP version does not redirect to HTTPS
Got: HTTP 200 Expected: 301 redirect to HTTPS

www / non-www

307https://www.fliphtml5.com/
200https://fliphtml5.com/

HTTP → HTTPS

200http://fliphtml5.com/

HTTP version does not redirect to HTTPS

B
TLS Certificate Expiry & Recommendations
339 days until leaf cert expires — 2 issues to address
REVIEW

Certificate validity

339
days left
0d 30d 60d 90d+

Recommended actions

  • Add the preload directive and submit to hstspreload.org once max-age + includeSubDomains are in place
  • Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A+
DNS Records
2 A records, 6 ms lookup
PASS
2 A records, 6 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 104.20.19.72, 172.66.166.102
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2606:4700:10::ac42:a666, 2606:4700:10::6814:1348
Info::
2 nameserver(s) configured
Got: fatima.ns.cloudflare.com, armfazh.ns.cloudflare.com
Info::
3 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: 6 ms
Got: 6 ms
A104.20.19.72, 172.66.166.102
AAAA2606:4700:10::ac42:a666, 2606:4700:10::6814:1348
CNAME—
NSfatima.ns.cloudflare.com, armfazh.ns.cloudflare.com
MX
10 mx.zoho.com
20 mx2.zoho.com
50 mx3.zoho.com
TXT
google-site-verification=0T8-ZzUHhJMx_lt1nE2TxZ8lELjm1m3sQkQy8LmrXPM
google-site-verification=8ZKkt_Fz2RRIg_dWJxAcDggjAsr32gdaZ4sui0da6q4
google-site-verification=O0KrNrwj4dQiajrJW_uhZCAkxnrc45na1V0tGUw8o9s
google-site-verification=Py4yPst949E2eaq1dry9fhGA4A1De1SO4Gc_n4sWFbI
google-site-verification=ugy06_nghOmfXiLVxE7srcY8mg3VCNJXrZ3fZ2puv3Q
google-site-verification=zeCxL1Djo5xzRIfrKVYdNMO4NvWvZIYQN0-bG_tPfC4
SPF v=spf1 mx include:zohomail.com include:_spf.zoho.com include:amazonses.com -all
CAALookup not available with standard resolver
Resolved in 6 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://fliphtml5.com

https://fliphtml5.com

33 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://fliphtml5.com20033 msHTTP/1.1cloudflare
A+
IPv6 Readiness
IPv6 reachable (1 ms)
PASS
IPv6 reachable (1 ms)
Info::
IPv6 is configured and reachable at 2606:4700:10::ac42:a666, 2606:4700:10::6814:1348
Got: 1 ms connect
IPv6 Ready
AAAA Records 2606:4700:10::ac42:a666, 2606:4700:10::6814:1348 Connection Reachable (1 ms)
A+
Crawlability
robots.txt present, sitemap with 216 URLs
PASS
robots.txt present, sitemap with 216 URLs
Info::
robots.txt is present
Got: 4244 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 216 entries
Info::
Sitemap index with 216 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 4244 B Sitemaps referenced 3 User-agents Baiduspider, Baiduspider-cpro, Baiduspider-ads, Yahoo! Slurp China, yaanibot, SemrushBot, PetalBot, 360spider-video, HaosouSpider, YisouSpider, Google-Extended, Sogou spider2, 360Spider, EasouSpider, EtaoSpider, Baiduspider-news, Baiduspider-favo, Sogou web spider, YodaoBot, *, baiduspider, Baiduspider-image, sogou spider, Sogou inst spider, Sogou Orion spider, ToutiaoSpider, AhrefsBot, Baiduspider-video, Jike Spider, 360spider-image, ChatGLM-Spider, Sosospider, Sogou News Spider, Sogou blog Blocking No — crawling allowed
User-agent: Baiduspider
Disallow: /
User-agent: baiduspider
Disallow: /
User-agent: Baiduspider-image
Disallow: /
User-agent: Baiduspider-video
Disallow: /
User-agent: Baiduspider-news
Disallow: /
User-agent: Baiduspider-favo
Disallow: /
User-agent: Baiduspider-cpro
Disallow: /
User-agent: Baiduspider-ads
Disallow: /
User-agent: Sosospider
Disallow: /
User-agent: sogou spider
Disallow: /
User-agent: Sogou News Spider
Disallow: /
User-agent: Sogou inst spider
Disallow: /
User-agent: Sogou spider2
Disallow: /
User-agent: Sogou blog
Disallow: /
User-agent: Sogou Orion spider
Disallow: /
User-agent: Sogou web spider
Disallow: /
User-agent: YodaoBot
Disallow: /
User-agent: Jike Spider
Disallow: /
User-agent: 360Spider
Disallow: /
User-agent: 360spider-image
Disallow: /
User-agent: 360spider-video
Disallow: /
User-agent: HaosouSpider
Disallow: /
User-agent: YisouSpider
Disallow: /
User-agent: EasouSpider
Disallow: /
User-agent: ToutiaoSpider
Disallow: /
User-agent: Yahoo! Slurp China
Disallow: /
User-agent: EtaoSpider
Disallow: /
User-agent: yaanibot
Disallow: /
User-agent: SemrushBot
Disallow: /
User-agent: AhrefsBot
Disallow: /
User-agent: PetalBot
Disallow: /
User-agent: ChatGLM-Spider
Disallow: /
User-agent: Google-Extended
Disallow: /help/

User-agent: *
Disallow: */edit-book/*
Disallow: /404.php
Disallow: /access-statistics.php
Disallow: /accountinfo.php
Disallow: /bookinfo.php
Disallow: /buyvip.php
Disallow: /forget-password.php
Disallow: /invoice.php
Disallow: /left.php
Disallow: /paymentinfo.php
Disallow: /payvipinfo.php
Disallow: /register-successfully.php
Disallow: /reset-password.php
Disallow: /bookvisitinfo.html
Disallow: /statistic-server/
Disallow: /api/
Disallow: /check/
Disallow: /learning-center/tags/
Disallow: /learning-center/es/tags/
Disallow: /learning-center/fr/tags/
Disallow: /learning-center/de/tags/
Disallow: /learning-center/it/tags/
Disallow: /learning-center/pt/tags/
Disallow: /learning-center/ja/tags/
Disallow: /learning-center/ar/tags/
Disallow: /learning-center/ko/tags/
Disallow: /learning-center/zh_tw/tags/
Disallow: /learning-center/ru/tags/
Disallow: /learning-center/ro/tags/
Disallow: /learning-center/tr/tags/
Disallow: /learning-center/th/tags/
Disallow: /learning-center/nl/tags/
Disallow: /learning-center/id/tags/
Disallow: /learning-center/da/tags/
Disallow: /learning-center/cs/tags/
Disallow: /learning-center/he/tags/
Disallow: /learning-center/pl/tags/
Disallow: /learning-center/el/tags/
Disallow: /learning-center/vi/tags/
Disallow: /learning-center/hu/tags/
Disallow: /learning-center/sv/tags/
Disallow: /learning-center/sk/tags/
Disallow: /learning-center/fi/tags/
Disallow: /learning-center/vi/tags/
Disallow: /learning-center/zh_cn/tags/
Disallow: /learning-center/ms/tags/
Disallow: /learning-center/uk/tags/
Disallow: /es/learning-center/tags/
Disallow: /fr/learning-center/tags/
Disallow: /de/learning-center/tags/
Disallow: /it/learning-center/tags/
Disallow: /pt/learning-center/tags/
Disallow: /ja/learning-center/tags/
Disallow: /ar/learning-center/tags/
Disallow: /ko/learning-center/tags/
Disallow: /zh_tw/learning-center/tags/
Disallow: /ru/learning-center/tags/
Disallow: /ro/learning-center/tags/
Disallow: /tr/learning-center/tags/
Disallow: /th/learning-center/tags/
Disallow: /nl/learning-center/tags/
Disallow: /id/learning-center/tags/
Disallow: /da/learning-center/tags/
Disallow: /cs/learning-center/tags/
Disallow: /he/learning-center/tags/
Disallow: /pl/learning-center/tags/
Disallow: /el/learning-center/tags/
Disallow: /vi/learning-center/tags/
Disallow: /hu/learning-center/tags/
Disallow: /sv/learning-center/tags/
Disallow: /sk/learning-center/tags/
Disallow: /fi/learning-center/tags/
Disallow: /vi/learning-center/tags/
Disallow: /zh_cn/learning-center/tags/
Disallow: /ms/learning-center/tags/
Disallow: /uk/learning-center/tags/
Disallow: /ebooks/
Disallow: /*/*/*/homepage/
Disallow: /*/*/homepage/
Disallow: /*/*/templates/
Disallow: *?search=
Disallow: /blog/page/
Disallow: /blog/*/page/
Disallow: /blog/*/*/page/
Disallow: /blog/*/*/*/page/
Disallow: /blog/*/*/*/*/page/

Sitemap: https://fliphtml5.com/sitemap/books.xml
Sitemap: https://fliphtml5.com/sitemap/latest-books.xml
Sitemap: https://fliphtml5.com/sitemap/pages.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 216 entries Valid XML Yes
Child Sitemaps:
A+
Domain Intelligence
fliphtml5.com — via GoDaddy.com, LLC, 12 years, 10 months old
PASS
fliphtml5.com — via GoDaddy.com, LLC, 12 years, 10 months old
Info::
Domain registered until Jul 31, 2026 (3 months remaining)
Info::
DNSSEC is enabled
Info::
Registrar: GoDaddy.com, LLC
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

16 days

July 31, 2026

SSL certificate

339 days

Issued by GoDaddy.com, Inc.

Domain age

12 years, 10 months

Registered July 31, 2013

DNSSEC

Enabled

Protects against DNS spoofing

Hosting

Unknown

2606:4700:10::ac42:a666

Registrar

GoDaddy.com, LLC

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 GoDaddy.com, LLC
Created July 31, 2013 (12 years, 10 months ago)
Expires July 31, 2026 (3 months)
Last Updated June 25, 2025
Name Servers armfazh.ns.cloudflare.com, fatima.ns.cloudflare.com
DNSSEC Enabled
Hosting
IP Address 2606:4700:10::ac42:a666
Data source: rdap (0.4s)

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 48 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.
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.
43 ms
Total Time Total request time from DNS lookup through full response.
48 ms

Connection waterfall

DNS Lookup 4 ms TCP Connect 1 ms TLS Handshake 9 ms Server Processing 28 ms Content Transfer 6 ms
A+
CDN & Delivery
Cloudflare (HIT)
PASS
Cloudflare (HIT)
Info::
Site is served via Cloudflare CDN (edge: GRU)
Got: cf-ray: 9efeb3453c79e03b-GRU
Info::
CDN cache status: HIT
CDN Detected: Cloudflare
Provider Cloudflare Cache Status HIT Evidence cf-ray: 9efeb3453c79e03b-GRU
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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