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https://yumpu.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 Madrid, Spain
301 Moved Permanently
Checks
9
7 PASS 2 REVIEW
B
Redirect Chain
2 redirect(s), 451 ms total
REVIEW
2 redirect(s), 451 ms total
Warning::
2 redirects before reaching final URL
Each redirect adds latency. Try to minimize the chain to 1 hop.
Info::
WWW normalization redirect

https://yumpu.com

73 ms · HTTP/1.1

301

https://www.yumpu.com/

118 ms · HTTP/1.1

301

https://www.yumpu.com/en

260 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://yumpu.com30173 msHTTP/1.1Apache
2https://www.yumpu.com/301118 msHTTP/1.1Apache
3https://www.yumpu.com/en200260 msHTTP/1.1Apache

See the visual redirect chain in the HTTP Probe tab →

Each redirect adds latency. Try to minimize the chain to 1 hop.

Why this matters

Redirect chain — each hop adds latency; combine into one redirect where possible.

Source: Google Search Central / web.dev

B
TLS Certificate Expiry & Recommendations
225 days until leaf cert expires — 4 issues to address
REVIEW

Certificate validity

225
days left
0d 30d 60d 90d+

Recommended actions

  • Add includeSubDomains to the HSTS directive
  • Add the preload directive and submit to hstspreload.org once max-age + includeSubDomains are in place
  • 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
4 A records, 45 ms lookup
PASS
4 A records, 45 ms lookup
Info::
Resolves to 4 IPv4 address(es)
Got: 52.222.201.69, 52.222.201.41, 52.222.201.7, 52.222.201.94
Info::
Has 8 IPv6 (AAAA) record(s)
Got: 2600:9000:218d:2200:e:4fd3:d580:93a1, 2600:9000:218d:1a00:e:4fd3:d580:93a1, 2600:9000:218d:fa00:e:4fd3:d580:93a1, 2600:9000:218d:d600:e:4fd3:d580:93a1, 2600:9000:218d:e600:e:4fd3:d580:93a1, 2600:9000:218d:7600:e:4fd3:d580:93a1, 2600:9000:218d:5c00:e:4fd3:d580:93a1, 2600:9000:218d:9400:e:4fd3:d580:93a1
Info::
4 nameserver(s) configured
Got: ns-602.awsdns-11.net, ns-246.awsdns-30.com, ns-1889.awsdns-44.co.uk, ns-1419.awsdns-49.org
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: 45 ms
Got: 45 ms
A52.222.201.69, 52.222.201.41, 52.222.201.7, 52.222.201.94
AAAA2600:9000:218d:2200:e:4fd3:d580:93a1, 2600:9000:218d:1a00:e:4fd3:d580:93a1, 2600:9000:218d:fa00:e:4fd3:d580:93a1, 2600:9000:218d:d600:e:4fd3:d580:93a1, 2600:9000:218d:e600:e:4fd3:d580:93a1, 2600:9000:218d:7600:e:4fd3:d580:93a1, 2600:9000:218d:5c00:e:4fd3:d580:93a1, 2600:9000:218d:9400:e:4fd3:d580:93a1
CNAME—
NSns-602.awsdns-11.net, ns-246.awsdns-30.com, ns-1889.awsdns-44.co.uk, ns-1419.awsdns-49.org
MX
1 aspmx.l.google.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com
10 alt3.aspmx.l.google.com
10 alt4.aspmx.l.google.com
TXT
google-site-verification=QPg4s-mRuy8M7cHh4fC6cDWNuzmZDFDnfUwSWO7Zuzs
google-site-verification=DBEzDwmYncSryadhtQ9jA8qYJtGiVsJuS8xqaHQVpsU
google-site-verification=5C8fx2_25BFTeH2PPzTJjIa68cgEuX3WzSDvtWA0ETc
ahrefs-site-verification_7b2882f712127ed71b4066856b33fd7831312147649bfb4d0a7cd1d...
google-site-verification=kCMc9x96tljgVcYpxb9oZ10CahCKyHPe6BYfPMNXf9E
facebook-domain-verification=vhnaklycc1utt9mykz0a85jqtajcpx
SPF v=spf1 include:spf.mail.intercom.io include:_spf.google.com ~all
CAALookup not available with standard resolver
Resolved in 45 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+
IPv6 Readiness
IPv6 reachable (16 ms)
PASS
IPv6 reachable (16 ms)
Info::
IPv6 is configured and reachable at 2600:9000:218d:2200:e:4fd3:d580:93a1, 2600:9000:218d:1a00:e:4fd3:d580:93a1, 2600:9000:218d:fa00:e:4fd3:d580:93a1, 2600:9000:218d:d600:e:4fd3:d580:93a1, 2600:9000:218d:e600:e:4fd3:d580:93a1, 2600:9000:218d:7600:e:4fd3:d580:93a1, 2600:9000:218d:5c00:e:4fd3:d580:93a1, 2600:9000:218d:9400:e:4fd3:d580:93a1
Got: 16 ms connect
IPv6 Ready
AAAA Records 2600:9000:218d:2200:e:4fd3:d580:93a1, 2600:9000:218d:1a00:e:4fd3:d580:93a1, 2600:9000:218d:fa00:e:4fd3:d580:93a1, 2600:9000:218d:d600:e:4fd3:d580:93a1, 2600:9000:218d:e600:e:4fd3:d580:93a1, 2600:9000:218d:7600:e:4fd3:d580:93a1, 2600:9000:218d:5c00:e:4fd3:d580:93a1, 2600:9000:218d:9400:e:4fd3:d580:93a1 Connection Reachable (16 ms)
A+
Crawlability
robots.txt present, sitemap with 18013 URLs
PASS
robots.txt present, sitemap with 18013 URLs
Info::
robots.txt is present
Got: 3105 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 18013 entries
Info::
Sitemap index with 18013 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 3105 B Sitemaps referenced 2 User-agents Google-Extended, Applebot-Extended, GPTBot, BLEXBot, PerplexityBot, Bingbot, ClaudeBot, Claude-Web, meta-externalagent, Claude-SearchBot, *, anthropic-ai Blocking No — crawling allowed
User-agent: *

#Disallow urls
Disallow: /document/forward/
Disallow: /document/forward_mail/
Disallow: /document/inappropriate/
Disallow: /document/embed_generator_code/
Disallow: /document/embed_generator/
Disallow: /document/readers/
Disallow: /document/rating/
Disallow: /document/search_text/
Disallow: /document/search/
Disallow: /document/tag/
Disallow: /document/progress/
Disallow: /document/create/
Disallow: /document/edit/
Disallow: /document/delete/
Disallow: /document/view_more/
Disallow: /document/views/
Disallow: /document/comments/
Disallow: /utils/
Disallow: /bookshelf/
Disallow: /browse/more_page/
Disallow: /magazine/get_comment/
Disallow: /upload/forgot_password/
Disallow: /upload/cloud/
Disallow: /upload/analyse/
Disallow: /document/download/
Disallow: /user/connect/

#Disallow urls with index.php
Disallow: /index.php/document/forward/
Disallow: /index.php/document/forward_mail/
Disallow: /index.php/document/inappropriate/
Disallow: /index.php/document/embed_generator_code/
Disallow: /index.php/document/embed_generator/
Disallow: /index.php/document/readers/
Disallow: /index.php/document/rating/
Disallow: /index.php/document/search_text/
Disallow: /index.php/document/search/
Disallow: /index.php/document/tag/
Disallow: /index.php/document/progress/
Disallow: /index.php/document/create/
Disallow: /index.php/document/edit/
Disallow: /index.php/document/delete/
Disallow: /index.php/document/view_more/
Disallow: /index.php/document/views/
Disallow: /index.php/document/comments/
Disallow: /index.php/document/json/
Disallow: /index.php/document/json2/
Disallow: /index.php/utils/
Disallow: /index.php/bookshelf/
Disallow: /index.php/browse/more_page/
Disallow: /index.php/magazine/get_comment/
Disallow: /index.php/upload/forgot_password/
Disallow: /index.php/upload/cloud/
Disallow: /index.php/upload/analyse/

#Disallow urls with language iso
Disallow: /*/document/forward/
Disallow: /*/document/forward_mail/
Disallow: /*/document/inappropriate/
Disallow: /*/document/embed_generator_code/
Disallow: /*/document/embed_generator/
Disallow: /*/document/readers/
Disallow: /*/document/rating/
Disallow: /*/document/search_text/
Disallow: /*/document/search/
Disallow: /*/document/tag/
Disallow: /*/document/progress/
Disallow: /*/document/create/
Disallow: /*/document/edit/
Disallow: /*/document/delete/
Disallow: /*/document/view_more/
Disallow: /*/document/views/
Disallow: /*/document/comments/
Disallow: /*/utils/
Disallow: /*/bookshelf/
Disallow: /*/browse/more_page/
Disallow: /*/magazine/get_comment/
Disallow: /*/upload/forgot_password/
Disallow: /*/upload/cloud/
Disallow: /*/upload/analyse/
Disallow: /*/user/social_auth/
Disallow: /*/document/download/

Allow: /

User-agent: anthropic-ai
User-agent: ClaudeBot
User-agent: Claude-Web
User-agent: Google-Extended
User-agent: Applebot-Extended
User-agent: GPTBot
User-agent: BLEXBot
User-agent: meta-externalagent
User-agent: PerplexityBot
User-agent: Claude-SearchBot
Disallow: /

Sitemap: https://www.yumpu.com/sitemap.xml
Sitemap: https://www.yumpu.com/sitemap_news.xml

User-agent: Bingbot
Crawl-delay: 5
sitemap.xml 200 OK
Type Sitemap Index URLs 18013 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.yumpu.com/
200https://yumpu.com/

Preferred variant: non-www

HTTP → HTTPS

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

Consistent

A+
Domain Intelligence
yumpu.com — via united-domains GmbH, 15 years, 8 months old
PASS
yumpu.com — via united-domains GmbH, 15 years, 8 months old
Info::
Domain registered until Nov 9, 2026 (6 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: united-domains GmbH
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

117 days

November 9, 2026

SSL certificate

225 days

Issued by Amazon

Domain age

15 years, 8 months

Registered November 9, 2010

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Unknown

2600:9000:218d:4800:e:4fd3:d580:93a1

Registrar

united-domains GmbH

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 united-domains GmbH
Created November 9, 2010 (15 years, 8 months ago)
Expires November 9, 2026 (6 months)
Last Updated March 25, 2026
Name Servers ns-1419.awsdns-49.org, ns-1889.awsdns-44.co.uk, ns-246.awsdns-30.com, ns-602.awsdns-11.net
DNSSEC Not enabled
Hosting
IP Address 2600:9000:218d:4800:e:4fd3:d580:93a1
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 111 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
39 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
16 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
19 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
111 ms
Total Time Total request time from DNS lookup through full response.
111 ms

Connection waterfall

DNS Lookup 39 ms TCP Connect 16 ms TLS Handshake 19 ms Server Processing 37 ms Content Transfer 0 ms
A
CDN & Delivery
AWS CloudFront (Miss from cloudfront)
PASS
AWS CloudFront (Miss from cloudfront)
Info::
Site is served via AWS CloudFront CDN (edge: CDG50-P2)
Got: x-amz-cf-id: xhjbS0gfWKHQneGxm-qyH1cqEIPYWKwxLPE_M5t7ifDJPBUG-ibXDw==
Info::
CDN cache status: Miss from cloudfront
CDN Detected: AWS CloudFront
Provider AWS CloudFront Cache Status Miss from cloudfront Evidence x-amz-cf-id: xhjbS0gfWKHQneGxm-qyH1cqEIPYWKwxLPE_M5t7ifDJPBUG-ibXDw==
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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