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https://slideserve.com

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
84
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), 1556 ms total
REVIEW
1 redirect(s), 1556 ms total
Info::
Single redirect
Got: https://slideserve.com → https://www.slideserve.com:443/ (301)
Info::
WWW normalization redirect
Warning::
Redirect overhead: 1556 ms total
Got: 1556 ms

https://slideserve.com

716 ms · HTTP/1.1

301

https://www.slideserve.com:443/

840 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://slideserve.com301716 msHTTP/1.1awselb/2.0
2https://www.slideserve.com:443/200840 msHTTP/1.1nginx/1.24.0 (Ubuntu)

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.slideserve.com/
200https://slideserve.com/

Inconsistent — duplicate content risk

HTTP → HTTPS

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

Consistent

B
TLS Certificate Expiry & Recommendations
30 days until leaf cert expires — 5 issues to address
REVIEW

Certificate validity

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

Recommended actions

  • Renew certificate — 30 days remaining
  • 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
4 A records, 52 ms lookup
PASS
4 A records, 52 ms lookup
Info::
Resolves to 4 IPv4 address(es)
Got: 54.184.135.127, 44.224.107.246, 54.201.79.62, 44.238.159.149
Info::
No IPv6 (AAAA) records
Info::
6 nameserver(s) configured
Got: ns41.constellix.net, ns61.constellix.net, ns11.constellix.com, ns51.constellix.net, ns31.constellix.com, ns21.constellix.com
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: 52 ms
Got: 52 ms
A54.184.135.127, 44.224.107.246, 54.201.79.62, 44.238.159.149
AAAA—
CNAME—
NSns41.constellix.net, ns61.constellix.net, ns11.constellix.com, ns51.constellix.net, ns31.constellix.com, ns21.constellix.com
MX
1 aspmx.l.google.com
5 alt2.aspmx.l.google.com
5 alt1.aspmx.l.google.com
10 alt3.aspmx.l.google.com
10 alt4.aspmx.l.google.com
TXT
google-site-verification=63YkSCKyenKHr_LtwvwGM5LhOh_8_gzRts7Nv5382GU
SPF v=spf1 include:_spf.google.com include:sendgrid.net ~all
CAALookup not available with standard resolver
Resolved in 52 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+
Crawlability
robots.txt present, sitemap with 530 URLs
PASS
robots.txt present, sitemap with 530 URLs
Info::
robots.txt is present
Got: 842 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 530 entries
Info::
Sitemap index with 530 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 842 B Sitemaps referenced 1 User-agents * Blocking No — crawling allowed
Sitemap: https://www.slideserve.com/sitemap/sitemap.xml
User-agent: *
Disallow: /siteadmin/
Disallow: /cache/
Disallow: /include/
Disallow: /install/
Disallow: /language/
Disallow: /flvideo/
Disallow: /tmp/
Disallow: /classes/
Disallow: /smarty/
Disallow: /templates/
Disallow: /tools/
Disallow: /PPTFiles/
Disallow: /Download/
Disallow: /swf/
Disallow: /embed/
Disallow: /presentation/
Disallow: /tags/
Disallow: /ppt-templates/
Disallow: /profile/
Disallow: /manage/
Disallow: /users/
Disallow: /publish/
Disallow: /search/presentations/
Disallow: /PHPRenderForHTML.php
Disallow: /downloads
Disallow: /newsletter/
Disallow: /html5point/
Disallow: /file-download/
Disallow: /level2/
Disallow: /account/
Disallow: /view/
Disallow: /subscribe/
Disallow: /amp/
Disallow: /actions/
Disallow: /mobile/
Disallow: /photo/
Disallow: /*?fitview=true
sitemap.xml 200 OK
Type Sitemap Index URLs 530 entries Valid XML Yes
Child Sitemaps:
A+
Domain Intelligence
slideserve.com — via GoDaddy.com, LLC, 18 years, 3 months old, hosted on AWS
PASS
slideserve.com — via GoDaddy.com, LLC, 18 years, 3 months old, hosted on AWS
Info::
Domain registered until Apr 9, 2028 (1 years, 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: 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.
Info::
Hosting: AWS
Got: AS16509
Domain expiry

633 days

April 9, 2028

SSL certificate

30 days

Issued by Sectigo Limited

Domain age

18 years, 3 months

Registered April 9, 2008

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

AWS

ASN AS16509

44.238.159.149

Registrar

GoDaddy.com, LLC

Unlocked 6 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Renew the TLS certificate or verify auto-renewal is working
  • Enable DNSSEC to protect visitors from DNS spoofing
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar GoDaddy.com, LLC
Created April 9, 2008 (18 years, 3 months ago)
Expires April 9, 2028 (1 years, 11 months)
Last Updated April 10, 2023
Name Servers ns11.constellix.com, ns21.constellix.com, ns31.constellix.com, ns41.constellix.net, ns51.constellix.net, ns61.constellix.net
DNSSEC Not enabled
Hosting
IP Address 44.238.159.149
ASN AS16509 (AMAZON-02 - Amazon.com, Inc., US)
Provider AWS
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

A
HTTP Probe Timing
Total 789 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
80 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
176 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
356 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
790 ms
Total Time Total request time from DNS lookup through full response.
790 ms

Connection waterfall

DNS Lookup 80 ms TCP Connect 176 ms TLS Handshake 356 ms Server Processing 178 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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