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https://splcenter.org

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
80
GRADE
B
FIX
1
REVIEW
3
PASS
5
INFO
0
Probed from Sao Paulo, Brazil
301 Moved Permanently
Checks
9
5 PASS 3 REVIEW 1 FIX
D
URL Variants
Action
www/non-www, trailing slash, HTTP→HTTPS
FIX
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
Critical::
HTTP version does not redirect to HTTPS
Got: HTTP 301 Expected: 301 redirect to HTTPS

www / non-www

200https://www.splcenter.org/
200https://splcenter.org/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://splcenter.org/ → http://www.splcenter.org/

HTTP version does not redirect to HTTPS

B
Redirect Chain
2 redirect(s), 618 ms total
REVIEW
2 redirect(s), 618 ms total
Warning::
2 redirects before reaching final URL
Each redirect adds latency. Try to minimize the chain to 1 hop.
Info::
HTTP to HTTPS redirect present
Info::
WWW normalization redirect
Warning::
2-hop chain could be reduced to 1 hop
Redirect directly from https://splcenter.org to https://www.splcenter.org/
Info::
Redirect overhead: 618 ms total
Got: 618 ms

https://splcenter.org

187 ms · HTTP/1.1

301

http://www.splcenter.org/

189 ms · HTTP/1.1

301

https://www.splcenter.org/

241 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://splcenter.org301187 msHTTP/1.1cloudflare
2http://www.splcenter.org/301189 msHTTP/1.1cloudflare
3https://www.splcenter.org/200241 msHTTP/1.1cloudflare

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

Redirect directly from https://splcenter.org to https://www.splcenter.org/

Why this matters

Redirect chain could be flattened to one hop — server config tweak removes intermediate latency.

Source: web.dev

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
41 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

41
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
2 A records, 9 ms lookup
PASS
2 A records, 9 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 141.193.213.20, 141.193.213.21
Info::
No IPv6 (AAAA) records
Info::
4 nameserver(s) configured
Got: pdns109.ultradns.biz, pdns109.ultradns.com, pdns109.ultradns.net, pdns109.ultradns.org
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: 9 ms
Got: 9 ms
A141.193.213.20, 141.193.213.21
AAAA—
CNAME—
NSpdns109.ultradns.biz, pdns109.ultradns.com, pdns109.ultradns.net, pdns109.ultradns.org
MX
0 splcenter-org.mail.protection.outlook.com
TXT
lnM88ikt1MR%
MS=ms81083436
MS=ms89497896
_8phsdyh0kcb3vca4e88kxqfn81vjott
zoom_verify_xgm-donfq0et7r-fogcwbw
mandrill_verify.T8C7ml-5BKZrkDhFUZD21A
SPF v=spf1 redirect=splcenter.org.on.autospf.email
lucidlink-verification=C5WZGB7G55A41XBGDAK5EQQPFW
facebook-domain-verification=2z2q977kozsap8p6y5qe84kky82wvb
google-site-verification=Tywnl5Ms2LQtkPFr4HH0VehdirKQsISEJzAyyZOq4ps
google-site-verification=ZL1OB4_-sGXauD48SdmxzgzcpuKy32d8qhDa6TAjI40
wrike-verification=MjE3OTE4ODo4ODg3MmZkNDlkMTY0ZGI1MjY4MTUwYmZlYTExZWM5NzdjMGU5O...
CAALookup not available with standard resolver
Resolved in 9 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 30 URLs
PASS
robots.txt present, sitemap with 30 URLs
Info::
robots.txt is present
Got: 191 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 30 entries
Info::
Sitemap index with 30 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 191 B Sitemaps referenced 1 User-agents * Blocking No — crawling allowed
Crawl-delay: 10
# START YOAST BLOCK
# ---------------------------
User-agent: *
Disallow:

Sitemap: https://www.splcenter.org/sitemap_index.xml
# ---------------------------
# END YOAST BLOCK
sitemap.xml 200 OK
Type Sitemap Index URLs 30 entries Valid XML Yes
Child Sitemaps:
A+
Domain Intelligence
splcenter.org — via Network Solutions, LLC, 29 years, 10 months old, hosted on Cloudflare
PASS
splcenter.org — via Network Solutions, LLC, 29 years, 10 months old, hosted on Cloudflare
Info::
Domain registered until Oct 31, 2027 (1 years, 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: Network Solutions, 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: Cloudflare
Got: AS209242
Domain expiry

502 days

October 31, 2027

SSL certificate

41 days

Issued by Google Trust Services

Domain age

29 years, 10 months

Registered November 1, 1996

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Cloudflare

ASN AS209242

141.193.213.20

Registrar

Network Solutions, LLC

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 Network Solutions, LLC
Created November 1, 1996 (29 years, 10 months ago)
Expires October 31, 2027 (1 years, 6 months)
Last Updated September 8, 2024
Name Servers pdns109.ultradns.org, pdns109.ultradns.biz, pdns109.ultradns.com, pdns109.ultradns.net
DNSSEC Not enabled
Hosting
IP Address 141.193.213.20
ASN AS209242 (CLOUDFLARESPECTRUM Cloudflare, Inc., US)
Provider Cloudflare
Data source: rdap (0.5s)

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 193 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
5 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
2 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
8 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
193 ms
Total Time Total request time from DNS lookup through full response.
193 ms

Connection waterfall

DNS Lookup 5 ms TCP Connect 2 ms TLS Handshake 8 ms Server Processing 178 ms Content Transfer 0 ms
A
CDN & Delivery
Cloudflare (DYNAMIC)
PASS
Cloudflare (DYNAMIC)
Info::
Site is served via Cloudflare CDN (edge: GRU)
Got: cf-ray: 9f076a55fe98c585-GRU
Info::
CDN cache status: DYNAMIC
CDN Detected: Cloudflare
Provider Cloudflare Cache Status DYNAMIC Evidence cf-ray: 9f076a55fe98c585-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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