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https://pbskids.org

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
98
GRADE
A+
FIX
0
REVIEW
1
PASS
8
INFO
0
Probed from Madrid, Spain
200 OK
Checks
9
8 PASS 1 REVIEW
B
TLS Certificate Expiry & Recommendations
320 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

320
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
4 A records, 67 ms lookup
PASS
4 A records, 67 ms lookup
Info::
Resolves to 4 IPv4 address(es)
Got: 13.227.231.63, 13.227.231.41, 13.227.231.16, 13.227.231.117
Info::
Has 8 IPv6 (AAAA) record(s)
Got: 2600:9000:2035:b000:1c:c8c6:9740:93a1, 2600:9000:2035:5400:1c:c8c6:9740:93a1, 2600:9000:2035:d200:1c:c8c6:9740:93a1, 2600:9000:2035:a00:1c:c8c6:9740:93a1, 2600:9000:2035:8e00:1c:c8c6:9740:93a1, 2600:9000:2035:7e00:1c:c8c6:9740:93a1, 2600:9000:2035:200:1c:c8c6:9740:93a1, 2600:9000:2035:1a00:1c:c8c6:9740:93a1
Info::
4 nameserver(s) configured
Got: ns-1674.awsdns-17.co.uk, ns-806.awsdns-36.net, ns-1230.awsdns-25.org, ns-193.awsdns-24.com
Info::
No MX records — email not configured via DNS
Info::
CAA records not checked
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Info::
No SPF record found in TXT records
SPF helps prevent email spoofing. Add a TXT record starting with 'v=spf1'.
Info::
DNS resolution time: 67 ms
Got: 67 ms
A13.227.231.63, 13.227.231.41, 13.227.231.16, 13.227.231.117
AAAA2600:9000:2035:b000:1c:c8c6:9740:93a1, 2600:9000:2035:5400:1c:c8c6:9740:93a1, 2600:9000:2035:d200:1c:c8c6:9740:93a1, 2600:9000:2035:a00:1c:c8c6:9740:93a1, 2600:9000:2035:8e00:1c:c8c6:9740:93a1, 2600:9000:2035:7e00:1c:c8c6:9740:93a1, 2600:9000:2035:200:1c:c8c6:9740:93a1, 2600:9000:2035:1a00:1c:c8c6:9740:93a1
CNAME—
NSns-1674.awsdns-17.co.uk, ns-806.awsdns-36.net, ns-1230.awsdns-25.org, ns-193.awsdns-24.com
MX—
TXT
detectify-verification=1583bf00b85b6570195c4ec81a2625ae
_36xxkcs42po5x18kg5c93culgsapw5n
google-site-verification=MtN8Xo-V0A3_JAyS9mspwQAgPAlgHOsmYKKk698sdHo
h2d4qwy9q6wwds2lnkm0jjp6dcqv3rbf
lf088sl8y8gdlgwnsj9f3zxdjlq1gg5v
google-site-verification=tt6cOq-TKrsybpLT0hp48HmZcHKqis0QVLAKl4IdkZY
CAALookup not available with standard resolver
Resolved in 67 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.

SPF helps prevent email spoofing. Add a TXT record starting with 'v=spf1'.

Why this matters

Without SPF, receiving servers can't validate sending IPs — your domain is easier to spoof in phishing.

Learn more ▾

SPF complements DMARC. Both should be published. SPF records list authorized sending IPs (e.g., `v=spf1 include:_spf.google.com ~all` for Google Workspace). After publishing, verify in Google Postmaster Tools or mxtoolbox.

Source: RFC 7208 (SPF)

A+
Redirect Chain
No redirects — direct access
PASS
No redirects — direct access
Info::
No redirects — direct access
Got: https://pbskids.org

https://pbskids.org

60 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://pbskids.org20060 msHTTP/1.1CloudFront
A+
IPv6 Readiness
IPv6 reachable (16 ms)
PASS
IPv6 reachable (16 ms)
Info::
IPv6 is configured and reachable at 2600:9000:2035:b000:1c:c8c6:9740:93a1, 2600:9000:2035:5400:1c:c8c6:9740:93a1, 2600:9000:2035:d200:1c:c8c6:9740:93a1, 2600:9000:2035:a00:1c:c8c6:9740:93a1, 2600:9000:2035:8e00:1c:c8c6:9740:93a1, 2600:9000:2035:7e00:1c:c8c6:9740:93a1, 2600:9000:2035:200:1c:c8c6:9740:93a1, 2600:9000:2035:1a00:1c:c8c6:9740:93a1
Got: 16 ms connect
IPv6 Ready
AAAA Records 2600:9000:2035:b000:1c:c8c6:9740:93a1, 2600:9000:2035:5400:1c:c8c6:9740:93a1, 2600:9000:2035:d200:1c:c8c6:9740:93a1, 2600:9000:2035:a00:1c:c8c6:9740:93a1, 2600:9000:2035:8e00:1c:c8c6:9740:93a1, 2600:9000:2035:7e00:1c:c8c6:9740:93a1, 2600:9000:2035:200:1c:c8c6:9740:93a1, 2600:9000:2035:1a00:1c:c8c6:9740:93a1 Connection Reachable (16 ms)
A+
Crawlability
robots.txt present, sitemap with 446 URLs
PASS
robots.txt present, sitemap with 446 URLs
Info::
robots.txt is present
Got: 317 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 446 entries
Info::
Sitemap index with 446 child sitemaps
Info::
robots.txt does not reference a sitemap
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

Why this matters

robots.txt omits Sitemap: directive — crawlers must fetch /sitemap.xml by convention; reliable but missing the explicit hint.

Source: sitemaps.org

robots.txt 200 OK
Size 317 B Sitemaps referenced 0 User-agents CCBot, *, Googlebot, GPTBot Blocking No — crawling allowed
User-agent: *
Disallow: /cgi-bin/
Disallow: /cgi-registry/
Disallow: /in_your_town/
Disallow: /tvschedules/

User-agent: Googlebot
Disallow: /cgi-bin/
Allow: /cgi-registry/golocal
Disallow: /cgi-registry/
Disallow: /in_your_town/
Disallow: /tvschedules/

User-agent: GPTBot
Disallow: /

User-agent: CCBot
Disallow: /
sitemap.xml 200 OK
Type Sitemap Index URLs 446 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.pbskids.org/
200https://pbskids.org/

Preferred variant: non-www

HTTP → HTTPS

301http://pbskids.org/ → https://pbskids.org/

Consistent

A+
Domain Intelligence
pbskids.org — via CSC Corporate Domains, Inc., 27 years, 5 months old
PASS
pbskids.org — via CSC Corporate Domains, Inc., 27 years, 5 months old
Info::
Domain registered until Apr 9, 2027 (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: CSC Corporate Domains, 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.
Domain expiry

268 days

April 9, 2027

SSL certificate

320 days

Issued by Amazon

Domain age

27 years, 5 months

Registered April 9, 1999

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Unknown

2600:9000:2035:5400:1c:c8c6:9740:93a1

Registrar

CSC Corporate Domains, 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 CSC Corporate Domains, Inc.
Created April 9, 1999 (27 years, 5 months ago)
Expires April 9, 2027 (11 months)
Last Updated April 10, 2026
Name Servers ns-1230.awsdns-25.org, ns-1674.awsdns-17.co.uk, ns-193.awsdns-24.com, ns-806.awsdns-36.net
DNSSEC Not enabled
Hosting
IP Address 2600:9000:2035:5400:1c:c8c6:9740:93a1
Data source: rdap (0.4s)

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 104 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
47 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.
104 ms
Total Time Total request time from DNS lookup through full response.
105 ms

Connection waterfall

DNS Lookup 47 ms TCP Connect 16 ms TLS Handshake 19 ms Server Processing 23 ms Content Transfer 0 ms
A+
CDN & Delivery
AWS CloudFront (Hit from cloudfront)
PASS
AWS CloudFront (Hit from cloudfront)
Info::
Site is served via AWS CloudFront CDN (edge: IAD61-P6)
Got: x-amz-cf-id: L8B7gUSCWN75e_7uwXcb68YXjo8DnImEbajvZ-YCWtOutqyu1PbLZw==
Info::
CDN cache status: Hit from cloudfront
CDN Detected: AWS CloudFront
Provider AWS CloudFront Cache Status Hit from cloudfront Evidence x-amz-cf-id: L8B7gUSCWN75e_7uwXcb68YXjo8DnImEbajvZ-YCWtOutqyu1PbLZw==
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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