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https://bigthink.com

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
100
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
84 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

84
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, 30 ms lookup
PASS
2 A records, 30 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 104.18.10.67, 104.18.11.67
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2606:4700::6812:b43, 2606:4700::6812:a43
Info::
2 nameserver(s) configured
Got: liv.ns.cloudflare.com, frank.ns.cloudflare.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: 30 ms
Got: 30 ms
A104.18.10.67, 104.18.11.67
AAAA2606:4700::6812:b43, 2606:4700::6812:a43
CNAME—
NSliv.ns.cloudflare.com, frank.ns.cloudflare.com
MX
10 aspmx.l.google.com
20 alt1.aspmx.l.google.com
20 alt2.aspmx.l.google.com
30 aspmx3.googlemail.com
30 aspmx2.googlemail.com
TXT
brave-ledger-verification=91274b2f4b86d4e567f1bfac3af2939e17f3789e9149f42a54e22b...
_globalsign-domain-verification=1bIUeFQan6DwxRMFkfSsKamrhvJLH8zU49c1PDyHi5
e4bo424u3f58fnv2geanpla4r5
_globalsign-domain-verification=oQMq_G3Amhi22taxA9iFT-dk_zHARxA27Z0jygBZzo
google-site-verification=Ag1fG5O40z3867zln2At8HXynDGkVy-PFYrn4TV43n8
SPF v=spf1 a mx include:servers.mcsv.net include:_spf.google.com include:mailgun.org...
google-site-verification=IQ0Q3-snTXtmIPmqxY4XEk-ucnIk9H_LTPldZQ384-o
apple-domain-verification=Y0jnqEg4a6CbdYpz
p6wbgj4mp14fnw67x42pd3bjjtk60ppk
anthropic-domain-verification-3yr2nb=R61RWTRp7eKATMAWS6ysnSgTL
facebook-domain-verification=imnsr6iaawlgvto58dd99ywxgdfkmr
google-site-verification=mrT_skiiLc7lMHOIVrlqYIfL_7dqokcf255Bv4E7Dqg
_globalsign-domain-verification=2wRqY6IrIINLY7B8Qcp-qur9HsiRTO04g4gwsMmFy3
atlassian-domain-verification=Sy2DdmSX6vjBKYnPktlBtM0HVxilSLu427CbTKyytLpHVd9daK...
MS=ms59457489
CAALookup not available with standard resolver
Resolved in 30 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://bigthink.com

https://bigthink.com

89 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://bigthink.com20089 msHTTP/1.1cloudflare
A+
IPv6 Readiness
IPv6 reachable (17 ms)
PASS
IPv6 reachable (17 ms)
Info::
IPv6 is configured and reachable at 2606:4700::6812:b43, 2606:4700::6812:a43
Got: 17 ms connect
IPv6 Ready
AAAA Records 2606:4700::6812:b43, 2606:4700::6812:a43 Connection Reachable (17 ms)
A+
Crawlability
robots.txt present, sitemap with 113 URLs
PASS
robots.txt present, sitemap with 113 URLs
Info::
robots.txt is present
Got: 170 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 113 entries
Info::
Sitemap index with 113 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 170 B Sitemaps referenced 1 User-agents * Blocking No — crawling allowed
# START YOAST BLOCK
# ---------------------------
User-agent: *
Disallow:

Sitemap: https://bigthink.com/sitemap_index.xml
# ---------------------------
# END YOAST BLOCK
sitemap.xml 200 OK
Type Sitemap Index URLs 113 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.bigthink.com/
200https://bigthink.com/

Preferred variant: non-www

HTTP → HTTPS

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

Consistent

A+
Domain Intelligence
bigthink.com — via GoDaddy.com, LLC, 29 years, 7 months old
PASS
bigthink.com — via GoDaddy.com, LLC, 29 years, 7 months old
Info::
Domain registered until Jan 25, 2030 (3 years, 9 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.
Domain expiry

1319 days

January 25, 2030

SSL certificate

84 days

Issued by Google Trust Services

Domain age

29 years, 7 months

Registered January 24, 1997

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Unknown

2606:4700::6812:a43

Registrar

GoDaddy.com, LLC

Unlocked 2 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 GoDaddy.com, LLC
Created January 24, 1997 (29 years, 7 months ago)
Expires January 25, 2030 (3 years, 9 months)
Last Updated January 26, 2025
Name Servers frank.ns.cloudflare.com, liv.ns.cloudflare.com
DNSSEC Not enabled
Hosting
IP Address 2606:4700::6812:a43
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 134 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
35 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.
22 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
131 ms
Total Time Total request time from DNS lookup through full response.
135 ms

Connection waterfall

DNS Lookup 35 ms TCP Connect 16 ms TLS Handshake 22 ms Server Processing 57 ms Content Transfer 4 ms
A
CDN & Delivery
Cloudflare (DYNAMIC)
PASS
Cloudflare (DYNAMIC)
Info::
Site is served via Cloudflare CDN (edge: CDG)
Got: cf-ray: 9effd7a0f86d999f-CDG
Info::
CDN cache status: DYNAMIC
CDN Detected: Cloudflare
Provider Cloudflare Cache Status DYNAMIC Evidence cf-ray: 9effd7a0f86d999f-CDG
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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