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https://builtwith.com

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
92
GRADE
A
FIX
1
REVIEW
2
PASS
6
INFO
0
Probed from Madrid, Spain
200 OK
Checks
9
6 PASS 2 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.

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

Certificate validity

53
days left
0d 30d 60d 90d+

Recommended actions

  • 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 OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A+
DNS Records
1 A records, 46 ms lookup
PASS
1 A records, 46 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 15.235.50.223
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
No IPv6 (AAAA) records
Info::
4 nameserver(s) configured
Got: ns-107.awsdns-13.com, ns-773.awsdns-32.net, ns-2010.awsdns-59.co.uk, ns-1234.awsdns-26.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: 46 ms
Got: 46 ms
A15.235.50.223
AAAA—
CNAME—
NSns-107.awsdns-13.com, ns-773.awsdns-32.net, ns-2010.awsdns-59.co.uk, ns-1234.awsdns-26.org
MX
1 aspmx.l.google.com
5 alt2.aspmx.l.google.com
5 alt1.aspmx.l.google.com
10 aspmx2.googlemail.com
10 aspmx3.googlemail.com
TXT
postman-domain-verification=e32f66b3c0053a75d4d771014f932b9b499ff33fb3edf05dd10d...
hubspot-developer-verification=YTFjZjBkNjAtZTU3My00NzE5LThkOTMtMDNjZWQyOTZkOWQ0
v=BIMI1;l=https://builtwith.com/bw.svg;a=
google-site-verification=bXhVsIEJKXBbCC9UcivXzaH8Xgbrz0MHJ6rNWL5PQkM
google-site-verification=zjGab-eI79Al08Yk2cM3VheLIbOkBiJCdE-z8vvpV8Y
heleket=6f267521
SPF v=spf1 include:support.zendesk.com include:spf.mtasv.net include:_spf.google.com...
hns-claim:aakjdqnihqnq22fiprqiuvd25lsrpc2ah2gp4oceaeaaaaaaaaaklzaororjdpl6qzexi7...
hubspot-developer-verification=Mjg5ZjY5NDAtMGU3My00ZmQzLWE1OTUtOGE2YjUzNmQxMjU5
CAALookup not available with standard resolver
Resolved in 46 ms

Multiple A records provide failover if one server goes down.

Why this matters

Single A record means a single point of failure — if that IP goes down, your site is unreachable until DNS TTL expires.

Learn more ▾

Add multiple A records for round-robin failover, or use a managed DNS provider with health-checked failover (Route 53, Cloudflare, NS1). Short TTL (60-300s) lets clients recover faster on outages.

Source: SRE practice / DNS architecture

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://builtwith.com

https://builtwith.com

454 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://builtwith.com200454 msHTTP/1.1Microsoft-IIS/10.0
A+
Crawlability
robots.txt present, sitemap with 37 URLs
PASS
robots.txt present, sitemap with 37 URLs
Info::
robots.txt is present
Got: 70 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 37 entries
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 70 B Sitemaps referenced 1 User-agents * Blocking No — crawling allowed
User-agent: *

Disallow:


Sitemap: https://builtwith.com/sitemap.xml
sitemap.xml 200 OK
Type URL Set URLs 37 entries Valid XML Yes
Sample URLs:
A+
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
PASS
www/non-www, trailing slash, HTTP→HTTPS
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

https://www.builtwith.com/
200https://builtwith.com/

HTTP → HTTPS

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

Consistent

A+
Domain Intelligence
builtwith.com — via NameCheap, Inc., 19 years old, hosted on OVH
PASS
builtwith.com — via NameCheap, Inc., 19 years old, hosted on OVH
Info::
Domain registered until Jul 22, 2034 (8 years, 4 months remaining)
Info::
DNSSEC is enabled
Info::
Registrar: NameCheap, 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.
Info::
Hosting: OVH
Got: AS16276
Domain expiry

2961 days

July 22, 2034

SSL certificate

53 days

Issued by Let's Encrypt

Domain age

19 years

Registered July 22, 2007

DNSSEC

Enabled

Protects against DNS spoofing

Hosting

OVH

ASN AS16276

15.235.50.223

Registrar

NameCheap, Inc.

Unlocked 4 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar NameCheap, Inc.
Created July 22, 2007 (19 years ago)
Expires July 22, 2034 (8 years, 4 months)
Last Updated March 6, 2025
Name Servers ns-107.awsdns-13.com, ns-1234.awsdns-26.org, ns-2010.awsdns-59.co.uk, ns-773.awsdns-32.net
DNSSEC Enabled
Hosting
IP Address 15.235.50.223
ASN AS16276 (OVH, FR)
Provider OVH
Data source: rdap (0.4s)

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

Connection waterfall

DNS Lookup 45 ms TCP Connect 99 ms TLS Handshake 212 ms Server Processing 141 ms Content Transfer 197 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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