Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.BURL Variantswww/non-www, trailing slash, HTTP→HTTPSREVIEW
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
Consistent
BTLS Certificate Expiry & Recommendations76 days until leaf cert expires — 3 issues to addressREVIEW
Certificate validity
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 Records3 A records, 37 ms lookupPASS
| A | 104.26.2.33, 104.26.3.33, 172.67.70.149 |
| AAAA | 2606:4700:20::ac43:4695, 2606:4700:20::681a:221, 2606:4700:20::681a:321 |
| CNAME | — |
| NS | anna.ns.cloudflare.com, cash.ns.cloudflare.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 | MS=ms63208939 SPF v=spf1 mx include:_spf.google.com include:amazonses.com -all mongodb-site-verification=iLPVBZkbjFGe4pz4YszIe6a2KG7U0Eja google-site-verification=jgKWN_Bx9-FlyACDYQkp5UT5VZqlidL0DDKaliqkN84 google-site-verification=d9ZvgQC_Lvg8J-GkpD6kHmBHCsuw8-A8BJXIwqCRL7g google-site-verification=b4tITLzEeeZGEpvD4mGNf3khKM4fvqejQaz9SYBQP8E have-i-been-pwned-verification=dweb_tgzo6k7eg8wn7o4fzhc021v1 google-site-verification=TakbUdLjWbZfk3W5EKfzCHCvN0r3O3TvCOsl6Q6-NkY google-site-verification=zsi_ytS9f3kFX0_IwEDRWjB9d0nb80hZdgCX9Yc-OPo |
| CAA | Lookup not available with standard resolver |
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.
ARedirect Chain1 redirect(s), 624 ms totalPASS
https://freecodecamp.org
340 ms · HTTP/1.1
https://www.freecodecamp.org/
285 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://freecodecamp.org | 302 | 340 ms | HTTP/1.1 | cloudflare |
| 2 | https://www.freecodecamp.org/ | 200 | 285 ms | HTTP/1.1 | cloudflare |
See the visual redirect chain in the HTTP Probe tab →
If permanent, use 301 instead.
302 (Found) is for genuinely temporary redirects — if this redirect is permanent, switch to 301 to preserve SEO equity.
Learn more ▾ ▴
Search engines treat 302 as temporary, keeping the original URL indexed and not transferring full link equity to the destination. Use 301 (Moved Permanently) for permanent redirects (HTTP→HTTPS, www-vs-non-www, URL restructures).
Source: Google Search Central
A+IPv6 ReadinessIPv6 reachable (16 ms)PASS
A+Crawlabilityrobots.txt present, sitemap with 4 URLsPASS
User-Agent: *
Allow: /
Sitemap: https://www.freecodecamp.org/news/sitemap.xml
A+Domain Intelligencefreecodecamp.org — via NameCheap, Inc., 11 years, 7 months oldPASS
845 days
November 3, 2028
76 days
Issued by Google Trust Services
11 years, 7 months
Registered November 3, 2014
Not enabled
Protects against DNS spoofing
Unknown
2606:4700:20::681a:221
NameCheap, Inc.
Expiry timeline
Recommended actions
- Enable DNSSEC to protect visitors from DNS spoofing
- Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.
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.
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