Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.DCDN & DeliveryActionNo CDN detectedFIX
Consider using a CDN to improve global delivery speed and reduce origin load.
CIPv6 ReadinessActionNo IPv6 supportREVIEW
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.
Source: Google IPv6 stats
CHTTP Probe TimingActionTotal 1833 ms — DNS, TCP, TLS, TTFB, content transfer breakdownREVIEW
Connection waterfall
BTLS Certificate Expiry & Recommendations344 days until leaf cert expires — 4 issues to addressREVIEW
Certificate validity
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 DNSSEC on your domain for DNS spoofing protection
- Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
ADNS Records1 A records, 125 ms lookupPASS
| A | 140.177.9.134 |
| AAAA | — |
| CNAME | — |
| NS | — |
| MX | — |
| TXT | — |
| CAA | Lookup not available with standard resolver |
Multiple A records provide failover if one server goes down.
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.
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'.
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 ChainNo redirects — direct accessPASS
https://www.wolfram.com
500 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://www.wolfram.com | 200 | 500 ms | HTTP/1.1 | Apache |
A+Crawlabilityrobots.txt present, sitemap with 7176 URLsPASS
User-agent: SemrushBot
Disallow: /
User-agent: *
Disallow: /cdf/sign/
Disallow: /company/contact/general/
Disallow: /faculty/members/
Disallow: /player/pearson/
Disallow: /products/player/pearson-cdf.cgi
Disallow: /siteinfo/
Disallow: /wolfram-u/coursewaretools/
Disallow: /unsubscribe/
Disallow: /wolframu/
Disallow: /language/elementary-introduction/1st-ed/
Disallow: /language/elementary-introduction-cloud/1st-ed/
Disallow: /language/elementary-introduction-cloud/2nd-ed/
Disallow: /legal/third-party-service-provider/data-protection-agreement/
Disallow: /legal/third-party-software/oracle-license.html
Disallow: /legal/third-party-software/pose-aware/
Disallow: /mathematica/mathematica-11.0-wordcloud.html
Disallow: /microsoft-integration/*
Disallow: /sponsorshiporderform/
User-agent: FacebookBot
Disallow: /broadcast/
User-agent: GPTBot
Disallow: /broadcast/
User-agent: Amazonbot
Disallow: /broadcast/
User-agent: PetalBot
Disallow: /broadcast/
User-agent: DotBot
Disallow: /broadcast/
User-agent: BLEXBot
Disallow: /broadcast/
User-agent: Qwantbot
Disallow: /broadcast/
User-agent: CCBot
Disallow: /broadcast/
User-agent: AhrefsBot
Disallow: /broadcast/
User-agent: MJ12bot
Disallow: /broadcast/
User-agent: SemrushBot
Disallow: /broadcast/
User-agent: YandexBot
Disallow: /broadcast/
Sitemap: https://www.wolfram.com/sitemap.xml
- https://www.wolfram.com/engine/faq/
- https://www.wolfram.com/wolfram-u/
- https://www.wolfram.com/wolfram-u/courses/stem-classroom/biomolecules-wolfram-language-stem024/
- https://www.wolfram.com/wolfram-u/courses/mathematics/2025-colloquium-fem/
- https://www.wolfram.com/wolfram-u/courses/data-science/tabular-efficient-data-processing-dat904/
A+URL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
www / non-www
Preferred variant: www
HTTP → HTTPS
Consistent
A+Domain Intelligencewolfram.com — via GoDaddy Corporate Domains, LLC, 30 years, 7 months old, hosted on WOLFRAM-AS - Wolfram Research, Inc., USPASS
230 days
February 1, 2027
344 days
Issued by GoDaddy.com, Inc.
30 years, 7 months
Registered January 31, 1996
Not enabled
Protects against DNS spoofing
WOLFRAM-AS - Wolfram Research, Inc., US
ASN AS11106
140.177.9.134
GoDaddy Corporate Domains, LLC
Expiry timeline
Recommended actions
- Enable DNSSEC to protect visitors from DNS spoofing
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