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
BURL Variantswww/non-www, trailing slash, HTTP→HTTPSREVIEW
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
Consistent
BTLS Certificate Expiry & Recommendations235 days until leaf cert expires — 4 issues to addressREVIEW
Certificate validity
Recommended actions
- Add includeSubDomains to the HSTS directive
- Add the preload directive and submit to hstspreload.org once max-age + includeSubDomains are in place
- 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, 1015 ms lookupPASS
| A | 159.60.134.0 |
| AAAA | — |
| CNAME | — |
| NS | pdns131.f5.com, pdns150.f5.com, pdns151.f5.com, pdns130.f5.com |
| MX | 10 mx1.hc5801-97.iphmx.com 10 mx2.hc5801-97.iphmx.com |
| TXT | adobe-idp-site-verification=9af818c65525c17f45bb3b16b01b1292a6deed65c3f1f2b5815d... cisco-ci-domain-verification=6a1e8be23a89b503b322d717459a6e8485a5875162146fb1b75... atlassian-domain-verification=P1MVRYjo3N9ccfO1UcT5dJ6/Kgk15DSGNlWDMwnLtKrkvMEiLe... SPF v=spf1 ip4:173.193.210.32/27 ip4:50.23.218.192/27 ip4:174.37.226.64/27 ip4:208.4... MS=ms50853128 lucid-verification=58MzWUiZFz40 dropbox-domain-verification=oj5aqbo1eulz apple-domain-verification=WmWqjjQdNTd8FLj1 status-page-domain-verification=y2kv019j5p4h docusign=a0f80b2b-cad3-42fb-bec6-e6abf458700f jamf-site-verification=YK2eaJK5WmX6OkUBJg-odw docker-verification=b6850f2c-29d1-4ef5-9e84-06517c63b5b7 axios-domain-verification-pzeb04=jH6MgIXTf5a6SQ4sZ3dORRFkI mongodb-site-verification=EGjovmxIH7GXJAXqy2EvL4YAZQYrNeE3 smartsheet-site-validation=ViznRSiRmJJYL_bUbM12TuSMi223D6i0 onetrust-domain-verification=305089a3e57b4f8087cf72e441a0c2c7 anthropic-domain-verification-2kamjp=ZZuMkVekozcvGxsCWJLdA1eAO google-site-verification=cNGL-u4aLQubC64AY7ijWgQfdQP37Uc0iNF0L9CU-6Q google-site-verification=nUmUWQAnvixEM-Lopr4DWotRA_VPJXL9YaCvt7e2odU google-site-verification=o76ulVr4EPgPrnnF_bbHT1OL-9awsJWyZ9fkXHOL_Ks google-site-verification=zIm-_CbdIdyLUQqG3LDYpyo--Hls4FaOjiJHmJ3-Jks parkable-domain-verification=81BB0RfEy-pskwMf66KW26gEo68UYrZ4uYPpJIiUgoI= 0ugFx1int1d0kBtTIwKeL+3TA/tpJDPOm6BIWTRhDwKq9sj2Lc1loQ4tH27Da1vtpI1HjBxX2eHtpmEO... access-domain-verification=991a9590d7b277fbfa4447d0a11a82014650d68747b1f81d75cd1... Dynatrace-site-verification=14970c01-b9a2-4fb0-baa4-3e55421d6198__hjigvhh8rdsjed... |
| 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.
Slow DNS adds latency to every page load. Consider a faster DNS provider.
DNS resolution is slow — anycast DNS providers (Cloudflare, Route 53) typically resolve <50ms globally.
Source: DNS performance benchmarks
ARedirect Chain1 redirect(s), 495 ms totalPASS
https://f5.com
224 ms · HTTP/1.1
https://www.f5.com/
271 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://f5.com | 301 | 224 ms | HTTP/1.1 | volt-adc |
| 2 | https://www.f5.com/ | 200 | 271 ms | HTTP/1.1 | volt-adc |
See the visual redirect chain in the HTTP Probe tab →
A+Crawlabilityrobots.txt present, sitemap with 11 URLsPASS
# *
User-agent: *
Allow: /
# Host
Host: https://www.f5.com
# Sitemaps
Sitemap: https://www.f5.com/sitemap.xml
Sitemap: https://www.f5.com/labs/sitemap.xml
- https://www.f5.com/tags-sitemap.xml
- https://www.f5.com/authors-sitemap.xml
- https://www.f5.com/company-sitemap.xml
- https://www.f5.com/case-studies-sitemap....
- https://www.f5.com/landing-pages-sitemap...
- https://www.f5.com/go-sitemap.xml
- https://www.f5.com/glossary-sitemap.xml
- https://www.f5.com/demos-sitemap.xml
- https://www.f5.com/octo-sitemap.xml
- https://www.f5.com/press-releases-sitema...
- https://www.f5.com/events-sitemap.xml
ADomain Intelligencef5.com — via CSC Corporate Domains, Inc., 30 years, 3 months old, hosted on F5, FRPASS
EXPIRED
May 30, 2026
235 days
Issued by Sectigo Limited
30 years, 3 months
Registered May 31, 1996
Not enabled
Protects against DNS spoofing
F5, FR
ASN AS35280
159.60.134.0
CSC Corporate Domains, Inc.
Expiry timeline
Recommended actions
- Domain has EXPIRED — renew immediately to avoid total site outage
- Enable DNSSEC to protect visitors from DNS spoofing
- Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Consider enabling auto-renewal to prevent accidental expiration.
Domain expiry approaching — renew immediately and ensure auto-renew + alerting are configured.
Source: ICANN renewal policy
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