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 & Recommendations152 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 Records1 A records, 50 ms lookupPASS
| A | 185.150.184.223 |
| AAAA | — |
| CNAME | — |
| NS | auth02.dns.trueserver.nl, auth03.dns.trueserver.nl, auth01.dns.trueserver.nl |
| MX | 10 mail04.symbaloo.com 50 fallback.true.nl |
| TXT | zoho-verification=zb84222912.zmverify.zoho.eu SPF v=spf1 mx a ip4:87.233.242.240 ip4:87.233.165.0/24 include:user.zohobookings.eu ... google-site-verification=TZqlPPZaGfgOySrMd60rLJ23IEqgXO2f461qjUOAQR0 facebook-domain-verification=68snn4chhxvlgn95o6etjp1quj0f6f MS=ms20731405 OSSRH-52992 globalsign-domain-verification=XDGVJW6fNmLM6aP-zbHSMfVL66mt_vdumpIjQclEzW |
| 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.
ARedirect Chain1 redirect(s), 280 ms totalPASS
https://symbaloo.com
99 ms · HTTP/1.1
https://www.symbaloo.com/
181 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://symbaloo.com | 301 | 99 ms | HTTP/1.1 | |
| 2 | https://www.symbaloo.com/ | 200 | 181 ms | HTTP/1.1 |
See the visual redirect chain in the HTTP Probe tab →
A+Crawlabilityrobots.txt present, sitemap with 25 URLsPASS
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.
robots.txt omits Sitemap: directive — crawlers must fetch /sitemap.xml by convention; reliable but missing the explicit hint.
Source: sitemaps.org
User-agent: Baiduspider
Disallow: /
A+Domain Intelligencesymbaloo.com — via Hosting Concepts B.V. d/b/a Registrar.eu, 19 years, 6 months old, hosted on NL-NEFOS-AS, NLPASS
553 days
January 18, 2028
152 days
Issued by Sectigo Limited
19 years, 6 months
Registered January 18, 2007
Not enabled
Protects against DNS spoofing
NL-NEFOS-AS, NL
ASN AS202591
185.150.184.223
Hosting Concepts B.V. d/b/a Registrar.eu
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