Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.FRedirect ChainAction4 redirect(s), 1043 ms totalFIX
https://gmail.com
63 ms · HTTP/1.1
https://mail.google.com/mail/u/0/
207 ms · HTTP/1.1
https://accounts.google.com/ServiceLogin...
165 ms · HTTP/1.1
https://accounts.google.com/InteractiveL...
295 ms · HTTP/1.1
https://accounts.google.com/v3/signin/id...
313 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://gmail.com | 301 | 63 ms | HTTP/1.1 | sffe |
| 2 | https://mail.google.com/mail/u/0/ | 302 | 207 ms | HTTP/1.1 | ESF |
| 3 | https://accounts.google.com/ServiceLogin... | 302 | 165 ms | HTTP/1.1 | ESF |
| 4 | https://accounts.google.com/InteractiveL... | 302 | 295 ms | HTTP/1.1 | GSE |
| 5 | https://accounts.google.com/v3/signin/id... | 200 | 313 ms | HTTP/1.1 | ESF |
See the visual redirect chain in the HTTP Probe tab →
Each redirect adds latency. Try to minimize the chain to 1 hop.
Redirect chain — each hop adds latency; combine into one redirect where possible.
Source: Google Search Central / web.dev
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
DCDN & DeliveryActionNo CDN detectedFIX
Consider using a CDN to improve global delivery speed and reduce origin load.
BTLS Certificate Expiry & Recommendations66 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, 3 ms lookupPASS
| A | 172.217.29.69 |
| AAAA | 2800:3f0:4001:81a::2005 |
| CNAME | — |
| NS | ns4.google.com, ns2.google.com, ns3.google.com, ns1.google.com |
| MX | 5 gmail-smtp-in.l.google.com 10 alt1.gmail-smtp-in.l.google.com 20 alt2.gmail-smtp-in.l.google.com 30 alt3.gmail-smtp-in.l.google.com 40 alt4.gmail-smtp-in.l.google.com |
| TXT | yahoo-verification-key=dKYwfVbaxatmcXiXy6LDAxMRirqpOq5tj98iJv9qWVk= SPF v=spf1 redirect=_spf.google.com globalsign-smime-dv=CDYX+XFHUw2wml6/Gb8+59BsH31KzUr6c1l2BPvqKX8= |
| 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.
A+IPv6 ReadinessIPv6 reachable (2 ms)PASS
A+Crawlabilityrobots.txt present, sitemap with 166 URLsPASS
User-agent: *
Allow: /
Disallow: /a/*
Disallow: /mail?hl=*
Disallow: /tasks/*
Sitemap: https://www.google.com/gmail/sitemap.xml
A+URL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
www / non-www
Preferred variant: non-www
HTTP → HTTPS
Consistent
A+Domain Intelligencegmail.com — via MarkMonitor Inc., 31 years, 1 months oldPASS
EXPIRED
August 12, 2026
66 days
Issued by Google Trust Services
31 years, 1 months
Registered August 13, 1995
Not enabled
Protects against DNS spoofing
Unknown
2800:3f0:4001:847::2005
MarkMonitor 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
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