Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.DRedirect ChainAction2 redirect(s), 1565 ms totalFIX
https://lbl.gov
1267 ms · HTTP/1.0
http://www.lbl.gov/
83 ms · HTTP/1.1
https://www.lbl.gov/
214 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://lbl.gov | 301 | 1267 ms | HTTP/1.0 | BigIP |
| 2 | http://www.lbl.gov/ | 301 | 83 ms | HTTP/1.1 | cloudflare |
| 3 | https://www.lbl.gov/ | 200 | 214 ms | HTTP/1.1 | cloudflare |
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
Redirect directly from https://lbl.gov to https://www.lbl.gov/
Redirect chain could be flattened to one hop — server config tweak removes intermediate latency.
Source: web.dev
DURL VariantsActionwww/non-www, trailing slash, HTTP→HTTPSFIX
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
HTTP version does not redirect to HTTPS
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
BTLS Certificate Expiry & Recommendations270 days until leaf cert expires — 3 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 OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
ADNS Records1 A records, 417 ms lookupPASS
| A | 131.243.228.58 |
| AAAA | — |
| CNAME | — |
| NS | adns.lbl.gov, adns1.es.net, adns2.es.net |
| MX | 1 aspmx.l.google.com 5 alt1.aspmx.l.google.com 5 alt2.aspmx.l.google.com 10 alt4.aspmx.l.google.com 10 alt3.aspmx.l.google.com |
| TXT | qa1mnrllgnbfii00rdk66vjvm2 c3c383f2-a153-4617-9717-54e564cb59e0 ca3-7d1dfaea22424670b66fd99306419327 docusign=0f6bb425-7a31-4e68-82be-fbd457f31774 docusign=1eee3cad-4748-4aaf-9ed7-b2605c9483cc canva-site-verification=mgUHPJc6r0NE6Q4prE9zpQ openai-domain-verification=dv-sfvJakqc0pd21hOhaJqnqUTd anthropic-domain-verification-h102fx=00CIodRx8WUfix92z4OI6tLwt logmein-verification-code=b89f15f9-74de-42e6-beba-fc61fb213ff5 google-site-verification=2dpiQJ9xZceLN1pILOitQbB163hcYnJhaK7I3y8BJ-8 google-site-verification=GhY8O8foCyslsuOSh5VOpyIt6kp9gaZF_6X2WbtVQVI google-site-verification=vRtEcyl-bcyq9LlAx-IKqgI_Uw5H4I_Fn0bIxGQwWek pardot1008322=a85fde4e241411eab5a95741a5485759066251b9421d2aa2a4fbf634872dbed4 box-domain-verification=c15c129b49edfeda4f2998f51ab86512161af5251e765e73f8c312e8... atlassian-domain-verification=9IP0nkgLSi6HnSykGR9L6B4/iYnroZIv6KiAGQZfcNV5YAZOLa... atlassian-domain-verification=PZUpopCxEiaiTq0EmOJiF1oCvepxHULA64xstX0NEVv2Yx7HgF... SPF v=spf1 include:spfint.lbl.gov ip6:2001:400:310::/64 ip4:198.124.252.166 ip4:198.... |
| 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
A+Crawlabilityrobots.txt present, sitemap with 1 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: *
Disallow: /wp-admin/
Disallow: /wp-login.php
A+Domain Intelligencelbl.gov — via get.gov, 28 years, 11 months old, hosted on LBL - Lawrence Berkeley National Laboratory, USPASS
74 days
August 28, 2026
270 days
Issued by Internet2
28 years, 11 months
Registered October 2, 1997
Enabled
Protects against DNS spoofing
LBL - Lawrence Berkeley National Laboratory, US
ASN AS16
131.243.228.58
get.gov
Expiry timeline
Recommended actions
- Renew the domain or enable auto-renewal to prevent accidental expiry
- Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
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