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Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
79
GRADE
C
FIX
2
REVIEW
3
PASS
4
INFO
0
Probed from Singapore, Singapore
301 Moved Permanently
Checks
9
4 PASS 3 REVIEW 2 FIX
D
URL Variants
Action
www/non-www, trailing slash, HTTP→HTTPS
FIX
www/non-www, trailing slash, HTTP→HTTPS
Critical::
Both www and non-www versions serve content
Got: Both variants return 200 Expected: One variant 301-redirects to the other
Critical::
HTTP version does not redirect to HTTPS
Got: HTTP 0 Expected: 301 redirect to HTTPS

www / non-www

200https://www.eia.gov/
200https://eia.gov/

Inconsistent — duplicate content risk

HTTP → HTTPS

http://eia.gov/

HTTP version does not redirect to HTTPS

D
CDN & Delivery
Action
No CDN detected
FIX
No CDN detected
Warning::
No CDN detected
A CDN can significantly improve load times for users around the world by caching content at edge nodes closer to them.
No CDN detected

Consider using a CDN to improve global delivery speed and reduce origin load.

B
Redirect Chain
1 redirect(s), 1025 ms total
REVIEW
1 redirect(s), 1025 ms total
Info::
Single redirect
Got: https://eia.gov → https://www.eia.gov:443/ (301)
Info::
WWW normalization redirect
Warning::
Redirect overhead: 1025 ms total
Got: 1025 ms

https://eia.gov

738 ms · HTTP/1.1

301

https://www.eia.gov:443/

287 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://eia.gov301738 msHTTP/1.1awselb/2.0
2https://www.eia.gov:443/200287 msHTTP/1.1Microsoft-IIS/10.0

See the visual redirect chain in the HTTP Probe tab →

C
IPv6 Readiness
Action
No IPv6 support
REVIEW
No IPv6 support
Info::
No IPv6 (AAAA) records found
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No IPv6 Support
About 40% of internet users have IPv6. Consider adding AAAA records.

IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.

Why this matters

No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.

Source: Google IPv6 stats

B
TLS Certificate Expiry & Recommendations
139 days until leaf cert expires — 2 issues to address
REVIEW

Certificate validity

139
days left
0d 30d 60d 90d+

Recommended actions

  • 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
A+
DNS Records
1 A records, 5 ms lookup
PASS
1 A records, 5 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 205.254.131.126
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
No IPv6 (AAAA) records
Info::
3 nameserver(s) configured
Got: blue.foundationdns.com, blue.foundationdns.net, blue.foundationdns.org
Info::
2 mail exchanger(s) configured
Info::
CAA records not checked
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Info::
SPF record present in TXT
Info::
DNS resolution time: 5 ms
Got: 5 ms
A205.254.131.126
AAAA—
CNAME—
NSblue.foundationdns.com, blue.foundationdns.net, blue.foundationdns.org
MX
10 mxa-002bc302.gslb.gpphosted.com
10 mxb-002bc302.gslb.gpphosted.com
TXT
domain-verification=Mlutav2FPvMxAld2NpE3sNAtqm-1pXxtowKXglOUtqw
webexdomainverification.MY29=efa5c2f0-dcc2-4a8b-a3f0-1efbe1146cd9
google-site-verification=G4ea15TyWQOzvot9s5cpz98yOSvIERR76zibXIaOXX0
google-site-verification=gAUG5SK1GPTyq1kG98Gp8XCrTh5MKxXbj_Jlp5Dlp3A
JY+0iWejZTbeXsvvxesFdi5dGxV0yvH96zh1tQi48oyp3EdI0wvNwZDG1NNAVEPkv34j44Tqoa2n/pdE...
adobe-idp-site-verification=51c47542af4a9775bbb483118119a96ad1d4ff6c30d089fd7aad...
SPF v=spf1 include:_spf.doe.gov include:spf.protection.outlook.com include:spf.const...
CAALookup not available with standard resolver
Resolved in 5 ms

Multiple A records provide failover if one server goes down.

Why this matters

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.

Why this matters

Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.

A+
Crawlability
robots.txt present, sitemap with 133 URLs
PASS
robots.txt present, sitemap with 133 URLs
Info::
robots.txt is present
Got: 718 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 133 entries
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 718 B Sitemaps referenced 1 User-agents * Blocking No — crawling allowed
User-agent: *

Allow: /


Disallow: /_*/

Disallow: /archive/

Disallow: /*archive/

Disallow: /archive*/

Disallow: /beta/

Allow: /beta/international/

Disallow: /cfapps/

Disallow: /CFIDE/

Disallow: /CFusionMX7/

Disallow: /coal/annual/images/

Disallow: /coal/images/

Disallow: /dailyrpt

Disallow: /global/

Disallow: /images_old/

Disallow: /maintenance/

Disallow: /naturalgas/weekly/archivenew_ngwu

# Disallow: /naturalgas/weekly/includes/archive.php

Disallow: /oil_gas/

Disallow: /oit/

Disallow: /reports/

Allow: /reports/upcoming.php

Disallow: /rss

Disallow: /scripts

Disallow: /state/maps/Pipelines/

Disallow: /styles

Disallow: /survey

Disallow: /w3c/

Sitemap: https://www.eia.gov/sitemap.xml
sitemap.xml 200 OK
Type URL Set URLs 133 entries Valid XML Yes
Sample URLs:
A+
Domain Intelligence
eia.gov — via get.gov, 16 years, 9 months old, hosted on DOE-HQ - U.S. Department of Energy, US
PASS
eia.gov — via get.gov, 16 years, 9 months old, hosted on DOE-HQ - U.S. Department of Energy, US
Info::
Domain registered until Aug 26, 2026 (4 months remaining)
Info::
DNSSEC is enabled
Info::
Registrar: get.gov
Warning::
Registrar lock is NOT enabled
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.
Info::
Hosting: DOE-HQ - U.S. Department of Energy, US
Got: AS32982
Domain expiry

9 days

August 26, 2026

SSL certificate

139 days

Issued by Amazon

Domain age

16 years, 9 months

Registered October 8, 2009

DNSSEC

Enabled

Protects against DNS spoofing

Hosting

DOE-HQ - U.S. Department of Energy, US

ASN AS32982

205.254.131.126

Registrar

get.gov

Unlocked 3 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Renew the domain or enable auto-renewal to prevent accidental expiry
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar get.gov
Created October 8, 2009 (16 years, 9 months ago)
Expires August 26, 2026 (4 months)
Last Updated March 1, 2026
Name Servers blue.foundationdns.com, blue.foundationdns.net, blue.foundationdns.org
DNSSEC Enabled
Registrant REDACTED FOR PRIVACY
Hosting
IP Address 205.254.131.126
ASN AS32982 (DOE-HQ - U.S. Department of Energy, US)
Provider DOE-HQ - U.S. Department of Energy, US
Data source: rdap (0.9s)

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.

Why this matters

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

A
HTTP Probe Timing
Total 790 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
3 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
264 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
266 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
791 ms
Total Time Total request time from DNS lookup through full response.
791 ms

Connection waterfall

DNS Lookup 3 ms TCP Connect 264 ms TLS Handshake 266 ms Server Processing 258 ms Content Transfer 0 ms
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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