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
BCrawlabilityrobots.txt present, sitemap with 0 URLsREVIEW
Search engines may not be able to parse the sitemap. Fix XML validation errors.
An unparseable sitemap is silently ignored by Google — the URLs it advertises are never queued for crawl.
Learn more ▾ ▴
Google's sitemap parser is strict about XML validity. A single unescaped `&` or unclosed tag invalidates the whole file. Run your sitemap through a validator (Search Console's Sitemaps report flags it) and fix the offending entry. Most generators escape correctly; mistakes usually come from manually-written entries.
Source: sitemaps.org / Google Search Central
An empty sitemap provides no value. Add <url> entries for your pages.
An empty sitemap signals 'no content to index' to Google — actively harmful versus having no sitemap at all.
Learn more ▾ ▴
Google compares URLs in the sitemap against URLs it has crawled. An empty sitemap on a site with thousands of pages signals abandonment. Either populate it correctly (most CMSes auto-generate) or delete the file and let Google crawl normally.
Source: Google Search Central / sitemaps.org
# See http://www.robotstxt.org/robotstxt.html for documentation on how to use the robots.txt file
User-agent: *
Sitemap: https://www.ecfr.gov/sitemaps/sitemap.xml.gz
Disallow: /search
Disallow: /recent-changes
Disallow: /on/
Disallow: /compare/
Disallow: /my/
Disallow: /auth/ofr
Disallow: /auth/sign_in
# Don't index developer tool links
Disallow: /api/renderer/v1/content/
Disallow: /api/versioner/v1/full/
BURL Variantswww/non-www, trailing slash, HTTP→HTTPSREVIEW
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
Consistent
BTLS Certificate Expiry & Recommendations156 days until leaf cert expires — 2 issues to addressREVIEW
Certificate validity
Recommended actions
- Submit your domain to hstspreload.org to be added to the Chrome preload list
- Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A+DNS Records2 A records, 33 ms lookupPASS
| A | 75.2.36.59, 99.83.174.136 |
| AAAA | — |
| CNAME | — |
| NS | ns1.ecfr.gov, ns2.ecfr.gov |
| MX | — |
| TXT | 7q2vv5cbhxyxb2ktymvrp6n1bwhjdwgf x7mlw82nqd2gmdb9fzh8m481tqhnlz95 SPF v=spf1 -all vv7jjnf86zl8ss6f6brx1zl125s52vwk |
| CAA | Lookup not available with standard resolver |
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), 634 ms totalPASS
https://ecfr.gov
306 ms · HTTP/1.1
https://www.ecfr.gov:443/
328 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://ecfr.gov | 301 | 306 ms | HTTP/1.1 | |
| 2 | https://www.ecfr.gov:443/ | 200 | 328 ms | HTTP/1.1 |
See the visual redirect chain in the HTTP Probe tab →
A+Domain Intelligenceecfr.gov — via get.gov, 14 years, 5 months old, hosted on AWSPASS
224 days
February 26, 2027
156 days
Issued by Amazon
14 years, 5 months
Registered January 10, 2012
Enabled
Protects against DNS spoofing
AWS
ASN AS16509
75.2.36.59
get.gov
Expiry timeline
Recommended actions
- 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