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https://loc.gov

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
92
GRADE
A
FIX
0
REVIEW
2
PASS
7
INFO
0
Probed from New York, United Stated
301 Moved Permanently
Checks
9
7 PASS 2 REVIEW
B
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
REVIEW
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
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

200https://www.loc.gov/
200https://loc.gov/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://loc.gov/ → https://loc.gov/

Consistent

B
TLS Certificate Expiry & Recommendations
86 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

86
days left
0d 30d 60d 90d+

Recommended actions

  • Extend HSTS max-age to at least 31536000 (1 year) to meet the preload list criteria
  • Add includeSubDomains to the HSTS directive
  • Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A+
DNS Records
2 A records, 7 ms lookup
PASS
2 A records, 7 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 104.17.6.58, 104.18.64.82
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2606:4700::6812:4052, 2606:4700::6811:63a
Info::
2 nameserver(s) configured
Got: alice.ns.cloudflare.com, kevin.ns.cloudflare.com
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: 7 ms
Got: 7 ms
A104.17.6.58, 104.18.64.82
AAAA2606:4700::6812:4052, 2606:4700::6811:63a
CNAME—
NSalice.ns.cloudflare.com, kevin.ns.cloudflare.com
MX
10 mxb-00026101.gslb.gpphosted.com
10 mxa-00026101.gslb.gpphosted.com
TXT
MS=ms90737861
ZA=NzrYbQCQ4geLYL//TYHmJA==
f05abc6d-1dc0-451c-91ba-e65ef91027a5
yTrNm8yrlLjz94UZ1A2UUPz7Gv5UfCIypoGH1HmXjNs=
538fe1481176c669d55eb1a37227bd0a3ccfb28d6a2838429e59f504dc3070d3
adobe-idp-site-verification=02f02861-90f5-4cf5-9922-c67c80a7bf26
webexdomainverification.NQCL=b1bef083-e011-4dcf-b1f7-42204b82128e
google-site-verification=D5cqNFQ7z5rT2z4OXeYRmxrMc80omDUqEGtsNFY9N_g
google-site-verification=o0tsBc2NuJSImRS3MromAcC8lwoaWNp5LFZlmJXB0-0
62QSYa/kfNXdxXnLjT9/ZOyvqed/KSL3dFy+b7K7EFS08xeEY8vGX0IT9BCOCvkgLa16BcrmaQhTgKeO...
SPF v=spf1 include:spf1.loc.gov include:spf2.loc.gov include:spf-00026101.gpphosted....
atlassian-domain-verification=nWInaz9qwixZxg4Ef5K7jmsSKDAlta15azD9kOFROWwn8xjciP...
CAALookup not available with standard resolver
Resolved in 7 ms

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
Redirect Chain
1 redirect(s), 82 ms total
PASS
1 redirect(s), 82 ms total
Info::
Single redirect
Got: https://loc.gov → https://www.loc.gov/ (301)
Info::
WWW normalization redirect

https://loc.gov

36 ms · HTTP/1.1

301

https://www.loc.gov/

46 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://loc.gov30136 msHTTP/1.1cloudflare
2https://www.loc.gov/20046 msHTTP/1.1cloudflare

See the visual redirect chain in the HTTP Probe tab →

A+
IPv6 Readiness
IPv6 reachable (1 ms)
PASS
IPv6 reachable (1 ms)
Info::
IPv6 is configured and reachable at 2606:4700::6812:4052, 2606:4700::6811:63a
Got: 1 ms connect
IPv6 Ready
AAAA Records 2606:4700::6812:4052, 2606:4700::6811:63a Connection Reachable (1 ms)
A+
Crawlability
robots.txt present, sitemap with 50 URLs
PASS
robots.txt present, sitemap with 50 URLs
Info::
robots.txt is present
Got: 482 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 50 entries
Info::
Sitemap index with 50 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 482 B Sitemaps referenced 1 User-agents 008, Baiduspider, Baiduspider-image, * Blocking No — crawling allowed

User-agent: 008
Disallow: /

#Baiduspider
User-agent: Baiduspider
Disallow: /

User-agent: Baiduspider-image
Disallow: /

User-agent: *
Disallow: /cgi-bin/
Disallow: /web_arch/
Disallow: /rr/mopic/staff
Disallow: /loc/volunteers
Disallow: /ficmanagers
Disallow: /preserv/extranet/
Disallow: /myloc
Disallow: /nationalfilmregistry
Disallow: /fedsearch
Disallow: /search
Disallow: /pictures/search
Disallow: /pictures/related
Crawl-Delay: 5

Sitemap: https://www.loc.gov/sitemap.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 50 entries Valid XML Yes
Child Sitemaps:
A
Domain Intelligence
loc.gov — via get.gov, 28 years, 11 months old
PASS
loc.gov — via get.gov, 28 years, 11 months old
Warning::
Domain expires in 81 days
Consider enabling auto-renewal to prevent accidental expiration.
Got: Expires Jul 7, 2026
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.
Domain expiry

EXPIRED

July 7, 2026

SSL certificate

86 days

Issued by Google Trust Services

Domain age

28 years, 11 months

Registered October 2, 1997

DNSSEC

Enabled

Protects against DNS spoofing

Hosting

Unknown

2606:4700::6811:63a

Registrar

get.gov

Unlocked 2 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Domain has EXPIRED — renew immediately to avoid total site outage
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar get.gov
Created October 2, 1997 (28 years, 11 months ago)
Expires July 7, 2026 (2 months)
Last Updated July 12, 2025
Name Servers alice.ns.cloudflare.com, kevin.ns.cloudflare.com
DNSSEC Enabled
Registrant REDACTED FOR PRIVACY
Hosting
IP Address 2606:4700::6811:63a
Data source: rdap (0.2s)

Consider enabling auto-renewal to prevent accidental expiration.

Why this matters

Domain expiry approaching — renew immediately and ensure auto-renew + alerting are configured.

Source: ICANN renewal policy

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 49 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.
2 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
9 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
49 ms
Total Time Total request time from DNS lookup through full response.
49 ms

Connection waterfall

DNS Lookup 3 ms TCP Connect 2 ms TLS Handshake 9 ms Server Processing 35 ms Content Transfer 0 ms
A+
CDN & Delivery
Cloudflare (HIT)
PASS
Cloudflare (HIT)
Info::
Site is served via Cloudflare CDN (edge: EWR)
Got: cf-ray: 9ed505f0787e0c23-EWR
Info::
CDN cache status: HIT
CDN Detected: Cloudflare
Provider Cloudflare Cache Status HIT Evidence cf-ray: 9ed505f0787e0c23-EWR
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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