🌐 loc.gov 200 🔒 SSL Valid
Checked: just now 🔗 Visit site
HTTP Status ?A three-digit code showing if the site loaded successfully (200), redirects (301/302), or has errors (4xx/5xx).Read more →
200
SSL Expires ?When the SSL certificate expires. An expired certificate causes browser security warnings.Read more →
in 87d
Domain Expires ?When the domain registration expires. If not renewed, the domain becomes available to others.Read more →
N/A
Hosting ?The company and location where this website's server is physically located.Read more →
Unknown
Security ?Score based on key HTTP security headers: HSTS, Content-Security-Policy, and X-Frame-Options.Read more →
3/3
IP Address ?The numerical address of the server hosting this website. Reveals location, provider, and network.Read more →
104.18.64.82
Performance ?Lighthouse performance score from Google PageSpeed Insights (0–100). Measures real-world loading speed, interactivity and visual stability.
N/A
Uptime
N/A
⚡ Performance ?Lighthouse performance score from Google PageSpeed Insights (0–100). Measures real-world loading speed, interactivity and visual stability.
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Performance data not available yet.

🛠️ Tech Stack ?Technologies detected on this website: CMS, frameworks, libraries, CDN, and analytics tools. 3
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🌐 CDN
Cloudflare
🔤 Font/Icon
Font Awesome
📦 JS Library
jQuery 1.8.2.
📸 Screenshot Processing...
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Screenshot is being captured...

🌐 DNS Records ?DNS translates domain names to IP addresses. Records control where the site, email, and services are directed.Read more →
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A (IPv4)104.18.64.82104.17.6.58
AAAA (IPv6)2606:4700::6811:63a2606:4700::6812:4052
NSalice.ns.cloudflare.comkevin.ns.cloudflare.com
MX10 mxb-00026101.gslb.gpphosted.com10 mxa-00026101.gslb.gpphosted.com
TXT (14)
Services configured via TXT:
Google3 Adobe Atlassian Microsoft 365 OpenAI
+6 other TXT record(s)
Show all TXT records
62QSYa/kfNXdxXnLjT9/ZOyvqed/KSL3dFy+b7K7EFS08xeEY8vGX0IT9BCOCvkgLa16BcrmaQhTgKeOMK6njA==
MS=ms90737861
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adobe-idp-site-verification=02f02861-90f5-4cf5-9922-c67c80a7bf26
atlassian-domain-verification=nWInaz9qwixZxg4Ef5K7jmsSKDAlta15azD9kOFROWwn8xjciPtK3MK4SUFB1R1/
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google-site-verification=60lAEjrt1Mhjzxp92lROrlGsYFR9alVBZVncUMaus7Q
google-site-verification=D5cqNFQ7z5rT2z4OXeYRmxrMc80omDUqEGtsNFY9N_g
google-site-verification=o0tsBc2NuJSImRS3MromAcC8lwoaWNp5LFZlmJXB0-0
openai-domain-verification=dv-30BwSHGyfCP4Av8FZs9IAyOJ
v=spf1 include:spf1.loc.gov include:spf2.loc.gov include:spf-00026101.gpphosted.com mx -all
webexdomainverification.NQCL=b1bef083-e011-4dcf-b1f7-42204b82128e
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📋 WHOIS / RDAP ?Public registration data: who registered the domain, when, and when it expires.Read more →
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RegistrarN/A
RegisteredN/A
ExpiresN/A
Last UpdatedN/A
🔒 SSL Certificate ?Encrypts the connection between browsers and this website. Valid SSL = HTTPS works.Read more → Valid
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Subject (CN)loc.gov
IssuerGoogle Trust Services
Valid From2026-10-17
Valid Until2027-01-15 (87 days left)
SANs (4)loc.gov*.loc.gov*.nlsbard.loc.gov*.bard-staging.loc.gov
📡 HTTP Headers ?Metadata sent by the server: reveals software, caching rules, and security configuration.Read more →
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Status200
Servercloudflare
Content-Typetext/html
Final URLhttps://www.loc.gov/
strict-transport-securitymax-age=3600; preload
content-security-policyblock-all-mixed-content; default-src https://loc.gov/ https://*.loc.gov/ ; media-src https://loc.gov/ https://*.loc.gov/ https://*.readspeaker.com/ https://*.arcgis.com/ https://*.arcgisonline.com/ https://webapps-cdn.esri.com/ blob:; worker-src https://loc.gov/ https://*.loc.gov/ blob:; font-src https://loc.gov/ https://*.loc.gov/ https://*.arcgis.com/ https://*.arcgisonline.com/ https://webapps-cdn.esri.com/ https://ssl.p.jwpcdn.com/ data:; img-src https://loc.gov/ https://*.loc.gov/ https://congress.gov/ https://*.congress.gov/ https://*.readspeaker.com/ https://*.arcgis.com/ https://*.arcgisonline.com/ https://webapps-cdn.esri.com/ https://*.ssa.gov/ https://dpm.demdex.net/ https://cm.everesttech.net/ https://*.amazonaws.com data: blob:; connect-src https://loc.gov/ https://*.loc.gov/ https://*.arcgis.com/ https://*.arcgisonline.com/ https://webapps-cdn.esri.com/ https://chat-us.libanswers.com/ https://thelibraryofcongress.tt.omtrdc.net/ https://dpm.demdex.net/ https://d3c605m4lmznjl.cloudfront.net/ https://*.s3.us-east-1.amazonaws.com/; style-src https://loc.gov/ https://*.loc.gov/ https://*.readspeaker.com/ https://*.arcgis.com/ https://*.arcgisonline.com/ https://webapps-cdn.esri.com/ https://ssl.p.jwpcdn.com/ https://assets.adobedtm.com/ https://*.ssa.gov/ 'unsafe-inline' blob:; script-src https://loc.gov/ https://*.loc.gov/ https://*.readspeaker.com/ https://*.arcgis.com/ https://*.arcgisonline.com/ https://webapps-cdn.esri.com/ https://cdn.jsdelivr.net https://ssl.p.jwpcdn.com/ https://assets.adobedtm.com/ https://*.blackbaudcdn.net/ https://*.blackbaud.com/ https://ajax.googleapis.com/ajax/libs/jquery/ https://*.ssa.gov/ https://s.ytimg.com/ 'unsafe-inline' 'unsafe-eval'; frame-src https://loc.gov/ https://*.loc.gov/ https://*.readspeaker.com/ https://*.blackbaudcdn.net/ https://*.blackbaud.com/ https://www.nlstalkingbooks.org/ https://unitedstateslibraryofcongress.demdex.net https://www.youtube-nocookie.com/; frame-ancestors https://loc.gov/ https://*.loc.gov/ https://*.blackbaudcdn.net/ https://*.blackbaud.com/ https://loc.libwizard.com/; report-uri https://errorlogging.loc.gov/api/51/security/?sentry_key=2176ae0b9acd4cd59297edc0e064cc95&sentry_environment=production ;
x-frame-optionssameorigin
x-content-type-optionsnosniff
referrer-policyno-referrer-when-downgrade
cache-controlno-transform, max-age=3600
cf-raya4cfec3b6a830a90-IAD
Security headers ?HTTP headers that protect visitors from attacks. HSTS forces HTTPS, CSP controls resource loading, X-Frame-Options prevents clickjacking.Read more →
HSTS
Content-Security-Policy
X-Frame-Options
🏠 Hosting ?Physical infrastructure: where the server is, who operates it, and what network it belongs to.Read more →
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IP Address104.18.64.82
ProviderUnknown
OrganizationN/A
ASNN/A
LocationN/A
🛡️ Security Score A (6/7)
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Valid SSL
HSTS
CSP
X-Frame-Options
X-Content-Type
Referrer-Policy
Permissions-Policy
🗺️ Sitemap & Robots
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Partially restricted
Some areas are hidden from crawlers, but the main content stays open to search engines.
Areas hidden from crawlers:
🚫 Entire site 1 🔍 Search & filters 2 📁 Other paths 10
⏱️ Crawl delay: 5s
Show raw disallow rules (13)
/
/cgi-bin/
/web_arch/
/rr/mopic/staff
/loc/volunteers
/ficmanagers
/preserv/extranet/
/myloc
/nationalfilmregistry
/fedsearch
/search
/pictures/search
/pictures/related
Sitemap Found 49 sitemaps (index) pages
🔗 Social & Meta Tags Complete
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TitleHome | Library of Congress
DescriptionThe world's largest library. View historic photos, maps, books and more. Contact experts for help with research. Plan a visit. Home of U.S. Copyright Office.
OG TitleHome | Library of Congress
OG DescriptionThe world's largest library. View historic photos, maps, books and more. Contact experts for help with research. Plan a visit. Home of U.S. Copyright Office.
OG Imagehttp://www.loc.gov/static/images/favicons/open-graph-logo.png
OG preview
OG Typearticle
OG Site NameThe Library of Congress
Languageen
📧 Mail Security ?Email authentication records (SPF & DMARC) that prevent spoofing and phishing from this domain.Read more →
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SPF✓ Present
v=spf1 include:spf1.loc.gov include:spf2.loc.gov include:spf-00026101.gpphosted.com mx -all
DMARC✓ Present
v=DMARC1;p=none;sp=none;fo=1;rua=mailto:[email protected];ruf=mailto:[email protected];rf=afrf;pct=100
MX Records
10 → mxb-00026101.gslb.gpphosted.com
10 → mxa-00026101.gslb.gpphosted.com
🌍 Other TLDs ?Other top-level domain variants of this domain name and their availability. 22 active 2 for sale
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.org ●
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.me ●
.biz taken
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.xyz taken
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.de ●
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.fr ●
.nl ●
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.ca ●
.com.au ●
.co.uk ●
📡 Uptime Monitor
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Not checked yet — data will appear after the first monitoring run.