{"list":"no-hsts","title":".gov domains without HSTS","control":"HTTP Strict Transport Security header","predicate":"no_hsts","means":"The HTTPS response carried no Strict-Transport-Security header, so a first visit can still be downgraded to plain HTTP.","note":null,"buyers":"Security teams, MSPs and hosting or CDN vendors serving government sites.","obligation":"HTTPS and HSTS on federal websites (OMB M-15-13)","census":"government-web-census-2026-09","date":"2026-09-30","host":"gov.agentexchange.work","kind":"gov","population":16783,"reachable":13060,"count":8322,"share_of_population_pct":49.6,"by_state":{"MD":82,"VA":138,"DC":84,"MO":152,"ID":39,"IL":229,"NJ":187,"MS":48,"CO":122,"NC":192,"KS":110,"OH":336,"TN":174,"AK":27,"AL":122,"AR":135,"AS":1,"AZ":136,"UT":211,"MA":234,"CT":107,"SC":69,"FL":262,"MT":66,"WV":76,"ME":69,"DE":15,"TX":342,"WA":133,"GA":191,"GU":1,"IA":90,"IN":61,"KY":122,"LA":54,"MI":399,"WI":490,"MN":329,"OR":123,"ND":18,"NE":68,"NV":28,"NM":61,"NY":842,"OK":101,"PA":196,"RI":32,"CA":425,"SD":31,"VT":54,"VI":5,"NH":119,"WY":40,"HI":2,"PR":1},"state_label":"State","page":"https://gov.agentexchange.work/leads/no-hsts","feed":"https://gov.agentexchange.work/leads/no-hsts.xml","source":"CISA dotgov-data current-full.csv (all registered .gov domains)","license":"CC BY 4.0","free":true,"top":[{"domain":"9-11commission.gov","name":"National Archives and Records Administration","type":"Federal - Executive","city":"College Park","state":"MD","reachable":true,"http_only":false,"https_status":200,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":"partly blocked","robots_chatgpt_user":"partly blocked","robots_claude_user":"partly blocked","llms_txt":false,"title":"National Commission on Terrorist Attacks Upon the United States"},{"domain":"911commission.gov","name":"National Archives and Records Administration","type":"Federal - Executive","city":"College Park","state":"MD","reachable":true,"http_only":false,"https_status":200,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":"partly blocked","robots_chatgpt_user":"partly blocked","robots_claude_user":"partly blocked","llms_txt":false,"title":"National Commission on Terrorist Attacks Upon the United States"},{"domain":"988.gov","name":"Department of Health and Human Services","type":"Federal - Executive","city":"Rockville","state":"MD","reachable":true,"http_only":false,"https_status":200,"final_host":"988lifeline.org","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":"partly blocked","robots_chatgpt_user":"partly blocked","robots_claude_user":"partly blocked","llms_txt":false,"title":"988 Lifeline - If you need emotional support, reach out to the national mental health hotl"},{"domain":"abmc.gov","name":"American Battle Monuments Commission","type":"Federal - Executive","city":"Arlington","state":"VA","reachable":true,"http_only":false,"https_status":403,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"Azure WAF"},{"domain":"acf.gov","name":"Department of Health and Human Services","type":"Federal - Executive","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":202,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":""},{"domain":"achp.gov","name":"Advisory Council on Historic Preservation","type":"Federal - Executive","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":200,"final_host":"","hsts":false,"security_txt":"none","privacy_link":true,"accessibility_link":false,"robots_gptbot":"partly blocked","robots_chatgpt_user":"partly blocked","robots_claude_user":"partly blocked","llms_txt":false,"title":"| Advisory Council on Historic Preservation"},{"domain":"acl.gov","name":"Department of Health and Human Services","type":"Federal - Executive","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":200,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":true,"robots_gptbot":"partly blocked","robots_chatgpt_user":"partly blocked","robots_claude_user":"partly blocked","llms_txt":false,"title":"Home Page | ACL Administration for Community Living"},{"domain":"acus.gov","name":"Administrative Conference of the United States","type":"Federal - Executive","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":403,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"403 Forbidden"},{"domain":"africanamericanhistorymonth.gov","name":"Library of Congress","type":"Federal - Legislative","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":200,"final_host":"www.blackhistorymonth.gov","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"Black History Month 2026"},{"domain":"ahcpr.gov","name":"Department of Health and Human Services","type":"Federal - Executive","city":"Rockville","state":"MD","reachable":true,"http_only":false,"https_status":403,"final_host":"www.ahrq.gov","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":"blocked","robots_chatgpt_user":"blocked","robots_claude_user":"partly blocked","llms_txt":false,"title":"ERROR: The request could not be satisfied"},{"domain":"ahrq.gov","name":"Department of Health and Human Services","type":"Federal - Executive","city":"Rockville","state":"MD","reachable":true,"http_only":false,"https_status":403,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":"blocked","robots_chatgpt_user":"blocked","robots_claude_user":"partly blocked","llms_txt":false,"title":"ERROR: The request could not be satisfied"},{"domain":"america250.gov","name":"U.S. Semiquincentennial Commission","type":"Federal - Legislative","city":"Alexandria","state":"VA","reachable":true,"http_only":false,"https_status":403,"final_host":"america250.org","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":"allowed","robots_chatgpt_user":"allowed","robots_claude_user":"allowed","llms_txt":false,"title":"Just a moment..."},{"domain":"americaslibrary.gov","name":"Library of Congress","type":"Federal - Legislative","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":403,"final_host":"www.loc.gov","hsts":false,"security_txt":"incomplete","privacy_link":false,"accessibility_link":false,"robots_gptbot":"partly blocked","robots_chatgpt_user":"partly blocked","robots_claude_user":"partly blocked","llms_txt":false,"title":"Just a moment..."},{"domain":"americorps.gov","name":"Corporation for National and Community Service","type":"Federal - Executive","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":403,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"Azure WAF"},{"domain":"aoa.gov","name":"Department of Health and Human Services","type":"Federal - Executive","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":200,"final_host":"acl.gov","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":true,"robots_gptbot":"partly blocked","robots_chatgpt_user":"partly blocked","robots_claude_user":"partly blocked","llms_txt":false,"title":"Administration on Aging | ACL Administration for Community Living"},{"domain":"asc.gov","name":"Appraisal Subcommittee of the Federal Financial Institutions Examination Council","type":"Federal - Executive","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":200,"final_host":"","hsts":false,"security_txt":"none","privacy_link":true,"accessibility_link":false,"robots_gptbot":"blocked","robots_chatgpt_user":"partly blocked","robots_claude_user":"partly blocked","llms_txt":false,"title":"Appraisal Subcommittee | ASC gov"},{"domain":"asianpacificheritage.gov","name":"Library of Congress","type":"Federal - Legislative","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":200,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"Asian & Pacific American Heritage Month"},{"domain":"aviationweather.gov","name":"Department of Commerce","type":"Federal - Executive","city":"Silver Spring","state":"MD","reachable":true,"http_only":false,"https_status":200,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"Aviation Weather Center"},{"domain":"blackhistorymonth.gov","name":"Library of Congress","type":"Federal - Legislative","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":200,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"Black History Month 2026"},{"domain":"childwelfare.gov","name":"Department of Health and Human Services","type":"Federal - Executive","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":200,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":"allowed","robots_chatgpt_user":"allowed","robots_claude_user":"allowed","llms_txt":false,"title":""},{"domain":"climate.gov","name":"Department of Commerce","type":"Federal - Executive","city":"Silver Spring","state":"MD","reachable":true,"http_only":false,"https_status":403,"final_host":"www.noaa.gov","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"ERROR: The request could not be satisfied"},{"domain":"coil.gov","name":"Open World Leadership Center","type":"Federal - Legislative","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":400,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"Invalid URL"},{"domain":"commerce.gov","name":"Department of Commerce","type":"Federal - Executive","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":403,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"Just a moment..."},{"domain":"compliance.gov","name":"Office of Congressional Workplace Rights","type":"Federal - Legislative","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":200,"final_host":"www.ocwr.gov","hsts":false,"security_txt":"none","privacy_link":true,"accessibility_link":true,"robots_gptbot":"allowed","robots_chatgpt_user":"allowed","robots_claude_user":"allowed","llms_txt":false,"title":"OCWR - Homepage"},{"domain":"congress.gov","name":"Library of Congress","type":"Federal - Legislative","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":403,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":"blocked","robots_chatgpt_user":"blocked","robots_claude_user":"blocked","llms_txt":false,"title":"Just a moment..."},{"domain":"connect.gov","name":"Department of Agriculture","type":"Federal - Executive","city":"Kansas City","state":"MO","reachable":true,"http_only":false,"https_status":200,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"Connect.gov"},{"domain":"cttso.gov","name":"Department of Defense","type":"Federal - Executive","city":"Fort Meade","state":"MD","reachable":true,"http_only":false,"https_status":522,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":""},{"domain":"currencyreader.gov","name":"Library of Congress","type":"Federal - Legislative","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":403,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"Just a moment..."},{"domain":"currencyreaderapplication.gov","name":"Library of Congress","type":"Federal - Legislative","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":403,"final_host":"currencyreader.gov","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"Just a moment..."},{"domain":"dataprivacyframework.gov","name":"Department of Commerce","type":"Federal - Executive","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":200,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":"allowed","robots_chatgpt_user":"allowed","robots_claude_user":"allowed","llms_txt":false,"title":"Data Privacy Framework"},{"domain":"digitalpreservation.gov","name":"Library of Congress","type":"Federal - Legislative","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":200,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"Digital Preservation (Library of Congress)"},{"domain":"digitizationguidelines.gov","name":"Library of Congress","type":"Federal - Legislative","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":200,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"Federal Agencies Digital Guidelines Initiative"},{"domain":"dni.gov","name":"Office of the Director of National Intelligence","type":"Federal - Executive","city":"McLean","state":"VA","reachable":true,"http_only":false,"https_status":200,"final_host":"www.odni.gov","hsts":false,"security_txt":"none","privacy_link":true,"accessibility_link":false,"robots_gptbot":"partly blocked","robots_chatgpt_user":"partly blocked","robots_claude_user":"partly blocked","llms_txt":false,"title":"Office of the Director of National Intelligence"},{"domain":"doc.gov","name":"Department of Commerce","type":"Federal - Executive","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":403,"final_host":"www.commerce.gov","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"Just a moment..."},{"domain":"eac.gov","name":"Election Assistance Commission","type":"Federal - Executive","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":200,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":true,"robots_gptbot":"partly blocked","robots_chatgpt_user":"partly blocked","robots_claude_user":"partly blocked","llms_txt":false,"title":"Home | U.S. Election Assistance Commission"},{"domain":"ed.gov","name":"Department of Education","type":"Federal - Executive","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":403,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"Azure WAF"},{"domain":"eda.gov","name":"Department of Commerce","type":"Federal - Executive","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":403,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"Just a moment..."},{"domain":"everykidoutdoors.gov","name":"Department of the Interior","type":"Federal - Executive","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":200,"final_host":"","hsts":false,"security_txt":"none","privacy_link":true,"accessibility_link":true,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"Every Kid Outdoors"},{"domain":"faa.gov","name":"Department of Transportation","type":"Federal - Executive","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":403,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"Access Denied"},{"domain":"ferc.gov","name":"Federal Energy Regulatory Commission","type":"Federal - Executive","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":403,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":"partly blocked","robots_chatgpt_user":"partly blocked","robots_claude_user":"partly blocked","llms_txt":false,"title":"Just a moment..."},{"domain":"firescience.gov","name":"Department of the Interior","type":"Federal - Executive","city":"Boise","state":"ID","reachable":true,"http_only":false,"https_status":404,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":""},{"domain":"firstnet.gov","name":"Department of Commerce","type":"Federal - Executive","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":200,"final_host":"","hsts":false,"security_txt":"none","privacy_link":true,"accessibility_link":true,"robots_gptbot":"partly blocked","robots_chatgpt_user":"partly blocked","robots_claude_user":"partly blocked","llms_txt":false,"title":"FirstNet Authority | First Responder Network Authority"},{"domain":"fnal.gov","name":"Department of Energy","type":"Federal - Executive","city":"Batavia","state":"IL","reachable":true,"http_only":false,"https_status":403,"final_host":"","hsts":false,"security_txt":"complete","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"Just a moment..."},{"domain":"gaoinnovations.gov","name":"Government Accountability Office","type":"Federal - Legislative","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":403,"final_host":"innovations.gao.gov","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"ERROR: The request could not be satisfied"},{"domain":"getactive.gov","name":"Department of Health and Human Services","type":"Federal - Executive","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":403,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"Access Denied"},{"domain":"go.gov","name":"General Services Administration","type":"Federal - Executive","city":"Washington","state":"DC","reachable":true,"http_only":false,"https_status":200,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":true,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"GO.gov"},{"domain":"goldwaterscholarship.gov","name":"Barry Goldwater Scholarship and Excellence in Education Foundation","type":"Federal - Executive","city":"Front Royal","state":"VA","reachable":true,"http_only":false,"https_status":200,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":"partly blocked","robots_chatgpt_user":"partly blocked","robots_claude_user":"partly blocked","llms_txt":false,"title":"Barry Goldwater Scholarship &amp; Excellence in Education Foundation"},{"domain":"grants.gov","name":"Department of Health and Human Services","type":"Federal - Executive","city":"Office of the Secretary\"","state":"Washington","reachable":true,"http_only":false,"https_status":200,"final_host":"","hsts":false,"security_txt":"none","privacy_link":true,"accessibility_link":true,"robots_gptbot":"allowed","robots_chatgpt_user":"allowed","robots_claude_user":"allowed","llms_txt":false,"title":"Home | Grants.gov"},{"domain":"guideline.gov","name":"Department of Health and Human Services","type":"Federal - Executive","city":"Rockville","state":"MD","reachable":true,"http_only":false,"https_status":403,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"ERROR: The request could not be satisfied"},{"domain":"guidelines.gov","name":"Department of Health and Human Services","type":"Federal - Executive","city":"Rockville","state":"MD","reachable":true,"http_only":false,"https_status":403,"final_host":"","hsts":false,"security_txt":"none","privacy_link":false,"accessibility_link":false,"robots_gptbot":null,"robots_chatgpt_user":null,"robots_claude_user":null,"llms_txt":false,"title":"ERROR: The request could not be satisfied"}],"columns":["domain","name","type","city","state","reachable","http_only","https_status","final_host","hsts","security_txt","privacy_link","accessibility_link","robots_gptbot","robots_chatgpt_user","robots_claude_user","llms_txt","title"],"full":{"csv":"https://gov.agentexchange.work/leads/no-hsts.csv","json":"https://gov.agentexchange.work/leads/no-hsts.json","price_usdc":1,"state_csv":"https://gov.agentexchange.work/leads/no-hsts/state/<code>.csv","state_price_usdc":0.25,"protocol":"x402","network":"base","manifest":"https://gov.agentexchange.work/.well-known/x402"}}