Government web census · gap lists · census 2026-09-30 · JSON (top 50) · feed
.gov domains without HSTS
8,322 of the 16,783 .gov domains in the census list (49.6%; 63.7% of the 13,060 reachable over HTTPS), as fetched on 2026-09-30.
On this list
8,322
of 16,783 .gov domains
Share of the list
49.6%
63.7% of reachable sites
States
55
largest: New York (842)
Full list
1.00 USDC
x402, per file; first 50 rows free
What this gap means
The HTTPS response carried no Strict-Transport-Security header, so a first visit can still be downgraded to plain HTTP.
Control: HTTP Strict Transport Security header. Rule: no_hsts over the census record (reachable sites only). Who buys this: Security teams, MSPs and hosting or CDN vendors serving government sites.
The obligation it maps to
HTTPS and HSTS on federal websites (OMB M-15-13): Federal agencies must serve public websites over HTTPS and send HSTS (OMB memorandum M-15-13, June 2015). The census records HSTS on the final response of the homepage fetch and counts domains that answer only over plain HTTP. Source
By state
55 states with at least one .gov domain on this list; "of the state" is the share of its .gov domains in the census list. One state as CSV: 0.25 USDC (x402).
| State | On this list | Of the state | CSV (x402) |
|---|---|---|---|
| New York | 842 | 61.6% | https://gov.agentexchange.work/leads/no-hsts/state/NY.csv |
| Wisconsin | 490 | 60.4% | https://gov.agentexchange.work/leads/no-hsts/state/WI.csv |
| California | 425 | 49.0% | https://gov.agentexchange.work/leads/no-hsts/state/CA.csv |
| Michigan | 399 | 63.2% | https://gov.agentexchange.work/leads/no-hsts/state/MI.csv |
| Texas | 342 | 49.6% | https://gov.agentexchange.work/leads/no-hsts/state/TX.csv |
| Ohio | 336 | 52.3% | https://gov.agentexchange.work/leads/no-hsts/state/OH.csv |
| Minnesota | 329 | 54.7% | https://gov.agentexchange.work/leads/no-hsts/state/MN.csv |
| Florida | 262 | 49.1% | https://gov.agentexchange.work/leads/no-hsts/state/FL.csv |
| Massachusetts | 234 | 66.9% | https://gov.agentexchange.work/leads/no-hsts/state/MA.csv |
| Illinois | 229 | 52.8% | https://gov.agentexchange.work/leads/no-hsts/state/IL.csv |
| Utah | 211 | 52.8% | https://gov.agentexchange.work/leads/no-hsts/state/UT.csv |
| Pennsylvania | 196 | 51.6% | https://gov.agentexchange.work/leads/no-hsts/state/PA.csv |
| North Carolina | 192 | 49.1% | https://gov.agentexchange.work/leads/no-hsts/state/NC.csv |
| Georgia | 191 | 55.4% | https://gov.agentexchange.work/leads/no-hsts/state/GA.csv |
| New Jersey | 187 | 59.9% | https://gov.agentexchange.work/leads/no-hsts/state/NJ.csv |
| Tennessee | 174 | 49.6% | https://gov.agentexchange.work/leads/no-hsts/state/TN.csv |
| Missouri | 152 | 46.1% | https://gov.agentexchange.work/leads/no-hsts/state/MO.csv |
| Virginia | 138 | 44.7% | https://gov.agentexchange.work/leads/no-hsts/state/VA.csv |
| Arizona | 136 | 59.4% | https://gov.agentexchange.work/leads/no-hsts/state/AZ.csv |
| Arkansas | 135 | 36.1% | https://gov.agentexchange.work/leads/no-hsts/state/AR.csv |
| Washington | 133 | 53.4% | https://gov.agentexchange.work/leads/no-hsts/state/WA.csv |
| Oregon | 123 | 42.4% | https://gov.agentexchange.work/leads/no-hsts/state/OR.csv |
| Alabama | 122 | 48.4% | https://gov.agentexchange.work/leads/no-hsts/state/AL.csv |
| Colorado | 122 | 43.9% | https://gov.agentexchange.work/leads/no-hsts/state/CO.csv |
| Kentucky | 122 | 55.0% | https://gov.agentexchange.work/leads/no-hsts/state/KY.csv |
| New Hampshire | 119 | 58.3% | https://gov.agentexchange.work/leads/no-hsts/state/NH.csv |
| Kansas | 110 | 48.5% | https://gov.agentexchange.work/leads/no-hsts/state/KS.csv |
| Connecticut | 107 | 58.8% | https://gov.agentexchange.work/leads/no-hsts/state/CT.csv |
| Oklahoma | 101 | 38.3% | https://gov.agentexchange.work/leads/no-hsts/state/OK.csv |
| Iowa | 90 | 42.7% | https://gov.agentexchange.work/leads/no-hsts/state/IA.csv |
| District of Columbia | 84 | 9.0% | https://gov.agentexchange.work/leads/no-hsts/state/DC.csv |
| Maryland | 82 | 33.2% | https://gov.agentexchange.work/leads/no-hsts/state/MD.csv |
| West Virginia | 76 | 49.0% | https://gov.agentexchange.work/leads/no-hsts/state/WV.csv |
| Maine | 69 | 53.5% | https://gov.agentexchange.work/leads/no-hsts/state/ME.csv |
| South Carolina | 69 | 48.3% | https://gov.agentexchange.work/leads/no-hsts/state/SC.csv |
| Nebraska | 68 | 45.0% | https://gov.agentexchange.work/leads/no-hsts/state/NE.csv |
| Montana | 66 | 48.9% | https://gov.agentexchange.work/leads/no-hsts/state/MT.csv |
| Indiana | 61 | 41.2% | https://gov.agentexchange.work/leads/no-hsts/state/IN.csv |
| New Mexico | 61 | 57.0% | https://gov.agentexchange.work/leads/no-hsts/state/NM.csv |
| Louisiana | 54 | 43.5% | https://gov.agentexchange.work/leads/no-hsts/state/LA.csv |
| Vermont | 54 | 60.0% | https://gov.agentexchange.work/leads/no-hsts/state/VT.csv |
| Mississippi | 48 | 37.5% | https://gov.agentexchange.work/leads/no-hsts/state/MS.csv |
| Wyoming | 40 | 50.6% | https://gov.agentexchange.work/leads/no-hsts/state/WY.csv |
| Idaho | 39 | 40.2% | https://gov.agentexchange.work/leads/no-hsts/state/ID.csv |
| Rhode Island | 32 | 55.2% | https://gov.agentexchange.work/leads/no-hsts/state/RI.csv |
| South Dakota | 31 | 48.4% | https://gov.agentexchange.work/leads/no-hsts/state/SD.csv |
| Nevada | 28 | 57.1% | https://gov.agentexchange.work/leads/no-hsts/state/NV.csv |
| Alaska | 27 | 43.5% | https://gov.agentexchange.work/leads/no-hsts/state/AK.csv |
| North Dakota | 18 | 35.3% | https://gov.agentexchange.work/leads/no-hsts/state/ND.csv |
| Delaware | 15 | 65.2% | https://gov.agentexchange.work/leads/no-hsts/state/DE.csv |
| VI | 5 | — | https://gov.agentexchange.work/leads/no-hsts/state/VI.csv |
| HI | 2 | — | https://gov.agentexchange.work/leads/no-hsts/state/HI.csv |
| AS | 1 | — | https://gov.agentexchange.work/leads/no-hsts/state/AS.csv |
| GU | 1 | — | https://gov.agentexchange.work/leads/no-hsts/state/GU.csv |
| PR | 1 | — | https://gov.agentexchange.work/leads/no-hsts/state/PR.csv |
Free: the first 50 of 8,322 (alphabetical)
| Domain | Level of government | State | Census record |
|---|---|---|---|
| 9-11commission.gov National Archives and Records Administration | Federal - Executive | MD | HTTP 200 · HSTS no · security.txt none · privacy no · accessibility no · GPTBot partly blocked |
| 911commission.gov National Archives and Records Administration | Federal - Executive | MD | HTTP 200 · HSTS no · security.txt none · privacy no · accessibility no · GPTBot partly blocked |
| 988.gov Department of Health and Human Services | Federal - Executive | MD | HTTP 200 via 988lifeline.org · HSTS no · security.txt none · privacy no · accessibility no · GPTBot partly blocked |
| abmc.gov American Battle Monuments Commission | Federal - Executive | VA | HTTP 403 · HSTS no · security.txt none · privacy no · accessibility no |
| acf.gov Department of Health and Human Services | Federal - Executive | DC | HTTP 202 · HSTS no · security.txt none · privacy no · accessibility no |
| achp.gov Advisory Council on Historic Preservation | Federal - Executive | DC | HTTP 200 · HSTS no · security.txt none · privacy yes · accessibility no · GPTBot partly blocked |
| acl.gov Department of Health and Human Services | Federal - Executive | DC | HTTP 200 · HSTS no · security.txt none · privacy no · accessibility yes · GPTBot partly blocked |
| acus.gov Administrative Conference of the United States | Federal - Executive | DC | HTTP 403 · HSTS no · security.txt none · privacy no · accessibility no |
| africanamericanhistorymonth.gov Library of Congress | Federal - Legislative | DC | HTTP 200 via www.blackhistorymonth.gov · HSTS no · security.txt none · privacy no · accessibility no |
| ahcpr.gov Department of Health and Human Services | Federal - Executive | MD | HTTP 403 via www.ahrq.gov · HSTS no · security.txt none · privacy no · accessibility no · GPTBot blocked |
| ahrq.gov Department of Health and Human Services | Federal - Executive | MD | HTTP 403 · HSTS no · security.txt none · privacy no · accessibility no · GPTBot blocked |
| america250.gov U.S. Semiquincentennial Commission | Federal - Legislative | VA | HTTP 403 via america250.org · HSTS no · security.txt none · privacy no · accessibility no · GPTBot allowed |
| americaslibrary.gov Library of Congress | Federal - Legislative | DC | HTTP 403 via www.loc.gov · HSTS no · security.txt incomplete · privacy no · accessibility no · GPTBot partly blocked |
| americorps.gov Corporation for National and Community Service | Federal - Executive | DC | HTTP 403 · HSTS no · security.txt none · privacy no · accessibility no |
| aoa.gov Department of Health and Human Services | Federal - Executive | DC | HTTP 200 via acl.gov · HSTS no · security.txt none · privacy no · accessibility yes · GPTBot partly blocked |
| asc.gov Appraisal Subcommittee of the Federal Financial Institutions Examination Council | Federal - Executive | DC | HTTP 200 · HSTS no · security.txt none · privacy yes · accessibility no · GPTBot blocked |
| asianpacificheritage.gov Library of Congress | Federal - Legislative | DC | HTTP 200 · HSTS no · security.txt none · privacy no · accessibility no |
| aviationweather.gov Department of Commerce | Federal - Executive | MD | HTTP 200 · HSTS no · security.txt none · privacy no · accessibility no |
| blackhistorymonth.gov Library of Congress | Federal - Legislative | DC | HTTP 200 · HSTS no · security.txt none · privacy no · accessibility no |
| childwelfare.gov Department of Health and Human Services | Federal - Executive | DC | HTTP 200 · HSTS no · security.txt none · privacy no · accessibility no · GPTBot allowed |
| climate.gov Department of Commerce | Federal - Executive | MD | HTTP 403 via www.noaa.gov · HSTS no · security.txt none · privacy no · accessibility no |
| coil.gov Open World Leadership Center | Federal - Legislative | DC | HTTP 400 · HSTS no · security.txt none · privacy no · accessibility no |
| commerce.gov Department of Commerce | Federal - Executive | DC | HTTP 403 · HSTS no · security.txt none · privacy no · accessibility no |
| compliance.gov Office of Congressional Workplace Rights | Federal - Legislative | DC | HTTP 200 via www.ocwr.gov · HSTS no · security.txt none · privacy yes · accessibility yes · GPTBot allowed |
| congress.gov Library of Congress | Federal - Legislative | DC | HTTP 403 · HSTS no · security.txt none · privacy no · accessibility no · GPTBot blocked |
| connect.gov Department of Agriculture | Federal - Executive | MO | HTTP 200 · HSTS no · security.txt none · privacy no · accessibility no |
| cttso.gov Department of Defense | Federal - Executive | MD | HTTP 522 · HSTS no · security.txt none · privacy no · accessibility no |
| currencyreader.gov Library of Congress | Federal - Legislative | DC | HTTP 403 · HSTS no · security.txt none · privacy no · accessibility no |
| currencyreaderapplication.gov Library of Congress | Federal - Legislative | DC | HTTP 403 via currencyreader.gov · HSTS no · security.txt none · privacy no · accessibility no |
| dataprivacyframework.gov Department of Commerce | Federal - Executive | DC | HTTP 200 · HSTS no · security.txt none · privacy no · accessibility no · GPTBot allowed |
| digitalpreservation.gov Library of Congress | Federal - Legislative | DC | HTTP 200 · HSTS no · security.txt none · privacy no · accessibility no |
| digitizationguidelines.gov Library of Congress | Federal - Legislative | DC | HTTP 200 · HSTS no · security.txt none · privacy no · accessibility no |
| dni.gov Office of the Director of National Intelligence | Federal - Executive | VA | HTTP 200 via www.odni.gov · HSTS no · security.txt none · privacy yes · accessibility no · GPTBot partly blocked |
| doc.gov Department of Commerce | Federal - Executive | DC | HTTP 403 via www.commerce.gov · HSTS no · security.txt none · privacy no · accessibility no |
| eac.gov Election Assistance Commission | Federal - Executive | DC | HTTP 200 · HSTS no · security.txt none · privacy no · accessibility yes · GPTBot partly blocked |
| ed.gov Department of Education | Federal - Executive | DC | HTTP 403 · HSTS no · security.txt none · privacy no · accessibility no |
| eda.gov Department of Commerce | Federal - Executive | DC | HTTP 403 · HSTS no · security.txt none · privacy no · accessibility no |
| everykidoutdoors.gov Department of the Interior | Federal - Executive | DC | HTTP 200 · HSTS no · security.txt none · privacy yes · accessibility yes |
| faa.gov Department of Transportation | Federal - Executive | DC | HTTP 403 · HSTS no · security.txt none · privacy no · accessibility no |
| ferc.gov Federal Energy Regulatory Commission | Federal - Executive | DC | HTTP 403 · HSTS no · security.txt none · privacy no · accessibility no · GPTBot partly blocked |
| firescience.gov Department of the Interior | Federal - Executive | ID | HTTP 404 · HSTS no · security.txt none · privacy no · accessibility no |
| firstnet.gov Department of Commerce | Federal - Executive | DC | HTTP 200 · HSTS no · security.txt none · privacy yes · accessibility yes · GPTBot partly blocked |
| fnal.gov Department of Energy | Federal - Executive | IL | HTTP 403 · HSTS no · security.txt complete · privacy no · accessibility no |
| gaoinnovations.gov Government Accountability Office | Federal - Legislative | DC | HTTP 403 via innovations.gao.gov · HSTS no · security.txt none · privacy no · accessibility no |
| getactive.gov Department of Health and Human Services | Federal - Executive | DC | HTTP 403 · HSTS no · security.txt none · privacy no · accessibility no |
| go.gov General Services Administration | Federal - Executive | DC | HTTP 200 · HSTS no · security.txt none · privacy no · accessibility yes |
| goldwaterscholarship.gov Barry Goldwater Scholarship and Excellence in Education Foundation | Federal - Executive | VA | HTTP 200 · HSTS no · security.txt none · privacy no · accessibility no · GPTBot partly blocked |
| grants.gov Department of Health and Human Services | Federal - Executive | Washington | HTTP 200 · HSTS no · security.txt none · privacy yes · accessibility yes · GPTBot allowed |
| guideline.gov Department of Health and Human Services | Federal - Executive | MD | HTTP 403 · HSTS no · security.txt none · privacy no · accessibility no |
| guidelines.gov Department of Health and Human Services | Federal - Executive | MD | HTTP 403 · HSTS no · security.txt none · privacy no · accessibility no |
The same rows as JSON: no-hsts.top.json (CORS open, cached one day).
Get the full list: 8,322 rows, 1.00 USDC
x402 on Base, paid per file, no account or key. GET https://gov.agentexchange.work/leads/no-hsts.csv or GET https://gov.agentexchange.work/leads/no-hsts.json answers 402 Payment Required with the terms (scheme exact, USDC on Base, maxAmountRequired 1000000, payTo 0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c); an x402 client signs the EIP-3009 authorization and resends the same request with X-PAYMENT; the file comes back with a PAYMENT-RESPONSE header. HEAD gets the same 402. One state: GET https://gov.agentexchange.work/leads/no-hsts/state/<code>.csv, 0.25 USDC (codes in the table above).
curl -sS -D - https://gov.agentexchange.work/leads/no-hsts.csv # 402 with the x402 terms; pay and resend with X-PAYMENT
Columns (18): 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. CSV: header row, every cell quoted, yes/no for booleans. JSON: { list, title, count, by_state, columns, rows[][] }. Sizes: CSV 1.5 MB, JSON 1.5 MB. The same facts are in the free CC BY 4.0 dumps: the price buys the filtered, state-sliceable file built from the 2026-09-30 census, not exclusive data. Settlement is final; no refunds. Prices in /.well-known/x402 equal the challenges. Terms · pricing.
Card checkout for this list is not open yet; the x402 route works now.
Monitor this list (free)
Atom feed: .gov domains that entered or left this list according to the live re-checks (every 6 hours a rotating slice, each domain at most once per 14 days; each entry says which way it moved and which field changed). no-hsts.top.json: the first 50 rows and the counts by state as JSON, CORS open. Fields watched: hsts.
Membership reflects the homepage and well-known files as fetched on 2026-09-30: a control that exists but was not found where the census looked counts as missing, and sites answering 403 to our one polite request count as reachable. Every domain links to its record with what to fix, a JSON twin, a badge and a changes feed. Data licence CC BY 4.0. Not legal advice.