It looks like this is a web page, not a feed. I looked for a feed associated with this page, but couldn't find one. Please enter the address of your feed to validate.

Source: https://mit-edu-2469071853-gov.caltech-edu.pp.ua/post/2045638791

  1. <!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="390"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "mit-edu-2469071853-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '9100fdf4fa883ad6',cH: 'YuLC9QOxMmbU1FIHgIbO1LkuNuI5IiNuSoLh7FdCsUA-1739241813-1.2.1.1-Rc.jcNSzAOSrXB0aXmh48Rl6jl_eRKMqyW5G9O9kYre9AeIY6VL2his9Pe5njLtm',cUPMDTk: "\/post\/2045638791?__cf_chl_tk=s7y4cojY._GubE4tT1Gbl13rQ8DU4P1E1C1GPss3PVE-1739241813-1.0.1.1-e7tuOrhS9sF1v8_e.Rh3Dt5qMWFhWoSJ.1Ytac1osIc",cFPWv: 'g',cITimeS: '1739241813',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/2045638791?__cf_chl_f_tk=s7y4cojY._GubE4tT1Gbl13rQ8DU4P1E1C1GPss3PVE-1739241813-1.0.1.1-e7tuOrhS9sF1v8_e.Rh3Dt5qMWFhWoSJ.1Ytac1osIc",md: "GRGtyVFm0lGnyxvJ0RFzJpSqTHgTWsgGIDfqDUpzuYc-1739241813-1.2.1.1-uWJd.pQdluW66uS_YhRDr2gy9WkOVLZes9V2sN0AbSLG1TGxu35P_QCGWe2ZqI7Xeh15Xm59IECI1GHcldzUZJVc9z1fRAk.q0Q6EzAquOTiXN0tQSuvvmP694mHpvh99cPGVixktMxMh83CVSXXaUKZx2S_7oiGbfHkqJRkgeXh7_JO8agow0gTQL3rQaLubnrjqX5AoKaPZF5kxaMFcSqIOQzrBvLV6.o6SIxzKDRu7FeKAYdpXl9Y6cVK83ewbj_F1lJFdHYJFyp.rqaGWLgOzSOjbLlhWifcM.r351GAWsRhgWZcAqQ_Hs31s81bataffeeXBwh4U1suD3viykjiKuoxbk9xCk0Du_IjuXYb98u3I5SF2.zjnIAn4I.yYc1pZZuwGI114Jwjz23FoEjGszREdtnsNIpYNpAi31v2uA585jUM6zLaY3KzbooOLfy.RJSznAyrcPYdV7VIVPhP5_jrk9f1fhG2I8uKOSfGWlz.tFlikBrx0OnsnVGgL85QplpGhajKtqtn4HFBoMjD6sZq_aYT_Il3oJtyb4jE678k3rB7_MTWSEzoe223aptOOpoHhzQq_FI6Rfcdu3kj.aLyjAsJBQewazotbzFQ1753.6lcoTioFiuLvfRrYCi5XVpCsOBIxr2w7kUg9Pknw7YWs.a6ABSA0EvgUjv0xv45T.PW4VhogDXGvnL6T3RihIMobWjSg8btRWOw1EY6aazzvJYQepPtf7BZq._0VHEhhZLNTZzzXcAhGHo8F8_5108nBUFzInxEqkf_wnShxAKBtV2mVTejkMaMCHrWwYNnR5zZ.nDRh3_MfAzyhww_2Mx9qEk48OnWgYk7FvaSvg4SIiTvc7ECotj.ZlBswOavHSJg9v9d5PKNVZh9hUUKoESLexw9X_INFwOgrTJfyk13KTIKF2qkXDNiuozNo5.YpltMhPiEtNDhVAEC_IgZ3X8rMXfj7enhYWD4gjY9k3TIOevM7de86GxbnRsBQfMZs.7bg8rXcFEYrr20FoqWywmhMN53.3D6J1VD5r7PYJ05PBDTUKw3tcdjNsiijG3K2sUYd2Htix75NrQ3Sw.BqL_CZLclppFEvK6ds4AH.nAMNOtMLehZBrhtUeesWKmuHxRJUBFfCODWGaoWhyPsGXJVUD9ncR2NwcgKmorQ_LfjlHC.ZvLO89yMRxWQ48OIGIezysMKOUDW09M4w1gW5Ej03YMIJBPFgzVU3uDWrFHfRpLDlEOZjEqA4OleFlJ_ikMzhGdURFsoD9gixBjUKneB_apmIhf4LY4.8xcSCZlW_ciA1b0DSDqFixBBnAjWbp5twsEOFPrKy9johEfCjMad.fObWh0VuKpR7lL3VRqZA_Sk2v8QghfXxpfPq1SXY7AnppUsfTfnCm_vWtl.0WVDd8pAJqU6nNK9ezOfVgte5ZoP4rxi7cTOQXposSyGwdCbO7Ct3yN_9VIGDJvLs_cpppXEsbfaM63v6X7WDSmaHpWcH90QQoXqdGPB1es8L4I0P1HZeH_N03RaGDXK0iPJ478eRlJLt91VDajqkneI6S9cc0kzyURfd1Q2KvyTL352_suS.nM5si9pLf6ZfBcnv4n1_4Kq_l0NIqDs8ECGoXZlUe17sZAa6qFBnp9QN.S2ctBH4LstR3zDCgeII6Jh.39lrczYo1rPuoDb4TErjDwgz4WwfjSnv0JXnOgREgQb35ohgtT2y2bXufmtR0sITzMoNjoggqOBpdv5XIoU5YS.0KnDxitOEIUT6XxhpeI7kNV5cM64ABoPmiOK5UcgFimPEwpYtSifsV5ka.pa28nWmpjuQmdBf6N5Nsu7cFx2g02XojdEzcrWh2uBm.sPFAbMPP0GiEjUz54PGKJZFD4HBOg.XcaB0OpYpiy9q8OfnKHuG8oW_f3_8Up9bPIsVP5w7tu0FJByr7gsySZLkOZU.AjZXLjRGOBhP96iSVH6eQHWxGIcCE7ZRL78gsRJnAKwqbijmxer8.spYeLjSre54.hy4ZHwr7s37lDDnHDvijIYcm.A2H9e.wJjw4keiANqgitfvxUVTR.HlpFPouMNKmIhhSTRn7xr.4C94p6FMIhusfO2aRWTyorUqLmMXfsyjoTyw5QIY5XT1B.jGBND35aHpKEzJqSvLHRcrY9ttN_M04Gg3hT8CiKzsohEA5ineCeHABoj_XP2u0D9K0S3TE2m1sRW0VoMAqPuIbfbesgInfpiz9LCP8s3cXhg3s6Yv_E2feyfTg",mdrd: "C1YhIIh4UqrAU2ZVGE61PdneW246Jmse7tpMC2u8TvI-1739241813-1.2.1.1-90i5seEwH7ih7wAbPX.728kF0qScCd0h5w9rtcjteBbdyOHDFQDQWe9vgT_v2bapAaNI4C4KQwg9e5V8dooG9GtHPrcB_sMQx77XZi4VVMFKgERTUyZpWvG2UxCRWadp5Biz3OcwhzU.9BPynC6I_K96C5J38mb1wD3.H5tHuBFBufOK.sso0f0DZT8gE6h1G_xpDerRuVkKBkFRdK6NKUpUg4063rPhv9srgs3_czUG9M7P5jAgDqFJCW9KIU0pGyfJbNw_oVPIZOK3CU3l1mHUKofc48KgH.lEC9bLA3dgGmlb4yZo1IsGCf3jJapbDXiI5GKEtYK22MNVfO1YczobImHQK3WIfPx6WayHNkWDHtGNPoCq4KIlkbLCWk3CGOdSQig7znvZg9Ck97MWkC7cEIUKu_yDgp3MJpjxCKSuU3utYaVH1oW1byh4lQTywStCm2LR3rKvNBLS69Xcc_xhOp_wQ.JB1VEBcCM02bkE1TpDp7OcXQ63MT7cpDljaNRMZHnTsAuzmjqRc66rgPCEn8LNRqYkjQZJSWYkn62nBZAvYJSCm0Op.ISDpXD8Ri7BzaUurchdlc58zGzh4yGirqgpV3w77S0omug341Zli2JvNS8py2O11KlS4k.Kn2xAxsBqTgSToZhd7P27Zn3U06ZoV2sGgKg56kTQYmAQ7bHNRFoEs8WhZsn4SqmYLK7E40v9UmYJfevXoZpLIyO2r0q7Sff.QeK9tk9RnWLZAWyF1elH9tZmEL18pHPDh2XC9sQFmXQEASF_odSGZXwkoAzU1UcGfSJHcbfj.414M824bYWVbsh4DvLIeJZ_XsrPY1l7a6c0xA1yNawgOLKOG92cWjDK4K3gYOniSQXpSfacKnJJU1vrJMaeomuMvFqbdA.SDEF0MKNiiAqQegWOwk9GOXp4qPctXfMLQZTBqLFbyazeo0bh6lFtED0f64hsmPRTUUew_G4aa1VgaoVqT5cPwFSZw.q8AeUgPbys6iGRwKNDb_ER009Kow2laiRda192LK5z0TAwFBpChkPtKDmZR2b_n6Q.KK2J9icuZ_A486dN_1pYz0HqbE0PwUtV7b.azh5gGh4l3SQvBaAoJqwsUJlaKi_AVztEkqbdZbXdYsqIw0zgq3DTE_j7IKQI_Hexsl5XQ3fiXYqhm_sF9zyNpnakovyUBzLxDVpqB40hWzyBBns0IVBUDyaoI65gff_Su.ZsiIUYFhV5nLAiM2R73McehNSULJ.ouEeq4F9g_dPRQW_xfWsvkzy0HSrUiHwmt5cqzQ.HldpHWNXjkMvg1qwOsbiLYaGrv4dBwXL5PSnGjha7IOoWHpfGrOKs.WOmRkdOilZ2gpSQ8nBA9Mwzth7H4iEXxC6knLuSxgh5dkkUpF91DqQlVHur7EI6Y1SqL.OrfMmCcDVxeXDtEBYWeAqo2_qYT81Q1Ji80rzZXEKb0njQJcmkzEzTc3YUu7iQb6TKm9OBbwj43.UKmmUjsaqm8iUdPryDFyVKSxUGt0AHQV9AJUxI_gBH4jjuOdEDU2qLw.GT3ac1WdiPpPTU0.Sbvf0JoA.BZoHL63NG0BkNLN5_G.THgDTOHCtH5LcTr_Dd8KSQ1lcl5Ey6KLQGkXytYAiw8fPOpbDu5y4ZYyZS5fegIrFaHn0TVS36uurWsbjICXA4uU2ewZV6uXKgh2DyvdPwZ.05tl5zq01cbOKhvF9QVcfA17a98dyE4sMqVhwcD10u7c8AD7bma8MehPM.L9K80yA5rqUnPBwnep._J4BBif8U81EIVxZlBj3i_Pe6bOfArVzWKPHsyCmhpZRcRA_8M.oqXdPMyFr3BubpfrRV.r0qG3Jb"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=9100fdf4fa883ad6';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/post\/2045638791?__cf_chl_rt_tk=s7y4cojY._GubE4tT1Gbl13rQ8DU4P1E1C1GPss3PVE-1739241813-1.0.1.1-e7tuOrhS9sF1v8_e.Rh3Dt5qMWFhWoSJ.1Ytac1osIc" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>
Copyright © 2002-9 Sam Ruby, Mark Pilgrim, Joseph Walton, and Phil Ringnalda