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-6913802754-gov.caltech-edu.pp.ua/post/2780453691

  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-6913802754-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '91008af03a26c9bb',cH: 'mB7egvsTPKR.lFn_V1QgNGoEOV3aZUlu1BhmWsvrzXQ-1739237102-1.2.1.1-QkNeVRswlpVF2xSUdI8HVUBV8gqRfCiSgxXMgwKX0W45iGA76W4F.fTzWAhpoFa5',cUPMDTk: "\/post\/2780453691?__cf_chl_tk=2y1AXcS8bsKOZx06WEOQ2rpR3bLAkxcARKr_GKP3a4A-1739237102-1.0.1.1-yJPYZnn_XrBuVZ33kWLKeXKBYSZd3_dQ1LYTRaAtkRY",cFPWv: 'g',cITimeS: '1739237102',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/2780453691?__cf_chl_f_tk=2y1AXcS8bsKOZx06WEOQ2rpR3bLAkxcARKr_GKP3a4A-1739237102-1.0.1.1-yJPYZnn_XrBuVZ33kWLKeXKBYSZd3_dQ1LYTRaAtkRY",md: "_lOxCkvxHaO.aO16Dcgcf2kpx4Eu7IBqXn9rXpR3uuo-1739237102-1.2.1.1-r76FrKr8jmFEsMEYaHWG4Os2LxhzHnUCYZKDfv9H.5bhcE.NmFHi39nY37qM_FhlBLlPK3pLNqxKMPi6GhEp_zFo2rfUt12OL2g7XOGIBsB1HlKZPQowfAR3mW.w0qbGTjynoIAX.IL_XE74b2kbMqwnyo0qoFes_7Hsu3XkyhdvNm2KEdHc2mR5QDEHg.0TMFdZZ8CteRnKWDaHARtNfmTLIcFi5GceeSFSJfgihEdwSsQVX848ZZ0yiF1CX5ZQFej1KboxIMfG7PKcyzIlxZYsrUXgHMPLW.sc6uIjx6Mmc1cMS8cNpXMozelpIr2B9VCKXbkRbGF7szZZ5v.pnrCs2FrL0XAg_4YxumcrBXM5.BB_Olt3JOIAlMQY3ldo_SBiEgsIELwv915cgciDkqOc9xUFWgtTppUJqmRbPAQ0JIK.JvScW6xGgU5Doe5cg9.XDNa41sstJzmYrIH97wjTBG1FA_3UYkLX0OYN.yCThn15C4z3B0fOe58PWVwZOv_lI4msksRzhiE_ZxUU3qxNdgYYXOLSGRaVyL4pwbl6fh1I0gKNHiBbkeynEXQKG9VMPVOuaaTZC3wNofeAc5sN8PC__XiJzwoRW_VoOpL4BfkG7m32r3F4ru.ai4wx4jbo6qeUIqneyEdrr3TRykBmo.m.oiOVOzrEoJ.TgzoW0XPXmRFB3zxZZt.T.H258VJqWSAQdt8uya4apssfvXqfhc23DSPETClJhynnRG3lQtb9GwjsH5LnEqqqm4ksOezvn0W0zDeS8vcU3zBFRRj5cG5IO_.S6N7pCVZMNoHwrnP.x8N6HB5AHsDSR851ZHha0AyGZYzEjRj9JoxkwxbEBV5sYMsBgMSCNtlJBd7RsTUXQo2F8AN9T835L4L9m2bVfq2ycyXqxGJ.mBuFFrMNRNal_SXwN0FM7n0rzE2euLg.7owyOBVZHRVfSa5mcrPOkPV1ge8J0eF2Zlk3nuL8YZEOmnQ77HmFZ1bDekYl62UtgdiUKkaDVGit1KK1g7irpkTsG6J2qKU0D25w45y0t9rM_CgkYv8cijdGfcML_p27Gb5tuyEXlAikO5xWKOBVwhEqUYOUmjBFzMJ4_Iro1IFKrAhGQYNsL1LveIK1jz8am9TAOyNR1J3clIHt41iXT35d_qBtjEz_sutiRV6ruONuYpIFnh6yof7hrCmqaBqHcucoi7LG5Uh3mmyAPIYboAFmUezivoQ7sXrGFYIToOEah9H_OAABYLUq9IWQQ3Y7t.d7o2gKCqmv1GOjlMr2hN8C.QztwpFE3_bCVIsl7LxbnsJmxgo84IaioMnDM6SISUVqLi6l3SUHvjB7N4WdkJJIwx7I9wZ2LGAMoFvL7Evnwl66qtp9SXp2swOqTJ5PuC0LH5PzmP1EH53Y7bJoo.Vinbc.DCW.EtfdYjQdCVT5Tedzg_bLbq9jM4EPZpnSmkB4NOi6xQ1l23CieghsuziBFQ9dsUJoRpakcpLVx222qs1b5OcTRzuXtnEAZ5JqqRBwmrob5k6nha24zNpsqlfaSrO_G_XrstSHUtxW3jChxDDODoTB1iFrYLapKChJw0ktWzCw6f1tCqkCXMFYd0uFQCPu2ydxuBPKd3Lfab3OZ_TYfJcXd7GwpP9JJR4tidMiyAnA3.rHydWkXzJpdWpp665p98b1kIufXNvPGCCvo6F4vNy9BSLvMw1nc.FckPrkmz9DBY3u1RH0k6UxISnGWfhF9uDivCwvW.ejKiXzhVksGef6pXJACTVaC66dZZFnAfQJT_yvZ4BLuTsm4elfxJC7o0dtnd8SQW9tOy.TkyWbgVHC6CER6Ud7YR2xyiENmQlKqE7wRq4EZgH6cHGU8i4Qm.K5a6IOzeHRIYZghvVXSz40LW1Zw3pfwRubTO0rdbylolv9WUJ63cm9gg4CeZQkQDj6o_CwcznKsOUtN5SPVXND1EOs8O1B2QgBv9xOUdoD3hPn6OrenXH_rRzUrnqkMPuESblYf4Ay9qUQURuhwErnDdxV69a_b.ivlr2BjJpzdP7LDDAxaUe9qvRj.iQzIZsFnTxLnKnhICTnIBVGSHX8IMqrmle7o0SjsVU64jFCSMkTbK_HIckHOFpF4voCB372Nh1Ot1McCo9q9m8IqIob3kHp0s4d3b0n1KQoSxjuEQBS1Y2PPhFUsQTaiVZbFTG_y2UzoI1CfAoHPRrO.CJqir8nb2SFY9Q1cH0wC0a3Q0QkZGAj_ZqZ4S8r741xxNAgT8ciuw",mdrd: "xdpDf.3G4_MmnAzsIpa9fDdR0L3eAusmdiLxsuUSYns-1739237102-1.2.1.1-yyAXQ9EQu7yLncZAAZmWlLQ6d7lmURaBHGa72X25rGKktSkg2r4_XsaVKNa.ckZCxebPcubtI42iM41tPvjd.ntO871.P7_SMbILxluaiE9fzvg4hl89WJdoJQLrhTg65ArH61rpLjnvo8yZWTpkZtey9Ywh1fnJ9R3Gp4IR.3lXDXR6fFaIVLoABpsNGrYg6kYFe8xcBQ6ucPFDCiGJKFQpZezg293lKO2qBSJdtW5fJW7_es6xc5.zNHzoGtEsfLJ5uQHI.9MGXrj_whX4Tyr0CBz6oTxeP9jInsiP5jmhd6D4dkRbjltQvYwpJGy7RQRUI1I1P1z1TaqfG1.5om20kF7PR5K68KERCJJSE2EhuAjaDp9QpzrvFl95.Z3QKOwWS0.4x57jIFJH2G8ZDzs7pQCq7O_IIkN2vMJ6rRkBcWH0zsYk30U63m3wc2tkf6Ee1O0UzBZqaEWqSz3obl41LKqowaPmm53j3ZsZ1OzUEIzik9.5dwRrvCflm3S1qe42uUjw.NDdArbG8OhWKRxOcXrnajwedNjW_D0qryRP60mb8APe91sk7U5sWOJyl4jg4GXxVLHBOBPJfaz7yKRANmOhO954fGdGa3kElOYQAEFM4xjwzpA1FiZdyKiu6taqtrlKtEHRr94o9snHGgl77p2GJhQASV_utoKGPeo2TLfHlfDOrtW5gOygnK1L6qW1HZxgcEt7GP_bJoYWrd8CMlX_kIPcG2zt25_6iwVn6s3LQ1bR0bADEchSEO.om8Kpt6U4iPjiL1f6j4N.5I_VsRUpGdFrjPJDvY9nimpnaM8wZrIm87iDxmLwFCrLsi415Gwwk9RltZR1c3eC8kGo3Mi1lvrcDM7nCRH1OnGTkG8krV5.7Csh_PSjL.UnSlsyBt4XzbGfZlNM_eI6kxO6yVPVjSYKkshl_XFojn.02OWL_.duQ9YzmqlJCFqvEcDsoa1kjJiVm3javDp8pXUASx0vh8xxpwF_nAJzuwtHUqCDJKxIesSO4a7HI2qtmhekkDvHirGqwmmP7aK_AkiIydEvAu6MORLqC4uy2V0BdpkjcBejF9kkuA5oIVLRH5jRGacl4n09tFqIl8.j5n8RWcg.znY0FnA1i9NIqUAzRWm2QptyKyz8KCg9JOTcaJC0Oe5IZnQULnR9NcKJaqs_rOErajkHFCdyEofvzm5Zv3Ifd93lQ.QtQwkqEofdyVlZ.cuimluSy3IhhSwh_KszjEU37mNSLjLFoK0bq1wQHZxgN1Uaq.vNNWrxoHM95nAd6oypCZKuDc1ynFfkDta7C42_vr9Iqgg5bpcy.c7axr9XwypWFuoph7PXfX9W8lm_ncCLky2eGyOr6YQ8gxstjdlIfAug8EsMhC9Z69e5aeauUznMX1QEbhuP03mzxCuiK3DEdSzbOu48xIGD3ND2jM4p9XHMtpPGDMKZqNUljArZLQqfkIU5o28YUli5IyZWGFbHaPg_7zg49GCrniPS0TUDu3EelJzy4So7jfKeny2w4GZ9Rc1fxop2yPOjps9oRud8erhHreFiZ_r_9PAbRO5XhR1KTBnVGZZBSs9YhNIW4d3.pEiHfIdjq7d53NFYoTSyh6AG1fbRc7RSmTnh1BmOTC6km5ordu1q_qZYTpfda1zqugtAnPRGIMiZ8d2sbbIKR1c4jpCVhIBRfhgxcqcgOJpy_nZNbBApBPfkHpo5qpQCDLK9Kx7kdTwZwLHhuB_Y1.m_9Uv.A5zpl4gXoEeLsWwUpZ0T7rjfsKQI0y9zBpVYe1KYyubbruyv.x_OvL8L4QQEqksZEjMfCwTNbyDJW2pVoAHGj.M_wqmiqgFOitzeh8Pe4vPKESbS"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=91008af03a26c9bb';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\/2780453691?__cf_chl_rt_tk=2y1AXcS8bsKOZx06WEOQ2rpR3bLAkxcARKr_GKP3a4A-1739237102-1.0.1.1-yJPYZnn_XrBuVZ33kWLKeXKBYSZd3_dQ1LYTRaAtkRY" + 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