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-8074312596-gov.caltech-edu.pp.ua/post/8074312596

  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-8074312596-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '9110d3015a4a20cf',cH: '7sB_7mB2i1WBu_1d3GOW_I4nPofwN8GYofRZMfiwWl4-1739407826-1.2.1.1-jEEoPyNOpy56OZh4qIkxIev0JNYodN5OAr6EL18bU5iJis8GFcs8lEipTr2QYyAW',cUPMDTk: "\/post\/8074312596?__cf_chl_tk=LWe8RAX4W.M02szqF6ueL_MoqlinJwVYimjJ9bk3D.4-1739407826-1.0.1.1-MZOJt_.97RjdjOF92lFKDVQougGPJNJrFEvRMU4B1o4",cFPWv: 'b',cITimeS: '1739407826',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/8074312596?__cf_chl_f_tk=LWe8RAX4W.M02szqF6ueL_MoqlinJwVYimjJ9bk3D.4-1739407826-1.0.1.1-MZOJt_.97RjdjOF92lFKDVQougGPJNJrFEvRMU4B1o4",md: "omPunQtMrv9tcVND0rsTsvLwxYNNLkPzXXtNkgiOnPI-1739407826-1.2.1.1-iaUgzv21rbNxyE23h8IAYW5aDDCVhn8BmrxxKUgtNtCuHKKF0MVRZFehg.xv6FYjyOI1mD8_C8S1vOYusr6_CmsXTpZfzbyP5bT.MNEhaarAupI3dUjSwDxdhk2e9tOcJOc.glF1ktgOjyh2vsUOc4xVqQ0cQaLmSxQAhCBar6auSh.TQSYzcZKIrQ07_C040WGXacodBy4DnHCGuVcCTKxi3N1KR2gg69d5QUNxNXcZFFZhct_UK3uH5rLIWheoMwoXjRrZ0BE4iiIG5hrJdcec5Ms7MEResyfXbn1_lTHfrTV4NyTV1.9Mt1U3WzVOkn4YgKcnxgCqx3BzVJeuoThuhOBCOVUAzQo7U1S53JQv8KeomALF5J6qpQfA9U6KTAsrYct6XnizSWvW2v6Yo2mnlSJb3xykeHA.HlAf6S7PoQd5oBoAHSVk63F9K5bzgU_JdUGxD3GhU.vdZSfd94PkRqy0D2lZpq5IYsG2DSoLszIGQt6mBoJ1DqcmYDtK5HbCCz0qMKdrD.JTzprsFRCDuKhmkJo7ywz.70BaPmt.0Mb_SpU.VRED0GkLTTuVDWaYBF03swMm0chR.P8qa9QuQg7iuRmJyStVp7eO5qZunedAysImnwHk9vMGLtFXY6N2Py_Gy_nCbZkWtvmhQo39s4ca.zUqbfaoieL1Dp5VGnxRkc9JXwoewU6RutTe9aKQGhs3LH.sKZlVC4b9jxGhUKCdkJCGADZMeuWjI4FSPd0LHyamSjGlAQUoyZvgZgFFSDgSti91ZCOCWjAmbZo0fH7fgvUNjpcP3TFphIJ6oMtmqUhOhkQjU9H_NeWuZ3FzFbhW6xkwUGT.RKNP131HsjDNkT2yN5l5fde0giTSNn2i0Mdj_mDZUEgcp6uey6ZHmZlmyAhA4w1WdWaepoMm45GesjDA2TSZNLsPpxmYbyKp.LJLXwiAecwxrv7bZtnpDGXfBajg_CX4HOSWqs762pEB6cYHBv0I6NtLhuO2B91krwSgZ14CfLEXhxKjkE_wW4v9jnC5r5Wyf2o0How..I2_hFshQ2JrhZD8BaHXt2994szmGe5bK1Io6hsIbJfhLDMd0M0ZXmrOw.GMk5LJXBpYrJh2qQ2gee34uECbkgCGSkY.FpCz86iifly1oKBhzKxMfWqpTeInnfGU2sFyDTPQWcwHcbb07rHFbFDHp2qpyvbFyqFAjpgL9UKpPz5Dd4_RXZu4pZ96grqfAp6jxWJ9P14XxfSSV1tAjtgT6YZNfkMaoLCtb5_qKg3cUqgW3eb7pjcZUq5QMPJnIVIpfR8HkndNSIwoY7hwDJ8Stavh.nSxrBwNrfkBbldzqYdLkOB51gP0Ok.wxhklVliOJ7V1dFxuQJt0kg3ix4V9j1o4Le7ICp9z3YYJNkw4pTVF18koXBekT3G.WeygQGKedqb0Ns5brctjnkFF._335TQ7KDiL_ACn6y.O5jxJihpj0DLjVHu4ZG8gAQ3bfWcyr_9qV.MZtmHLkEKVxSKytulGm_BDnD2FQ3VPrKKiwsyjds9dDVacoiiYFUYT1WV6ivgc5nWh62skt9mZghwTuZ9MgVTtwIv_U0sdTq19KhpGnMXqEvg2HyE.eay3SE_wjpWzAdAaCODDWhTH2j73prcv2PCypwXFyupFYag4A2dNRvvqRlb8aa9OkCP_Y.EQf_ajU1.2Ys0FD8GmCGaL6I9_HuYrwVeD2TxLhtD1taqCjO7cCQlWaFkrFw_O7kYuRwMEugDOauJRH2onCvlj4VFLKDYpRve_VS3WoyTEjKThVxBrDvlojrL7.ln7imnoSpTbsf6YJXD22mW58F.O88NEUFGmSHjYsxP89YyfG0_hVBGcS1gSz1.I7iFwTTW5HdnJ51ZrGAdj9RHjyyiTFijJ.8jMQL27iLM.JJcp7T325P9zPdPSfzzQvHky_8klatIX6TO0Z16vli7PFIptBFRyDpHCI8ABSPRUa.kdzEPQD.ljWClilcpC2JXEfu.FmEGuLxbl6oZUTd8Q5wf57QonSgPY8vPlzQ27UB1RgHezyuLoDqQT_VChiJnXuZqFo0P4O6hz6sz1lDc5c5c1RGdGyfqfrW7QAksVzhSVOXh0a3K69vzUMJ5T1LrWibf_hzUy0bieD1gaNB2uqZpJm2LVaXgvb_Lmeib0.tudcT9Cn.tkMJnQbgO_BsR8oytfkqEIujHNKBIhx9SDhY8e73P_ZKLwlbNMG7Egn9NKK_z0G6IAW3msTWB5djmIug",mdrd: "y873e3rERkd8UiT_08mLWWdtJdURTj9UVSZ0B_15sTk-1739407826-1.2.1.1-3Co5aPJnnaRM_aybTyizM1gvp894NgZ5.6r_ZVpwOSbdXg4pnDTZyuTi78ubI2vroSRolY4bDXixPy2jyDdD5SEUAfaaY3qqcIPdrgzjSKKWL1GSZnYwwQTTOP5OQsKGRD4VX0lvyHaitc.GFBNAJ5TR79dT7.cV4DT6rlWN2aNCP2LB5I.85CP7gfNKKI1KkGU5Da1oJKMxb6u7wzowTEBckLxRk7CUEQ6jBHTnPe_sP0TiQPNqnx.UdkmMCUOnYAzieGt624VOFEAaB8u7yCQfpNFmkwq_rutg6IxQnrf7BAThIS..Q1ycrrR38PuTruFnzak5pZLS4k0g3IlOQhVrfGA5AHLvu1G63VW92.F0wj3fDlnjgcPDvO7ulS8UK6tAir8BfaM5W4dRLZWqCELg1kUnOm0IRvKTyLRZikYt.Z5tgsAgo9WxODhexj5cFdaGYLV7DatM8.ChUno26ndtpk1Hgv3GAiwUR7.hC..Rw3B3tMW6RwNBIUXl7uJHE5s6P4zvRXcDhcqOux1Kr9aGX0eG3Pr3.SDzIypJe8fGXtfI7kkwIqZpu8sPKG0iTmJCY5gLgRXsqV3chQ4gMkxVSaLcu8GqTTrN9vbcZKDVrTjuFoesEMl0PLUcZVlB57jaLAOU7VdCS1Ea9_7Brbh_4n8NfPSYLVxqkCjg3_SSHFcdgGf9y2OHK6WOu_OHvAGcfLSA4oDn2LM0HSbrHZ1zo6FPCGkyFq5cO3C7cPl2hdWz.fZO.kDmq1epcxlt7O2nTfpcW7g3JWkJGEh5s9Eu1zKzZUctEWCw9acV7ljvOAq_0ZrGdYbZw0uOIdCuN7uSE96i41vjhcRyY5tuuh9D9w9jEhbaW9_b5cI6oW4FmPJa5ztK_dy71moSZQNO_0diNLSQXF0lBGMB5C9DXa3bLXoPNFnK56z8BFPvFrl46hIeFWSUpl1JnaTFqCYDaZ1BWf5ZfaYIL19XBq42tdQOgHdhvS9K0Z3jntukGi9n52H3bqbcEUxQVy9Rx6ggIxDCQ48bw05cNNDcRVFe4JnSXPe9rRfYo8Er8UuOqu6uQP_HXk3KYfwi.F.n5.34TShIRL4kucR6vCF07gzgdwqWMugujVssb0dzAGbidTDB1eg_QjuIcc0dRfnML9YzINASlkVpQyy5tKvJo8m8yAjPItty6BjSuEmKeQ5jsR2BX5XaLR4WLrWcQ1TbjG4eFfNq.KMy8fD682E6p07RbKXKsnxnhWebL83zpoFXlgBfR_vl5bGAdmTZfU4Ea.ZQeKYFcUhignVPPq9QHmjEHJTu8p40KrnJjrMNyXQSVWSzZaaofyRyJfiGCIN9d56T.aDPj90fGB77iXyXB9j1STS.NdZA_GLqWvoP4I.KRDYT1ovd0eluYmAN7PTcmIOhgjPtsJ2Y3Q5GrW3KGm8fl_8QzERwc8VBaYg6U_hyBVYsn8WXgbjEFozhK08Nbc0rLAwPjRFZ91dTCOPj3RmoafZrfE.qCXrFZsKDl71RygQ1TI1eEvPQW9kQ2GA98Ij8QId7xRy6VRgG2CqmX1EsiuH1mgQSUv9K69FWw_ZYoH75whnT181ALj.BBx1J5okf5UXSmJLG5mefez1oU1Oa128XBnbY7n_7IUsTPzmVSNzykY1Vv8bdXn.8bSSupiPZ1rrbW0a8wwv5joNLhpIQskw1mrobtceOM0MtaVhkr9JOjeWBHUMSngAoSHt7S01gQwMPs74I2p9cHZf4xysKfi4Mp_bF1jhvf29hD_lzocCO12C0B9IxZPAHPOXmburpmdy54wGRbbHWfXFL8oP4cmzWNSjELwUWQF4BF8fwzjpdvre_2DKSro5vpZgsAOkD"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9110d3015a4a20cf';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\/8074312596?__cf_chl_rt_tk=LWe8RAX4W.M02szqF6ueL_MoqlinJwVYimjJ9bk3D.4-1739407826-1.0.1.1-MZOJt_.97RjdjOF92lFKDVQougGPJNJrFEvRMU4B1o4" + 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