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-6014893527-gov.caltech-edu.pp.ua/post/516386788192

  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-6014893527-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '9100d70c590b2413',cH: 'YOSLspQzxXEiLwLryXqysmtUkOgqUrAoj__d5jwKrfA-1739240219-1.2.1.1-Iz8nV6G5nzAPaiVCSPnb6kUgNjkeXuv80QVObuIfA1TN86.aPF.gb8pH0kJZCaAz',cUPMDTk: "\/post\/516386788192?__cf_chl_tk=ESFsRjNl.4kILVnkNYaVxWIT2ZgH7BTaPd55XmiuQyM-1739240219-1.0.1.1-XRfD3N4JTR4yRGv2aHVtgMlAotb2qE4DSSDbtJBdMDU",cFPWv: 'g',cITimeS: '1739240219',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/516386788192?__cf_chl_f_tk=ESFsRjNl.4kILVnkNYaVxWIT2ZgH7BTaPd55XmiuQyM-1739240219-1.0.1.1-XRfD3N4JTR4yRGv2aHVtgMlAotb2qE4DSSDbtJBdMDU",md: "SbMISnpoN36YGglXQ5BHjfRsa_F1PELT6pxgBmFBE8s-1739240219-1.2.1.1-wkmpm.ffo4xTVzQ.1kRQSvK4KbgUc6kMzH.libQgjGeIZNWscvs_wrovChJ18RHH8lPcZZVPE4Z5GORm_NcA9vjl8NBg9oe_4tbtBpn5_ga.dx5zbV5dlSpJmBKH0rvQA5H0KoQAu31mt8OP8xxzvXV2gpy1sLoz6vJ9UuDcVSR7oipqmgDZnomrp0hAaAddXhyDdJ.DCEMZYJPk0miokdhF7mavWmLwYspf_hz5IeCJ2TVDucXcE8t9dzwEcrA3drYuLXiebFI4_3_CJwQ9HJ47JILjcH4v8Xdd5uzat6nY5j7v7zVu22NxCdJuAEN_wRltRKIH260HfE6xDOGE3B54Ss9z5HOj97noF6Ewsu4EQdCfdip5lfL6NN8g92sfEiv7fW_F.weed3BDMlk3LYjKjz6F_BG_Gq5XPaVgwJ6zvU4nkKFzbGc0.mEMKUaJRhKT7TascwIHBhgidYwfCMIX.am4il7gO0IkNd.muH5VJZdYXYXsB2Ct.YTNl8ntBsSLgiNoQr0gvWerUOkaQqKZoSHLrOMVBh3eMp0ESA626pY0hYOrAeocClQDZjjT7ihgsFe5NlonQdKOq7QtfkEaadJ.wE9QFqk6l07WyZOOW7ahPzosEX3zOusHywgcSP8ehU0h3JVuR5Hy81mecuqswMtyfQXrCMMNYOcs_i3uf9rCTHTrAcdOAfr.SUknfGd4ypEl1ID66Y1GxFThJ8qFZqa1GezhbnnfQEEd_t1NsA8MBs8Aznyolsy42DEbQkymGkki2EjeX_Jcw26ji2cIkueMtKO.cyDsLO8g7U8ED.RJPza3kc4CKMvT01rIwLBO9fWu2AFhMXIfB0jLKVKRfU1OXc_Ja0ag5M0As6_Zom4g708XESaUiJPt9Mge3JXy3q8pqdLatl8qftrG5qAXFDTIizuLtNrxP0Llo3chP7tHvix9BtuAlcDMMSi8Y4BasM6N2j9uBrvc8IYk1Lw26CO7G6dr2p3iBfpuIC8b8e4Fx9klM0S_1XosHV0MLGIK.8FIjlCBgg4jAPIr2UPi4JYELqqxplXJzkh6YDCyQE.7nXfUhKObcel7HVpEq7LxGwNN_DhF4X.YVOqNa4.8pd9URSK6sBPo1LapQ_Q5Olvug4VaObrJD7p4a.PRYR3ekbwmuaGaqRaEcD3HWmyEZNsyqTnPI_bx8hVKtW2CJLr0s4cQe11jOYWMLecyYSYiJoXZdTAuQO3ay9w8ktXNTp72nfwhw6U4Wtm3zzAdGLm77iAjln6pZ1wXQOhJdUreYrRJMBdFs6RDIkI_oVA1H9SiKN2Wz_n9rytNkFHQBOY4Q6OrooNR1Lfa7hSR_bSQHq7k9YFD13iv7zx9YGAJiACLpDk8JF.YDXPqve7aSNVxSj39UKgk_5jia_HmlxP74RnCpIX8_LrZ_iER00UU6D9yfzEoewyUQdx7xahRFnZH4yab8m2CWRMwegPvFhp5elou.CW8PfP80qYI3XaZSOCbOiWjSsy.HU3N9CcoerCArmY15en7fTHdp0v29tlZYaZLydrOLNtNpIb.09aCFmQ3npbHJ9QaM79ESkVUNqm44bPo2iJMfgYeFoOLRr07VBxaKdGFk08bCB8wTCDv63knBYVZfaw25yzQ1IBnaah9.u6zj25VKjyUAfjNNfK0ll5c0Hw5nQiEoB8v1uIgcpZlbJqZl.M.9dKFkRVvKUk6AkpkNhOBQuoDKmV3Dkmm_WR0OfdKcPW.YPrbWn3k04Zsn3ntva5tAVtOFBkeubdmtuKCPK7IIi6ChXuYrTL9iRpLPKOTfqZn7mQg3Kzx0wVWRoqMpia.WOb7PXnehMq4W7pEpqeOIxHWgOHr8YqNNUzTBSQTPpY70c4rwbt7.UM98bek3UQ98uOEQRet.9CCn9reCAIWyjSViFKUo4t.D7AZFYQKU0XECnzkLMXGxJshsn4oRujgiHG_fzi5scfYboRUg959tFA6XSV7kJySxiJ4cH.lIwQ.W43K0liCh9BpBzPJp7j2vsTl9BPNKofex807lLWYaUQMjmYV08jMuU5Hk.QbgCD.2OvBDB8XDI0Ee7vjc8M.ghuPxnH04SrluVuIlAbfcKxUvyDoUs2VmnvRsdSK1Vbleq7vAVOKR5ODFkUhlgcbNTxfkUwmbg_km6DccnmOHIsEFZF3zbYi8fN_C5CCtSFlrZCnmxovm1mHOA3Gt90oBXPSd78uPg4H1Cxx9M9wqivoDTPiyZMHBeywm4KqSPqA0Qg1Jw",mdrd: "fpC9CMGXRjNsLeSIls.vjvZW_.U0BfuH3o_CLVJVcWQ-1739240219-1.2.1.1-jGwC3IyKOlSYuv2wUQNWfKGSZx4WYlwJXEGglpQXcfvsWZQEQRErND3ZUteVJRr6cJPcexXahSmdoygoj5uLxE91s._rkmZ.24MIhGcfstkTUuAj5mJwsxnl_UA66z95iGUytZwUif9ZNaKGJYsduLqudt45ufK_KL1uDgcqfl84q3ySopm9ZfRKb.gH8bmsAoKBVAP1jadSJKSqcZb6Mm.CjHjlYuUL46jcFc45MYr01yH1vdM3s3iWEkpx7pbvDQUc9rNGlbH2J1KdNvqDsa3F5HImfLqHQCzKgXIxWwnvDqR.Rb3.2eE8YAZw4vlSCb3A1E4p5DBHNbJHxkQp8.mnn13ykqkvCsLgSHdaamYnwZZPekFMW_UikO3Zr4CavnP50ctBU0AFAueF9jXKROLop6Ro1o6pcqWZJX6yKi5QGBF4KQ55ox.HDkKe4cfB3zyK1t24lmKfjXMPGZ.c7YkOqic15VMmRKSwubnNZUp8ZddKWLfiijrGs0PtMm1TPf_lOfgWgI5r1WcsLlrXd3I1FKy9cu80F1ic9dTvjEl76QkucLyGAFNiR_OGUwSDxcLebkT6lCXgTTTbOaLaSuR9XWVqeUBQk20WYzejEMDWYCse8d3JqUBb3YniCOemCbAe2uJBz9X0p_n_V2Q0._D9RVM3OIQvmGe2IViR2HK66jGn6MY.f27leE4SycYfH7mtaSRg9gvPvsPO916NCqxlt3uEPZyNu7r3dMQTW0WOh_4njNsPI4voNqfsRUdo_5f5D_WEZVHv.bg_0HVhryiPbHGzvTPZYK.uXr66gum7iTAjlMVtcja4CXnTCVhbQjSxmOkNlUJVt5GqXk0LbmYtmQ2ZTVHJLh8nOzhY2VoB8z2qoi6FS5TftJIjTeGZC.GucPcZjN.grcUJDbzoMWf3PkRv9N_A1_WbS4pxad30AOhrgqBUoOD3gDiCcKzKVqCm9OI4.ZiMMlpJNd55F1LDmPWeSHnl6NaNc7OrQpnLQS4BqoEpWWzdnlsRW85YS8J3lWbxI5rJRh5R6VFtGV48GssO2nbTiuSHHPtjM3QiJg5XW9iZv3uKzkX3BmxWoWWWcf2hCsXdXFfGdD0ielclMGDLrpPIZtX5f3kJf6xqgP5KVWwPUbF2Z5VNuEV1jDfZgzSGjXBUnL2BIDlenpYyZCZps4HvSxqeMGcqf9AT7rIzxf4COZ2rj.tJFaWGGZbaqQRWdOg2pCtT9Fzcgk2z4MqOEUldUGYFYWiqoHByI1k.79cw72dDE9N0MNaT5cRXDMRFxf7Sp6JMKK5PDtUAPEtXxq3jS76IzbvfrWeiHnYNKVshhwpE0q78PlquOS7t0OsifKqZ2ncMpUgvByR0TWdISWGIZlEiG47pkOrY6PVi0Wn1y4kKk_SSEUoDhQz7j4.C6HzQoOKQLJ4we_xgj5b8OpBkFGv7RaAZi8yCcxCC6AqRowLBtthLJjH7uFOiJQi32kryH1awtj0TimiHs1ii0e7Ffu5XgFbcFS5wojLR6cAaqrwwrlIhWUj6uv7VVAo2xM3w1uhMpH9an2JLOfFOawW8_We49TW9qAH._qzEyTRu0w11x1Az8fomFRYRQhZpX7U670lxBQ76p7OfSKH3hKD7OrsdF8gq9v4CBGbp60dX9O3oiw7UiAt_K9D1Jzw9C1NcFHE_5XacgT1bE_frolDQiRaVKJQ16oH9a4vy03bfB0KALEUdWr3VHksIWNBsPW.OoocFtWVWNj_ZrgqMu2dw65qw4Zm22xJrZznHwNsS1DOlekeXpC2UQIw31OXfY4kGKqGfZpkKlnNOfSnTlEtVV1muoJ9BBqPe8QjzpcOu2Ah1kNNjv0psB7siYPuCxtIvNa8ZpT5wKw"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=9100d70c590b2413';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\/516386788192?__cf_chl_rt_tk=ESFsRjNl.4kILVnkNYaVxWIT2ZgH7BTaPd55XmiuQyM-1739240219-1.0.1.1-XRfD3N4JTR4yRGv2aHVtgMlAotb2qE4DSSDbtJBdMDU" + 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