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-6489731205-gov.caltech-edu.pp.ua/post/932025629844

  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-6489731205-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '9100abc07f5e7ffd',cH: 'VNj_3QHgVdPrMjXW78GfSXX1vZrKSzUY48gIWJlP0ac-1739238446-1.2.1.1-H41EwEzPr4wyZWQIZGn8w_pyM.PSY4sKCRr58kKUtdxVtUeiPvwIS878NAHBCjzS',cUPMDTk: "\/post\/932025629844?__cf_chl_tk=5i3VO4Op7cGzMko3wOvhC84iM_ikN72foF77Il32Qgg-1739238446-1.0.1.1-B_acpDUd4HndJMZtMJWw5JC0IWedqu8ylRD8sKFesdY",cFPWv: 'g',cITimeS: '1739238446',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/932025629844?__cf_chl_f_tk=5i3VO4Op7cGzMko3wOvhC84iM_ikN72foF77Il32Qgg-1739238446-1.0.1.1-B_acpDUd4HndJMZtMJWw5JC0IWedqu8ylRD8sKFesdY",md: "BWdW5h6KfOXQL0x0s9iZj0xrsk87yRjlZneSG3OzH.U-1739238446-1.2.1.1-s7NwVSTj7RWYAuF8mHWaUpwSPCE.Kd4BH66WS.bavz2UVUd5lqVBT3yvBU7BKINHZxho3D6.bl8HENc6l7KfUFunN1Z7g5ytAevlBMKoHwZMEe0FeMu8MKsIZVT351wF1XBIUQ_UKXwlU_XwfWE1oTpY6022kRZKHkXBkhS1BHYhXnBQaCNs1Zx7nOmZvve6tiePc9PngewHpXV_3N8YyOZ79TwG2yd89jpnEs9iz45yPtHwpKCwhdyOhVj0xYaPtDeQ6A5VD848ngjgQfVF33vHB266wiLnBSnvpmeppbaEsJ0RCe4B4i7QhOT.quW4PEgSyHQjvRCrBeMktxMkLQxRBClyWpOfoK5_yKMXOmieP9KReDjiGLz4DN1MEP4qoLdMy99j1EKbcDkvi.PvUHBRvhdv92NyVPBdfQZpcgi.uC6jHnZw5pjK9DyAmgdXS1ydq__564ZPTHyXsNHc_nwHxPaZJCFU.mdAqY3doVYP7KRJijRcH0qBS31yIWGNuXGEI70HDACADy1dfJLo0TPYRP6Hli2uH0z_FPnWODd96nnVPWiUOx76m0Jfzq3a.UdummMMQXjrRXsEQlm9QFfXotxAg6NlUoK.RB1qebrTd8hLlq.1lN9Q232V684oSUNpwXREYDyFUaYJz6qj.i43MXwhtSv9CjoIxMFo6LjwpDdMDhNRY2npfXzWRjxn3QJY_m0MGB9HDP0iiv6aTK9eNVv1Yvvg_xvyBABOlM7pFQgYPNBMPrXv_3IAVLMNNYeW9XZNpqhdP9SEjXL29Tydm3mwHxsFjTXTGi95x2cEud0dxrPtGc5BbfWf8BZXXUlrzNMbD3yRSYsAz7S2p9LP7bInF3LEzcyoMCMZP8gRsxelpGudPgtfJyCjP9eHZUcLxPh0LwEwNa69IOogJkqf7HPD8Q0EKtcEOdTB_J1wKjq_Hj5tBQiQKd4jkMdwLV.rPKBMOpOM6ntKi_XH8PdIxmym2lUJ0PZWjWsisMqAO1XQqJ1JELvKPnKx_EuHJyzmNT7r6jMm5sCHknEpdFh6fUE6AwnC_DWwWwQN0dPUezeUTDHQkWxmyFZ4ZRYVsaM9j_5_kh_I_uVvTXr_3hf11oopebSHaTGFJl0ffXQRAqHfZMbqQQjBPESqJWU.TWFRpJIzFw4Vc3oalGGO91jyYUfQ0bMkGk0bdtHSfo6zJk0bPchlOSM2FCRPBPa.O2iW5P2qNmXtQWzrjMblfuGo.HT78oZP709FbK6mkMowmB8OVFpwphFmgabqIa2TXsqZKnzjiBQ2RzauDvljwrUNpfQaWXQXF02oKFKWMHbF8Qm7G9jNdw1Q9x.qJH7cJ_ZikGzOiRBRpJNRldUzszFp9PBrDoWYjmvjbQUKDmQzlpX9wc5S_silbfbwCwCsOJdPoGvd92Y6Mu1YRndT70QCtfS8GFKdQj.rMEwresD9tWi7lrca6EXWj4Wtg7xcJHzFtAHoj.EMy5er1D2o6YQbWr81xQTeUWkhydkN1YmtTCA7x6gDFCKxQ5qQmpvkmSsZ34SaDh_WY2KkAKkSOYVuc1xQmh0nNO3ZcCk1ZT4ZKYvmGH.b08Pc6n2in2ffETbe4iaK.7k9IPd.1ZslHFSkp8qxLNT7PERB2ZvKACpsnzWG4whCT5rzWSdrnl3_gWlNLBj2bK4S2F6eCMwEZ9gR3OqyIasqux7SRtv1ExAcRMFrIqgwVzGgLQkJqDfCsMtPdU5Jr_AJFaibR.GiMptlJH_qBF.JvKwRyegmcguhm4RrRl7adFmh75Xd3qNaxJDHqIqFz0Lo8UoZiAh4njjLyrHyH_FKM2sPNM8LKKordMrcXUkNUJOsjId1FYQoXpiv831Lz22d19YbyVCzMiUIRdXbST8WsvDajPJFBKDQKcW2oztyMggY4lUJh_NAm0f9FReI4JId6OVoTkijZ_3rcjgjnYK3X5REug1Lt7KmUc1US_hOFGtLNtIB68WZxPpICYrNvrqGsu4U70.EMI.Xhg.xQwEY1IICcATiN3EPALlgOnxY.mE6TplV2Ny9QS76S5l8molCIt8k1GnQsBFPAwOPPv_XH3XQtshd44J5yYqmN7rK4zXGJ5_rSqsjm0MgN8wFnE1reJ2ELZY0WqVHk2iD8AW5_KCKdDeao1MB8mJdEeTEoOgRH2uyfJszTKoxjyDukiKSumUb1Aqv3r_36s_zIxB.jNwU5.bzUKZ6HZKNTjTWrovAxEFir3d6EQAnnSaiis98_i7iAC54Aw",mdrd: "sUQcTTyJkYx7iB5_EiDH_PXKg9Z_rKK9FVTm77jEyMo-1739238446-1.2.1.1-vbyyKpAoOQaZxWofk2l.EfLfIdN1S036UjA1zMoDZXFBLwbPnkztNjQSMd2djHa0V0pgIGcGFscQqdEddYvrW5YToBK47gzygeq48kagtiVUEV36YBS_ToZluPLNBRMlF7PnQ2RaSlnrkN5gR.VoS5dTIWixuVZSiaXGo1DQiCuRASbkukgq1lhGzdwrkEWSRJ4fyQ_YpmWj8G00Ht2qOCX0O4CUNNBydgTjVG28KnPSz6TJ0iZjvtBCcYjeOKY0uYOqv_8aPd.A.YUk6HAhOClR2QjkwP69bABL9zO37PoVhWUWWwwXSXtmuZTJrRdmbAPyVmYO01i1PUbX5HJ8FB0Nr1zXkPgaCba3.Ml1Ic9ldJd0tJdOIUIanuNjLei7cGaz.USYespFblnwbG22j0.4f4a6_HhBJGJpQLX0iczyR421AgHVdu8nTxb7ggEqwGfCwomOI12sbCsqJMG83rZlsUyEZJg0ycXSA00o1pgdl.KoTwLhe6en8PmC4fwC..V_rjLz82hVdFWDoZcpc9LvivsFeHEG.72RIKExJjt92W84ZDjZpCI9ElgWx4WU7NFbsJw20swLJXc.wEqiwKD.bC_fTtNtchuiMueXHmbybcG19ajfCvGNlvkiGo7AOhp76c3_DfVIdsaU1oZygZ8h8WXkFZWV8_0e80JABaLBVzzRlG_xDesGlesXRJH0HUYqtGaKCcFj.t4EFnxv4B.qx4mJmbvKILpOQNK.9q6b0Mo2fX3GpWNM3RpGknqTuqFOI0VFp8HIbVEtSmQLND_kzlwvwdXP4JH7sg.flEzvKyMsV2PLOQpvwr4f2Q5DSjmu9iFdE4xiBBlUNeWZoJY5N2.yXZg97VCHgACnAaa6SzHbmfJEcW8VnHZFWjnNOeQnp_D6yRW0myIBE12RRPcMT7glP47qYRzLLViFvigFFh64iUMjYggeVbNap2dP3SpVGJayUx0OzW5y_QtPl1JWfG9b70bx1ehmw9Bo3DECRg7g1l78McArOuqYoWuvNKnY6Hi8Wy7c6QW5WC9Fyi8Suu1CrgeJzZ0fRwIUCZg9rSoo6CiErYLLlSa5Ie1OX9WY90zrQwU67icosMBAYZV7CBDJBHjGv00Nlhxt3hBjLX_ttEtEc5zYceSsTxST_ILR3Q9l5O_gyByQ.37WloK7V.VP186huBLZ4y3j5.dRW5eRjhr26MRZCRd.Ry6MjUe76ANEXu4bdErSj34zkSpkH0cat34TeDIP1jGqukclSVAOB6LwgtaXPowIe3GoSc4ALWRRbrRM61FtzYSRpqunj_wOa3xREndHWtWFRTOwMneB4a4GVKtK0gb5clUQBMky6bbZBCQFnbNP.se3Itg0lR8VYlaVEAp7puM8py_ugZfbmKl_1f6MCsPmdPN5o9zSfSQeWkiWJZEXqX8iFCuq0PBggiYCDNomOVRB2tVwmNpjv74xmEHvkHoqx9.6815sjWLNIqIqAGYSBVbrgGrLx2PL1su7E3miUM2c1YmcZBAorTZGDOBKEpHSOgiqizpdDm2cxpnIoeBovWTwnWcWZzVAkSyQzYGFPoxZmB2HnaZ5RE_9MndxUrQ5bpATNs4VKHL18qRhW85CC0UhyOIuSkAKOTOeCr55XVsGqk7oOL_EBkwAaAxYuA5xeEcdZGGLq3zJrfIZzSxb.kT8YxikQ3jAd.ODZr0F3kTOyeMSQQk9DnIwxHPaGZfUtAkfIM_7nxZDppPH9_ePiZ2qIq_1vWBVxZ27caH.t92AWJ8Wza_7tfIiEc4fXQBM.umRarnCttBx5FZy88InSwTb4Pz3jetBIGj8SXf0w_JT1Ps"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=9100abc07f5e7ffd';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\/932025629844?__cf_chl_rt_tk=5i3VO4Op7cGzMko3wOvhC84iM_ikN72foF77Il32Qgg-1739238446-1.0.1.1-B_acpDUd4HndJMZtMJWw5JC0IWedqu8ylRD8sKFesdY" + 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