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-0816375942-gov.caltech-edu.pp.ua/post/0816375942

  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-0816375942-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90ff9df4ebce820e',cH: 'bsem8ofAD.Mg8PHoVyR9ZRwrC9pN9LPCsEJU0DieaUM-1739227395-1.2.1.1-I6sBweCbIaoc.S_U3YwjpSzkFjJ1Ts_fW7hgkJbURyFvy6zy3MRzqRZD8E69KoTh',cUPMDTk: "\/post\/0816375942?__cf_chl_tk=mldGq5l1LViR1xykSfnGloWmFeVVrWrk44398KWCckQ-1739227395-1.0.1.1-KcvxukTTOep7I6L7QdaaIBbuSjImWJPDDzHEFWtaGI0",cFPWv: 'g',cITimeS: '1739227395',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/0816375942?__cf_chl_f_tk=mldGq5l1LViR1xykSfnGloWmFeVVrWrk44398KWCckQ-1739227395-1.0.1.1-KcvxukTTOep7I6L7QdaaIBbuSjImWJPDDzHEFWtaGI0",md: "XF8V2aYziHRLHOkugpB.NJYKYLxi84Oghy02q1UUM4E-1739227395-1.2.1.1-6F2JC4kAL5VP18XCaE6_abCRcAL.F6XS7ACKq1dLjir_tsI1YmMavn507nijiA.ZaBXX1oIBWhOm9IsMDI5Z2j3Ksrc4dCtJ_Bg6W2c7L3a8SsyWbrnYpU4byJd9Ub9lqk9gIM8MmxE6.6aOp1sAPK9H4qjtomcJKeQ2C0MYTAH.aLAbCiCMBK.suscRWntj5izA4jueFW1WSaKa5Hq3hwvqwQeMj4d41djpiqBBnWw0DMRoDMlT8RcSJcujcdCRhO265EaC09mwvTo5tK3r8yKTqflpzfQQE92WgUyw3IVVU.QWFgEj0ecr9op9dpQWqSagP.N8SiMi0oDNuYJJN98MziyQcyn4eJwyGheoV87PoqsTFNzufeZ5bX2BgaCZhTvMyxWJ4llsJxdH7ULZOKU0DtmKUILWi27tMCEOoTXIEw2vaMAql1PAwAOghbdp9bH5RFitb_H7bTx.8b8MdFZeGiQBU6cIwEkxKyQfnACiQOfmy8aHbu2fVkFqTg9hKI8cfx82Kz_j6lHI3h9cEgIH5JzS5JLOh771kJWdv4jvzx9WcWzv.PJRK1UTc15V4q_sdpvASqB_tSO91SVJ2f.Z6BbIlK4n_CBZFEpM8zMZX9JsqtbUx.v6y7LqBInniizkdriPDuRDGhWj5L0tSRuYDCJy6aqwISsmnXjpF.P8yePSc5XzBdcFyb632F8q5eT1IUs1Xg9JO.hUhGgoof1OCkmfpwWvY84xxXmarrFVwzWYkEOjJNJr8l04AM3xkQCeamr4nIXMaj2nsDVMWrDWPG9xRnnZg71oAO5864aB5T64AqAZpdd9FlUjUrcUUcv8EylOOyLuMUjHZkSeZeFGXglW1lPGzSC__9Sdw75WwC1w.L4BVmJLJQGl0tOcJ1Mq5O0kBONmAwfXsvPSBpPCi6Gb9KBhYoYn4_FhgRuYOLk8T6VXL0c10_e9bCfAGJ.vALuscv5gpscdNTwX316MC2aHu.ke6I7P5xnw43D8_zDtPzzzUWniS9UPhBpJ1TD35hCKFQj.l_j38ePgzQFZemskUmMl6V2WwjQv1UYgX.WZr8.V.U4bnWPSFie4ve6XDi5OoHao3oa4jNZWeuXnyOuWJU1pDEJwH79PDbnOVPtD6ZcTfsf4_OVCs19_u_wcRVXckiIpVZR8jukBS_M6Pbwazg8acpoWW.Q_I6FLQf6ClKQVUGUSJLzwhTcbUqkIe11YOLhIOlRzSly50oX74rt.Yr65ts6AJe_bI1sbtOlAcrerAzA.12Xu5a5ZWWPKt00MvuaRjwzov54ktFPMgvvO5hyoK9ZS.LKBttq0RlSWp.OVXo25qjwnl.ifyJEBKKEGwoIdKcEAbkLOfuInHXjzIl7RT5HQFD9uTsqm.oYgjMBAveSxkGLxdiWkhHgMbdicV31gEXxiUAkSvriELOqoZ3Zh8THOXwcox7vvAgHl24x4YHKuKy8BAXRxuE8sNCqfA4I5xYRGkmSUeuU_nRlUHBr9hUE.6_kyN6CC2w5XZWSw0KaX44lKdi8zAq95r.648Uuus6_qmCiAYr9Oq8ZNyzFaE5BXZxmHx7iEgxckejOPwdreb6T3l60duhdBXwMZZdNZMeAIGHG.kYixbRprvb5YonNRdCOD4bAk.SLNPFSPzRRHdPbIs51ck1nFSvftTDO1cF0NjtCoLjNzxr0GRBUt2e_vvaKOQDgB_yyKumS1Jm.DHcmI7EasGU_iD3z7kAkBlnQPTdJdfj8Y5fqOx0umhnqL80.EF6aSeJyIrIWFR1ecCBj0gQ1BN.su0_aw59C9FZ3pjK89qudrnLpw79YWeRncD6rqm.oPjlsX.xIeZheSFVic_w9iaZZNWGlSAGkgIu.Kck6ahpfnxoJN6CPZwY3LEy9WKvjVFrd7_lkxKFU0hLNGWS3xx3rGhQjr1VqPa8bl.649.YWGmNVBd6P4cRBRp_92BNEqYTrcWeibjc5ONDYkS1orUWhYU8rBOBgRn3pp7nTM3b4TkFWCHd_OhRrh9ByYuu8cgKMBTGSV.CB4ChAINpSWzT_lNZmAMroI10jdK1A4g1WKVi81k0mxgwMeW6nDkybNK9y3unVeVYLaYD18kpu00c9k22LpaxKgIeR3yskMq1uJBJIrTx1Ij99g4XQ5Di1A1493qMuHTNtagbpwNOIk.UpyWl.C9yugiKMgTwuaK__qpAcLuLPL4u96z8sWm_5d6J0t0RHFenZi1ce.CHYqsjB2o1J5dHGBzqmK_ihmag",mdrd: "GgeJYSN9Pgup00n220UAin.PU60JmDOeqSYsrbGk1Ac-1739227395-1.2.1.1-UIhpwmwCipW7JSpl95bcOoWxjQ_3kHH3E10asJw3C8R0qozX9vLGtpoxGjAOym5OVft.NxWZxWsIeEdLWnUktB2GQrkBO.IarDrz6FGjcJK69OXawnUIWRx_nxJGiUhJVss97LiFurX9lGaxFIW8glR21egwbU.Q3qJxL_1Tx_BSOZR3Z4vFPDbo6o0a0bK5FjlkwcilcG6tKeq_l9HmMtLilADjr7lLHJfCrQ0UFtzBfv7_H1j2BTpr4rcuSFQnvzxkCuRqkC.OythEZHPMD6IJa7xjBH.sNRw57_DfvRpCMx0290l7kPFQQPx.PJhlKbBs8FcB3ikrI39TboS41ishMbZK6DYucFY91IwkJTKm5Yl_gUz25sfgPTWMqWHullwmdNICzg38labNqKd605oCQqd3kV_.aXFc144mp1Wu_l3HKvU3USIaXEYT7rkCmYUPuEV_JuZ3UMgyFuBD_luqOxq01z4MWArCWG1_hdMW_bnrSc2eNfg9QHL9NWtA9tHxLpVYAbeUekLgUpc6YLD8zYPpavGHz_x86ZK5CRmK99q0Ou8NlNpoGLkfqL5Yc0ds9jR2N8zeFFCzvD0DZgP2Xu2ZqgyfhIG2cB42OwPbMYBlKjHmeB_J0V2Fr2z2Zdqxztj1.PGqYQYPjgBGZnmPP7B6UPKFHgf5LnCp6.i9yvy4pEclCZJRIdegRzXlsOI3g5pTkHPpUm16VDI6QvEqelr9r2h5MIticKPGX3kMf0pKbN7WjW2PxlhO3E_T326IqQ3jAyaBwG9QBcFSn4.i7D7FoBpRsTfMAdRhOQqgZzHg7lnxGNzdFJ6jMPSFxcONDK2ecwvjj7lh4YAt8dOqNlP6L67a4o3RY7lNZWhnPR4UdSeCrC_UqiTs_zoxTKTW7PcZ_ycbXLrdLzPGiY_G8Jk1MNuYJxGUeY.s4ufgU7_wDBeFtf0HnUagWi1LpYUqglEnMWGZqE1cLz7rB4MkogDlOlVMLZz7E.OBXpoLzoCJ8Js0A1MQscTsgrmSqKHkAzMyboY4iPS8w594QAFtmIAdoDbVSwBT90Ojf5YaJDfHlLa0zwflFUQOUwd55JIciajqf7WtcJcMfNB3grcdgrCbFxhw9Lb42apiAeEASwksDaA0pH6Tt_l2hh3FncgrDWT6M693C3RVAqBY_C1orHmNfCW8OZOQc7EmhpxhvzDwVFrfulIxhfqW2xZ2YXomoqDJ4qeJdqvnvus7uIjhlopO0Z8CXuTnjJwgGZ9R0qNBiVubd_5yF3xY2kRAdsoleZOdb.TZZWun73Aq9nOJG3spKOcw4vVff8ZVbRcEmPUQBUgyKGih6Vbdw67WAOL4ZnJD_K5vXLjVAyKUrSp3LT5GCXM2A8axoLkqTI5q9TtQV8Msmpg1hYixlcLpWNfNsB_CGddtG.l4KFbNDVzSgjOTxULGJMiDUSZTadHFZYa0m18yP3A_zfgSkkQG_bHwaTzoYz1YT9zuRIsVkq.ajt8tDMiwKvoOcthzSZHxKm3GGCXRTk1ynDaRjIKYMDU8mhawgnCng3ihm8cslkfCStzAQjE1E2GybIWR3ylwtDCfa33GoMQIgzKcTO3s3NvkLdpxVQzu1oSulxrkZMALDMQq2ZKnHx8vQ4i6bip2y29YL46ahqbkrnD0v9DHvyapWfWwrTpkPxck_PYls7jyk8RLZeXPt4gf7mrBcbYT064MrWXxN4A0Ak08fQ_e5uRF8WwyMeaexb1fMmslSAROSXa_f2vXDVMOQP7nuoMI.kg0kMPpzJZZdN.IdI92EDT.4TnWFjUhs0qyArybGzeZrA0NE7lpvJ7CX2a.Pvt_p8OZetIG7Ftyceaj_X1X"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90ff9df4ebce820e';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\/0816375942?__cf_chl_rt_tk=mldGq5l1LViR1xykSfnGloWmFeVVrWrk44398KWCckQ-1739227395-1.0.1.1-KcvxukTTOep7I6L7QdaaIBbuSjImWJPDDzHEFWtaGI0" + 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