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-5078924631-gov.caltech-edu.pp.ua/post/167456116080

  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-5078924631-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90fe9d485a2105ad',cH: 'QREp0THGosguI2ze7dcu4hQyVf5HlHNThYCZwOWgO.Y-1739216881-1.2.1.1-NkZ0nLJ_uuZxd9m4iQNPhII2p_371cgQzLOh0zpb3w.M5Mt2lDm_k6lVZ4dGG5Sr',cUPMDTk: "\/post\/167456116080?__cf_chl_tk=tm7k4H9kzsVVdU5316t.OXruGITQ.UWyvJ2LQZ0BI2g-1739216881-1.0.1.1-Z.f0M51StmlZvq.pf8B.ATIOwe4i_akZZIe0WSjpHvA",cFPWv: 'g',cITimeS: '1739216881',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/167456116080?__cf_chl_f_tk=tm7k4H9kzsVVdU5316t.OXruGITQ.UWyvJ2LQZ0BI2g-1739216881-1.0.1.1-Z.f0M51StmlZvq.pf8B.ATIOwe4i_akZZIe0WSjpHvA",md: "beXYAMm149QksmKnWngN_cfho8HgtNU_J6FkNo6qxTM-1739216881-1.2.1.1-Ch1Qe5GVQvAmbeR0LPrxInmQFMrek2aZkmDk7TCgbDb061qs1c3ipdDveGgNwW_YXug.WZuckR2GSEAvyInUgMT_9Lty5zMQreMPwpDLspftVQzMXkBiI75b9FO4YLoqk_xi.yif4dURxgDoXbcLBwem4WGKzpbH1sJvUFb471rsYugX7i1iMnIyr._eGNXMoISHbmMx9DGFtdha114qs_BP3MiVCZfba7NXEvedMHmkjw7Vh6lT7xJQWxIXR_anqHpT1HRmt4pXQM9E0Xv.HLLzMQdkrZqndk2za9ely2Rsjm3TrUN5hGZf2sYqK25srlVEeiuU9ZQ166oywaPEUAjcPmFonlMZkKmKLBVT.83QGtn9EenawOdYO_jOneYiFK9o1y9LHiV.sqFzZrz57e1zBAJzdrX9zqUUzh07IvRqioPL3TJtDTW4UJFYMeU8EvymbOlKjH89bGmBOo7vdso8FAaf1AYWBkKoe7XrQJjao7DJPvLfYhKZtHHYbxDWfFFGzz0iTAkX0366tHtC1.0zDyrfGZgXPvv324nz.vEA7LPGn9lgkn4D6tcO3bDKI3omFO5qEZdXGkHCvkgQbLZ7b4o3WdVU2Y7eHkTIarOzpyZ7_f8e2bKjzzS8ElwAhjOx7s4B_7dZCZYzCxjMqGwlw2kUKPtwPCX3secx0.qgthr0CMFbPvoHrwdjE_BMvJrOSnzGxJdqkWhgV2ZO_AHUyIAO4nrWmIsyO08C6ewqM.jO88PePzfrmmDp.OYs8YarP6Q6DzNrslaa7bmWYv8AbQiAtPOwSShvuZZa6.QtgthqzvNyilawpXOPULWGNmnVLa6MWemYgWD4KZdNEkwKk.UVb9R5LFuvonsqxpX8jrXctrLiifdKAlSPHhWZbjM.Hdl3CpBMkW4WxZRzF0pMW7QVYrYP0K6EziVik9Pdxn1R13RSh1NcZY6DDYsdPEO.eGkuDv8nqVErDKhns4B_88icejc8omvDLYYCL.1L7OKUFYnGiAqKIVxGE1N80OwQlVf79oHf6CR3662FQZfWNP8NEitYm6Hwioy_bHv8l84u9E0qLKla8I5bkTbyMZHdT_qj9mCQ59J06WqMthQFMKAQ4xwZy1ausDp1yKPMr8nEQalxUysEgzxmFjBYH0GkW2OgcF4SMnBs12yl0Ayiy6QqG.WDz635lp_EwvLeUy3cfPOmJ0yyP.e5GRotK95QdMVcVWZK_GkwV.VYqyu30vgZONMDRZ07xX5QND635N4a.PfjfVyGoAQz50HffZGBQcz0KODRGcJKrIaSZrLvRVK0.fv77FC6SwMK0o9x2CGS2GowrpjBFWVelY97e.py9FNQwRjxHIr0KaDoRYt0tccPZASutxR83sjY3A9DNYlMFN0bGbr9B89jnby4Qar_PVTIiAniVttQgZZyqqqAqa9W11Nkb6v0iSjHsWCiQd1YvMnpezAZAr57NdMLiN_nIUBupkeZ5LXURidPFUmDlGpM8CZWbPmKcPuH_efNLC1ZrksWuhk.UMSbmI15rug73WWwgslb21YLw34C9EtwbPrMFntb1hqGjOr.1WpuYvmB5WOFa5D5dfLkM2AeY5jBoIpV6kHGHk8K567lhcM7Opoma3jxCSp0ZT82L9kDz9f6udQZdnwkrrnCX4gaNj5xlDW9XDF956iWKdO2yF0KChNR3h1VpZ42ciShcNXWoz2Wv6uiL4gmjZmBQfcX5FENs175UDKD1EvtEWUl2JLAfDO2SlrAkuVAtK9490SfhGPax_rpJOs5bK_A4I0yOLoAfyokSozJEq3GLNsG4ZEvVcojvaYyJyNVOv32NX8Fn.5kb.74c47n4p9HQLksOfn1xcDPQHGpQn1fRXIVz_XRGhWGYH5h8QUSDaYCtWHGRKsU8N7.1ucz7hru4b20QCW1rmpKFCdpA5STxhmAfxulfx5nLvr.dUmaP2pQXFLW9tBSLmaPxUcmIAemOYZHKIUM00fhEvD_QHGo1Pv93D4ayfcdcAsEfbD8DsXEmg.p7Ze._aUB1i6y.rF8cNWByrDIzaeoo4S2sKExA08kLhqRBYxxmdxM.hV7ZeNZjTpNgHJKL6yg3bztgo.ylL9PnSUEUChlIUE0BNo4HTnR4PtSjEYjOR28h1TeCewMQdPh4SxCK7_EfK7p73IwYXsq8xKO0X7HVudyLO8vm6lxZ_AFJc7JoIPJMC7cR6c3S2VOpEeJxV8QLt.0j1V76IUOIiHb8TZ8Lt8pC2R37IfrEg",mdrd: "9yJUD.svBJDY.GO5X9wQG4s_.cqAX4g4RxpTIK0Da1c-1739216881-1.2.1.1-prdIs.NSgUtTVTpTMrwN6fIKotQ_QWu6uvw9upz5yRxyBoHPXYruZkwMYUTYyDHQUeRnORa9aw18apltvJjj5hNeMjwO_5jSkFKJoidOFdcUWVpYxAiIcpvdYALzdlaM0MRUgKzYkOla_QsK0Rl4w_Iv2Kht_Jx8L7SpQSTzpDPvny0pbBE1ryCxZwNEk.YkGZyDgmmImkyNGjjcV6HTiWNz5_9sp6.m6EBttKBzS42PnlE1QDgsYLiHNskFS7Kb8M6sAqrNRnDKTK.jHiK9YkQPk5uYVXcMtsPX1EvLc85vzmAk5Rh7YBuYqJWvjKmdwI.U530jZ8EkFdiND2bCeO_xgw4jZK6kZJfraHL6K1OEgik6IzyEbFgZH8v1tRTQrme2nFT6e55fJN2mpEKglrw.R6mq2KkENBZYkD7TQoYR5WXbDBKh3L0L_3iZdFNKOkGrMy02UpWazBPXJEnquQfmt.HRE1gUcJHddbLE5H_EzPsegssPrza20YsEbH10MTW4VrnIW6J_ViJEs2cyV2xXkoeQjVLl5wmT0Ci63EnYN9YGlf.BFbDAhFlQNfZdKiirDLWu0N4_HtHzWcz2CwiIml4T5gLsPMOrpGnXeBAn0rIXbTXe7DADA_X0U4vJK6m4bHJJJisOq7qaPrgcVYIytlhz_J1Hui7FlQicGLS7m8wyXImyy9n4CKFtfL7C2Taf9Dur6r_t45UBoeT9IiQI96_LiPK2SnOJCwH1Dm6fv7zQaon88FynydD84nmlFIfmpKag_9zPkwkkyI1Fy45kUhtiSbVuo3NLOAk2h6Y8ZojHxXntK8cP711r8hmwLJEEIUjhzxyywA1ua42x1GGKBGAgx7GguHyVVxty98UPFLlXIx3ghkjmYrkBzHEYodInnL37X2xWB33S6Pck6jzoyPtlkxOu_6wRYGl5f59laleX.T0i7CgyLGbBkW4F9RywTUGgG5TwRs92SdYdtALD3ZpHdCbqu_vUFUu1jbnYIojSNd733M_hUIj3fTIzaFkTbnLfjEkcPKeSZ_W9P0HHP0j6SRAKcte.ySBSnnQgjH77TSvAhfsK.BcN_giKBFAn7MSp_2oZXUXKvqUI9kgHeRnY0P.Y4zrbSxI0FmY.unieUS1d2OlNs2mFZWaApJ6J8Sqo29ixOr1oGJo7i11geGxx3UKFhSsXfYu_XBv9b5Kajy6.29LFSztmo3MR1B00dP79UiypvRNFNQklckpWVDCATRFUu2FKRol1h5NidWLdHfoe5PHxCUqK7trO.rNAPXhsmiuhiSZoAlWhYSxZtp9z7kIAOZoAGH70gc4Hby6NIl2UbuikzI.PlLiMHia6LJd2A8xuL0NqqeGbZPl6l6uIwKnyVjMf1DOToo8g5iK9OxM7wcPNFp8u1lJ6CMpYKB2wSGj2c4N5mKLKM.4DRzrhS.DGiLtlpLzZizXyoP1rrSsupKL8dWjK25Ffy7Fh.MDCW7SqBCWJlflikrbZubBN3SrcTpM373mu4wA_CVjGV.odokTps_ScjY89VHS8La15ycI8J7Qip9BQMbLxQLebQRLEMu.qi50aCF2J3tN60oqLOCetBbm.FCS.7174wELpDXb55VduvX4q5C4BMR7Sn8dfkNYeBloSaN..mL3MFkmZMrz3AuFCze4s8q00z6oOJuXzAfUJFVbxyHYMaS90pWCfAx7IJpU8AYzdXCOVxn.TtgGaD.xqQr9ZYK4hY3lvcq_T3kMMkpqDdXkFBXhsXHFrn2Oxpl3WEtnnnSKYgMyniCrJv_KTPDsyUZAvGOcaPL_VuIjH5e_Kj8FNSU9ui1TISEx40YbG3My3MvykJnyThyiEwGydQW7a"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fe9d485a2105ad';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\/167456116080?__cf_chl_rt_tk=tm7k4H9kzsVVdU5316t.OXruGITQ.UWyvJ2LQZ0BI2g-1739216881-1.0.1.1-Z.f0M51StmlZvq.pf8B.ATIOwe4i_akZZIe0WSjpHvA" + 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