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-0673421598-gov.washington-edu.pp.ua/post/2975068341

  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-0673421598-gov.washington-edu.pp.ua",cType: 'managed',cRay: '91ff1fd17cef6fe9',cH: 'bvU.qOgjDem_5Kj7etmfIQzwt2XalC1eGBcz0BkEbH8-1741906583-1.2.1.1-oHDzAxpry8dVeTszCB4LZbYAtY.y8jb8JV3ctS6vLyWlm2S4fQnMhaTUAvEgZ_XT',cUPMDTk: "\/post\/2975068341?__cf_chl_tk=ZMzkysLunLZKm9t9wAWQ2FqZR2SQka1f.A7ZTLFqLGM-1741906583-1.0.1.1-MpLOMwPiJHVFOAw4vE5u4RTROJKEcjn4GPZ_jr1mTRY",cFPWv: 'g',cITimeS: '1741906583',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/2975068341?__cf_chl_f_tk=ZMzkysLunLZKm9t9wAWQ2FqZR2SQka1f.A7ZTLFqLGM-1741906583-1.0.1.1-MpLOMwPiJHVFOAw4vE5u4RTROJKEcjn4GPZ_jr1mTRY",md: "Uc0KHzGvPqhiVCd82Yw_P7qe2ISkEAbC7SMg9Obz5Ig-1741906583-1.2.1.1-z_f0Nwp9jEPnLNZzQykZtzuUlrYuESW6JeppMHxPBi25couFi2NGWZNFqjuOWNREoFE4HaypAh_3ToqpP1HUwSLL3HSt8xHn4pA_VxnD8XlqOnKlFzii.apMu88adK.WXIXRBJAkEMJbLd9r6K.F1Rshew_a8kxG7N_fBubV_GafD_q56WPPIAKGtnTMA2QNjwu7qsO2qBJ3v3_BeS0MTbWbPqGkutqP.Lz8Q_e.BseDOpmfCzXNlsmhjVpy.lES6ELm3CCkdCEVU9ugs7zzsQykhsQW_wOIUIlZbeKtLLhY8pAivSOD.lDrpObMyZJ8wEGOLPRJQ95XZA.8greDT608lDB0p9c5CSD3g_JzeZvExTt1MPJ2JgcwbhWRfH1dJAP5_skWaCpofytZWz_qxpJOQud5JUDkW6bPIqgmHcmmscpW.LQyDHX.MNVk4AeXFcVs4pwOBoxlMNcKuefiRNop3mYPtEui4izTBTHBuPqBjSjh0sbF8wCQg4B4JJYoOqvNmJg0Fu6EiLpiyvS1WulYpgf9O_7NkzRiM6roIBVTfMLG6jqV8jm98vPa974H5RbF_s6eVrEqcDlNq1qLRvSmYpwsYySiA4rWahVzcyqtWUTpG_FD8_ZNFMF19FDuRxx2plp.Tv0pw8o5XFsuqUd2oJYFn2HY1X2To_YBnyq5UhgpwUXTNClelWr1EWK9k6l8hnJBC0mBEqJKEYw19f6DrFaKo6fiWQsyUza7OF8QCXpsZrTXeTDCcqrmjPjBPvD5w7nxua8YLPcxS_7abHc0qvnMdlmURLnKwnP1kWnSvAfoVAzPZOUMVJPs7F5.dTcw2kkw9DHHRGaYXBkVM26BXDK3z4YsC3KuACSbglABfM5YYYkIyWPJxHpa.fKULsTcuwuKENTIpTrf3_zqTC7UjbdX9.DSZG.phZzqBRQegO2wguq68oLvCNJnvLCzc6oD4DWGIkiKM01059QUfA",mdrd: "tqibNnmBhlc8PtEdUw3aS1jtp_SdRs5smkwd8hKg4MY-1741906583-1.2.1.1-YuyO3Ecxlbi67jYQ.oBANlQPNVthoQwTh8DllJzOVjbiylRZJ5CwY29_cKDE7TK.EWiFWbBL1ntL9ItksJUrWuwIaaBOrur8H1LVglMprFhFRzbKrPy3yj0k_8P7A8SGBs1_RBs2DYkFb9GWL23bw_nvW7z7Tj_Zef9Uo7RtwmgnVfkirWSDNOIahVprvSeGy_UFXUWk81nwW5Z6URgzXrYOG53d1r7J_TEpOVDYBSyNBYDMF9UFj5IuaFBEl1WulBmSlbsBiYIfRuHDSDFdO1s_CDeGDoqUTfQ9fI.a5_CmM4zluMyss2XsNbdxHbMjvapJqEF91CFRr1OcOJa9X_jQk.0x0x0C1JEJjI7LX.ca0ebQfWfS5wiUTFfeD76utrHt39dv5MQ_YuyiSaOe6Uy8GNRzBs0FyxB47ZhyknyupMNydgMnw_y9CeavTw5qEN0byEJ_KzNDdHUijsnNn76Gv6x9jbPdfxh6NTgM6iiQX7LXyd1Mql0PiXmXLxvZVsd9F9YHYjIX8_5tW1bZocfozzhOoN_ugVmGUX5z3aSknVPLQ.hSEFcpov5Js9Sc2eaKswo3cXjVMhRE0cvTs2bOg1dF_SfcrN24s0cMmlPMXuubXBfSblNBE5F.4QhEOCwPmBMBp30ZUVoHi7IJQZpS92X4gqze7WqN.yTUqivwckPRLQTyFB8U_JRTYpKtV2l39gY.gfRAfcvKqK4wRuExr0JV8SyHJpQOZAe1d9YmZL3jhbnUON1A8dBDn1BUH2Qkb4QDG7jys1GjBCQz2Hkuo56fQcfsjwMn8lDGqAL2j4YG4iKnVBj30ww2aVIAAqbEzXhH8rOQ4NxrXvwhBs4afl9KGQU797aNF5kOdzmbtZu3M66963pQGbXougOM7WJCiIHLRjKtuXO0t96WJUDctzpA.1.Br8qtnmnE9X.e2shwStUTrHDB_ghkMWzvvOCHFrCb9djoSNxemLlzb.YWwsQZN5cPHtan83Ns.IwTce.YWHJQ.RVIjYp_4V19zVPXI1qv33d6qnSRMOcdL6s2u7W2jeDhDJFouuadVKx1Gby4IyAOZRgAKQ18TA9hQz.OaLmpaYRSBx52pD7RY4JNKcRtgG0C3ayeW8NYh0SQ9UNwm9Ye_xTkxqm1zoE8.8E4.aFup_oH.c6l_Dg26.n6r3rtKlnbxX83kiAfNkgkVp1MgLdW6NiARPN.Vl28j9pvvBACFGJvbS9CtLm2rTLQCxdPGm6aWozV3gEFCIhgYKY8I4E0RV6_yHhMLBxYBK91b5U4KgWAGubnYdAu8P70nAyeJ6dZRHasuOjRlpmxlFMlmUSVBl7Z4aKJP64euOKbrK4jrXADZDcL6Wn4cVQqRCqZrJLnDdU1eyY31a16KYQOeSmdjaEdiLwM49CgJq0L0WmZVH6HU1QGxd8qPP3PxDUnla3qNm3mpPFEZEEkP.F43vbDKx.Ph5hs4tM6rWURPiHWBrzt3dVWgDYvB0pCF3m7yCBEcTNMaL0UpdDEdxn2y3j7zXrNjOSeGkr7M9m14cjmByPXmJZJA9PXqiCj.8iwdfkuS5XW26aGPdoqUAvC_SMXL2wJ4HldhfoisvcEBWtzqZAkxVIuyAZ9QCr7uzA8egKV3h5bK4gAzE6lctoOZMip2PujkAXbGnTMIaHe2UTXmt1a243RY92OudOnmACiYYc.kZEHpyBa5jJ.wRVWCacFeMlVjH8TY6Ck3NZAa0Pg.z4eCtF2cxTOVZyqhB59cZF8jPwIFntGjQ0IWkM1QZRklz38cO5rkzwkTYBOXxWc.K5j7uAscjoOuJ49p.lQGcU55gzko9n0zf75QkBTt3iZLyWIK3BqNBsbB5Z5gV7typYZAxcyfZJepBuqvJWstzZA7bo_Sd6XlDJDF6gpLaZ7T5EhzD7hK8lGGqxZXpDWio0L_fMJmZ1RLnYqDtyw7iAzT0IuPUMCN.Q"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=91ff1fd17cef6fe9';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\/2975068341?__cf_chl_rt_tk=ZMzkysLunLZKm9t9wAWQ2FqZR2SQka1f.A7ZTLFqLGM-1741906583-1.0.1.1-MpLOMwPiJHVFOAw4vE5u4RTROJKEcjn4GPZ_jr1mTRY" + 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