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-6134908257-gov.caltech-edu.pp.ua/post/953932534603

  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-6134908257-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '9100ff3a6d4ac94f',cH: 'ahL.O_kUmyjvvCzCqoYjddxLb0FKT9W6bWKTbmfUycE-1739241865-1.2.1.1-GFR..Zyh2koQxex71X_t2gYuryOvMgHbFZ7K8uF50yscsz_i3wJJHHwfLscx0n0n',cUPMDTk: "\/post\/953932534603?__cf_chl_tk=TLOwMdyOQgkfveBX6MTE6VAkTSm0KArB1h7XidQ6DeU-1739241865-1.0.1.1-5EX3sDCfsG.UMMNmZPqkpHEMBsUyLGl0k0MQfdrpECY",cFPWv: 'g',cITimeS: '1739241865',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/953932534603?__cf_chl_f_tk=TLOwMdyOQgkfveBX6MTE6VAkTSm0KArB1h7XidQ6DeU-1739241865-1.0.1.1-5EX3sDCfsG.UMMNmZPqkpHEMBsUyLGl0k0MQfdrpECY",md: "imixRcNXxhuapJeaZFxcFTw0wnJv1EzlcAY97MLwmhw-1739241865-1.2.1.1-hOSOm_VAcL00NP3Yk4C6ygdiX1NAUpjpv9tA6IG8aynX8rvpMK7QA5KosvJRVl8jN0vNIWlqPgXR8vj1dNYSayLDWB5J.fA3VLlsPg8HnMaFxcji1KgHyi6HCpNMusOTWKdXSrKQYKBm4M_lIO8pkyExSo6Fn7w_e71_Xg6l5Gl_STJ8yHZ0bqQTBhf_P8Dashn07QSfxpVojaKdl9wfSpf3ekAPSYdhvBe4EtN6vgFQJQRdu3Fju5ioFOdfo.l79bE8yT3Q2XqhyjFTNu6bKB.shGH2IeSrsNDgLZimDne22FWtzk5gRKnKP2rD33tZJeUm.i0EstGnoPMjggo.1K8kXOzJMl2FQO39QMHFUQb5ZyoxNBtDVHkOiPtOL9U8ondoQ4ZaPIjcntxqKTalwae9p4vxhZizAwxKIBQZOxmemRx622V7mqvrRsDzWpU6TgdpzZZaWGD58ld3UXxEs4dKVxax6qvw8aCN4lsBs4dxGDDjah6fKaAn8Jw4Z6XxziWqnpetpxLdv.XgnBnYRV_w7QLmUBfz85GjKbEZKv0QaWzWerlJlMVBDWny7bka4fuJM8xD9GY_poq1uc_TfM0tKcn5T5YNBPoGg0ruIQi0rdeDT_5IwTzxmvHlkOtOdGcrP6AIgR60gc2.Z_NcHxcHKJQZpsdD0UX7D15X7TMLm0u1eMG42DRGcUQmEEMp8oZ5AZx1INn.HLD32c9QbasF5S.ZpgTmJlAwUNa2P5RSiu169UXiY4W9ErzpZAkVhb2EZ2PbMfEddjPJ..3QVlHNMOY4V7z7oX36iuHIcQcDFYZ1U8I5iN0XHkqv6Tdc0.fQhpvgsaczveQFOMtpfujTwMV.ufCb3TVyefcWwSYDhrtgsvBGXyzHIofrXmf.gDKTYsF1omzClk8Puqyp_AMEZpLuf9JIBxRUMG5UYXPZC0sTR59SFv0oF.VxOIJrw_Mg5LL29MUIOl70leTwo4_rYguAXOQobmc0Z_7n5hqr8vaieJ8rugG2QOuvqWWgJTU1wGyQGcflD171fuvmnt0vmscgoOac7hOyw_sxedGfFmuKz0qnUot8ML_b6x0Xj8GnG.qv.KGrTgVd6.bUzJ70f1_FWE_LcZ4Erqy_0BzHuf7WeE1d.5J.NkhsR_7rSjsRrAqWiu2lrincMhLxgm6hRnXAGa3w3mCptysx9.nPAoXohVm77qHR_VvdyZywpc6HzvOuTks7PMIfEB_Fk0PgVwAkNuDA9j_XxqxCq6gxmD1_KECv5s.GkJ.mw_PPYHuxVUjvZTp1UPXlTPZyLZEkpDhvfxxGBty9ioAoeGjB74lMCx597gIRSTGSF03cKw3Hn1F7jX.gDvNx0SHR_SODmRkBmGE9xo2Y425YxVIRqNfEreNx70QudXmJ.36eoI_hC6wF4eFspvS0vhcULfwnEcjCrt7gLnvSOx8d6uRzv.YeXD1axLCWgJsd2mgjj9Ndk2Xe1ij3nBGk7g3.HFcpseLkdEQEeDeggY6POmFU.PodN1b5xPBHyeXLlbAxhNXW9vEFTx05so1DLuzgo5409jWVrI05eshOZK06rSygPbydp8.WR_9iXJ6Xf2rcZXDJKoDNSZGftbDde3kMr1dxEdtGhBERZ8wtSKp.IMgNH8iht5ErvTBEwH4A0RF_JYYexJOChoO..x05ErgWIIVgI9JfKR1rQ8lo.YJDyWX8mbybNa_YzSMDT0_CVw7A5_8ju4fPPWEvY0Ifl7j2pME9NAq_idydGklVmP98JACeob4QA65SvSDbqRd4lO8ejb80kDIl1NBIn0NsH0Yeepb5Oy.QLpVbBh6GCZ.MY3DpT_QRG4R9LXvMuOoa.m3QXlaI7A2en9nJv1AIWLQPaYFmpoUktIwOhxR7BoZrxIiU5X_Ldy3tXoGIl1kknMmPIiOzQp.vRrF53f4OKjsrojF.fxZHQndHdNOvdSRJZOFgwO_q5s8GjtGGPvwdP57SAtrnOceCcFYqYnPuAshbHEu1YHf0c1iq_3t3Pmgu4l._xZ8nY3EZiKa1gUl_f_R8Q4BXOvN3_9noOPTQzz439gfsu1_A5FtR2qQua7jmnCcITmH5jnDv4hbKTsiXW8PsxDmZxGR9RVxZwyajyH2pKfDsiZ2fxBlW2hs9g3o_1Be_osQj0Ocr15e_y8rkCrc6wCOzJ_YZHPl8.lQIIVVYqrXrpNOmxVOD7ltnbSK11XDUI3KHI8g3t0xgcdQrzp5IB4SG63xPQt.agNFLzJ61oQ",mdrd: "zBkNnYg784zBpi35DDe.Xztek97MI.5p1E8V5bUzyLU-1739241865-1.2.1.1-iGULlAonzFyr2R5A33kdodWr7g5KT71mjWCdHJAzxJqKYIFwZFi7kmvdzQFklBLpK_0AFUOVULj3BZfKYoQH6wNA5VHE.VCxK51RER7r1xBcX1HMwpBNkTgMalPK2Q.RjpcqnDhL5Soq6Ik_JqedlvNod31n.2DpupWrNtlvQONsR2tIO5VVW1PAvLWNgBw945Nu8aryl7SpaQud8uXikL56dbyvq.Hd9Wp8BdeB0rSNHQ4XcRTOVdj.bDMmI0GmQ0pT7DYjgdiR5tF7ton2P14IeEPn_X_IaKXp3Qk4ZHF__PuH8ZEn98lirDz9aa9EJsBJHONHdcxeggLfMETZ11nWbDsB99H3YOF0K8fkgVtbRmttKCGgJNodzpEeNDo1dJWLID8l0WnAF1sfxgIxb8tmInSEpHjtX5Lpgzh3Q5Jgwavc2wiyeh_Ibyk4AggeFK5xZ4zI54rME2Az9GKNgmXubVmxRGXkkEZ.ruqCLcP86l1KFD88cX8cJVJSDV.vJlGNThCVcLffYvMCR1pRYmlAKmQYnnZifwVJN8POU8qWh5qXA_9w42pxwsZHbCDHEn0LIIhBv4TlUH5OAPC8gIJlKaXLRRCvsXiIyzbGk5rAQjwnhU5TAukoF5nb5HGOtvRY45GaoZqh6yryt25ZGHzX2HuBnQvgNNgDNj6dBu9sfL3LPZ0tV_95bBh10jXFpUngdq01.HY1_X2e0sxwrWPJFl7.7SkpH_9VydFvm2w0LWRBqjXfzRYZDDnscWRR_W8Ay5hMDYhW2BbfmaSXr_epBsBcET3r7a9m1W44WrCEropj4p4HZZ2D57CZGMN9lLcjKYWovTEg4TkYNDBHN6CfYQApDVEzt4F0oXGbi73XnaBwGQ2E0vBzbLJHqvHfuqoWl_kA4Yi2YbsH4Dc2irglYduD2PFEaUQZa7My6h6PX3oRZNSmTHXmtZpzTaQEmOpe4x8Th_siQL1l1wKHrvbWbeJHLVlIVmwGEkF8hx55GQS8ziv2qnJFS45Vg2D6I9fJslJHcQLgE24nJT2RGF6qJC0g1.7bb22fmDGLE29UVUbLvRlV37ZGw.z3hUCMheKQ0SFyBY.hd6xizJ1ORyHhJZR8ljCgNJgB9NHgMXhPm0RPBJ1BdLKrzaUVa8z66DZq14rnTpiVBJsBfM8N3GSBF8xhw_wRR_Kt60acpkMljdmzYDSOl3By.aD1wIqnbXDK0o8H8DIW4U.Ae4QNKaS0XICSv3gH8EmOQdlWkFj5vCj4G.L4ghTVt7WFPMrxery3FeNt5LCQb4eRlo7.GJ5pZgpWLmwJ4IQsEm.FfLY3UpHEqdPBQoGhU4cI_rjw9KFWN1uga7EzwKTbLddMelOxYc9AQM3ZmayrZZRAnxJY744zH15TkNxHt2yYdMKUFtfUkQpmzaUlNvCcgRgwQR6PRrNHTFwz7RCokNhLyLYQPBUb.cufCH0gQuhmQd9_FoYmp5twC2vFLXM.PQxM_yFW2n1UepUR_oac3pDOm6ATwZW3yrkDEdZ3yS5HTefiT33fn9ws8y5TvGomu3FS2Dnx29zBTo89X0DnhpSv4DK0cM.UaFy1StKzWM3SFegI1IEiEQf1gvnZaBZutulaZ2Tyftw1j_QzPFxX.i3d0d7GEJKnYSQHhqIiOP2CWESvEJFrfVGmJ99jkCs9FWy7LZ328142C37nq_pH7iEUvpjGR4B_F_Mhqig0wk34g.D3mATTHaMm_L_JlIApkq0U6ZZcts2_TiUfITBcT.6fdn1GOaO6h.5MB0xlDBy4GrzQOiVGME146yMp2tkNJ4CsfcB5priGjBjCs8ZyYrnmK4Hgq8OZTSqyj1GceaxIcKmJ"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=9100ff3a6d4ac94f';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\/953932534603?__cf_chl_rt_tk=TLOwMdyOQgkfveBX6MTE6VAkTSm0KArB1h7XidQ6DeU-1739241865-1.0.1.1-5EX3sDCfsG.UMMNmZPqkpHEMBsUyLGl0k0MQfdrpECY" + 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