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-8610925473-gov.caltech-edu.pp.ua/post/064238369272

  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-8610925473-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '9100fb37fb54c964',cH: 'bOUaQw3KGs6X6ZtI0E5BpnGqYrBCTo2K9BEwXAonuJM-1739241701-1.2.1.1-nTSmXj3u4akU4V8i3ndmZMQzlHH7HewMrkWBi3o67QmIUXDm77vtN9g8cUdWHDNH',cUPMDTk: "\/post\/064238369272?__cf_chl_tk=whvQRGtydaEne_xvLkYzlgQui.4wjCBE.EJFYTXIjJY-1739241701-1.0.1.1-r.JLKxi46I2sGGWA_hCO7EooUfdkeAnS7yCMfjtp6wQ",cFPWv: 'g',cITimeS: '1739241701',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/064238369272?__cf_chl_f_tk=whvQRGtydaEne_xvLkYzlgQui.4wjCBE.EJFYTXIjJY-1739241701-1.0.1.1-r.JLKxi46I2sGGWA_hCO7EooUfdkeAnS7yCMfjtp6wQ",md: "_SkebTFswvbCdLOOR5kz3nGQrHyVDVDt4rucxtuIUb8-1739241701-1.2.1.1-yZzpJ.u.jN9jl9JzXXIZ1DjWEMsSi6hvyekqJFZmZ1suKtygrNSuSPXivouyB5XOTFFddRYW5vOCn6mhXRqBpFzYBaV4P5BH0JatsEOTCi_azcG8hejkT5AxIgJZK4Jk74ZIJFa0uK6nggqO3UubeLR9v8On6zKGTZDqxjb4iTZ_5STkDmiQIIqbTXIokv8zP4isBzcPnvSpk5YCDDTwpzgJBo0myQ.u8HkenrG4p47haE3vSVRWbr6N6nZnUv4S.PnBRcDhIi2NuB_7HH6FJE04dE8KbONqEIhXo6wBxhBkOScC_fHu0QD97h5yK1CgOvZeKFb0Su5Tl_R9iDUEda6.ynzJYs2R2nDt7itxhen_.zeAQY1wfRoeABcvmIhvg5lUsUxRZF81sFoM3W1xl48Pd7J68DObMU6rME1Y3DMYXrBY8NHwmUBWQ2y_wd8A9OuUe_8tUzbqwFWIy4wWBRmaHevBpXCwPxfhziwt6LSE2BhSG6nT6WjsHH0CBxT2Za.LhSkzoUMDnvzlWdallIqBzFolBNp7cf1OHivwMWalM8XnGoAewIw1N3w5wgI4HWZ57inakR51Pn8bwIgQAL34Apf_2TKnckcyw2eXK4U5TqzH.Oxlk1cMHYga4mGClDprZX7t2kiLnbc.SrQkx6NwFmC82TxWS8iQiG0NVPKlRhRoajWzwWgWr1f2i4Z1ebaOby.Llo7lCzkvK9MqRu2PaDwIDiYJMpT6Zpbbkh8nXpU7u32HITKbcpo0xUvPjw8DAAdva45.4ho1Pbd9uq.d8somH_3nwSQPQH0KwwH.sbbgZRw34IUCUb2lUwojVWkbBH1Gug_cgn9pn7kZkBu2SbtbfRlqFzmJfSoqTQw41ciDin8xh1AzMY3sRrS8HNlsRaYlY1__obj2d0QVq8Fj0QOsDgy_EOWSJ3x9ByvitV3R9iHR4tsx_pnAbfO9l1ulPs6zgT3xhQKhmJiRbESZrtHah8q9ebVRQvtdhrqNzdMMfCsmeXKuCXTm3TfJX5_yGUc5DuC4BXMlziw36xHQV15ChNz1ZoVlgnT3Rokt90vXfXq7c2CxlQ1CZ.2ePy6scYCV7eS.CLGjfQNhPZf1FF0MlRaUhMsloAVWpz2erRf_WNFZtwR4mmLcRUyrpG.ojbMLaK0P6VTJVw5VZ0H8vdyZ7t6kATyJeBB6CsEmphwDMFlzWL26wQ6LChpSUrNdYSq1.XYCsGK7yogW9Ms47teM2TtnHB3AZXJ_v7GcO0.Wgi1QKOcP1980_3g8b7nLNnOYVvrJDNqjJm5DfLYIL4r9.hBShRPTOXWDrpdAqufMrpzC4ZgGaougkNBfV28OGPUFxLbbP6R4li3p.QMtXZ8lO5ARC1xMb0HdVaRBcoCBwsnjCAYkpTjwIC_F4qydOFJTjc0f3zYpOryJ_8Sc.DcghP5MtXMCergCrA9abw81_XGL3vqYA9fETvAzaWvqrmN9NZrscOudyhqSzDawtqH4rsupBADNcQuyyTimZyM5s_55xTjG4.CJnbJtgx7S.uUIj0RgyPLIq6ba0tJI2t_zFwSYKgDy1ynGFxAOYLr1ZzFFLM26rTM6CxfjKKnQvGih5mGGNuB67MhzMgfhTvZ1Wvwp5s4FrLlEPUdrKSifvgrrv8JGz4V8Vq6_h_a6ds6Dlf4dJI4whKn3DCeuZABojdZzD3bZcHW6jgEwhBdveP3aYABSj0Q_VSSDUXCMgVvT.UoM55xzjF4oTZL6nRJMk_JWhpbSB5Sx2aCClMooJUPeTGChWCamIoMizBIKDkhOXU6RRhSMQy9TOl4t9J3dqJgM8ln8nMg6Ei6Fc0iV5yfJ5g8OzDHgAJRYmo9j7DUMC7WvaceE9yVV3.jNY9E_CjOpDrHDWnVRx1TCDtGZHaK4V94qXfoTLTiqUg4QdDMra5qMdkYpe.LG0LPp5uoVZbzfvfkVcHbeWvhVBH_nAnxUPlgwYHZ_6sGdZsYtp3qTbDfQCbK.O_ntXLvN44HJI_IWoCHvRjwvnCaVp0WEGmOchpjH3ux.5mUWg1ussh39gqjYKpfP0MVTOYeVMYa1AiLClZHff5xvp.xzv4z9OWvtXCDuFUvz9TcXm6PfzB1eNBvpCV3askfsUaMJG1PwxPbGmrC4fEhJV2ONRY3wRXQmmE50tP9GOxLSYE4n7EwptvudIi4lZOpnOT49pv4HE7ZaokY.qSs77VytOl.wMAspqvhFmZP4ixQE9CR8yVREkGKgrOl2qkAzwA",mdrd: "xygA3A0Lwz.VFXpzh8LUR1aPOARymk3arGLqOBnLEQk-1739241701-1.2.1.1-uaeltUmJckK4AJ_S2U0acoBE4RXR4AW_9dmDlQNkpkuKn8J7wrbd_kLGM9BfZVs5W1ARfgA1CtZVXye.PU3MkjhPB2fq.NuMnPxjU0rrkwHCb3Zgoz9gSAxabCphR6PR0VRXn2psvZbtkrefanD9TZOUjWXVvog5vHK.ETZg2N2kb5kAtmRKyrr3RIjzbfmbSWHFNI0AsXyxzsfI7le7zHgA87c0oW01tPRh6BwpJyT3e3G75BfxZ_2M.Pnbw4prYdgw0sPFfhC5AWkvN8pPk57M3fhKHOXPHrNRFUvs2GlAAxAgZtxQOrnBsA11zzale7sMz.Nsuw4eDNcQzHinZj7jIt4ZtMXI7rxbVVQSqobUu3MtjpA7TAzMhLPguVoW.G8MAm6DDqiTHxxCqW.EFw0uOYrZSqb4pfETTj0nB1TYc5vkYTnUbrxpK1zI56MdoWTgV5ImGcJETYbBaSKX3IGg2s8IXen6wdtt7qRuYxXWEwdOmDGGtkr31YO5tjaXL6wr66Hxetv9fJCSJKnpHioXiGpGn88VNI91a0oUYMA3_rPS_.m3fWHEXdnCd5ANtQg1LZKt.nJ7siklVxGlGokVR3tHJDppKJAJgbuQ7F8P9i8c8vJkjPindSKqrQHkpL5pNXojWJZM.2E8wz6zRFl9dQtUUJfaZVmenQUqtrWvLfeRKnokLeyAEroJofhCOX511rCVOJEH3wBv2QlnAgQEsofc4Yo6kOHjVGsho1rWhG2LXFmTgH.ZDz9jDdShE6fGEJfik8pbIQq7H3tfu4b3Wvw7uu7guTfiQIlTMOgKnvsRNlDvxUyP1DgzH3UMQGlglRVGS1ogWBV0lRnsavvjZb7MRK1JU8w8i9dm7cG0L4ROgH8zxx6xBGn3_h8ZJ8ZANFZRltP.yST3Xzvv1u09Ts7LpURKm751UtogAPO84p_UweVJHmGShN2bfIVSvZSy.w7smLXnV_kl_ojN8zMTNwybAgaKyV586Qq34J5QnMbJE_3aEyDLCxRUx7AVVKUarzDehIdhkjN7lTVfyi2vYEYwhlikVo2PQtYaP.A0ZmPM2b87_Xd1SAAWebY5roopgutBHAypfqzLhszx8i4ttxgNRhTh5Y5v3KDGNxPRrgjz5PrM7oT0w_UZHcP0KENycpeMX9JjBUyVBKL3F2T6UWPKsU2K6qKIUE04I6NS4ODBo0okyzM.dAK1oqNzuo9JpGqGBLGFWR1Y2l_ArGCXotbzPeNHvh9Vjl6qoNe3yRvGfCJx3zdzakUqCbIvDxVmWB7DmiwN3UOLMJ8KgpfjY0sAiWCpHt_AxB3MtPktTwkV4bpPa8GKVo35M8RjmxMQM9xeRNYS7c2c4klFivcGRfAzQbFt3Xse9pmL1Hj29w9Sz7lUOjybdKoJZcN.gCNqYAjHNyirTj6uqChAya40GQkZ39eUVaqgAz6ORvfoEQ7IetWnef_Esx9aSXs4I3MjS1hMzha3KKhFY6DoeKeMZzKR2yxXSV7Bc6dIXF6znBq8d18F9VzKuyIe1AFJKb9K4XeFVDobHiaGjsOeKl8Ensp5g.ePb._bZOK355oiZZx2RBPtLNy9_XhpA8mJe4j7S3Y5lRSjdneZ_dmV_53pdH5WY6qtQPVSHUaZa0jOC.aofhbfXZJoC0x655OjHBNSqIic4vc3EuYMv_GbhZs.vueOeyp5IyNBGXdG2D9nzehswIqc8q8sAUkA70rEVfTBVWCT0B0Km5KzCgxJmOPUozbDdDpEiorx2jTghQ_Xy7wtNbIVptjfuEvlk5OJ8A1gfSR7YUWKSRTGfzwc509dacDMvNnEDZDODohR0gDSf802Pmf7k2t_Gqkyn2ID"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=9100fb37fb54c964';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\/064238369272?__cf_chl_rt_tk=whvQRGtydaEne_xvLkYzlgQui.4wjCBE.EJFYTXIjJY-1739241701-1.0.1.1-r.JLKxi46I2sGGWA_hCO7EooUfdkeAnS7yCMfjtp6wQ" + 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