for Atom and RSS and KML
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.
<!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: "730200.mit-edu.top",cType: 'managed',cRay: '9110b80a395f084f',cH: 'xpsb3d62zq3RCJ0u.AaaLHQjAhxIAwecSN2E9dTqHBo-1739406721-1.2.1.1-_hA1Wu1WmKD4whgQy0koSaW4jyxvgDEOV5L_X5CjpOpLCbC0QQqr0RIBKF2eIctR',cUPMDTk: "\/post\/4875932601?__cf_chl_tk=WzAl_eeGi16_NH1HUeGdLKn6reU6NaaURqGBBMDq.Xo-1739406721-1.0.1.1-e8dg_WNVS.3DaPcTQbalZKeEvm.f2IKQcbRoF_gkaao",cFPWv: 'b',cITimeS: '1739406721',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/4875932601?__cf_chl_f_tk=WzAl_eeGi16_NH1HUeGdLKn6reU6NaaURqGBBMDq.Xo-1739406721-1.0.1.1-e8dg_WNVS.3DaPcTQbalZKeEvm.f2IKQcbRoF_gkaao",md: "VlL0.bJive5_5GCbcA.bOmYuqS83LTOROR5N3e9FaP0-1739406721-1.2.1.1-V85fMjYEtpkqdBGXNuJxduX7RDfNoCb5wm_YbvP2kXiqr1T9UHhg6h66QBaT3.svGmJgpgRns4TbgCi0N2TNUQvFTp8EgIvOpuvFGz2XTCz3rpvdka.4Tmyzky3BEGLuEpTp1cRlcsW0VSsWtkvoffZls5ri7sfzSMMwklElNj172wz74zKQY4wzwRfoC95Tok5hiHWwE5If0vQoAXkU6BUhuW6AsD.0ul3OxHHSV7FoWolJq6T03Tem8k2OuU34W8vaVtT7rs5oGtbwo_YYmt8akQNUsPn7eDyB7uXACLVezdtue74B3zniJJlIENzjjAyporIwDKAw.bKT9YKD_Wgv4BNW56cxkMYl5jKvSNQvqfapbAlrdIl4cgPwA0YFG_tyHncuEe4ZU9KYy7BtGkC5gxtQjDAPEG5XXi62JDpS11C.mfsqpwfVpguH9jdxMWMo8vm1fILw6.D9AI05zStQVdgvkVht5YShesq703jWb8n07GdWfPJmD7nmS5J5ql0y7pdkiDrEK7uE2toK1CrS7bzlgsS9h4uFPD0piNTg5i.NOY3xH4VoINKxXyaB8LlDI53AMnmwtLwKm_ThJViMLJNatPSmy1xlD1GdsR6CUYYLk0ZEK2rhZDNFvrN817N2y0y231J1.ep5A3ua_1gukEmsIG9QTyZioES3PMnc4tq0sIKd2WJl0bqLuKFYWS1GslKYCKVtIfMBQ4LetUyioltJcBDGPGd_qd4oqX1YCoiaBvd6YoZkXy1DZt9EA3utmqHu71WI5r65I9nkObV8JPQB7PN3Dov7QNEvgJXUqkbLFlaYbn4bRP6O7t3loe6jaTs2NwR7e3nNYESWl9xMfKm1lTJQZ1w3zc.LcEVRMzWqQ4VF0XHUYaHbratFDExpMb88vx6XZAtXfzNCuXWMSwU1SV4X5yZUFIq1pyd6QwP8FaCxAuic_g9PGbR8i_gYd.7kfh2PC7a0zEWvY9vNmWDK9E1PvW_Ybkc.r9Tvsc4hytuhcXf3w70k.Om5OepwAzyIDGEHFSgOVGIc6xRr1n23kZuAWmqXD_vO8bHrjXsAeC0TM_hsR6.wnAoGht5sj1aQms3GTw.GtT1ZmNTWpN6Uae6QA_zqB1CZu5_TAmL9I.R1yNaiG.bK46_SYKqjdpc8QTsSQ07obwS6kgJ8Zy2YcYzJBqAPtLVb4VwvHXyigNmz.fzkHistZUJqJINp67598uKf98AtTaHAb5CwwmeSTTY2N_PTDeeUlKA9P1iPSy52AIqIeYxId_2iJsUKZn6SdR6iTDAD6L7TIIwP7_MbR3zOlPY6DURpI2VuDPLzFgnwfLTtjo0ucAiL85Qs7zfPKmSAwhphaoEF2k.gpuvzHQADbh4J9zVVe4trVppRI.jtRB0s_borjHxsIHfs5B3aGtZs15VcSzkgXhvDiw3BnhlSSdGRAMRJJj2rEiVdJgDZ57jQZMQUnTlwBqOGCq0oDsuwzO_7hQFYbtxTyMrMfwyuF2JbPKoraxwuT5DR4bX.zNRF31x5hkWWKbp6uDLo_kepmNUsKZVjDVWSH1rDsLtCodnkAAAlnYxqDSvrr3p1DsrZfVdWt9VVKxpY0J06Tf7pSVKsvkHdBo7sy5B7WQkodEoiRrikDHlGlxoO0x_hMXfy47g8G3AZ.8BeyBZZmALvYjlxaMwO8Mel.2aC_URrgLqjUuIdHACTQPD2hDuFjq3B1icKFL2SToiGBe90gcP5_I7mlWsDhVixkKR_4TC6Qny41jyuQcc_27wBeTj3at52_4OivrY9XXq4Mb6XJxnFqoqpYkA_PStOhCJNbD9.p5ZApPwqy1qHZkzXxkTbM2Y7TfkKglUyMTAtfhz253niwHHje3iuhWLyqZigXY0feaimTu8RdETqPGS6wTzZK3Aa4IVKaXC7XkvDbfrB.1uiHu9xY2KzxQmjZZHMVv3ZBNz_7QlqY05ukJT3fTb.kSKuo6n5bXUcLczhkxgLw8lydbC5tmjJl2By3YubfkP.OTxJEdMNNmkSsMfoifzZSaaOAwUHkTJzPUnqt9A4nCvh0lweYKV.fyU0F0.zacdA7kt6Yf8Dfb.cKPcfr9MIwCBWOfImJuALP_Xhl1xqfIaoqf491klL6StZWyeolBjYrXjrL6YYvCSw9IBOSKevwzd0YK2NNCIqP3cvY2NU.fHUowTJAG3StSTHYMH.pBKTh.yT2M5AUXs",mdrd: "VA7vMBoctQT4oHx.MiZLiqKPe4XyKBCQhRnJYEtyH7w-1739406721-1.2.1.1-15TfwdKEH817jwVyk2n5CpuaxvlDgx0JvLjOaHZiuCcnAiJjbTxxC1riRmjvM03b9AOhT4Pyq9jh_70SyuB5nQm.513tGPaBy5OcOBOo_qQXJ7iDcOcloAneEChwHI.puzke8y0XT0RDgVBqKwlUN.mD1bfhArGsXKFqXMoedjwjyQuIh9znpFPCuOPy9iioX2D4KUrMaqUEZYmIjwN1xu3GHNtprxG3p8Z63velirCWd8LKEleoO6NkxoNQ.b.lp2zk4fMspNAK4kNgceziWAwPyr91Zp79QF6IuXla.acL3egO7_E.jd.6FufFGG9A6epXC5ZBqVVtG4UQDxo0w8W.4ra8cnREKlevg6iq7HRUh9phrfvHwsd5YVOFKQBOgP4Mk9LXmg0mFJyACQ7eM9H_NZToSSKqkzmfDsWjImTB6J_wffSPw6LfihwosAe1AgFlMjvLU9A7O48RNQY6aGhG7dEEc_PNEgu8f5OexeqvrJXX8o0hm.lreKMI5LZ9shyDmC0M5ipfl7y42UZb80B9QczfdNYox7ZE1PiDFUBPhAQOjgUTox0X53v72wipgH0.2H_3xuWWjJPXYeiP2bNr5YGCv5.8AoQgKI5uvh5QT8CPb3v8y_EnsQEuejM_5TsvL6EmJKdy.zcs4r13qHKtVz.CtzKLEbqSOPICQkf1cZR45kDIsBAP4B4AZk.GMKTIVbqPwQCPETQKd9Jaivz1avg8LJSL1XXHKmLLdqx2r1RV0nFNJx1FA1DY1C91J3ojYEG9S613cP.aWrseyQ8a3KI7R6ZUgvb9rVXcCgd7SOtofZx7w4WDKVFMP3fB0OkpbfHREjgwm3Ho2IL06rCRqD7Gif758vITBlcDIcrVDWe8XajoO0T0HT8NB08klmrwolSKpO05wkSh9XgQgLEm3A3AFE6IFTBW9sBxXpdV08O3i4ddVcWK1QVc9HiVZM80X.AllBYOwl47n41ETt1wn22yNUql3BV4bXutpgdUsHlPu1IX1RSJrXi6laC7M.I_50W1YRpOXixIhTPUvvM1ClZ59AqtCsrDuSiplWLyGlWFv3013Iz7qCiaOb0BeZfsuGSfylRnqDt.ZBo8WHTZ1BEZUsgGxz09YFb7zhycC0mEbbOmqLKEM05qGCu9rgNguduBRCxGgbUwNEkUYofOuh.zGh9Yq_9Mc_fwCkUtbERLA2A9AocLmn9sHfIrsUyrGXtcQ16Q7ZWPjeylkWtWS6TX7UNPX.Y9gqDTJpUxjsQpD0oVeP6et1ekwvgQAoaETdI9xL0XSeM383WpltcJgqUOslHNdMf1slI5SSrKMC3CWeClwOHmCusbJNpKcPIRT9ozn.AVRJfPmrsAka._Z53ATQ6F0BdTAs57JSJwSi1aepPD1Pq4.mcDXNmaL1YmFxWCEvhP.A0bDSS60SsDRWunTvVHFVLtgiQ40I3wNbwFw3u8.ZcJTcNN.7WPo6DdyZS1ur9VVRAPBWRM2eDHXKOrTK6M0UbZQhyvb7Nt3eV2_igSNHbBugcKMtCaSBkRZJq1BjxfcLU_HEskGLKsmu1y2SXb67zdqxlG3PyUyz2qPhgQ2bcrgWwEnAZdo1s5_BhLTbzS0sYo5tnLZHbgaW98AwIl_wU9Q6SAzO4rQW0Dm7if_k1YxUGZ_8TLglgRc4PJjpkxNibpvZig5dsJUQv1yEAsGIbLcnRya3OcTKhCbAxOyxRxyZyFsVTJYLJvgmfYt2ydaD9Q0d1nvcWRoA6Mx2GPxSMKQS6koXqax56Weua.B0yW64PXGTy9xaSJx3ZcAu4TDvUwc844Gw"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9110b80a395f084f';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\/4875932601?__cf_chl_rt_tk=WzAl_eeGi16_NH1HUeGdLKn6reU6NaaURqGBBMDq.Xo-1739406721-1.0.1.1-e8dg_WNVS.3DaPcTQbalZKeEvm.f2IKQcbRoF_gkaao" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>
Home · About · News · Docs · Terms