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-7908451236-gov.caltech-edu.pp.ua/post/888505795626

  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-7908451236-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90fcd1f2586bd6e3',cH: 'e4M55NsozGWBrb1bBNwpWyBYxSVj4QcHKVg5D5515zg-1739198067-1.2.1.1-yji8Y6hgvAB6BIAPEIP_mPhJrZgjtZUiC_cSfpcfL3POUr2dqcRy4eeMxEuWC68q',cUPMDTk: "\/post\/888505795626?__cf_chl_tk=MUAxy5I1UMALWFiID2dXO_9lq1AvtbFn.mExrfqqP24-1739198067-1.0.1.1-ZaI1vTWb8ZUOq6voP0kB56QBoldbMnYKUKjq.hYf.TI",cFPWv: 'g',cITimeS: '1739198067',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/888505795626?__cf_chl_f_tk=MUAxy5I1UMALWFiID2dXO_9lq1AvtbFn.mExrfqqP24-1739198067-1.0.1.1-ZaI1vTWb8ZUOq6voP0kB56QBoldbMnYKUKjq.hYf.TI",md: "8Rgu8F_zydRBJgU2vTDJ2G9H8XhpVqzFGBAcVSzmlwg-1739198067-1.2.1.1-IB1eRNvF0.2NZQ41jjA1B5.qaMQcv8n40ZTPBNeRw_NWYbENeU6c75zyMuAojjBjyZnbx4kJiyTqgFespD4l7LhjAkK8qgKlHXJ7fM5Ku58FOIEExY3iZUrnRU3Xy3Dia6.J9mvZASGHSCCUALPDL3wm32BZ8lh7vY46uA7HjDR.lQ0EwDAVY_uMHSI3WgE_m_IMzorkfpL5iH5tzfXH2GFnvkvMjHCarM4B3OfUlT47MOhoSBlk.vZurnrsm2Pl.aaPlDjmRLRx6h4gZq34Ywdr8kjXbQJj8fA8tjIjXJ0xh5Oc_tnBe66TbHjEqOda4wbi4wZ1w_2pqz6O1tV8aU_dg1iDPZ1kCs7SlRq1kEUvWQ4mFX.245FZL1v0lP_yUfN9B6HDRZ1.JYVFf5DtJiVi_iwBEXNdIGso2dZpHaksyLuFOqW_4BevyA2hQmwXk6HxVO8iym2jyNHOWjuJMQjLwtM7LXams8_c4ej3h22cMPpQ.o_l5IYyt4_fV9Pc8RJYGsC7rI7NjRH0R98Zzlm76ZKZsnNVh1SsJjLBvZKfXv3e4rtvNSNsViupFEbtwa8vSkcVwtKB32AMnSb8E7Xb5UQfeC0VjjKGYEvBUPTvzFGvcd4VPGQ9RBMzNXtP2dBjLybuBy2gDETEAjulJGTixiQ_Tex5lqg1_PNszJchznuiHEYcP4GExyVmJoqMI8eYoNZKTDoJ2naSZzzYzQicATnW3B2rsQiaQVK7JkrqevtxGQxQ35P2yHJOUajQNQ_RUmyLP3CEbJ7EsHFYptI3IIJiJgyMzwNtauBDxF06rvNU18nJARzDCxg1hHohmqJ571bpWa0PlEUHYIgFpuegdl7.5L4MD.EYLIY2PU4P8y7Z1T6m1SM1jsULV7GCbrtl3PrEjdm.kXxCg35We9BwY.QBdqsGNePAgyM1Aee30hEY0cclNZ5sy8aHVbiyKN56SOibmPADwwLhyAiNO1d.x4UOmV_8CQ7fy204_VGc07Sark6LVwmf.l5CKMna0mnuaakg9PfMJSYp_vUwzMarTocBOeiVQj3XeWWU7Ds4oXIqC62r9ESN8wrlMaBdLGMo_tAQHue0e94vmTFPXfPVg6n3ZgfUK2r8aofKy2Irs4JWsMKv7XZ5hsc481evNorHwe55F3UxMGje_WIGGzZsGa5Zdm_MlKRS6.0a4FPF4Np8e3TjV3H.CkGdDWaC8fBue1Mundj.wc_KkaoQtijij6TZwmB0uZZ4tn4p0pQi.k6uXxUD_fDGqE5jqpTJEAYjWACbpz3k0E34AX3L6r4jLZDjHvcM.m2326BLT3ubsMNgpNKkktx6xaqSm0IXGvQq5JCv0e6d.d7R1wyyBx1BdhViIvgzy2AbwthNP5LYFIaAyPbNCugvq81bLjWT1HXyNFhMbV5YwTIsg9K916J70xZIxIg5DP0wZgmP5WxWc8bAaiH2i9MdEPmcc2yKfq5Fgt9laiWu1uHOYlkqkgD7T1eWt0O6WA21VNfXFcyO1AwZnTa0x4aO8pqNyO.5Ec3cgNeClR8LepFFObrzsRvilRe7HHZiVcf74.9iNlyQ9Lm5O7eZW8WQAKgCQ7Lwg6FJvTqV6052LoQW0dbC6O0qXTxVUNV9YQ0XbZuBAata44zw1WvBIPqgdvkDYX9SAr7AKwPI5kldUyCAW3APVbr9GwV_iOMr0h2sJY7wN0JmZwcSUj.2kG7R0bfXpslo6kRPMCwDSzM4udbVzAi9hQBn476RopyEqh0emboXYKkQvONMpFbvWsAc8HWuC6UyilBWgerOsoe6KJ1aItxZlCq7A6TIiE09eDIQlMW9NG0J0_sziIgcUIUVKi7O68bEX5fJWbR5o0wteAYJgE6EP5N5EvlIVZwNjxhuS5oonSlZcdVueGvVLwDs8Obyv8xfD01UUzs4DhgVQIBzqDxFwgLkL5IEC1WRpT393nlhFOzqAXJXzDSf2e7VwlsqWzG77XnEpmkY9AU8OtcKqrbDC3C5kn0OJ05PudIRfGa6J7OUCd1KC2f_72ePc5nrmRiJKLLpLj.ZEf2CxoLK4lEidLxXofjDTtol_IYwMPHusk1.Iqq8Bi_APt8jI0Ws1MFNwm9BKJlo_pxzfUTVm1xTStTr9s9QMRMZ3tMd8imU16T0uYVZCqIQ5RBCMdkrvX3.x65OYUkpEtdYjSXXunW3Fe9V4d2fIdwvExPKfv6uwiiWTxdtWxFaIkl7wuwJ8I7hKk_enDHC9Ee0eV648BNFiA",mdrd: "RCHjKLoePFJUkVe6neqtM4N55fWikldacMRfe9IBuiw-1739198067-1.2.1.1-xq7XLVIe1iCPa1nMFsrx0EVRrhDG0fCPzTLhXTbqM9yH_zfAd2ImMQDwVVUiJlz42KHfLCL85clRaVi8WPvv._31y6B_eW4EIb2jj1y9dW0t1VKqxxWBULncnEf0dUUN5OZRNGrHIx5hpVcYGZftX.qYcu2RaAPox.kr4Iw3ccVYir8R8UJ6nRnIsfmjMkIlFAmPGENapVU13TfSwpj8CtD.2J2ivjKHSHS.8Za5bRgSo3AQpRE9x5PQY0zdEjsBjmCgLhvf.yxfGg.dX3lDeEe0hntBisGOvL5xFJ9tzNpWglTsMBklDHR6JqS5B5PoKVZ7bVV5XvGjyq2k4EpwwXk29VK.dyHjxIFuoSBMNRMFA8fe_V6j3kEq1mIYJNFwf0pup9umiup7jkX8r0FXifnpFR0q75l51OUU3dvRKkrYorM6hTNan4dlNZa9J.xLZbyfskqSh8pOg2li7PqqW13LmarLp4vjeGDKg7lGwmSYXwB0KCoYhfWvTo2HZTCKcofNwVv0knB9xsUR.jn_u3omqievWaxXL8L5VbTNcg8F9w.bHRPKrm8TnzzLydDN7LxRqbNlIbtiBko0TpGVWx11JEm2QjWGKwLIakiJ1zfLT0navS9CJT_7j0429lO0QpqTvJuO9CC_Ltfah.MnEEEkUNoDRKMtmf_hgLFF8K7WSde4bnNWIYUjYPRvritGgyufSZpP_yj8JTdf5GNJj7mzbTx318t2yu_lN1C.NWA.dwvp7QZRlr0UeGHdANdxbjd_EZAmMZkS.La.pW1q_rbhjdaZDwavvkjvL1CdivX8kQ1nEVfip.15PVmuGvsH8U4nA1DpeaA8XOZ5PfUdrB926dcYIHywbU3xYzvV2fRwmo6vjnpzsuF50tHQNIjgBQzKpuRBURUi55Ld4ahjyWAJ0vQ4D.gEBx3zBNTUQTpLm6laPOVgbfF3KriJW73nktCjpZL5WW4RWKsoTn9BLgJ3Za3UrYV3mA.qn8A2251Yz0FEYgHGBmtCwsX392eO9fxOD5V0P8FWXWWPmecA2w1LgO.D05ptDmRMjl7G.YLf1C7gY0df_jPm_7iIWVnkW.hN4Q4L5IdmSAohT0eKMFkIdGLOy6.pmWjGzGRvqIfD3lrZbqBczKzxvyDe7UOfqHw6fG2cma89MaymX70SmGgZQatyACVj6WKnBtb0JX_0gDRInXjBGaxrOMfZV8felicBouCNskYm_gHbby0IM6dLr9a94DwsQIkM9ySmo5WMmVvoT.cRJ4USrxcLcfA_AGANhg9CYAxMhrLxMB3622vP3LLl9ioHsQ3vkPrOjSatCqrPCAzwZHDvDEI8cYeKWZrnqVzoYcfCoYBhqmiQ2n8FQ2KJ_8PQvJ7rursHpLXqFAG9L.E65CB_f3d42YrsENI8KQaBG1NLlZdMHgj5zYBZxsfg01_a7uTM2N4Ti4swR.raetTaj6n_c4OwdLz1GLeaRMcehkh65Xj8o3V9MQ2DzpOu7NZ55y8vf5OkEDBjYE5zG_nBBZv7NB2CwrZAFi.7nXq9NettpDNZd_r5LvJ2bcRgHb7R4q7ZvEsbYn1gQ1bFO0h1Wjky1Qd63mGQZJjNjeyGzMo3.Mb44Y4XGpcMuBuSGAeCscPZD5Q44NEtxNlcqMoOLR3YZN02aw.Fc73rsOm02HsuUYS0Q9RmMSrEQCuIhO6G691KTg_YHzvVI.8ZfbhZFUiMjacQGaOucWT1VdYVmKulXOXAEW_U.pGvk5jbJzoQ_wZ9tpw70iwpwjOA_OrBgN8jQoctHPteVsCOBMwtzUGauht1AANeSYE.VIQnV5OT33QYNT26bqGbO6DDc6Ve7dv1OuY5xiST"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fcd1f2586bd6e3';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\/888505795626?__cf_chl_rt_tk=MUAxy5I1UMALWFiID2dXO_9lq1AvtbFn.mExrfqqP24-1739198067-1.0.1.1-ZaI1vTWb8ZUOq6voP0kB56QBoldbMnYKUKjq.hYf.TI" + 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