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-0267184395-gov.caltech-edu.pp.ua/post/106177008889

  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-0267184395-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90fd6c63dbf3d6b3',cH: 'xO1octTKroPd6w_0u3B7bvJP.4MPGvvzYkCOuFpHI1o-1739204393-1.2.1.1-1IB9BOks5XThZpNKwz8LgPGaQbI8eQ.zAlxEtGiV5tQku8RbV2YBSN2ieYLQ4lUJ',cUPMDTk: "\/post\/106177008889?__cf_chl_tk=Hle9eUIbjbPY316TyoSJ93QJbSrDnXccaJRt2mO_cB0-1739204393-1.0.1.1-PTFUJIpksQJGaKKbAelULqW49LUI_e6mbx70nuMc2P0",cFPWv: 'g',cITimeS: '1739204393',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/106177008889?__cf_chl_f_tk=Hle9eUIbjbPY316TyoSJ93QJbSrDnXccaJRt2mO_cB0-1739204393-1.0.1.1-PTFUJIpksQJGaKKbAelULqW49LUI_e6mbx70nuMc2P0",md: "cu4Ni7nIwummp1QkHp5IwvWPQTWAoZzzp2W7UNohcZQ-1739204393-1.2.1.1-8Z9H0ZSBq5HNRS7nDWkqXftEzSYy272hyOdDUNOks.wsKxfXWRFXbU3.vni83Zd7VnHYCvv9oqKlQggKvby.hYsSFZF8XJWStI1qQK3djiiaAud_U.DnBSRXIn3bCgq_CxxgErDc2Ayach_JfZJifGoY5dWbUVBNwhT8caNtewgnzjGpmXw8o5492l6Qbwp7F5IZF_edDJqZmtBSOvLA7S3dekXvPwsr8y3p8gROdO.mtEA8dvhU3tdx66BvuDFsz_WDXXu8m6pkntj4mrbFdzXv3wZh7_J1SDRl3KZxCf5h7NHccxRfllabO6DlfpCPUsk7hCh_PPuqhKhawDOaZja_Qn7UzF86.4zNkzWEOrHV4MGcVIAS82Tjr6H_pkwfkqsF94NJpb9ZDBez0eII4CtpctbWA7vYaCn3eewGxfd1G9Gm1lIc60uIr6Pvb8h_G5zuYR4mDbYRUWEhuufvYybgDSetaSfsEcYF6HUglSS0OyulFvKW_eOJsfDatVgluEslW6LqlOo2VIbi6VjHDvofC5i2BS0wL6K4vlCtwbIGvfwAeZlq8sFWNcMDbVojlEj.lIyIHDEOQRmdx6k6oezfuIuLZupQ0M4Zz9KqDBbU9nmtvBE07UYpufLy1l.gPKSoNOoPtYPQFkkaS9qfIrP5v7_nP8W_qqxfZ50oBg0UgBniEMhs_cPAXzvAIQ6mJIn8q2ANFIIKHpkggxqJCMr6zXzdn5FSfdDay9pBPqj_ZIidRtj4JVBrLOzUfSssQ0hbwceIp7vKDsL0meuNNJiX8zPw.CZP.3j_pb78NE0jLL8KOWs7MpiElEw4PQQ59XFZUtLqTIZEW3rrvS0bdePTdsgBTmTh4KwwXs6o_CveysJ.NN10oiumReE7Vv59Ox6RWUPfz8PU7N7p5LGVlExc_y_KKY5wvX8QMbgsEOr5RHwEV1DmRPbRT8QPHFSAE0WkrSe7SrH._80w3zWhgv7dwIJywg.vOGktDT9oPZIZnjirjBGrcc6Jw2Bk7VUfMXc52_PS_r_EruuqxRyhTL.YeoLri.br2IRfL.b2UoGJacntnVhmpSPKlTqpu0i7bZ6OywsjmX44sV.ZyR0E3fxK1Aewi6sZ4K3blq4WPUIgyUXsJW8Ji4lYFc0HWUQeVJHJ8iWQ8cas1ku7VNZIB2cRcfR_AHeUBR35Bz.d66qjJPnq_10V7GgVrzGTImurRHG0Q7XVO0jY4e3FbT_khOidg7_WtitBSdkP5WPtnNvhWEthFBqrS0FJ0redJISOPq8.N8nbS9HsYDJoTE9RTqWyESOCzDvAEdNR0g4.a6woYstuBceE_RviZ7GcrI9mA2iBvM_uF80KpYzwD4K4STg4H4KL5CKa4siz3LqpgutbAL._6WmQ2mWxKG4F67oFXnXTtZQ5.stXZo7ghTL1MPGNeOBlxTq8uctc9xoXW8P0yEeXd8sHOE7bEdjsGyigiumXn_0NGzzw1Bjz6s2FKJi6RJyClgwK0z.S16nNCblUKDFbvonc1lDm56gr9d8j.OFzVKjsmlyGntLD8FM66.aM.AjzUfnbkkXOmdzMOHzo_CK1RZQmadN6TYluf7_1isLdj6G._fsycWoLUaIwfXmW5sRa9ZmcN9MltFjpFpCQ5UJc8OX5QcCfd2597jezsIF6Sw0rvJA1SZb2_0abAnYgXSJV5jsKngPgUjy55nbW38R9CfVoR5K5N_NTjdBfVAhnnzYsW_sOHgWk0V1fD2aUvejLaZ4zZnkHotWgkmNDIq1UVROgKE.caSyVr6D695mbwrk76bM9v08CxuOzQ5E8Zr7gw.GgLwmpMWdtKrpOIZ73AGB0GJBNoc0yXB53ZA6qJytB3Fhg1Xy0etTz0dQBr8HCJoyudfee3k2dYMlRKVSMBdhk.01R1hvPSUlPptApdFsdQ0p2dej6UfJCEhw_uU0YgTMY8ULSAidSSepSrOS_7LYVgBaJgcUA6P58hKCioa5CESItIefoNUhg_1Ge3iKZced7vzJyClwBJGjVpr.9AtOCq8arvDraSLFN7.504.uxZfKH9qqWlVsFg0N7gCaKf44VWKSkZPM4YBnGKsrblGKznLJp_5K_MhsgXLAkjlTN2OHv7ap1pO5tOWkkeUpKQWaYAhx4p2XU9B8IPFLqEM39s_MMEf5X6P2cBh.49fMDg_YRQDFMyi3kR5oe0sq3I5vW_a5W5gU9W2NfEkVThOSjt8VAsAzlJV0ilE4yZC16zzFKUTMU1NTtOA",mdrd: "_69e.YqWAt0x5xxWMpDd4uCBpPipBVa36Ab1hc0ALXs-1739204393-1.2.1.1-BpfJvaYvRfJilwgaReo.2O2WUtYHXpY8wuyOnwhNWkvJEzeuqzWoC6pEaN5m6uu5vLlagd1r61tScv6WJr6spMMsDrFhJgQXEYh1DjV3yr7oE.fqbEWHNFZcdLMYOma_Q9jrTeMwISfz5ybQJ_WXz.3L0ZVyVQphCbHAqb.3_KrN63bAuNA5oA6ot0N3vKdceEq1LtenQ1WQPBq.dzoE7ACqGhfMiUl5pvnhXWJVYkzkLok..EJ1fPGa8232NFb8s0FHqnnswT2TGOJ8pzdC_bg46hqM4.bIjDpBJhbMgw9BiAIpmgGRl.rfpGb3rTig_fcqx1tUlSJ5eXUU48DQSZhaSnnxtLD6jRecB.41RQtmZGcQ1AYK4sokx8RH.jTTnoDTeJkVLMNzuX06LtW8GjNeNNwfTHjmmBSFE7fXCz4LlN6eWmS8XyS7WNZgt6bZ4eReM1QEJwHaMC81NsZmZEfwcsnpuvxYOuANZoKeA.wOJA6J1o1uEEg2FaKCPJjfGtBBU8iQZtCBdrH4Skicv.zk7E5Ii.04nV1L_LSmSUSzoiR809p5m0.3oVmNDzx7yPGYYimgDmrrLcgTRJVQL3Ju_BlxaszgQHfFUT.vgtpGRiIZ63d3vEw8zoBKzVACHd8gz9.066AwTyfsB9CvyCxLlZhJM5QE8wHwUh4gCAtB1e5J.IOmNyT1YGtMEJBhgncMRj9mh77C_6jWOhtgQWtUhs69nwGB.bMOw_Tmj6GB69dBOO7MPuJbMm9jnR4X9IOZYewUcCqPi3nZNdD353uyVD5LtXKGP.QVrP4DlKFL.bbdGfc8.4t9.cKVNS3HhWPH08dco31_Kd3uZJHsciSAeO3wAax4i66L0MNN.46dy.1Ru6rWvF6lJB7gvgJ1wbi54QOZTVh0Yj_NjdfrrFc5DfIISU6qJUgsbdoJOQUl8SaUv1r76IpUuU2PvlQqZctXMqcS44PZgj7Yh_7k82vMKInrXLii75kMi2ILWdow9RnlAwka6Abg5BQiGmaWSAkgygCYM5domou.EJWBEMrYu8Pf97WP3ykZpHxPeJNiU7fdww9KdgfnHCJqbtaY4P3QcaLP9ahBp5R96hELi7GGUo4Kljcm4ViMax5TrCtHhnMrmvUkWV59GSx5RvwM27nI1vbmW.tI61z_sNgsNkqSrGqbAMGeGZGVzs.UlTcP.FZGzleQsXa4cLreZkvmVFhdgsS5eSslxuO.dcM1MONpQ_M_CImVtzXB4GQZPTS0zz9Z1u.1ocNYblOq.lMZa_Rn.x11SZ.Hv_6JS_fBBdhMEoKSkYq.2.8GvvKlLIix24IR4LK7YxwCDvgumN54PrTTcSiL8rRtW.yckEL8FZcpQhvQEEPa8vuskE3KOwaV_WGLZjfVAne99QI4zSrzNso2pMLHgJA6HEsRT6rm2JBQiF0spHuQaQqN7N0k1hwesYqLRi.nEPqqp3B401QNzWn9q5gVtU5PA9W7RFX6fXhv7wWlAanqqPDZF4BuRVKphboeezpJ4g2_8Q6Q1NzO.7tEpp0poVuPaJshgz8jparwlFtBmzj7A7Hk.HRsECntVHANcKGsx5MQkBKmLJP5B3cze9EJN1xR8Okpvtu4dvV5ZpGVDq.._x4oUwWx78vYxmnHVVQ8fH6NnFMXtpL8xWiZIGkeHqH8eiJAiZsBd93cPj07Ywa6gZLDxa7L7qeMSUMfYqsnvaKS15NapjYwm3HrF1rKJGR.LK6f_x27d.dBsQlLLxSnHg418UWqLnUeBBn.ZatGv3MJfsRXyDdpXjDQc0oR9qw1UGzVFe93nFN5Q1viK4JIGjHBl0JyGuuMVFB0G0drGlK7sLVtQ_JccRa0jgapDPqZOhlKvtA6Eg"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fd6c63dbf3d6b3';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\/106177008889?__cf_chl_rt_tk=Hle9eUIbjbPY316TyoSJ93QJbSrDnXccaJRt2mO_cB0-1739204393-1.0.1.1-PTFUJIpksQJGaKKbAelULqW49LUI_e6mbx70nuMc2P0" + 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