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-6019847253-gov.caltech-edu.pp.ua/post/388622194801

  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-6019847253-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '9100fc564913c5c7',cH: 'ICRFxUI_Vtd2xA8UfrJkACsRIhxtfSp4o1JnyckvgP4-1739241746-1.2.1.1-F8ZxJ67eSdOtaQKwkJ9R7f7h64m0zvUKTWyoIpIbt6n49D38f0UGe_1K6UFTjo7Q',cUPMDTk: "\/post\/388622194801?__cf_chl_tk=Kfd3C8E4.KAb3Jr5QqahVWNFPR3ptLhloxaJ2AybdSE-1739241746-1.0.1.1-uIXeGLdMSdV_Z7_8pWf5giadn6VXwli9WVVJqZZ4Oc0",cFPWv: 'g',cITimeS: '1739241746',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/388622194801?__cf_chl_f_tk=Kfd3C8E4.KAb3Jr5QqahVWNFPR3ptLhloxaJ2AybdSE-1739241746-1.0.1.1-uIXeGLdMSdV_Z7_8pWf5giadn6VXwli9WVVJqZZ4Oc0",md: "hcvk2..Zp_EXn.xAn.5zlNZIAZZWZIRblupHM7A9VvY-1739241746-1.2.1.1-8FekgeZ.7VEU4_VpzoWu5ZOG2xJvI221.uq25Y7QHqHmilsmaVLaIOwygRMNXvecRI44wGGjZNqhaQZHxxGs23I5kxOsfB4QFOHp9ul5stJdZCuZ.76Gqs2SoGnbzHVYrSG5ggCcWC1k7rhGlQur8s9FdUwEtxsClI1lrN1BTAHj0ySdQIG3GUnjWF6SEs30USul0Grlp6eClNpHNoTYggHojEkKLW0Sworfr6BzF6wt8nDPpykPPJNK5l5gzZfzYAG58XN.o7rtrGzfwxSFx0daxOjUlwI0kd9jHZ8gP8nzAoSNS1w1Edxt4Yx85jBA06jiyFDIIkiQ0DPaCg7buv.hFdlbDt5bp1dJs5JlOMUmf8BQpzwk_W2Lq4b6sD_CqlLC_6ZeSuwQVgnKtCDtQHKZrzwYRUI19LUwbnGpUzk4gw6Mdx56xHlxiSjrERBMOw4sZPBk_Ysx10_qZ8qEIqCSwSBvtapBFJUciGzhi2She9VhYEF_hVtZFJXMwmxH6kJLjH6_ri_HICX6bm6AmcnDIEamzTcj2_lA3JGsCOvCztVJr46i3hfjJqz_45NIqpSQn6U.9F8R9Oz5aWWFGeRvL2r6RWcDpdM0UZ6Cns5BV9uMewsZUiGUSRiWbFT_DHvmoocvJ524AaSAUF7jiUrd0.Sjokr5HZVdqX6X63hXHr.Q6dyHA78oEhYH0geHrXaiqKHwA1TsNPcA__3Zrd62HF2Ayyd8GjfDCJLxnBV95BldGe9f71XIbJjmUAYuK8al1NUttcEMFZ9RniRkZ579yUddy87GIEX6LCeHhue1povLS5nwpOTnydMuEWRBCC1J9KCjjgpJeWx4M6ChT_L7cyVUrCRUweI7LVo5lQ.8ReHQndJWQqTRQlO_mALTa5Jekiys0LD7fDMEUg96.2PZvj_j5q1TkWV7qacj7owLmFmnukFHPnUPkjXIuuWxe4f0E5D0G66WIAqwuJyJUXDTJsvJYLOREaMA0EwiM4cHzmlkm3xDfHz9ShVGW5uHhNqctXvwDfWw6OnmLZ7eyF5QP4sPZ4DYSvl3Gh_jhtwaWZqZ8CY1df91U6hzSkYhGRe5TCB0rE7VWM12QiyB9m8YpeWXZqvRhATaQvgqvyQiy0LWUKxFaX_gFT8tjWkQxMVmG.MkoAg8I3kwqKEpOaFCs0Ghz8FmOTOoebqwQ.JqhIxr8xfvo_84xuIRCK6IzHwga0z8jGLPNyZms_EScTFo.FDRJbOtoxBiDW6PkHqsonSlQo2Ba20ekja9i5vIMrgLaP2n1GZ_Ozrp4IKkFLboK3WHYAOJWQG.GZ20sgqp30OXHlbfdKXdcI72h7V4.JR4WQ3427vPJ9uRGWKKguHlRiNNCZ6gDynIwVTkbpu_ZZKwpzELfPrRF6XpcDk61GynIyStlGx5vJK7piZM4XOUlzqqcjO6pwqHBSeSdD7z7hSqnYnYUiAOyyPnTjzthoVuorrVf2ao2kE_4iTEAvhFkjY0x5eB04YIdS4B3_Gvmjybc9oD5zKtwZNFPaiVrHfXmb0qy64llLGd0j9qywQuR1J96waYtXP.bAs1wbYAEOkOn.1ta7BpkLefDL0bACGn4q.ajD9uzufQcztm5T2g5D2ZY8qbAxylDaH.kwJceFrb46j6gieCrj6UBXzOibUM_0XHwxA.u5Rc1peonj9WsJ96A_uQWFo1dVYOYwWauuN5FMBmzwkn1W13jezZC7XnGQPc5iyBcLWQjjInVDnFDgcDtlY09EoPNxpWrBrZdEkEASwO3QR3iVPNuL9y8182BtEWvqvz6oeN8tXfvAccIVh023jLk5ZibzRsky8Ki1LVCDvkIuIWIpyOcJjD7JIkswmPhptygoBMC3G0zCf.gg5HyaQ1MPQB47svsa.uZkL27oJEVS_yXlavpYSrxillFaTZBx22Em.rbDPWY01mw8ZSw8WkhCPGFTLKAM2y03a.n7meFhNgR8qLJrKkTWEnd6am81pz.BqR.DuNKw89RIz5BB.cm3BNrYONQDvq5kcpXunnMp3RVtoG6nC2oFVIIRB8BAhl5jV3qs9cX7I4EQyODb_cEkH5eycp9wHdQ4useTumg4JH95Gd86geFlYjaLdfSdjbJuHCHV_DFONOS58Qo.4SG_9bLM0l3yFoo3Pkcqiu1VCJwSzxKsn3XjDGFvnckfBUSa8_yFJyYJ0pcCvquwrOtH9ecPyRmTDzaNNkp05EXn7_R.PWZhcrNhan4ibHJyn3vj7BUUCggQ",mdrd: "3gDj_gOIPOprB7Ur.VKF8zABG.VjWj40rF_dKnS6Bv0-1739241746-1.2.1.1-pjUXOAUCbMUHyNzfDhay46I6GB3Vy1J92w4Wr5Cc.mQZilaGUweJyofwdzrZSv71TCo8DuWamhBmZ8STMjGdnuJun5Uh2egm60OtIsUdvchNskyhy6ZqLPGLjpzcoWKBrpeBu6yDUAtAL4FmYlWtRKk1HoT1uMafk7xrLz0zg6s42HiDCL..1uGkSeHJASmDE4AGUxAWPD8RGtbmdGk7gl_3NDIrzasAgHmLS0QPkis1mjSrP0VPfPCUHnCgbiNE1dzkTu9TKluD4Alcdq.3kWg_W86ExVa0N4DIvbqjo24xrLOQP94Lb48gs3JZ0BRPdKZuqfuj_p4mAzu7Ax5i9z8GWyfutN2zHLJW1qpnX4ws79aqpNQnezxeCSb9goy2BTGAxpw6a9630YFHSI2FHqNGCVtRldNOvEZ9JYi8GDx0YcttW7gYhnEJHsW_dyzozbmwfALkK.8.e5pevVevRQkD2q5bwAjVHekuCUzLqF5VZLjxEOiQ5XRzyTwRfamsM7WPq2BGYMqC4NQMmTKZqMCPwzCSsywBes_ypBf5mxbxXvXrOrtskMSe6u72p8wCCEHyx8b4lhgp__uqWTPGEUL.ncrjyx7zAtolRl___wTCa_wl62hr.9v4r.7cAPdTsmHnqMFeMacP8zimQiy1tpgIp1BJT0CJoQ0PFVzCXEPo4or166N95lYn4QqAWIdXvGfrIy3Nd91X.MKWXPN_jJ1E8psxblWfkCL3b_rJvDM.RxDrWiRbaXxqHF0vmb4rVttctW4.DM2ulLk_ji4fvYjJdQghmj6ViCbR1s6a.Lr1sQzxUyEb2QUxfMGthkvrtRMkCYETrVOzGCzmYnUohmcdb2nlbZiANy.hjTp1myFedpgcFWifzepw7HIciwPmeeFrxGjNh7GnwQoBCEb2CQlKscJumUzl552b5D8k.tAdO.0GLB6BznE3RiwKPNmC22gJiFY4AYfaFnvV6Onx4mofA.1_8EsgDWnu.KD7Oqhr8dredK0E73UMRBpTsD1RtwaK2iScMZlqmMsbOg_urE7IlE.kWbVURcFLf6hfogxUfotzbslGJAhEysrPSylCuT5nssvKQ21sWBOaTGjblPOoaHY1NyacOfotytgdgEefcfTgktnD8r5ZBut72M7roJnvAcUi6RpSmSBqJYvdy4OPSOLepYDOQZOGdWwLDBRu8HFYnsrXR_rRl5ySyCN8JJUxttlQKbzEHPVLs7UUfw6CiCp1E.0tYk6Di9cUaWa1g4yul8auHpgxMnjvB5H1BTzzlzqtpGPJdlzIUObZ1jRJlaZEK84deAc7dwmXYhCdJTR68bC602beJxbybz4GW0whwpUwnT3XN56z2rDDE9FME285z6DXZxja03SqWxEd819o.b0z7EOJhYrIkLx1mbvZFqNWdOomgPCpFoidyVHZ2_xq.BxmkyUpW2dIfKrEDHkRrAsT4fmqZZqxBEbPAhdB_DY_nl5R4JGsQqUcx_FRFwiKWtoseH1XWBaBjEzjNiZVrY.WNssA400MIj5vGTFGqLt0h_ER5h81llk0E1hEZFFg1zjB701lP_GrZp_b7yW6Ck_IJABnynA5zNXh38aBnCfTXc6rmE7oIuKf47FltAVRm4W49uVy1p1vi6AsmGhbj91hyfJt9H5qGqVJJqHxupP4Zf67waBU_DNur1qJ1p7gyQ8_DPxtNVHIQhTYWKVpetonAhUwkXmMQppsvatGDXopaoglJJ6eZQMDpxHRr2q6s3U4.gvA1ymBOel_BaJaCWsB3yRuMRlBZwcNcpXjslClwa6sFCWfNZ7dYkLv_vvc07yv7_nU9tgswTIgDHTYGb7w048clnZo5nYDB3cvGp1z1ojNmeyX.M443g"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=9100fc564913c5c7';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\/388622194801?__cf_chl_rt_tk=Kfd3C8E4.KAb3Jr5QqahVWNFPR3ptLhloxaJ2AybdSE-1739241746-1.0.1.1-uIXeGLdMSdV_Z7_8pWf5giadn6VXwli9WVVJqZZ4Oc0" + 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