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-7082436519-gov.caltech-edu.pp.ua/post/324387397510

  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-7082436519-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '910036f0cf36388c',cH: 'gBhgfaLN840fySIGQJKU6OSEWCyMhXfg1Wcj6Pd1wuY-1739233661-1.2.1.1-aTiIrMAVtAubcssVfRMS_Cx0Atp6xGKzdJus6QXc5gNyhlbrF385kJgyjdVvnrTH',cUPMDTk: "\/post\/324387397510?__cf_chl_tk=iBumOwQkToxCN.GwpYX42ml8Tya7CtFMXP0ODqYfhKU-1739233661-1.0.1.1-y7rjIzPpTKp8b8FIOUU7GfJYL2X.unYtn3DXrFvQViU",cFPWv: 'g',cITimeS: '1739233661',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/324387397510?__cf_chl_f_tk=iBumOwQkToxCN.GwpYX42ml8Tya7CtFMXP0ODqYfhKU-1739233661-1.0.1.1-y7rjIzPpTKp8b8FIOUU7GfJYL2X.unYtn3DXrFvQViU",md: "URZbzupNG.kApuoRMOCkliKw2VdW0f8XRpqRyLzQMLk-1739233661-1.2.1.1-NwLmptNxwvqNS1TJnoLqQSZK1CsiXIl5v2vSZxYdbVUCPwJY6HB2.RDaf8DHwjK12uc2Vvd5k9COdAj21ZjwT8SqVnqsWHseyT6HQF15VyUrSyjLqgTFXZAE1EoThSVy_jK79LgdVMLkdLN8bepI_ibWq.T8IzNEYnwjNT1Py_WWIdW4KU7MS5AveqLCBdHCgKyqhyXaDXZrw8Qrs_.y0XtEKApuExdCRLGEvKenKio.qOE4HxprtqgE5F5CTD965Cuu6QiSEMszp30cZkO7uvMZwcqvsH5LB.n4zUhCh.HnsdfK6nspNdsP7XcWqaGNRBNdNXw5MFDECJ0NkWx5Ww4nLlWIpxWwVK_yysfZjVZnvuMuG78VhQ6R4o7RXd3dD3tZOxW25Qvv7pHMhliHWkrd8hS1etCURxywup.FYMRReHvrTfqQ1Z8i95uCN1l8.kmGsd0_u.U2aDbXY.C8Wjk91BgsySi3YCj6Yg3L7lJOUJDhdAEzJNZY.FlMyVsbOW93f5jASKXCmu5L03Bet9jWjzdAww.LhNnoYH936jcnqB9ZsraQHWXc3LxKy2.JMQIPM1lAwqs.IyyjmjkWZ.5ebugvraEGW2PzcPGMvibBbB.qD_lJ.WtfpVG0m448DMaxc4pBNZJw.6tIpFi0mcMiP_QzhzNeflQ4SEBO9beAvytp3_lw2v8puKmUxgKiAiqAO05TdYfXbgtp34SbPvidX7Gmq41WgqJHgTcc6lzI9n6WmmfHZSARqaKMqAIzQ1a_B9anoZAdIxLULEPyri63y3PuJ5EtelIEhXt9i23C_.0ryS21YY.UrDprIXH3UDWVfA1OKcN8Mnzv_ppm9nqog0V.NpFe37_ZqYYiLabWGqKSAdkQKQH5mheCLW0isLGcuKvNc1J1ZPDTFkMmLHjGaAlU2LU.WscdIBwYcrC2SMutL_lG_Muhj8MnKuK9tmq.aw0qouzNz8ITUu7.ApSBIbVTVszhAgRKiVOKUi0LutMnOgxfCaZmetP.neBF1EPps2HW3okoKIwwK.M2qR6I49Js0WWpwOfYkuukZoQZEklkfTy_lVv1IpGyA5rkpA5zqlQO78TPS4Hd1zruCsw8n0BVQbmhhmcfwvh03VXd5v9nDZHHRxbS52SJwoY23VoUAY_AyDjzEWOmGB6ex2nXu_w2ez9ThovIcJWwqIwE5wJYqw2CvHu7DHYg2ywdNAdqjBms03TjDh6WjCgWAre_b_GKvkSJY_5IBeeFV_wPEX36gCMzNiCCs7ohTu1u_yaQXaZrhCwbsoeXYaSV8vq7pO14y1wKoxewgTDlryRC_Rlqsh4X9l1ULpx8kAek4lKB3AeaYNYWTIg0QDAZByJosjWJ7UyzPPV0zIohEEAVK_Uxr4Vy1D_iRk4yYEDeASq3sIqRRwv9t0IoIkw9zxrISn7QeoKPsZd4Bzw5KDA_EeIvfbwqutqswQRBLbns.MD.bQZHnjS6GnObs87R_Vd9jwz1TVuPEGf7myt08QaH9aEx0W3lW9_fsP2bBShcGjfrXWKu1TWBegjkwtCHCGMkjIlpdwAI5JxXH_WLV9_DqSGb_YmRYfFdgDnO2CAso1.GIhFaEt_gHCnnziaIc2XBVb_oPsUmoWZ_2XZRjmf8dRUHQsr.34Ug0nwz5t7_vJujStN9RDeYezjibvkHvJ6gJnR4HWYDofHbOJfpGgQxBaJSpB2rXIq8prgzTgDsmh9UFbiLFWy9jg2m8CVaunXZNZLukVpaPK7unx6R8dgwd91mIQ48rRwVDktu1xLcYbZ0Cv2E5tasIU0eATScTiTOfML7ZTHejwMXviRUb1BDpw2gPoBQW3fBKJ9JB1xNeOwpOizo55y1H.CsICTbT3KtN3qsMprGUbgHpqjs.kMdQ6f91i5IwT3xRCQo0mnvKNRfzhM5eEHD6dDxyz7wdoVFnFIdR99tRzqv6NQC0QQTCnEj9ipTqdHymiDhNAw.p2P0IXB0L6VlUHBqCJrDtEQjzr7EM3opp164ljkzF95v_uSjADVFG7ZtWPsF.IdQ.QsX2VV2cooXm.0pdmUNPHbnDQ_PkAABq0GN7BCPM0hioIW.2GU3yI3fwQS9RjIK_0UnLucNO5L9IUNY48qEXPZICV013hPiw03vc.JgQ4GqaVpAh5e_.YgDCHXzQqGEJAVO3K9JB0.G.h4DS6ApnroLiikiD_M.EuDNv0mRn648fLnvbCNHl2PgcCfkDqYIG0rdTC0j02h2w0DG8vVP7Q",mdrd: "pNASekoAd0bPWwvxEKr6QBbI304agPTYmM9ktFCsNSA-1739233661-1.2.1.1-EWWWAEm5pAVr4RkEIxLegmcQktsJOF.2T67dOmIUX7lV9bUhsiEF5yOnO1_HpFSoL1kI5Zi4i7xszFCSBnpHTXhS5L849V5lPiyjuxC5hF_Fw7IrkYsQK2C2RCHDo66p8WEstwExxtOSTL_vHHTF3m44LF9oFDfzynA4ckGjy5pHCujppm9nfe8zOgUPtSdd.i6J2xnGwDyNd3Lx8d_bydKKkOJ2AjWGojYtRCPL2m7kG81nvb1d6TPSVBMv79OM9gRKIZPTXEwY85ISbCZ_h4GKnoR4wBtideEcmieQDSY6QPk4iZhbJNdkaEOFkGBT7Uhdw6vEUCaaluXiiXun.N6pAhNr8_7A.A34UnP5YvtV2nW4acyJNK3WXNDzHPhdTS0pbPKS6XnNBzrY9TWfZKNdPssO4PTu4arD9ZZWTnzmuUHjUdo_l1MjayFyqSVLmSBIdoZFPpZQP9Vzregz_8XZdRkc1C8_sXrnThbRw.8zahGB0xa5z9bKJncUm2GF0gFi9Puu4qafELww6ShqiDc4c2UEkQSdBP4BfuogM0gpa6a8YSomPw0g03B5lhA9Wt0Vul_RivlyMV1vTDZlUgMqsE1KZpd9G6w8X2EXlw0B8UZo7nvTb6DGUEAX2WIKx5KRlkEOqtqwgzx11EHxccb1I2tcIF4gvn3lo5oyL7MdoJ46S.dzun3EhVNxlHZ.552x1szxc9QN88eZhL2hr125zVe2Bxz7jOo4d37eEAEBGAToMF8UFRMmNmztVECjjL9SxgnaKSptvbyMI1jKQm7MKTeK1CIUqZGuCI8_9.Q3_lWkPhZGi9Ae.2goO83FyFnzFGrZw.ERXiGQadkmPkVucE7xDv3gJbFcBGfFnaVRL2jmn0GXEMjUWHtMWl1amx.myuVnIt_n1P1WpTUyguXle8IJukAvhcP5fXKqxnpW9__mjUsGjNT1ZCSjUZDOmGVwQaLloOFEuiXecFB8CbaJ1tGFhEbsLaXpEac2CY9YlXOHSW145qGDsP21ChqyB4QrBTZLLXmTSOCLFz0T.nGIQCTK0Qv71r32Oi61sQzr4ND8.OGbuzUEFYzQS7mm4fI..NWIZt8WqR8DqTjavBa_oXj.2oEY5V9bm_QY9mZluNk8faoT8GmAsO9QTmJre9F1Wil_WpH.bXKOIX6tkGX29fHcbtSWcPstLKtpCirfQZCoYW_g8CUpIGoTfva3SlXF0nGsRXzrVDa6E78kPFwb62poy7W44X.RVej_ylK1LX06CvKlR1_aTsB6vlKL3rDTv5j8559jljdmad4Mwk.ilOMEmMVjOu4DGUwIDUt7sEg7OU7hspAAEwr7NujZ826bxZrOWRsk2VNDpkTz1m4Up3u97hIRPfdmdIhKOFOQUw5GAD.0D7C2qzCWWi_xNCMa5dXkLveQNSzbKvkJRbH0vubS4qsBeMjkcHmHZYngpRv21qN5apGYQIwB_WvuXDF_sXKseGX9wP8VcoGfPos5k8vTPGlBXZHvhtDVvCwsSpQPI8rYMNm2LwluqW0CA7totI1pjMGaRUE2SWvynQ.9qEyu0s_dfXgZ0JX2H.AkZTPpO5HW5GsN.cj83psrwLr5gXEtYivX6SiYcoun8PIjCAJtzJXaBVCRcFXI4m5NnCF4to_l08DpI2Q.zQgXlu_tTJh4C7WgIdp4CMHSIrQalkOuZA0hJ4wmptyQTkl2ehfE0HQOosOosD7m2xTfp1_MJGhh_vpi2MUEuDjfA9hmHjimP4WRACoDPf0W9xw1bFIPZaC5HbIzBHfIkBFI4W4SGIVyl_sDRpHvbaydoMuhGTVWwGAzGo3xkf9XMcoWu0T9364NSyP7JKvJ170ypdbStT3bgeK.Hmd7aiavuA"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=910036f0cf36388c';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\/324387397510?__cf_chl_rt_tk=iBumOwQkToxCN.GwpYX42ml8Tya7CtFMXP0ODqYfhKU-1739233661-1.0.1.1-y7rjIzPpTKp8b8FIOUU7GfJYL2X.unYtn3DXrFvQViU" + 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