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-0316248597-gov.caltech-edu.pp.ua/post/0316248597

  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-0316248597-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '910ff492bd1dbacc',cH: 'Imyds3BaneOAHKfSEijFVU9zXqaGKy_XPZo383rbX38-1739398715-1.2.1.1-V80Kw.0md0NBBNaeEcNTKrbbMPzEAmxvh0XSKwaF10hiE5ILmCq_rgt4vsmdGwS.',cUPMDTk: "\/post\/0316248597?__cf_chl_tk=s2yNXigFQmwYLXOzMrxeZlmlWvKqhvAvRmAf1_3wEI4-1739398715-1.0.1.1-xeHyPg7WZq6wSys1VMhvPOhJ2D8KIzLIotGR15sr89c",cFPWv: 'b',cITimeS: '1739398715',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/0316248597?__cf_chl_f_tk=s2yNXigFQmwYLXOzMrxeZlmlWvKqhvAvRmAf1_3wEI4-1739398715-1.0.1.1-xeHyPg7WZq6wSys1VMhvPOhJ2D8KIzLIotGR15sr89c",md: "zCPHnejXCEedvi_e_icPditv845aydZrYMU4aFKnXaQ-1739398715-1.2.1.1-X1lw0JePoxM6PIlDcELn_KJiL0SbCtzq3oSv2iXyGGFZtCG5z4icmlXZVbpuF_AXWqnRm0jAw.pWYYqK5Jl3MyVUpWMxjSzDikUESsgCIg5I.o1d7IJxCgFhzUdnf57CURf9SSW2D3mRRKdg4DRHPRoyXZQPFfWiHsO0Dsf.wFqE6pMgxw.okHfPgFBAtonZPmj5nTunHbxLnTHP5SwZua7T7DOze3kGI07qFgOv8KD2_TISQgBw3vEBOSf0FQrAhm91gQZ.PupnMTL.9v26uu0u1Kc94UyJaImtndMw6SyWMNwOalRezZR8u.WbcXE9hVp.BPqSA_bdZlAdc61gkg6isCspPaG4WVrlzXErBTYmy0jzWhTl5BZLrP2G.NbThR4eXJRPih2Om09lmCvV9CG8GoVx_m4lFjsdZKQHHMulKjUwBDAeY60_S6Gw9MjHEY5TcIvWuv5SKOWiieBRMV7mabdSkCRjT6NBwMbA2bMdQusa763ObYzjZEtVuelYdD.SRKtQ5b9uU1KWZ9umucq0gknVoXOVBT7KklM8QYWYmyhKc5F5keHU8Q6DKDoPtKcV_ilbizLVxRNe.ysTdw2tHgmb0elszBdcCvOP5lKaS0wwHrD83g2Sd5BoFV6CtbN__Oc5XZSc_g1o9dSaqBbOQExK1.ulyl.9C3XzUevamyTi7ShS8unxSsAoDpnvR14zqy1IXORxr_E3gG1UvC7PbJouO6orXTVIqlHwa8p0FH_hsj47vCj.HNGTMSEB27_R34AHbKuKhEHgpY0FoCgXQW7UcPRsuhJGU3Ah6RFTbVw24yyrTWjDVAbdgUONhoT7jJQmiWHv83Cz32eAqhVMGxBdgTT5UKUOKWulSaIVb68c6jD9fzkEliv1U96wxj5CPlw8d9__e8CdROzGP6dCAJzVRh8tAvIMLqcb_4LXnEVTv_au7YAgNkzBVhl43ElSQIkWCYeFRNLXD2kMfzBYdt15K.L4q5BrIG2gsgV0JR1FwmEH0tyBrXocI1aMyK.cfn8F28BTRilyyltLgIYN_0hZC7L1.JLc0vBDKRvdPT.a1Mne8mM04gTyXnR.ZG8I8ssr.TzMBowW0Z.jKh9jTdIJM2GP0HTEiVtlrVjna5C5u_uy3eO_7qhT542qm3gnR3xzXQMTc60_SZi8hsRhsS6Qc2rCqBT.z28lcrctl.ZKRnXQXDVWpPhScuyfzUiTW5LHBeHyAcYf7dwYkDKFP02hpXxUuReqmqHObHVrrSIEvZRN7wQdqKmUa7_rYKX1a79LEftnwlsXpVuBJdNC1OUnLYx0USqws2mw1k2wkl2jHUKkt47M16952j5pbGzr_C04mA91pmWKkLQwdjTuNxs5lFFYFfEvouln5Dwi6bjnF5tOH6fBId7pP4rdRzY5nk3PraWYdIi1X3MfbZ.s5HEmUb73k18QnCsnmhh53mJB1.US3PLhh1Zjil3EBiP2.cXyHQXa_Ri6KXv76zTm8hjdAMR4wsaxczDoBfYTVJ_URJTSJni9qFIYY9.H1m5r4QvsL10NubcQRvuvxs0SBAkQivyclsilgNRJC3t7PihH1d2rzRx4YkklfsJVvFTkytHYVAuZXGC4xnjKKJaKSUA4H8v1MzISASf1LZNtuNkx7_gqnryivIcq4L3MhEcbei7jpOXpthIfhA3FVzge3yQqsnIIlbCuGcJAMbNym9yoGWwmHtpsOyFSvBnAOb5TAos8jARsslXDMUwfk1SnKwNuW1bweA8vVlhoYAnoDTXTFLPIdJHFOMcTOtPKrroO8i5aic3_VpVqx2Gz_ns0eIc00E5Uh61HppIWRkD0us0LqJSRXuMIrBUksaFNWswEx3qtlyV8EfJ2L_N2QrcfO9RCJm9dZ_Rz1dbTSR9OIvQLJ.FUdrAQJIlY4Cm.oodeMCS1iU1xfwgNjdrNikmsFU7rox9RanNIsO.ZQS.StmUo1Ejmh7LXSSEHLGVaQJ2Uv6w7FamwBhlBgoQgdQmxrmkZXhNTFMQwm85kdNNgh30j07ojEPvKrleptk7gzIPVzR3OK0hAaOcfzY0uOcNbwXNlQ9uxHiYMmDMz87a1A7SHsFppsLAtRQcXQnd0IVG.4D6EscN1xsveRy1BwO6MuOcWmxHIGI3mipyQ0eJGmG8cM._P7zByHOvUtW4BidvOH2Fk4ZnXQGCYf97cEgpOXt3jsXmKH2raD.FpfBkBeGZ_WIReC8w34mKt8zACJT1LhPno7eRN8wi1h3YfkQ",mdrd: "sZUGauQvspn0hEH5TNf0LJdsabGwtqbqtrebIa8YUqk-1739398715-1.2.1.1-WfQJVmC4BM6uln2w0BnXNPy9Y2xZlrStn7YcuZ_blHw0xPvqFfFUX4oGAzDAKIyddzdaZgYNpU1ClGX_Utg8N5UrrZhkMd45slxinamGoK8xAPweK6Ch0vayWspOUcxqGkEs2uIgny7NUoc.kMf2DyEfmCvhutwcY6FVuLWpL7t.7IvtWDO2fFirWvgXftZOw9qwlQGGnoCXuZQm.rvbwGNehLDHZQ9FF8EYWpl49yRmw4mA55Xx.ZQEr.C5uQ7ebB47Gz9bKsazCpLkrhdY8WQWqXXfdVNf4oGDttVjeXRYJAZ8d7Fq2x6kjoVAEUxKAvPPIyIwh0U_5uxbpJjrRv8CeC2h2doZivGLwGfwcIsA4lA8KO_gHNmiGwIkYGa8P8IX_K2A.1kDHAbQgjmkVY.0btt7JUAhyi9BM.RlU82mCRoaZe3_NUV50NWgneYdmRa7GmbwnUkSA2XBNrMWwdT6JfGpKMT703firP19vaclLzqk8uHlYxHdL59JeakKbxXx1GAn.InM4.fsl.khGL9AQk4EBoap9am4clrCZXtvRZ6ZwMwk0ADyU5EmBn9VQ2Nd1PfMCitbgA2k5xHuS7nnknkkZjRgtgR6fcU405rglD0GfkUX41QTqdz1qZYkhEMh8QxkjA2BqkJmmi2J9yTjfRANIq5GCvCrY92ZQ4MqddMXetdRqyqWFgmmLEwI.In5GmRtNZRrutvVAsLIkoITSsGJlyTOOho4megDIG7RDLoxjOwrwBUjUMkjylRreN0X7k9CbPVPh4o8coU2IPLVWa6PmkF1u6O3LvkpLNQfnbDIvgIX_hI_JX6OjR_ah14DUN5.xxzVKR._mpgBD2oas5ZrHGwgpmYt7HU0ePMGVAjoka02F8kTNAZk29vCV9NckdQ5cEJ_scHKkRYGLrUCfsjXSBxUDo_QWYRfy.vGesilRPLlQXF2.FgUE3pD52pFry7SDcr3V61AHBmlLUYf55zwxakV9z3a59gMdbW7CCXinVI7NAch.lTHR8ZTk.VNmcNKlzjZZqmDZOq3aA5rZZihYH1tXtIzlFqQqNwK5nm7DNW7t3xS8_bKdPf_7d5gtU6jO75yDawy4ZWhZWOR3Fdfp1jOwq5ybBHCvFYZxJcIRtaDYuse8xS5MeEhefrIrjVeZoHmgrAC_OoERV9Nt9sJBlEfx2tN1JbFCTZYQZBxKBakDyXNaxMxxq9_BVCfHW5bySsMN.FywlDfrPcZsofqcrSFz4al1VPo3cqhzD5JCBPP7pabv0x9UbxFedtqOELykmNhcn9.RR9DnBdVPWq1Bt9NOgQimCXkphFtBaTgM0In4H_TnUFBzXUEbQ31uDo5JWidnHC.2kvRQCA6r5_zUiuBzc2r.mAxVvqSJjz36lPwBfYCi5iRgntVZkJu.m3ujMOWy5B4Nbx0PUMAvvxP4lmqMxmwxjspwSyewvtHQ4.DyOaQMk6FcT7ZCJ6dKcMmadwHK1ToJP6k90_U2xVW.dPEH.U.fs3lgwyutcy9yxWQ0bofk8ZAGg9KW2Ud2p.zMs_ENTg7PZK2WKP4MP9es8ODcb71Wsi5PJAzPN1ckzGKnZNVdsA6NWSRAiYAke7MkuX4qKf3i0LHpCguQ.yJGT_iGObcn1b42UJhgaT6yynoWi7wC_btjbCFHuPw0tU.0Z1QFRKJrktaezzWxx3ztM9UcYvnYBhKLytoN.Kl7QgnwmG2x23afPwVmq2oBcaRZggjvYC0VS6zADd4ArthVtLKehpOxBBe55wyHJeutYCjG.PPjU9A884h4Nb8FKe3XYY7h8U7CVqczzGGXS38WRMdruMqTDUqKZAgQt.4rwaEPd_2nxv3.jvW"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=910ff492bd1dbacc';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\/0316248597?__cf_chl_rt_tk=s2yNXigFQmwYLXOzMrxeZlmlWvKqhvAvRmAf1_3wEI4-1739398715-1.0.1.1-xeHyPg7WZq6wSys1VMhvPOhJ2D8KIzLIotGR15sr89c" + 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