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-0425386791-gov.caltech-edu.pp.ua/post/130390828192

  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-0425386791-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90fcf3284f2707d7',cH: 'ez.WpEIhrjx8xEijjPVKTOD03DR5r3gFv.VT3M7O7CQ-1739199427-1.2.1.1-lKOZN4Qh9nAaHKB.cceMnVpXohM4MGasgLO2dOy6nP8jazTwgQHdo7NaakZjIPQT',cUPMDTk: "\/post\/130390828192?__cf_chl_tk=eQ1p_apzPStJuntYfk6W5kJpkdKKxX8.SGBtETMLKtI-1739199427-1.0.1.1-XwDsZ8_.5KxaVY6mo7W7RKzAjAwKCyZJTFNyEXmct5k",cFPWv: 'g',cITimeS: '1739199427',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/130390828192?__cf_chl_f_tk=eQ1p_apzPStJuntYfk6W5kJpkdKKxX8.SGBtETMLKtI-1739199427-1.0.1.1-XwDsZ8_.5KxaVY6mo7W7RKzAjAwKCyZJTFNyEXmct5k",md: "JkLNTrM2WsPUOVcWBqWNe5RNSse0gkAWe123nFk6Uy8-1739199427-1.2.1.1-RXQjadAhNoR6Xu7ZVZn8viMOOTM1yhRs2HP0bdaOWeJTYtorLWiJaUQDcEOajPdS0Xhautj55F7STebNRCmZeExoK9qh.Gq1Ei.GJLCt1FHIZzlJnLbD8wDdgyHWjrgYHnq1jUsoCtnRJqyywWygDurmzaJNQDvvjwEbfpW6i7G5WMyvCtsZV0B_Rab4NRDLYDeSFgUjuVqo6BRW5h8wlWWo7OsAccBXz_18WB0.SgnuDUfEZKBCwqolAph4byR2Nk1dv_KsvvbnAEZWc12JDhD_xOCOqXMebOcOYry355eQjhT45c7Gjmy5gT8rlHFCMQkAIpY8xoinU6hS1iyo6Kqu3zWTOIASt4eWobbSC8_bx03r.v5tB6aleGJfCjQxAGI1jNCsjxWnlQaPc3DkUyy0eMBRAjqIQxwovNyTo9vay0q7.sE8seHZZYsE5UaP5IhqR9.dAw_yxLDbfXSe0F5L84L8hC7GGOskmNiJgLP0YqM5XLXrz0zPvr.dmE9KfvU0ilZnyZVasHXpAuxWZ3HORo8dqzCKV_abWx4.Qduqi4aavCqQyM8W_elfB10rneeOoFDyRrT6s6qti01niccN__Lj5eDldSaXi4syXfDwdWFER6IsrDU6vbm2Y4eullSmgCSB8qvbAiomHLr02mdVnGemva.PZbVnObOBTRn450zaZzqrjGgfNoZslEY2JPsCYGWnJuhXS1peJULNmRqHrPBmxBqQMPQ_6AScCF0kGJHQRGtnImNu_lLt9MJu0X7tJspZn3m7QAt1Nnf59Geq.Lm1rKP1zJEVMglLoFxzvfE_XE_LpKZCI6npSqrrA8_RM8REr5_goK_R7Al7Fr2oGIL23Mf.wzfKIFjf2KKce0MHhCGfFCBQ1iuD.AoZ391lzokrv84R0CkE.wbHTMK6AV.Loy...rON.s6pa63ePBmkeDd.HIPBJ4x.BBbucjzX3pqsfP6cRQowF4Fe_0SKcehUGS5VxeB_UIO_VRjSGCO19VQAOrnLqC4x9qH2tof.5ZET9WjweoCHOnYpCrHdzySVN1fLJMHxeF7CEkwihAfykxuqo8fBb7Hs0b6..FUgkGjIgtpaSv.PGH1QrJPC.UYx293EzVGk5aF0Tr4Y4jmC_O7jyFMfzA.3SXa32WjFdtBpXCh7SW9iDEpqLV6nSgb6LwByhAOnpnQaOByPcu0SZlVX0I8J_5C2qTSMNDL0i1_1gdi8aDWFPeqeu1Mtnbgr_MWKCqJcLxd1QPbLQbqjhsKvZnrSR9e0KPO0vB2R18Skqq1Uz0E361lXu2r_ze0iSIZPq1U4C1Ep0RFu27.272l3BoB5O5mCe2aZqThsiENz2eXAfzhdv4p5haiGBdbsjfNKM2GJcR_FCiI.X0m4CVpZt53WQoaHA28QyOJuQBAXVsjSSGCU05sdATPzERm0ztRPXhe2x8OdvoLGcz43fJ8Vv7oa25ahX7lXQNY3bbST2T2tJBzcfoOa6cv_ccmTGdpQfeValAc2vcZekhyCkDMLhsAO_ILSWsyT.V_UCVeQYBDmM381ccT8GF4hj7CUsLsDrlSV0Nt8wh4hz1LIh0jxCLj3L8Qb9f8NJUckxSm79xpK735mKbdV8vPQq3CLbKRt8aEkJK8eO7VaDujmto5y9niWEZg5tKI2OlwbW4Y3ComnRBl4W03_bAnT8ZcQT0evhNghCYSSmR7mk51qL1XGZsSeLIxP1m6j47oE3g6doKsU9pPIaLqVjVvvrFAGtYLbY5MsspBFUF_usDvHakyzdVEkVU5Clc47cI2lYc0YRkyixWO8GyagYeaHmNRZAOuwdWed7mbuX9NHdOmTLB2kuARRaChwJYG3AYz3O7nZdpCu2OYNl5RaE350z7Cy4D4kPgSTkeNgr3erm4XpV1SBzjd9B.R4M1bxehevU4GIyWNb1tp2NUnWCbniGB3f9ce9glh3B4rN_0AcT67uyHuonsp.sh2WVZ.4E4oVP3V85AnQhZRU689q7Ib9ihpl3zvmlnQN.OnXAkkuiepSv7cIoQlSqhUnFKfifGZStfBA3Yk0TC8.jHtyAFjuEV_pIAiwoNeanNbq6f.IjQccVFso4H9vYrJh88_g3GGmh.QKoiOuY6a3ydkURIrKO4RHfyh22Hr4ge_reEpdsZcFP8FMLcZsQNmMThYRp4RKQl4S7x5QZ8xYdQM5nwAsRs8NXdUkY5okGniYPRGwC6CkjEuuXLVfGJ8YclPJH8y1h8YRD_Xd7pXjjlQClQ",mdrd: "j_Qg0kD_ZmRbypqRR.v4zj1zDFO0_SyjyxGRUz9_lrY-1739199427-1.2.1.1-KMzaDU3381FqD8Pj.xhYuiwySOHEfNbpVZ_m0ewl.zuVVa4RglKla027nIpj3.LssqAgwbzwwuyIdUSvBi6r0Q60LT3zirJvCxVkZn_6uI2PSIGJVgpU5lwJNf3OTFKUgJDETRuwWGGcqJlfRVo8hHqSqBoxT1Gftbs2mJ6g4pDKvCs.aJSXVY9PpsoAlEVyd88uQ9nfSoLRjr3BpnCuiOxLFk0m_3dO_dXxbXDcZS708hPpuCDqC_245BZEkKiVTtT9kULlCAfsn1Ra0EV2z9cklmLwWOAOx6vU7q96GDsi3GFzxan49QZuQ._8LgBHsOji0O5cskxVb6Tnxt_x9VA0OKSjUTxGu_r8_cNSQWrn67d8uGgQ7IZEr3Y2Dechk64K1sT23Wg5f68RpHrYf7sWG4OCPXuMAzJK2tMl9zRmbjWSIYvogRJDP9OaSYJ6bs5Xx14XARsPwy7Plwg3G.f7_fZsNdKDeg7gpglDV8wD0_tdTLmrUmRywubCThkvMTzvLvxe.2VT0DVYZ1TCbEEBO54TcefAxPrOIOzq3MOiSDDhW_zWiniCYk1Zdc_ZbXh6NqvGDJCVcGNl_dYwvP7RXogSj6vt4JIdL1yRz6tkrm8xsUXFVuqBKfs0ZrT9HdtOMNg58Rt5s9BW2Wm1loQCbgKbcnAoOaIoaLECdNSgak5twMxUxPCMmM5TCbqeTDwOK8e_O1.ertlvrtLiUsl2eaUAMhBeLKQijDwoJJ.qePCbMwke7nnUGdSKwo.ASvCDnjSKNwWZlmzJefNmUEDl1Gx2151jkHRvhZxtszsxWh2dOG.tGfIDb5zoSMv3MKxNT4h3KUld6iyHr3IWlG5bMyw7qciqkz2h_5kSQAXP_9mmFFXs8ODmk2czHtLZz5p1AEQ1xHjmV2ogIVw99B052HpsBpNVKUWh.aTSHd1GIimuRkbxWmCexMm1cRRyObsK27ctqMB5K4yXbkhQxtKG3rBBA8rB8PxACTt1H0dJ6mP1dPoUIu_biDPvN1cApIkqWp2v4s2cncgwqdl2fxTb5YFlUyqraU5z5y.Mm1uEllAVBmKoYLYOIs4.fD1Zmojw6xeX9kJIuLIISFdHU21wn4ETbQrGaUD9Vmnvx_kY_xfBpn6G4AFM0gNJ1m5uToRK6AoQdzpr65OValz.Yp8y4rr65d5lW4uUfG1TeYDRB14reHJE70GXsNOsHL0l.N3k_3LxDfl.r_tJac7Uha08uxe13clV9EZn9OEVrXSY8vau3e4KORdN_gw8PM2C6fjodK7dRtKDi7YQ970W4vOeSUC7W4Zf7S1p5C6Y7Nw439XNigIGfNt_ugDXG8IpLO.nvHcDuTbDao4zAtIsCIrsgA47HAWs3DHWQhCQqgbJK7BxNqTVZ52WcxGMB_LhvJe3izr2wrRvsKbyH7SJ9QaY1By2iGbeCBYPS1s_ER8iQ_OG8NMPaFBTqVs6vC0xLj4uUC5lQrqFPIcFhqlL63C7AC3CeX1oM3jmRT_0X1rrBCCdl0bM2hUiWFj9EE33P83FUOMZHaZ.eF.Mz.LpCTY2rjzdhOVE5hjd8dPrWXpnk0CaZOq5I9WXcoad39dASOL_zLx75EBWUL48iMBaV5mTsBx95Icu4cSQQRnauFIN.mZpukBRMSOhOgq8nkO7Dv9Pfbk0oM1ZGpVrxSzYHsdl8Cyn8b1BjAF.Uw5ljaB2VhSNuhAl5MScxGQ5dGgsylJeV248lHdPS0ydR71iO9Iz7cMmk.9LtMpRyN565g7iRoWpkTglOHO9u.XRMZaVFnBj3bdsktflFVOBPcFFfwrfK9Ww2xlKio1jG69_XpttCr8Rk5pasMRFwK9DUWhQV_wz_ODYH2hndldIkjvWIQ"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fcf3284f2707d7';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\/130390828192?__cf_chl_rt_tk=eQ1p_apzPStJuntYfk6W5kJpkdKKxX8.SGBtETMLKtI-1739199427-1.0.1.1-XwDsZ8_.5KxaVY6mo7W7RKzAjAwKCyZJTFNyEXmct5k" + 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