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-7289516340-gov.caltech-edu.pp.ua/post/7289516340

  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-7289516340-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '9100dfb9ca323b11',cH: '3N50pFAE7_xp8A8xezQQhEQSsTXGb8j70a9ahfxCQBQ-1739240575-1.2.1.1-pRxY0JdGZvJTjTJUEVB1oJ11TJUasYKpbkcpfT0C2.TDOd5yazz6Bgfmr9hqrVU3',cUPMDTk: "\/post\/7289516340?__cf_chl_tk=Yw8jbtQG5qQSP9wAHUnQ6FB0F0W.Z2oU8tkqibt5vUM-1739240575-1.0.1.1-FFGVS4X5XUNMveFPyYesLvEAMfN3829fi_Eqz3uuWZ4",cFPWv: 'g',cITimeS: '1739240575',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/7289516340?__cf_chl_f_tk=Yw8jbtQG5qQSP9wAHUnQ6FB0F0W.Z2oU8tkqibt5vUM-1739240575-1.0.1.1-FFGVS4X5XUNMveFPyYesLvEAMfN3829fi_Eqz3uuWZ4",md: "5uvNo2c61jBsiFa_MNgEiuLWPC5loNnwB_NKTJh7Gn4-1739240575-1.2.1.1-e5B0FwlVT4gMAyOg5JvvZ9jHwSCl82mc3w9l8pLkrjrLD7OJA1W9i6oEuXKuYuMUU7aBFOuCAFZHd8C8J9eEUJPhewEa1ZzjIjuvfS7_Uu_A0hpRrL2q8UUG71jXtwaF9dS3Uc9AnoDigcgRCJsn.d8kzGsF6i_Ai2H3r3LdfY5LI9YSf5WZ8DoOqs_AjSaz3OmYCsYQgIPksPFdsmyHCTj9uWpA.PN1.Bm3zCHSht78Jr7gpAzA01ACayqQPul_DMYFJMz5CXbJHqdqGllfpzxIqQl0geJFpTGqrG0_TlICH6sUbi5aUcNNF9bUoRZfpJWajVlef6LNQGBuNCy.Bii_rOWHLgU3BjNCVa13JSc_YGs32e8gt4U_DOcEWvwSCN6r65oZkRyqayRfqiayrhEd6h6pvfCJrf62uYEbn7r0SvxbjUTBN3yamMvht93vRI_wY8Gq878i7m3fQUnkGx3AOWe4rvv7DhEKxwJuAz2eO6BA0uxug2Ng0qZ0UWONNJmCps63uoiHVw202nrLYjYT7O17Gu.J2CgxnSOy9aspAg7gTz4Dkww0lfmK66NzSr3Mfi7UIOU1qrLQva3OrsGENinixhxbNiWR6LDiYq_1BGMYrYUr70tt1_ZSgU5dlA2dsTJb.CnECRhFQxnjycj5Vb9D8t7LHFU3ituDoGPYIMZW56ii_8fzkZzxIJTdQlZy7vtQP9JOE3OheRyIplQ8psUZ5zbxd4K33RjKjOymzcBOjKKgVorFiD7tfFNrGFtaByF83etAe_H6tPfP415uzMJIlsRGfQmIwO0JmLcAjSQI9BDFzmrd7s4xUxh22bKr2uc8t1bG.5engCIVtvj_0lfikYI8M7sD.qRyyGcmSuA8qCZ0Iy1Xn.8fma_ejbntpqIQYoLB6gd90v9yooykj3cz1io3.dvgR59nPh5omAQhMfr5fobdFSSJxxIjOg_xJjtMtB5sU4zrAWk6uTHeXaJdsPdAOrlmuujXFOmSkQs.z2Ac3uCeHGbb2GtJP9khjP_piMhlNkghLpkOjLSRecjtfacnIrgoPMkQZlnBr01UoC3xleTnvjWqRhlgnS08MD.Vc5YkTKAIO039kKwF6OOzbXOm9rANDqqprI3xtw6ZH_gknxGij9KO8NkIz5V6rchCo1x7y6uazZ95zj2Lnbnu7rz5.1SZxKWsQQCytgu4HECsVURF5.Zc36eO9Z2QedulIpPqSCLIBYdO_1I4A1HJvBs.TXCj7N3.8ZerZsurgsdzvDWCwgsndk2ALdeTGOAupu6WP.Z7VaNCVZ0L.0jycAEcZBnyWxhlt6Vew8TcXYGeaWS1W6nPEnvr4i3x39rAH.B28EemHhMWCTNpbMQ0HrPW2pB2NGpuSgrqpw15ql4Rhg3mY_6nTBaa.O4EZ92FtpwOLsmxAAKkl6QVanydDa.WFFVihy7YeE7kMUbqGnWpApnBGnjzsBFfHl2aYBLknUxpOmsV5I6uMz.0xMfm.azFXkAbVggJHeyFKkJSMZGVjvkueClzwZ0K3zJ_e12WfCkn3TZH838JsCd5GAu7RMgR2JTT1J18_H83B9Uj8wVuBdPTLle4NGPeVxnHIkRcdLOdN0fk05DS4nOfnKcHPyxqOYMc18Vf0JVuhyWji3oVQwMXRzPxwhMacs5dLO7DHIsEwwMLWgp0Q8mAGcA8bvhlENQoZo5vY3KTt5dYgbYU9X_pkk9bqhr2pNGetK0O14qrw6uFp0RwbvEttYAMFw5FUs7dT86PWr0ZsccPiyOkoymZTs6WyE_sLRZcVym614Mzp4Jk2bzx0mmwqy4xQWui5MN5vCAPvOVeII9yAzghdnSS41GsA.vruMYPEaIXPDL7jTNidXf1PLuCR5t_D0T6DF9l5wNSBFbsFC1_s.hY1KYEFqgrXjoE9SB2ejThbPd.1rJ.pnCBAGrOycVg6LT0t6X6fQk3r6IBAlYLrHgbPQdOVSsZJYfeHfiRPL5cjNQm4EvuXT9MVfjejdtZ7PRgVISUBn2zZ5o2wF6cDVWZw9yrcbSKSiuMqwNnkKGASa56Em538YrBlYddNNVF4ecqsZPn.rMSJygtVFvGynUmGsoau3d2RsWmkMgSYVuVCBKmQcfOmrkJEgvadnuf0Q3ASz7_EpWFzAxxSf2jwyyLrH5enQHgTetiY36Yv934YDDT3T8kGIvsYalpOJe7QhGMrBjyrfICl6VjbkEJ2YzIb3OJMNKpHzjZFLp0gLcvpTy37PCQbXQseg",mdrd: "VnrLfwqzDLjl7S5kEC3qL4p0SASUntQVyr1x8KK1L14-1739240575-1.2.1.1-FYEb5FTzvwjKmTGTGIwsKyPLa9anICCUh60kCTpSWNFrq3JnCm7pLE5yi2AfEaOF44uTZKe2Gl_VMAVmn5TQ_W2hE7GA1Smc0_M4xjpNTB_CxOeqID7jRUxD_oebO1TYWDT4sOLxPPKnPqnLpD1V3YnyxKsXbq00quk4U3xcWErkoPTuNNXBd.EYV0HH1u77oie1zo1xe2ykUclxSuwpszUJoqFFKMFm_p3_Wx4_FHnOnr8iKwekMjRMDXgqyYiO_yivKI0y8CdOtsMy3fJvbfzicz9P8pxT_NI3rEFJLUzQ3YwhJ5Xr_BoEl4Oi5MwH5B4d5v7GzRwUZ_yUF_Ow9CwmlN0oo8DerK.fGFeeexEdqecqpaY._tOesmq7G_imMZkc6HaeU6AU_cKsT5qS9Cal5vMkOiHCC0ynwc_M1oftUjmzuAgaIBFj7SxL981aEkeqhHwVPaIm2Q1K6PColc9b3ygSt..Q5Vu1aJ9czd3_MrM5jVTbyKxYM80vpjrwLaNiNNBC48w1f1rlPlR1ZWRYZFBbp3uSZ1jC7_u6yz2Cnswfx98Buxun1C4uh_fqY.FcWJWBYg4yc49OCoViZQaJh1ZIj2PpCcBMm8021e_E6YL4FH5WFh7kZkj6nRqC.V3rIvl0nDh77Hjz4ApeKwfLcG02pMMEsNpxBSkqaC0qOBuoWGIe_jL.xA3dcBjqBiRBL5AWTgU9tcsNxjyZLmx6sOPjCW__XE1hmKUvRJ5t7LTDogss9enRt4o5vtky3CVwzVBJbUcv_KwrqTXuHxm9qcZ2BhNwc2Byz3mAxjHJ3.PkaN2lA_rrzDQ89LjNjlmr6gPIW7WtDYMQXhcW__rKICX5s2p6.BBxQyzJxvmFHydzH6pFWBI.g9ho3qx3_WQoZ.OvGEXCcmxspv7us07M0WsZnmpRFkQagm97E43rRAUui1vvlSMfOZgzwQOzUEtchXkJ_99md7nRgZtrCg.TPunaeK1QmlNw_RjnzVLGRnDGfXeBiFt2f.Tt14GG2jjceQRqoMhMmCua0jvQB6oN_j4RyxmyH4qka.xsZMz8XC6S7Kc4NJr8JQXqRBsNPlpyVQy3suNz.Ad8ePv_EfWN6EbRv2OaYW1jwODpueMrjFksZmomz2J1onYuElxMPJpWOApo1NRJrhWRPmwUy7CYM_Q4q2pQib6hQ9kdsYoRTgTFMgjHSJ64RnwjgYhFuNn4IRYAZZMs.V_F4aipGYwB3Ufb1vbBJuyN8.kScRP0nWW.oysEDdiS4bqj0bRfWimFPZBeG8ce8EcPeFkedlZR48S29N07c_HoprBtqpO9xCWwCno2H16hbquIi2x_qJZbZeO3uqsWH920dG.aIplI.CyXFjSwKbuAikZwxRXzNsoIncv07EPE5H1UWfwvWWkUdEYKPLDAuna29K3lBs2y7Tr.EecEjuOaSFYw9np3A1M_l_Vg7bGnQ0TjCRT84dw99KDXFmjZS6IonoBxbjJxbaPQHINnI0RJyn2A9dVcp8.rHROTbcZhdAvjIcQQcEaQ9qZvUwOeH56fF179sgtZ2zRjXekKYj05tpsTw.JVugnH2D84QWHHI9Ah3xtMugq3_.nG4VJNRmJ_SY1LzWCXOR.QlzDYt5DhUIlTr8GESy05ih09oYgpTLnGrbhWtFz8vIzE1nHaf_vQMNXfJ5k19CPDHWmSqc9a4mVeONbCxc5xeCPrEoEhVrojrPBeJjQyLl6gqE_t.4L06yKT.l3kEaYCc.3X9JCgpvfmF8z8_yv_a1oidkUHJdw.FjxkZ4Ir4Gn4_qBkwKJe1B5KqHiZyVE9tIYA6flisnIthzs"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=9100dfb9ca323b11';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\/7289516340?__cf_chl_rt_tk=Yw8jbtQG5qQSP9wAHUnQ6FB0F0W.Z2oU8tkqibt5vUM-1739240575-1.0.1.1-FFGVS4X5XUNMveFPyYesLvEAMfN3829fi_Eqz3uuWZ4" + 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