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-6275180394-gov.caltech-edu.pp.ua/post/099385011182

  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-6275180394-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90fe6056aae9802d',cH: '9SRosonmdJA_ch2cCmghfnCLU7mTjVGxda3HvDFWRqk-1739214385-1.2.1.1-zec1u7JsLmhNu0N8RC.H3UFfgOiBQmqm5.rmi98Ng4t4FdnGQUT51jmwPT6EYEBQ',cUPMDTk: "\/post\/099385011182?__cf_chl_tk=PInUpUfga.yJGed29h0f.zywhEgtLhvSepi63gMGayA-1739214385-1.0.1.1-7Z.ajuZpatdmiNk_oK54IP7.XiwqabDWADbVBnjrRAM",cFPWv: 'g',cITimeS: '1739214385',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/099385011182?__cf_chl_f_tk=PInUpUfga.yJGed29h0f.zywhEgtLhvSepi63gMGayA-1739214385-1.0.1.1-7Z.ajuZpatdmiNk_oK54IP7.XiwqabDWADbVBnjrRAM",md: "f5g2rj8T1S39C7J8heXJc6F.T2KNFkpniaIlx0VQzsQ-1739214385-1.2.1.1-OvHYZDFKn79qXPQR74EsksaJmbckvXBk920ZALZZHCL1htqaA1HAJB40wdnc_be_I6MHJwdN._HGmbE1usY8dFmc.pFehSet7ukZ__aHP5HJFmdQXZUnbxAoRWzDZJgq2i.JOMIgnntr48peG3amxw8Mz0IJmfihJJiWx_R_1jjcXyvHoyhkFJJ_KJdTRXn7iBcP_P78soM7TVObWqW7caLw0Ut9MdFuaGrhEQDcYc4PPrq46cCEv3TSMIcJRYlyDMDYfZjBxQcFFNHWbTBjFoU4iGA1LhdncA0bZQ2otDeXMWaypuWGeLGPGGDpkxF4FH7hR6vfh19tFm4DpxbNHyQUya5l.PMb4AoF20.ep1KiJlZVjauOu6XlIltzmQZRhgI741FGGWScN0Gu4Fcksh3oxYwH9ZrbCROYn2P_seIE5KaajCJc2LwUjLxJWqwBgzRV4mDngsxHxxESXNKXIgNxt.mNSzYctLMOB6vkOcr716NU2U.xpnYqx1WaisAcjt7dcvAb8eo8fc3uOfCN0SSDVU.LRZeuzr_KdFNy0.LYs6tPhro8hEw8O0PEW.rWWvjO8Y_N.KyyouS7ibgQZiObGNLgbrCuRGoxmLQDibgidgzWuPN3p_6SIbUQgp3OVyLCCxbHVeLKTSNce61OZDrbNKwI2yZiSPf1TBNKfpB8WI283wr.VuJ3KS687CnN83RkTXydpfzAJQFrGzxsOHO1.RpCXNTjFncrZRZFt7sgd4td47lhZ4co3lvyFfruAGFvdHnCq.aWI9bGE7ZkDpgZZjN0CwfR.ohbMT5dl0TpWa8387h4QMysaGxrgL8qpkxz3LngbLiWZef.MfX0U6qEik0K_m9qIfXaAmuOgTKlED1aP8ZN.Pw4xy0Wj0yOr9Tw0UwGxb.f.XkcZ2uTSC851qzhRYmnKwXFBfsS2ydiT.AqyQLdhUe_21xmVoCYynZ4zXG0Zy7tyxtT599c3fUtCIXVVXQ.bTkuh3CWcATsVcKtRcJLS6swB4ddLOfiK.QYc81DZQK6Z0V7tdzlodK24QzBvyMckkgylzhfRjolVuo52EJV8e7hv3oXTJlOP3RY5Ijj_8VIuwa.5D47EBVNN__obgQT3ttG8EcrEaVSmk7wC24LnnmdihuU91tJIItTVYjMk6XCRddCmWLoX8tG3sSqaKcZC.7aTNhmRCanLVm44ZknmY4mJAvWqglXgo3d5_dpkND5RUWzMpO05_hHoFBr95A._K4xJqYEeIf.zc4YGU6gVEzrkbRNBJ.eY99kx12SwWGo5L1GE3Fas7oqvKbZaG64g0RXrq9day1inw0t9XmfZJoncguMb_6pbq6DcwSmL8Y8SA_KptCB26bbZP31yhOiGFJWM7XJqo8sSHsxWP2zZBvPaLelxL0IQM7jHm6XowzfTMQVx4qnGI6W4FPP9GTNL1gLOZt1M89v2ZUbec6AW_qTAXVol3VGu7ZwVofhVhkW2aY4zT4G6er1cZGHhp5tBm50k_mwDXE3dWtkD4vKySXkU8R80gWE_rYjuyvxL1eC7CjSvhs4D.yXHzTZDa.62dKs6uPXcEbTlD_9Qt4SJTyHtCSNCVjt1Ap.JOxM0bgifm1y1rqKwF9VvmJFNvD1swgWPgEHpumlCWQ2VzVIuMaBWmfsJWi2Q20ZdiBy9AXqNBAN20CGy2o4WMWsIyN_9KkQi0RdnfsfQf4n5aE07DVZr4lqAqmeNiVLNZEt2x8O9H7fOK3dwyuc1lEzx6CwGvq3QHcOfP19gGdXvEoW0NV2B.4n337sC7h9v_ndWmzJkj6huaO7CwpoFPIxdzXn0vPMpYVqZJwi_RBPuy3ebdM_UgqDdd._dgYEBKbfQ6iebSLarIOxAiC3ICyR2h2OR43ChkD83sJaP1i1ghjUO.MnE4AeHYM9ov6aDEWHDxzum_hop_re8Bc4vRA_wvFXoiP7DPsDGpxADLFTgnvjoCNooPWY7PwxY20oO.fC1mPvrA8fu1diQ2elRkGSYkL7iCTHbyZC6b1AZv.tX2sIRJ0Ivw_LFlVWkYZ4.QEHei88U57.2ayDksqpmxOnMvPc4ym78wx0COqEkbtO173_Bz4B7I7_gYeDlrLfQADYxY8cRc.BCXfuwJWjwL8nf4D8OlkKl2Jd8.qjih2xE7HBkFv.P4DSFlrwcuVadBYG2nV9CY9FOGQ0pgTwEc.z9KAfhs8o5qRx75O9YOR0l7jLhO0H3yr_5ZBVR5g.Cs0dUK9oUIkYbbTZ7Q",mdrd: "0daGqpcDIKI76i0vVTzuryRVkr3P1bEpWkfAuyuxxf8-1739214385-1.2.1.1-ekHESELbWKDCFRvZd8QuS66cr_2.Kxmo0JmYacJnwDGrvf_Gk2ExyslUJVHpyAg1DigQaz9JpTLFjjB02tpbPClpuaCgPM_OjLiAb9EJl_VU8HUzlWajUyl1H.cne8SKUNJUJ5sTCb8kTjxM3Kv_H3ydiAeZoeBBYCMkL6M0WwLhV5AxBp38DrOBCosg9LRHGu0a7GMTfMUQFAh3IPmEpN6GI4o.evpk3WOP_gCA88b6.fW4IwkUhhDms5gYlKMdqZ5ZpM6CGDAVqr67E5NqgJmlzkUsX3dH6ZELiB4SljsOS3XdJkP7Y4zIVLhWPuOf.HvQQKrsfbJ56wEpnOQlf7ELTDk4lJYdONtqbmp8hFB4gP1K71iRadeOYKrkUnee1G1esscfz0XqZ3OdwUE1.dBlJSRFp5jajRj4p9IsWcwORcvhFwh0GmQcmydFBWZWore45UGCHLQZ1QrpyfirkWdEKwlGjsgbUnSaRcSvkshCTZEiKcrv8fd.RYpbzgAJoPc12Xq2tR4Eoe_qvBndnh2PgUTKs5A1PS8PCZzmADT9CbmsE505ODN5XWCS.eCr9z.V2k2x1HjPv2OPZFEfzNdQblYikmgylH0B7enmFASAOoKfOS2yB911JVKHKgakgkIYoDLP0y2L9DZcWwqxw1NuGN2VDQXrclAr51hTg54AVUKd54rkwFRtvlZAYFNFNHm1k.lMaedWISpeu4AgsHL_csoxwK4rISfOva2PdeMoqV5V7WsVz7jenIBpvwB8cTAIosMFDEkjy4h77Ign8jB0e4Ifucy2eJtxfT1LqAbB_DPEv281egYbEjGrSF1kvPkLMfuNyGFRy2N.31f3Qf4WWhOMNVKr1rmPD6JBcW4OENXQgu1.kKBqkWwQMwn3sMfqtdzGK86gLD9QpYCprw6OJW8d7c1Ti2q8pMguFeRxeLYN2GatUfz8EOIXo.iCQvMafeTBP992igEzGnQQdIdooTGjYSVC5z.tnbBFVAgEbBsywHXTWmvLWb3IXDOUiQFgrLYc3CLOCQn.KkcvwXHpj3w2U9mJeFuzS4nmXUf85bK68OVwJJzfAL1ehINRmO5FKwXWxt3RHcvm2X_9MdLJxKksKMUcdFoPduptWJsM5r1tc4zPeFumrNTy8hRTKbS0WfpuNKz8x3d4iVpMVllt1OTCgY13kyEy2.2ymsyJjV3_E4YYv3AVLCzK5qog95NLMYbtDDg7CeSD4Xq7jLzKdL6TaY5HxwigfZnBJNcv9kJV1_ABHDaW8eVmYSQBsw989JsZkXjMicOvFBQkem8i0UGJapeJgVWHN3OD9g1jKNVR4WcY9A5CUS85mdW5DFAMAnTNxgW2yVbvw8CPvpEUodel4nYAq1l0AafvEUrW9utsQSbJRGN0KMCJd67T_ljTROZ5F5Xud0oDbQ4BHfFDRzwidYGVIkYAWoogGr2ya3fnLdvL9uvkdJZurgoJ_I2XGHNIpfb0jLPHFVHuzbemVfBKglkTAuUmPUqFo66o.tICaGDCW6MIc_EwNZALUSLPKSA3nECKeStWk1H5FMPBZE_3X2Zkt1t4sGnGE9.1jSPoq96g13fFFsnyJtiMgCjPAQBTxKJ3bPLU_2DvuAbMWtCDVS9jn33qbKT0Y5hBRMMKMjmPerw.egHHfYbJEA6S8qL3C9CWAJ3A69E9iDm4U_nvGX9sRriy6mpkaLx9OsGQTD.xwobimf6AcwDrrfGIe3A0tCy.BICVTmlwK115bruD_E46xPwPidXRt1FMHh_Eyb4eUOrl4TGUxAZptjMSteAWkKWQSezG1WSXi6CM.mxfAEl6v03sUrht2yWK5QSPZc.M5QuQWIwiW.4xkg7xtUVcYZGDeGizd4SH_w"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fe6056aae9802d';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\/099385011182?__cf_chl_rt_tk=PInUpUfga.yJGed29h0f.zywhEgtLhvSepi63gMGayA-1739214385-1.0.1.1-7Z.ajuZpatdmiNk_oK54IP7.XiwqabDWADbVBnjrRAM" + 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