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://blog-affsxqifa.mit-edu.top/post/4169820537

  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: "blog-affsxqifa.mit-edu.top",cType: 'managed',cRay: '90f40dc4887dc98b',cH: 'EMYAAJabZ1ngizSdyR0p.bemT_k6uH6WV_gsNGWcDF8-1739106146-1.2.1.1-GpABzxqDEKp3dWA_miZcezq63rbKxEEQoWOPF._mF1duDn4ZdYYIv3tco2gcUJZv',cUPMDTk: "\/post\/4169820537?__cf_chl_tk=.MFKxFyzMonqbCqPAAdJmsWOC33GhAy5ABJeXZYb1BE-1739106146-1.0.1.1-0hZ8_3V7fk4As9JGgFcsD4he3XHHfHLzH.psJ.8oCT0",cFPWv: 'g',cITimeS: '1739106146',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/4169820537?__cf_chl_f_tk=.MFKxFyzMonqbCqPAAdJmsWOC33GhAy5ABJeXZYb1BE-1739106146-1.0.1.1-0hZ8_3V7fk4As9JGgFcsD4he3XHHfHLzH.psJ.8oCT0",md: "A5FWjRvJmqP4WbWyaAI5M.mdBRccPnvdynzHplWxJxs-1739106146-1.2.1.1-57iFtPtDDYhpwLoVp9CYtwJaLpWj_uVaaDgLQ1U1_ePGXfySzdB6MknFkDXtSJFB8Y5l0O5QwJ6kcdW.3Hd6gRzj59P9XllsT.MWvE59.GSr54GsyPGOagvJLltzbtIqkmF6Q7xU_mFfdQuSWWwM32j5w2OrEhKtMNrA3yl9UpHVFvANTETQWwRp3_.iZtrFnJPYVSpqXf2mpnGzpHAAEQ6QO.XMA3c.IYHaTAFnBCqbHwxSteJypiyp3sSlGXkAxC5EHHsBrhPOJFjoKHtHIRPnkVFnggKwu.qTYoc6Hasgs872mt5PCEjcxH6JVhTwgr3smnVMd1WyAtfIDuG4c8g9fvoFOR.ygdoKD8BjC1vngVx0VeLKufun0nQc8LSQavdKP9E.drQgdhtiiHCRA9xAUVJyTsBu53x7Kzrz9q8laRbczyWCum0Oiz3tBOC9Elx78iSvDtaseXbbJKPk6D1ua7MABkZR.KG0YFJqlq3Kj8RIalBZyUMfcU_ylELQlOBVijn0eGvUYsOZaqNzlmBnHq0yJgb4bBdOk4IP3B_NeLCAFjoU85NQp.eS_.zQ_Qn62rcuDB8b6P59ASBgEb4oRg0y0gvrTM3GH_1g0wmP.hG15rGt.kxHm1nsxfKsEEQxpNtGc.dQnJ03iaA8ATrb2EdSyNqSqUF2u9HLxiJcxeCWYM.J9IgDn69nootQwgJ0y1xZsfpNLgI1IF.UZ0yav.jSFqWIKsrEGumKU_EhKt9JEf1oBWIqsGAZl_sYFWszf8dLRQXHgk3MgtX73w0DEwIXlzijUuWjHXyJc061ot7Y66YCJCfGy69rooiOCol3GZjrW4S9nTYZr5C1Uajw.6eMXjm6ooAcJbiMdzHhXROj6MYWPyGYheHVoPTtA7XREmxr2aLpih8tf3sIFctPlQR8gsPRXCM0wIf48zDDtotc3uKhNsKTYWmBoxwszDgJdopGQIcwM3H9veOU.lcIdUks09o6D_HlcO036Rj4fNmnu5HHzzwIxk..TEduP6oRPtXRENGx00Adbpg1JHcxNL_U4nHSOjkipBIsjJnMK1MTw5iijBZPYpBV44qvx3RC7sT.rpICuP.QiGpZUojPpDP56yAJsIkKQHQup_IQhYpEI4f2fQnyZydaRV2Jgz.lyPrutMYZqHc8e5tBpX.SrJszgJ1TrQP9o4nSRp8khYVno_0ZMdxyk9Q8ykvIJLKQDN7MGTFTNwn5Ie0g4FPNweBFuSdYRA.k9o5Lrv17bHq.eYMQX_aHPjQ0XIAccJILbB8z0JKMfpNWkAhmrTZRq5em5KhSG5kNxcQ.S6.PUTrieOkR7D43t2aq.4FaH08kqNTgPDsVZl0AMTvLf7g0Pamp_uWfT3G00Vbl6Zu.ZnJq..unsd6YGWiATMSWeaOiXlTEFKFpOqxJEUSvEBGNDV6eGSfcoxKmFuceZoN8skZ2i6XXMDVSJO6DPOSZupHGqF.VXe8Bk3xCsEsiH_GhuxC39ZBAuXqSW0WUFjGOlZNKckD.jOZ_Ttp1hDGENSNnoznaFvWYudgtnQrBWclGtnSCshc.l12CAznHpQNxCks.LNqXr7_MC9CrQmfSOU_8VIrfYwbLHOT_4KT6DKwG2mE0NxmIWwM2TgtoHGA19V4ZQoMTfbS6xiVk71v1Z_YaUp9imtZX0ika2549JnFkkrMrsnComN2RHkRStUz4qnJkBH721lXZx4wqV81JjsIlKRtps.JHKYB1WqZd_zZAPbKL0.CqhLBGf_Gy1X83VTomBrmWvxh_lc6Df.QzmE9npJZ68RiIz1gcVXIkPp5EKCFd6v8UyyV.O9GTy_wzaRH8XCFYNGPTx3._5RodYOkQ34RdNdZYFltO24pJiqT46tGKcRuzKVoB4HA7tiAqUHfMRm4imH5PNHoketlk1vZdOUtACDlVMG6I_opXUtc9QXknektC863fkywti1pmbKt.Nizgs4wS7NUh.EY1WDzYB5IRf3b7JZCtYwuA.ueiVU.AMk5gtpb56bY4DLGxe72VuSHWK150cQ0OBOzcPjKKXxwoqi4dLZcPbRF2T756mmAvh_JjkPkmKEW_Q4PVNkyC26qpQUm0xknIRucxGpPUYq1XhJ3A2aPJ_R7ajrMdQI9QJWFJHLaXgtZZZGDEYz3x9ne0TNb2QvNA7GDzCFtJAm6RiAUz4sPPT.Xqu4xy6Snd7XtOXD7qhqXV7nOWS.S8MVQkHwMuWCVXHAS_",mdrd: "UygJbv4n73QF2ekP.6V6YiEUnS0BPF6Ydi8FvbLqVbY-1739106146-1.2.1.1-zhFJ0qalU9580uBuo1PLtbK.ea.6tbVMtr4xp4OCHauHmpJ3ocROBhc.apBpmnOAhHiA9TCSf2Xh3c0A0mPkwcbmOHbUY78q0DwabAH79AyST7j.HeUQDDgk6tDH6yFrkHV5xg3ubVTY95xOtSkOXQ0sM4nVZ6hKSYnZiBdJEiQphFN_j7PyrEoAnAyUpfo.J677FpvOekDYRaRicAfN1Vl3vAzRiTdRpaWSDxnLbfn2JxH__Fny5uFfz1erutTvp9cnnOGQ.i2VpTDkMf7TQPrPsFMLjtmhjqj3q13Pik2XHMfrWynCwvmhpkAiC9ptg_CDv1quYIVuba1g.EJiCjRzqh0e6QxoiF_815USYPTvz0UOwtWq89AbZdVtdNKv4wHpXWA6LHTjAT16hPR3oGwV2OUJT8bjMUio_dpBu75I5YY_511jebdxjIV4PC56IN5671UuakuqyYizbiNoDBPKDu3oPVSyH4p7axWCLH0UM6LLnwzxS1Jnq2oNiSqAbg1g1ENQII0Im1PvbLWD0kxM0bMJlU5Yv26hk6TdtvFUDOEKb4YJ4RThaOyP00W_ru3D7IJvTy4bnaRaTdH1zvaQ3QcoSy0C8wtR7wGGNZIEn9vjdCWi6jrlXd1GPfgL7MLDYaE3o5x1fyYrQGdeV1BH_lcjAc5nYmExnmEnF5xiDirN092LQ9LM_fPJ625lEn5GisjCDGulphw1r_rQ.V.unZjBUHKyLqb1ypwW6Wx8TCPkDxL7hEAeKvAjp.Vame7daZP7YWdK0Ic20Y3S8obaduZL2mWEBL6Y3d3tdJCONTbkgFQc7wOhpxwXiiTiZqgO41.Bfy3k7goDadYdn4rDZhOSXb5n2mhDXqbqog6VO1ZcfB7VOhE5LhYsrruSrOrE7RnwchnCcXZDaqP9NOqoFF7DUqBjVTTo9c9Lk8Dq_RPeeAByczX.5P99AOxsbb3t410YxUK_UvQvNAgy5cR21uiKO5Gy9ZIZK.glUm97j0RiX1jYBLhk1s44K63AGKV8x.sfxag2B.Tz7zKESH90rIdxEGDKYCyM7zcEeOTuYYrdJOpGNCxI0u7zymxmEpXW5dHivkATzmhwF9XzbKmYDCRgtUmo7F9b6C91SGgEpRABU6zgv.CgorT6o3daHpo5i9kpWrki2eGWdFKJXWT674mkFsNA.QfUeFSD1N5BflUlyc9T7h83579WhEZXL5amImQEO6UWAwLzmSwTf_kvYM8J7WitDHt5mpMy61ydYsPstatcr2.dCKgySL0zdeP8sOWAm0Y5UyUzkX2QjFJXWZMe4iNAs8umwK0XJ4Tc3PlSfj6DqKzg9cTTQ7CPiNEW1uuto0TiFWx6DQ.yzUE2dH9Ajc5jgLqPgG2vx0HtV0ntdkiWYBiJwF0xbwUXVPzMHJsDsTfiXc5zWSouXVkhWAsWqmovjnEvmKfTBGwF9c6UO4yFRys5x22ZSIDX3kdI5vdsvA.kScLv1DRVvRxAg_hM_E7yx1I6hKDbPpTgA63lU_MbyLrw5UVNyKF4mXxkmAqt_I03B9c2Vw.VWMsU0yts8mzfc4n09DoZIN9MwAw9k7rrRx74BYn13RzKOpaQDz_Ajv._K4Bs2vzAPmSYZwoBAZbxAacTIQGhFvF4TIWNA6LXdgeihp6QMZdONpU4jZeQjzeDK.BVtZoBnNKzBzbpWoF9NF2iVStwHNV3W2dK9gIhle1jS6EoBVyyRU9LVS7Hu2u6_RhCKY0PhOCJ3_ifEG6o5NpVmT4jUyFBdhpWYHKu22crvG_mu1a65kb7KWf1zcqvHC06TFBf.oPQLVwQc1IzvwNcTizVb90"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f40dc4887dc98b';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\/4169820537?__cf_chl_rt_tk=.MFKxFyzMonqbCqPAAdJmsWOC33GhAy5ABJeXZYb1BE-1739106146-1.0.1.1-0hZ8_3V7fk4As9JGgFcsD4he3XHHfHLzH.psJ.8oCT0" + 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