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-afflzicnx.mit-edu.top/post/2071894653

  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="360"></head><body><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-afflzicnx.mit-edu.top",cType: 'managed',cRay: '94b8997eba3a083a',cH: 'fz8t64Sx788H_XCFIAiJSQa8OBrF5_vLiA6ORYeshJw-1749220141-1.2.1.1-O2syoucol6QB79q6CEjtYEl7rv9rO.gALrGObAQ1Hb3c29L8gVoC7OyuiGH4rg9l',cUPMDTk: "\/post\/2071894653?__cf_chl_tk=1MSHa1si78l7to.XoVHJYQ8TR4O922Dl9c2XprA3WWY-1749220141-1.0.1.1-xMvMYpt_8og4JvpJNG_gpR.QfbdrBGazyabOrE1atPU",cFPWv: 'g',cITimeS: '1749220141',cTplC: 0,cTplV: 5,cTplB: 'cf',fa: "\/post\/2071894653?__cf_chl_f_tk=1MSHa1si78l7to.XoVHJYQ8TR4O922Dl9c2XprA3WWY-1749220141-1.0.1.1-xMvMYpt_8og4JvpJNG_gpR.QfbdrBGazyabOrE1atPU",md: "LEY4U8h4XSKz8iKCVxn3NsKhh7AVJVklHShrNje14LA-1749220141-1.2.1.1-d.yEJcE7oC2uzS3ARVNKwAZBtZdfySRQjQjwZwttMcJCeWoyH7BIJzZ6jtG7FDTr82zwdV7H58CnMcR2oX_dOIb2EuK4c1i5uBOkNHSgHny.xGdhzdTy7f_QOUQZ2WOVDupgeGwZLZ3Di1kO9I4rMrbdR9xyRaaBYIgB4bkn3cDCzf7WNdBsLBWVGWdSckk71qZ8ZxyLyNTyexBZjvNcsBI3KDK5_diQPl19D6tSFBF.WOrXKbhqz_kzbG68tEdJnN41_SyaQm.ydNIYVcfbSMVT4IiJHXpDkVgkyII6Wno8_uojExEKcg0PWC1357WqJu03wJHfoZnTDvrE5ZFf0qRg9ceToqyw0VIxZRWZpkpoLUjXFMC66DF5ov2VTziaOwseuwvVvwOIYbMlGsi5mEhl6HWyGVbaqkNEEzwx2JASZhC11hYEZx0f7SMK8CIBbRyrZgoqQNzii89.yzkvAqJ2ZkNwJwo9zQ5Qp1vVMFsEgRKXLFz3MZ_segUYPj6WB4_MKTd3ZxhIspOkJIiujwhh1gY8QbnUg_a92D4.eD6eg90ShzAiFkJwdwlhN26S.AUggGFwGPur1ys0ZEafcYxdjgLm5kLgVKvKzGEYRafc8PYE0i1_Jb0YMdymbIQqdc7E7Vonv7dj03L6ZL8xlfVxK7OgOfpz9qSEgItYTqFfqYGBHDwNs_Z0Uv0_m_69.Z5XGla2oo2oP7yU0xYVGxuNRMry9ep.jb1EQHmX.7DpuzvzPjcUFeO9o_oym3v9TrPAVZUugFR4bdN6Xy1oJYIDqCjAXmnKpgQ6j.0r8v7pLSNyDZGce3p9m62qE8QZ",mdrd: "QhlcH7PdwRJ7NIBPTMKJ.ByqD0Efz0Ye8fAgHXUsBxQ-1749220141-1.2.1.1-O7bDGlIbw9KR8uS8R7ARAbrPOKftKrmkCtxGGf4h8R4.1ePey2kg4l1pfdl9I5yf5DY1euWPsjJIEfDidl7_eYIDv8wnrRVpsQNCbmTzd7nv71gjvGmeBcGiqDQO3ws.5TUK_FHJgQf0_wKtYf7.AZZROETsQItFv5y7FdjqTNLB7n_WfiW2TEPonYSVL0sJ87NWlanp504Pdrzr2zlD_V5iUIf7ZjunW._mm4Tis6dbaWdlcIElYFqUqJldkSBo4l3tDmzghNTTyKHHpUNnuaeibznIJOymRNJlzjyjtE5q8B1LA8_gwKrfG.DCsJzezhJomIRB7Iy7WQd40gqWmDwX_CuvliDKdKmYoiRokBk2wJ8IrRBfiMo_CXedQkW_0dUcwkvORNOfQPcfDnnS7LJcJFy946PDo7P_RJ5AaJNlLTrLAndGICKb0VkxePCemaVDdVocRXfJNIAcU6H9WtNJ4KwA7dlDeyHMlq8CX06sRJ4tIMuR6jf_c88V4loKsvD2vxQl8FoYNUDd7wVRrNcRkvZBmVFX4fiC5Mb6qDU.2W.5fR97EeGDRSFEdAA9wIfhBwWGITyPSlxL.GfdCFG0o3d4XkFlzpCWHDTbOtbl4wplcZ4evR5mbpcCFtPpLVdj4Q.BIdGL_Aup5B9on0gUppQ3u21ObK_65nzaMhq2rl2EEVBwQXoiyyynOrZpeVnqZlF4ghuHvLvWNWrTI.5bsNH765T8fa9cjOvSfU0bGQ4y37Zot_duvmtG7qDCoEhDh3OW9UCzWrBW5q7b1jYD1WJAuai9NkAnaVU7xdd2G0fx46qlusr_Yxy7VK2gwtsHx_v1bZK52FlDittrx3jECL0Fza_EAhcA9FXmJTJlIEqzvnMSC2z6tM8k4K5FBUm3uJTeQLI5WFy4e4CW8jSIabZFYG7R6CVAq8mGgMPo0HSXnUaa7uKtDUvspEun8tLfIXtK4GdbkJDgUp_dZjkSgFxUhCFmDJuhdmnRpr57Jrtt7A2GIo65IvLwsLQh2Pm10msx0q.AUKMwb1yRelHcFXtgkp7GxxVz0J1zUrhvUqS068SxyzEUVzSbNF73eUbXOoT.t__jmschxT5EVs2ncsQ_4f3J2IymlLekpAq1c.jYWei9aJQ4JRWzwV7FhsZszLQCf1xoQGftT8MvFZy_GUZEDgAudWiRxdmpQhyvxYBoEJf9qNNAHZRkhJw2Xmqi2KBuOSy_IX1Nb8OreJYZ1n1dnLNYIKh2z_zvJMvDDLikb86bPuo9jXZ676SOne_lNZGLyotFqTpnm2HsbPs4xqFHEH9amCSTYVDoddIjGp5Qw2n1HlUDoKA0YRhR4oJFnRa3PZK31oJ0uzRf8JTlnOLH7O3QPYuxVhHUx_Xm4AVCB.yfsfeU1OpBRlZrxV3djR6dDNVZB4EyTvBs_ZR2rI1u4RXRvGIhjG9qYlt8JPF.5G3rVreKxA_Q9wd_gsJJWfgbIGD.zzzOxt0BGgyN32OQSNL.Ah38e0ONo5APiPPeFF5EzyBpvg3Eymr1SGi6S8k.tgcmERbaZHinMrQhSejhDzKtaIZ4Xpbj3TuiKeLazWVpP7C0c9qIPemKBLKHV657K144ZiGzQmjgdZmuVxVGZybhpT2tYcd2hsCeXjqMaP2blp6HXR0lKwGsAWoI7eL.Wyj85uZcIq5EH_J4UqMneVtfgjNEA7CeZ9W7VKrYcNV_AKj0UmwQ_6xMmWq4qH6_jMw763QVmu5HyKuwIzKaz6eiOaKvsodt4QRWLOGwhOvC2eaRuGQjeamPHlZZiOJGzB5m_D5YAZ_SKCGr7xETO1e0ToTY3Sg_Da0sj_llxm5gGBgb_pGukskNFJDnCvyGjHxljDiSlZTpAv99Ki.og48D25e0U_knD24"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=94b8997eba3a083a';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\/2071894653?__cf_chl_rt_tk=1MSHa1si78l7to.XoVHJYQ8TR4O922Dl9c2XprA3WWY-1749220141-1.0.1.1-xMvMYpt_8og4JvpJNG_gpR.QfbdrBGazyabOrE1atPU" + 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