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-afffyr33w.mit-edu.top/post/7142063598

  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-afffyr33w.mit-edu.top",cType: 'managed',cRay: '90fae9be2dba82c8',cH: 'xNwUqYRGAzXFjEdLtcbdETsnCY0QRdfQx_sb.lA8Yo4-1739178070-1.2.1.1-uB4K7xIBPSir6k4.bE3MT_pEwxL5.f9nV1Ax6SQbmpr.ZCps2dPxaQrQjywzHfdh',cUPMDTk: "\/post\/7142063598?__cf_chl_tk=UzgyfXJy.embPGgq.WY.5UsBlgnjfSdIBwmEkD0w9Vc-1739178070-1.0.1.1-xE8DhO.CbBhjkXHWi2qM6MqpcX6zzkQOGuXZimMesto",cFPWv: 'g',cITimeS: '1739178070',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/7142063598?__cf_chl_f_tk=UzgyfXJy.embPGgq.WY.5UsBlgnjfSdIBwmEkD0w9Vc-1739178070-1.0.1.1-xE8DhO.CbBhjkXHWi2qM6MqpcX6zzkQOGuXZimMesto",md: "3Nliy9wG1jPHn9sX9WjZAXQ.oRBk3bPiP1Qmibnpwlg-1739178070-1.2.1.1-6uK1pCR3oJz7MA_EWPD8TzZh7yvgCgqgk2QH_HPGo2Bj_tmCIjpJhuQmnmM5plz0v32SFm_PPEHwKuo6vVfoTDf1wtrqhvvYD0xrucH9NSIdm6fYwri8KAQqS29pmlQ5f3rbQyu.aMMtmOOMv7wEtqcl5QG3dk1dB94DQaVDO0QjztVNuHpv0YKxkByrxMEQ8QP60Ay0jRkykTVoimnzEAgbB.N625rvqqN2AClGNu.G2oc._SGgUL8ZArGGksk0uwdQpoKjgrI1P5UDzt9jpQ7zUpD4KRyAYuOYAosUycyEFBBVPllPeKhuz8LtPgIFSwnqYjLZiZBN3iq56uhuXlgrZwJPJZz9.YKoOquf_NdPh7JARbM6vAp08E7cdOZmxc1f1cSPA2JkxmfxAwH7mQJ7OMdvR_AvpX0s1VOw3hA2faSrx9QlLNFwJc5gfNSk_Enbk4ssrgS_ah.tDNfL6lg48dfs6.5QLHuDt4p8u5spd0c8FQPM5DkLzgCCbHXJNXklys6fjsEbYErbG5lGSGhF8.wpdDs5fYrqCbCmGNN9wWAGWxPjNNoN67feT_oTBXJwk_WKGkSCq4_nWTIDYGEu9ahhPW6BIQH.Ne_8KPY5vXjtWZFd8z5QkvdWTpO9ZiZVcuRwGrODD150ZnPlRxE1o14svxv3BN5o_x2n1nI.lhGg6skTIc6H6Zh4AWRjJRnXm4nKLsUWsFjtbBV4I.lxbs6B6544JWhpXPeGi7kMxxGzRjGaN1Vx4uYNvXwZhwd00lcZJlhyB663f8.YGWggxrT3bZWxZMoINcHlotiNnIrOmKnsOqQl8smc0RZo_kwqlaLobTSEPsaoZhDuZ1lcxYv4Ypququ8TxIAczqKHPWDXaCGVKURRDadDBfDSptBzfmL7pj61djxNNRl.7jJUhbDViAtfrmZiMwBuBzBUznUiSpmNHoVZlCbCfUrfWCleIGCVL_oycvPRcqXQw9nzxRgAGbL_jkTBqxAovdCo.7nDR5qjNzn988Hqwbk5KXwHeMfBVgHb.0MsnAysRfPI3hzBj7Cv7Pzckttgb3mYCk1vtPDAGswQ3uuZwmsbalMvFawVxFOUxj1HAWvTQLAULa_KJBBW2CmrNHsCka0K0GnFp4WMkeGk58canwWsRLUnFOkRqM0qBTv5fgTir.zN3WGbIbB.Dohq.7539miFSRjLstgcE3MEpO4yH6_9r1lg46nNV7ItKYTnBqcSsPHRXRIM36F8Vw3T26fYdRm8e6F0PYhvCsBb10pyZhu5xa9M7uqRtNuvDLIJHfYIeh3R5.uFB2goMdu0KchpXciHbnqgOqDpBPyAF9aQQI3a6Vuf8dIOePgvQdG09chFxstF1R3ABhWhWMAkP9Q_ra0ib5XkQKb23cdVPnFIkfgW7gBDpn16FdkvkZKlGaB.wBVHda9A.HX7SOOpTZLSlEfpy0E2f0rnfbJmb5mP1CDhv3u.sBHHmmq6PAJgwSZtiAl3J39V4RijzEP8VBuMYIgEaxEbhb8TyTxFMY_BdE56Q09huWalYfm.V5wpUgUUoLoVZ2O0seTnTAvd.i6hpqSi727kuftD1gkoBNP1.UBQ6djvlKAadX03oM9obk00KC2kkS_V_l6mkgWNOCJdeuFBJtprv4bSGY7im5KxoyQ6aYiXCIgPm9IsTW6DQE2mZxfJYpsZCF0tmLmppyCBWPe6VoTb5LcRwFhqKjb7FPC91BLjjKgD1fJmMU_44D0g2cv5t8o.rPsl.q3p9KIR_a5vqVXY9C96qa.GTCNjhz1Zym3pw8n2bjRGik6_is_to_dgZySI7eo3djvQe300zCq_3Z6kTvfO4Q43axTnAHr_hGd2tuYWiDQIzhljnmRAHmoD6YQ5XWc7qhXjIt0pV4A3RMvaNK9Qx7iJAsW0EL1sDYKlAaCymADqfcJEDnnmAZOiW6ZIlYjF2zuzPNlfnJ2SV1fDc3TvqWJypCFDI7OpttLRSPlDf7_jbG6ZSHKaxRybeXAOKiqA245H.SbijyTN48HRBzAtFqle6c6ZI_6H1fDVy4haOHJ8tbpZGacpyQJa4R4cp9SwpPe7zN_N.nrhhDkm5Lgp8FQzPV9GzYpQdKBd_CxspFoGnAhcblgqThy.yLgJ1rMU02u2kgfPHu81Sgszoha9CRTiZmEtnt0bXaHiyPqhJpl89JZRGZhM28Wou64XJZQzf.LtSdodVuGoAYSv1a18JZOjAUsCPOjX",mdrd: "dTt4cWG9ko9tofOpyFBbCkXL7SbxUjfoMD9J_Fcozr0-1739178070-1.2.1.1-LI._lv23FMft7zTryzjHUeb8w.FzRHCNRs9o.PXNxFVYzDhbnPFPb6DATsIeqdPdjzr.jkvapQXUsIEdMHfmJT7zgOA6VoLq2La.7DeJkzx1cDLf7okEcwOE3RAHp0E3VuNeSsGctS3gJT3lwYH9dHd9muLZGBGUUHKMEhAgCokDEw9AmHs1FWcl0QGK_pqCuELXtZmatKBBIc89CrjBsNf5ER70Q7MSQGu33SUyTTWYs7NMSq5tTRELlusv8NUlKa5jlyMKMSSGMhccXREI2kFaV9_8HjTCyRvhnMkcH60uOo7H53.YsisLPFuq8ympiaEfvTC_sn2H9IV1cRlm4QBEWEqdcg3YMEd61y77xz0B.HGJhmasXeHOKI9WbZdQnCKuRcjncMTQIps5r70lUJ4foPsWlV2QlYIw0qYCZQ7qtwN9_WGQoFUB3iHRqTQgcBdVGPW6_KqonDNjzfNmrDeFwn1KSfXuP.UExh7M2TiHf_v_f9l57YjurtfQT4.O1fqGNZ77BbHZrzKtIcy0NjkLOsZwHFmWd1vzora1ElwRiyDUhsTofdVi6L.YHjrvysMDZx_b7VWXB.K5_hyC3enjf8dqopVJ.IQiTQjXwKAuUSNzaBi8gY7Ztt5tsrrzWx703aHxXRuoWK1Z1xfDdi0fJ51immHYjtLzBqWy5dg_YfXVLzsZwf6XIhuerR7bMmTBBLJYTOrxeUcvZ_aXgYm4yiuWG36HPa6NZuKYZB0TDg0bhiz2dr.vlR65X9VT_DZ5KvKYIJi8nrWtusYAnP8UdXVNxNVSaQtVAaJbDAvrqkWHKBVB54YMhp6jmp_MCZry52d9rDkmuVmj16IKH2VFrEBskY1TxAjRxHaoiAPuQ7XQVY5mrAX7RVuuJeuaDv0Q1Ymck3CRQY7qr8u6MSlqJZs2hqS8E79PEcUYRZw911X9oPSqTcrhoEv3sOQCrGQZgY5rIw4JmQKIqVXV71LQbO5qZNuwOc4BbC16_n5GfcGjWS.CfEE9CbOI7nxVkQSyYrI64jcGGgjiCIYqPNjx8.0t8h_y1OmOsyFi4ulldMRmfYvdRRCPvsNt_Z__Y3rvAfEIFdmTh.HfXcrqYfblANnQtvLwjcUGqc9i9_ml.qRWjoirJ9w9lEFmBsJm8Y8wDNSpC_YyMXv1Ngq4bTp9VFRMIBj7PkIOg5cVDXlkO7dLzf1jyvyAkaT5RZYBQmWcMos9xnqZBnnsl8HovsSjEBQmXR3M4DBeinkubBeLF6qZT_lVsXS9tRO6_w0i4Bavn67Ywr9UV.M__7ZJM3Y._XWX4kgYuMkSf9rq9VpoCoGvJUavt9RIm7pwGPzTq0rLhPWzJxXabNRkZqjcqeHJQB_3n7_2PDFhLl2LqD4ViUl_rG58LPK8CzSyWIgrciLl32gyjXXFxURx0jV_PCs10RcWS3O74lf_0mxUY_sGbDAR9zlN4UGk1bNSD63kRN2E2L0oTlqnv5QkTPUSM6z.8ZTkIRqCxuJdc.0dHgaPMsR_RrQ7Xqk2p053aJx.ge7CAJHCO7gw2NMczGasAPLYVPI_8LiswcIbV_ovFVqWVb3oZE0v81VYqMjHGwAnDp.rTx81t7QP8rVmeU3rwxmUyNIuXmoFotvlXNzZjg2VRWbn0FCkKbv0hkCTLRKUW6AJ0xrAAjKgBxoulSbHCL68vD8dJbtG.8DWXIpQ7aRhTvVfMahmYM4r7nddhUvCjmHD80nkLrXnm4bl2QZNmBfYLb7_DxzYz5lKCbocQqn03BjuIE6bG47Zocdpt1UMLiAlmTxGvR.CVB7L5aFf6yLWhd6gxUVvmhIuaMFIxVY"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fae9be2dba82c8';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\/7142063598?__cf_chl_rt_tk=UzgyfXJy.embPGgq.WY.5UsBlgnjfSdIBwmEkD0w9Vc-1739178070-1.0.1.1-xE8DhO.CbBhjkXHWi2qM6MqpcX6zzkQOGuXZimMesto" + 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