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-affbeyd3b.mit-edu.top/post/3980765124

  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-affbeyd3b.mit-edu.top",cType: 'managed',cRay: '90f3b00909a73892',cH: 'Fwg8Ewb8c0Id2a6wegWd_6MnHHMT9b2sAuhJWNKLKWA-1739102306-1.2.1.1-9DWLrSbdYLwAJWGEAxvYmchWEAMt8DqfflGra_ZFQIAA66kVV4UaUQNhrAfauRZH',cUPMDTk: "\/post\/3980765124?__cf_chl_tk=RCZ7XjJ4Z1d.woSE0PiI3fMs2AJE8CDxVYeoQyD5LRk-1739102306-1.0.1.1-pwk5zp1jZfdewqUmCaP0ypfNMFkhw.aE7OUZ0wHS7oI",cFPWv: 'g',cITimeS: '1739102306',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/3980765124?__cf_chl_f_tk=RCZ7XjJ4Z1d.woSE0PiI3fMs2AJE8CDxVYeoQyD5LRk-1739102306-1.0.1.1-pwk5zp1jZfdewqUmCaP0ypfNMFkhw.aE7OUZ0wHS7oI",md: "Bv8aXwo5ZqJdo2qt9nN.H9reCjxqo8WDcjKk5.OUMT0-1739102306-1.2.1.1-YwrBozKIOtfxzyqEESAVpbvL_fD_7gxsLobqFhIOew4lo4S3n_.nB_N8VQAyZ6uKi1K27MfWKUlddwIY_EWDWs20NsqZuJrPmMG2GoHWkaQyZbxqZ3aOfQ.G5m6LVOPC4yUMPWCxbchqFkPdrPl9EtXhC7JSC_SiPUP_dIJLfVJH3jcNVk48cNHkW0rKw8tKayA5k_L10TbAKHBvp7aa3RxMcWVAuk2kfoZ29JLj65JWC7gYjG1715s5AGoCKtbNWhAo67cDQ4zbjQJaZENne1FpYjh9h44TK1VrqkpnCn90t_gE_3_zWUrHdr5IkB38x2wL..qwbL28VDbL43t6cxjeFXk6t.JHtuAvmNvB9XR0P_lLb6g7ho7q2ADaDjvhvvtelf28h_nmkwAwVekXClf.TZOwOhr8Xoim2kPgPfvCBqeVIB6Y5SVzyH80K_g6UcSkSe9M2pBt2vHFracFGj0GsKb7zxJbX5AqaWgk0Yf7jdzmbrJgKcH_RledgFaQSLfVDi.yizmnTAidYnjPoqaJVjTSenaba_RnXOmnuUEptiTZgFJttFOtzgSqmQzSrVqfeEXI4PaFX8zyVE011qRJqk_qsBUYk1y9mRwJopfjVHxuJJTeMm5muc72OEQ2h9SKlZ46oRb4xbhjH5AfmBvKacsLcC.aJW59Q9BpVzoC0n1PsfqtlOiNyVK.SkdyL_yMCy6aIv0xt8JdLaVxpIeLFj7UrFTI4.b12nAnAacRGhImcUe47Fkmvh8KeperB5qlC6cKvOUzVF4bKsaQ.9_DF0w304P3e53jIyjweSxwDTNCBDpTuc8Ua1MGhmZlp0wlJxytJUx37kZAAdFB89.lqCiMw6FoujvcMJP3vsvzmvMuBoRy6uG5DKuLvL8hV1mBcUsb_Iw85xdBKq8bfNOJh.nVuHX5Onw2EjB1rjPcC.PUL.wRn4gvJb24EufJ9xYcshA2yeGoMEUe1K0X_rluH_Ms.Kb.2wi_IJrXG1Us0tC3PKK_MG0VwDaV1MEZiZJ5YB8xlGzvAWfY1.VpcIkA8mDtPzC4lzX6Y6O2mgjDkTsgtgjkOrTexQ97HRVa1B0w7jQDmytShbU.KmrbuCI21E0YDSkIOiruyqxE6ykmKBWpVmZ316OrfPA1mDS1poVl6Q5NZXQsnL79lG143lmc1WED_B45kiKhPk3oN6y1RD467tWnxygOcZ1Q1TsOUyuhNjeLExrUGnRQ0dyH28MPPddUhs5rJTcB0s.oXRcnXJxO.XLYRA_oEoo545w.WxveVuC0cVRMmWc1zSoGAJyCBGL9ZAcRs577abt90FKWQ7dMO2FsjCLamDgtQRZG2Xg2zYlihJh1lNyLE.rrZJ3mu5932.nBXR20.gOVgJ3Jgz0GlQAV_rpXypoCylcHt5SrKILfO1BbAEJGc1pdGvm.5AtF9fO6XSNqfj3eyd7DkluUZITx.l.mjjczHAl0MVUX2Deq0JQkGyLDOhcbiVnVtHWQU0D7b.JxXz19.6yLpa7rZiMytOrQNVGTQzynXt7hi6eq8jYiokfCAiuGGGvNLTk4yEDkEAlnAehj9HDUBtAbk1HwBk0BtMJS6NdzjqkBzIw5e7zWYbfobtMudymKUXvGbLuF9Z2Gb_thZZ8WEXvSHiQD6X4d0VkuYzT.lT4wzzuR.HNXN_BDf0DVx9OuozPyDarl76njLrD7MKwwDI0txGLHUQne4pj_BYJCTO72yiA1fk16UypkQHW.uHgOgwxcdL9G1LdUaoxJYEZ_uV_Ff8pzA7H3bXlEPb8cv2RVzfewQxYjCSIGvBH15hEw5xVUWeTj85sVdQrzy6Z_U6lTCPSYq55f0GkBvJcx96UVoDl.n_RkvRbOAllbNCbKpkFfJqGVCISaswL2UTmhOtvkplWc8_EoaFsnV0StTez8vmjYtx4hTgbOU2NoeCTEipH2pOS_ZCAXB0Y96DXOB5zoPaTQFtE0ZMew9opIVjyIaPY2dJPk7CuMjwiONS9cpyt0wpQUWK1NUbFdEubMZCmm.tid4eSIvhXCMQN6laiqlG..22KbAtWG.6XTeRbhNbncKh2KLarl.TE7PX63v6jNmFTuLO222fCP2jmVieDtOQbJXDGfJ9hGjWXnrmtJWSZa5lP1fc4bJwIpdkAX.FT7mTNJnejHJX1YE9.t16qJwIYD_PPE8q4Hmg_5p71xuNEGK_FeOA8RoFPUOAz08WeCYa3WwcQ.juK7RAUE",mdrd: "SMFsaH_RYXQvsNugdtcysxLX14QMAILFeUu2p9yC_3k-1739102306-1.2.1.1-xOyknqnsYNWIUrzrEQ6rnmGEkxZ3G_i2vGoux3Q8W8NQZRiy7XRqa3CX2O1XrBD1OOI0ngkfkqDbYR9gmcBPsnxGmjZxjVrK8S3ZDNpW8x8wJfPfE4siGGloXktPLYSXkwNBBbM3ek141H.a8kgZYRgpn3yf.JLq4.GA77dFVCa2R_8MBEpseTtoy7xXKtVcsenpw_mWro8xZ6ga1Gw0tL2QRj93A7fgfb4Er21EQUexopO6XOLIDK0dYCc1HqIWNvYHR7ZgAoU3a3IMJ5QommkbQdDUuqFXLIXjbbRiLAD5Yd.0pWeeH9UIbg8QGBoPpaYM3jddkE0eHTQEqOG6K.EwMWmhDzH_QVSNQroQWDX4Y66171tcMazfmy7k6NS5hnXie.xpt1ggMhzZGiYWMYfzYs5macakZA3pj7334qr4Bj_xjQrKLzFLDKUWsTCutmT2fW1YdepAgtyxcC0f6EJtEqHTKJJUwNqg3nceKyg8j8rMuR2REy6Tsdj5Arjo2NccXkHtg3mBoHChir4HQqVcRheRF.yoFEwRxA.ZkNwOJkWAC2c9GsDr1sWOFvrsboUtdQ0ucf162kN7JTJ3ZqUbsp3isPEpIwIRTExxVP3djDVPYWCQBfDMPL3HIvT30ZP08hd_06S63dSX5Hou9EQXaQslQYmxgmRcSttPoe4v2SkdfzzvSF8TP3uE91k6qCASHygPDNp0PPOW4Oe0H6ceiDy2iSIjGPPV5sYaN7n070DTnMytJMEERIFLScVCHCuU_9A4yJZS.Fe4xJKPi5SdvE2H9F1Qal9.9gvurILJsEKZYAAqtN.27ur8pKg.58.c.PCRYgY2bPhRqfVDul1KfMYt1zY7g90nW8pODqMx6ru7YL9Zv9pBvlX0J5uACis1D7smG3U4QAnI.cA.bTHCZ72yaerxJJi7IiKWV8KNt7w4sDqSCiprTjAKoMh4Q7bCD.RvM7.rSxrLp3nNG5Wwh6v9dStA4_Ixjkrefa1SqcWwZ9rWten3GYMJHfzq_OpZYvszYkfG8fjqLVLA.9qHIz8FywQe1he9bvJMOAs7ugnq7FPOvWtEYY6IPyeokutXqHc_uK3VlwNsiSTVL79NE4RZhg94uwUFHMZtVzzH0EpDXFDySh0uBXc5Gey__MgaS4i0RGBt7t79u4XggKs4IvTO7bpEbp9yt69qnNi4irr6kTMHfk.stsmt4d62rN_a3iMM6P7.M77Ol04JCgJrbeMatxSKpCwRnlX4ajxdYrWzoaCfemRCgYz_EO5VebQkrGoIwLGQV4O9EFNmQ9dmVAKnMEIhjLWA1mGpmA3qmZc3puQSc7Noq0W_kBlz8a3iFHYcBG_yHx_Hi4AyFy3AmlHfKIWzWlK04lqRN1K2_iFh6Ja0ftNHlX8FzCQ9S.wxCyNNxaPwbHyCsCtkV42h770DRc7OmKeGNRn6HMA3AunW8J1ycWNLTXIKZPGNzu24B0Ci978UmlHbfUidPaO89uBht9wFwXCgdB0SkFagEAuYd3TXOzXFlZRteQbbWnBDrnXe7r5jPeScOtb0JoTobGA4mxTguzz3DtiTpE5YwUiqszIWkOiVfSnlJJNOq2UEPaWlxUKqO4Fldw.3TARVzQGx6HcF3I_2AXkDcsAEdwgXHs.ClTBWdKb6rs5hEygf3y5LjW4PLK9uvEqRPEQzLydJH2rl2bOmu2KmRXJK2Igu5lx2lM6ftgM9eEFDzrTCpxzhVex7WxpWqftNoW.ZPOmjWGiqwC4vpM9wiIryV6Wunpty5AXMNor6Xglkavjm1Fm5XDk7PAfiJtADuA"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f3b00909a73892';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\/3980765124?__cf_chl_rt_tk=RCZ7XjJ4Z1d.woSE0PiI3fMs2AJE8CDxVYeoQyD5LRk-1739102306-1.0.1.1-pwk5zp1jZfdewqUmCaP0ypfNMFkhw.aE7OUZ0wHS7oI" + 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