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-afful64xf.mit-edu.top/post/3481562790

  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-afful64xf.mit-edu.top",cType: 'managed',cRay: '90f36f46a8a2c9b3',cH: 'tj4x_.5IWv_F.WNzM1RpH_sr3YfBLWv_Mr0uzB2eEzM-1739099654-1.2.1.1-w5HDKCx2oZeCZIcP5PZpxLfkxdBm7QDcpb7CH_7s7VjFJEXNJheAr1i.4KmodnQI',cUPMDTk: "\/post\/3481562790?__cf_chl_tk=WXwJs5YuTW6Fj5Ym4wedSKxeSoglqXwV6cqPKuMn9X8-1739099654-1.0.1.1-4ZRFDS0omsMcMq1S17AygB_n5kpBSx_zdWmV1rtEtsk",cFPWv: 'g',cITimeS: '1739099654',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/3481562790?__cf_chl_f_tk=WXwJs5YuTW6Fj5Ym4wedSKxeSoglqXwV6cqPKuMn9X8-1739099654-1.0.1.1-4ZRFDS0omsMcMq1S17AygB_n5kpBSx_zdWmV1rtEtsk",md: "Jpt8_20PQ4s104dx_hngY1lv7WJ282JOtmBcFdWFeDI-1739099654-1.2.1.1-1lfREmuLLGAs3wq8cbF52iiZ6dLWAwT5rfFA_sq.mSjTGRaSBFmtCLDRnhJZckIlS9TglogplCMoVXmTo2YwRxZUJ7bPnbbobaHoTpZPl9_g6kPLwAeflSYMKF3UlMtcXWzV1qqzYE_yS9nMTAxlx5WUYMcjufX1e26KMKkAHxl2F9D3yGl3Iu1MwA4vhYVlbwnctne0tA5PQ1Ra3RQDq9aO3mYgKOPWoGTZ7L7PAMTztejDfEdXXYrkTpAaLLHWP6ORpmwmG8Rq.V2.voJlHbpX4csgZwGqgZ4gj0.RtURRphZS0yaHv0yMyEmYCXqhSHFZFKGpx1_JvWI4Wxi7sPlOTY_yymR1t8cs4l0Sxrjd4oPYQt0BbNF_HJBuBRoYsCqk1lK5PidupMq_NqxmzQJqln8_8Gy2M1aKi2DN28n25YaIkYd4mCzQNsx_ZdPLglqFOFjz.G02k_rzBAMOm2v8mq93Ueyw0qXMAtm7jJUZ0vBKFpumiWF0_VpM2qid7ua9QT.GqCBky6vK14Kl5Xz2QBXWKGq1G_hjxeAseHEL9plapVoWrEEsTE3U7C_Ax94bCJP4foXJaeZqHFzjuDI1fi8L_YNps1aqc3P_z9KlZBQ4AgK3glBNyDqyHkm_81J5AqBuIp7Ri0zlW.kHtjzS_waK8_oaCY.J6B..Gv9ysjwd0R0uY_pzrNfe50K6x_yTjb8g8pbdYhnXJb_A7cBKNZJNswkioRdo0YOzwZfv4Zv0ftC_uq37JG5yNzg4Re.NIfk_YUBvo1.9EA4dBRTe2CjtJ_jvLcBOR8N_qnCfCv57QZ8FwGqSv2nYhI5SkrC8kL2aCoqdhA9pe3vgsAg7B4QR.wfyT.AbspgkZsb3gHtTAPFGvdFPwUOlq0x.qZN2F6j5E9W5W0mKdLuXaX.5p4I0fZ5qPkjRjeF2lzxh7GB1hn57yjhTPTMzLC4I7mDZBn6beRXM4FcU5kTB0yGHXPr.25XwxNUTPb.OslYN3cfkOgXV3JnnFHNtyJw6VFBCL_Ml28M_Ek3z9ibHOs8EXSMSWN2cYSzeKndl7V3R5OhPnPjBX6jcmZ7QMoZcSC7qapkKJMkmhEGq8kqmM7vIGKsabq8IHspkB025kpyjk3GZQIGTW8tq4KkptwGoGS.7zJK2u6byJilvrJgnkMh4e3Za0hf_aEM08WzJ5C7F69yK33oE5R.KhNfH1k5TNl_SDqI7yOWbDObfNjO9QfpoWxJ8HCFwTFglop8pTZ1AIbp0AYOt4VnxVBd7e8AhgzQQ9oPyCHcnOohnPs81ivDk5nkUvt0VLAmtbrnbp_ZITCZZUxLJw1ILiWMWtapD0gI1iXS86qW2_8ceX9RFsR3fpCYWIrMVuwA6KX5ngKQ5exXOlHLVi90X0pbkLOj08.t3O4frXf7quWMyRXmSTD0t1TP5KTzB8BF4VTNj4EZHHxleP60JCZgTA8QdY.vmljtt0r4h_jflPOJPI_uSeBgHK7AxIcDUC2Bcg0of9ueplIOswP2jqvbNatPWmSyIzfqdhqt8xBuLht77sj9eNIoVK19UyCe.07Qgvs8WfATemFB_Pp4MdnGRuxLgIA14RssqZ5B012vp2cJaF5iz3vbWX0BFOAZdd0oxyF2CVCEpc0VwLlPj8dBbl8BpMsr6zEqHV_4SSM5NIjTmjziAM9AETcuKTerO8IxtHlwBmaPycPEejMFqI7CHmt7lt5kEMxJaSI_HkOZ43WjNexIAO4H7V1MI4OVanR4icOLE_QuJYIlOYgclP1Zn6SIXYTR1qDZhwPMgJnIwCRoUnptE5gcJHTGCeJy7Hn7lSXVHVjp3iTgBZ.bLKBvQNLqwwUEvlsqwQa2uFGLyhm44vgvpY0dkb6qvAQzMzLoIxKYqLk3LfsMafE0XbP97cx5ZDYlu6V6j4rmDalniYoPBro8BuuXGOupLmwYF03MAR9bNPsYM5jqBU6KOByJcnIURZ.2fUsihH6H649S0Z6ihpnmBAG9rAANxYL6X7nFufi5VfrlmFrcw46P5VoxD5Uwegorq647rR09ZRM_1huNgeN9M2bzTXiORRLmW_1maRt8waefiM86aP0.o68QGzFgGuFuBmsomDMFVmqOoE_N8I8vPU12e2HNnX5PL7rzuEfQz3WTEnj8G2aO5ltJKp7GaGbU14DhgqbnqMPJHYaseTPoQY50iwvCNjTVHi9.pExu6CiQVTVAAgjpY_2WbLpcZ.YE9",mdrd: "ONcPVdfa9YcsG4VTDUfIYQ9h.vw.qpYnoKk1.LTOpPI-1739099654-1.2.1.1-h5wZh83a9ilb9ASg59aRdt3Ank339thV6Z.FRg5UbCaQ5cKqC0hz1NFs_BJpVj1a3AeljHGvGdPb5cfA78EhLfGHhmgZhCx14y_7AfO4prp7oa6lJOHKA43DCCg3we7wPl_RCBhAczy0ERsNyoDVYBZ5_sQca4AGo0CB298l.YmVWDaLehIxjkrM_c1_ZKg2mCNwmMoNet1JDKZ8zB7voAKiEU5ZYTGMm6egVL0S51dG3av4H56tfTqm__C6YpM3aBbuUCuhke3jP_uPaCcMreOuYD4sCniigrf9B.JRWyYECaCfw6DQqPDP27y8olTS7n92Agaj8KZQER4wtFJkCavpFDOyPXK95VgCsRS3oWK2CgjK9Y9HUeLCQ8JdXdzlYnAYymMTfoK1MO.bcpejZwo8HPo_GNyK_4AMjkrXpF4lp7owJ2sIhaJRzUBBCwYztqg56ELrHBY927_kRMZMFWq5bTyBzMUbKjE6E4wu65MOLuaRQ_WbWnV5DeNEZ3B4HYVHfwoJokAiKXOR3Zx.OB4PSelTHJFsMAa7_0Xi7QYlGH0ucbWhjaVOFk6PLnbaTgiEN2wAwMv2KCDh5p6ueqmHcFYEM5IpOYwKCOa_KVDvtKDhuJcUaH1TnUPWCvWIkBrD1DsNlsJGKNEmkP4cz2DgjxpheH7HLYVFfpOYITCJI4ymlCUbOdeWtrOiOWClTEwtMAawi4w7oEx1tVa58raHCrdXR5R39d_bpRxf1ki2Agm8uI1FKLPVCI6uLg.XnvBaQLWNtnDTfTHmAU776lGiKUFrApQtwXqBm8z65ZBTLSN8ruZq.bX6IGO_RANMup2Q3Om6J5ZROCfxODwlmGjBWLdsS00ppDo9I2HaJIbSXMwkN8LqWvrkqZ0zV3pNnGMBBFmJNPRybH7b9ART6DSjcEghhR4bewCk9Sm4s8RR88.zM295LtICbLCyckeq9V6t9gClhyJMmSdJQ107xd0tYEuGXOhPKHvDtWZPuGtSNzaSlc6shZlF5RyiXRycj52Pfhq4kWBur4M9ceDqo_5cw56MsSdZt0I8HyPN2k9FHNLl3WzwQKUCRyn2CDHVTp4UrLfN138tvMaLUiWCwrzZTQRfR0dA3yhisUrPASLy.DxIFoecPjB3MgWPF9g67gNHaCTwebFe8h9EBOkgRSMlM3knxlZgi8GQy9cWMGNK09K_9wvguCcwfqfexuSkigAVGzUbD8_KKxJ5lvRHoFdTtYO0fh3zw1XsSeOBNuuEivXmSQWGEwdvdu13hQWHU64_ckCHL5R5u_K11ZxJqJLwB66Tw45UZycYbkK4D.Uv0HrvealheolYEzRbViXD_YmYAnRBaUh7jnahN0TXXRtYg9T7RWvq7g_5S9CBEEabG3PDFOtGrH9gebh2jAq85JIFVf_RmuJgkPtxSLG1NaMeeCTY1rw5dRowVzIgRKKk3ydIyp0Lk5KTLumoxwctH0J5fCL3pIT_gD7onbajobKBz326SxF_A36eGD0fgR2zSfw9N9HAmalwzVXmOBcsCc8OAE3KOQHCRUMQ42GsSSz2Go0Pk1laWKEvSLB7U3DLFgh2UflRBaReKmJVyTS21UdwTmura2hSa2M8K7SyNR755DFu_01x3ktTHmsZbdxXl1Fn3i_qCGdT4IlbGdRUFVSxmmuf5Ik_H4XOsndnhuDl.gWNEdSPN43J_W3wT02jQ68JRXwoaASqr_9KKW6EDtnS.xFnyPPFLwCIYwGNK.NOoKlif7_T0raCWtlV0IVlH0OTprRMD8BGjy2mInVcQfx.ToKP5sW8Aq0fTTjy_ccZwjF7qcLNTVHeN3Pa6RA"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f36f46a8a2c9b3';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\/3481562790?__cf_chl_rt_tk=WXwJs5YuTW6Fj5Ym4wedSKxeSoglqXwV6cqPKuMn9X8-1739099654-1.0.1.1-4ZRFDS0omsMcMq1S17AygB_n5kpBSx_zdWmV1rtEtsk" + 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