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-afftstk9a.mit-edu.top/post/1260397845

  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-afftstk9a.mit-edu.top",cType: 'managed',cRay: '90f70d401d63d6c8',cH: 'zztSrYU2hE2ylOeXtnqVDdkv.BF04yEPdGPaLH2PiZI-1739137582-1.2.1.1-5V73q3mHTzn94DxJpwqgZRJxGWkasJx3N8MK58PGO9.TZSTO0gHSqNCihjC7QXM_',cUPMDTk: "\/post\/1260397845?__cf_chl_tk=a7ubludjv3venjbPr86Bvf5pLrL3BEfGw2MpOLIx650-1739137582-1.0.1.1-QRZRIpwToq47PtQ35Qzd9H9npCThICWWAjSgrzN8Hto",cFPWv: 'g',cITimeS: '1739137582',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/1260397845?__cf_chl_f_tk=a7ubludjv3venjbPr86Bvf5pLrL3BEfGw2MpOLIx650-1739137582-1.0.1.1-QRZRIpwToq47PtQ35Qzd9H9npCThICWWAjSgrzN8Hto",md: "Bo9FSJiA5Hkkd2NbKb6VDrXrwSC647WNmBUTQEUPNVc-1739137582-1.2.1.1-495FhmZ0OWZHlTUFzvMJrP5CGv158gTMWNnwV5klaJRdV3SIFjA0aJByF9s.rjwibhDvUjq2aCD0vSjqi0yU6eO4A9fd24ft2I3AijWY6ITp3IEpsusR3iNZ9GY9rgCU5g64vaVURn2eOUX.7_pmN1Rkva8Mumhuy6KZksgniBBZdSjGAqHO6hM7lwElC9Yk.IhQYPhFpYNx0.zKGCIWfTKIcRSQxbI9MtLrMuTgdl88cabRfsFqAgoD3jA8lhR3d0WEphx8AjNriCEGfVKiTxG0aZKN0DGZi.NBF45XJxmxZCvZtquWDUIyy2j6q.F1yn2QxYpi_uAZ9gfURCI0N2.giR7ATcC36FCPtz4n3kujWvqxuq2KRgIV1uOHRoWSvOckLiVFjgFQVnvs4CHtu2VxaPx02loTSTv65fOmn7VH3fIHUdUDvOQ1_d8qb79iebYE77EpcW4xlC_WGDVrnFyK.g3f9ChVIOnnBeSGgHqa_09ev1kQYEO3iwLRRqoFULUHrhJsJBC69B2Cw4qoRwi.qvnHp8iCubswLN__ReXogpXMWZkCeEIVksZeKspT2DyhSh.eCkjzScul_sY6pzJpxMS.14aRLPYgTbE5NwQkijNtZbwLI0M.jvZVUUC_IL8r9b8KvgYapNRuBldVJYBB_Dl8O0xcXtVkR.KrFSX__U8a9nz4YNtSu5VN3kr88me2lTMxCqfWQHP0ORidOHFpvsK5_Bx4VgDqSnbhQyxbV7nGVlIcE9KLi9VItzeGwv4Rg9Cz9HYq7T5mKB3EldBF8ISPkConDIp6d.wLY3aphU11Cmzfm4mAYKFbYFwPlrdWsc0L6pLj.KUvAkX.bENDO.CpfNnnUs0ddh1748peCjsjSA73l7.aFAgxGy8k_p6mCOu8qAGequimTHXClOjMlD7Fwn7KSuhTO4IDqZnxE3WMcuvkNgjvSf_8V.cViRK13fN4jzsD.FfwMbOzauB02kjGWu6gVJ7LeRMoRellv3EhO8_57.iB_.TO8hzOOi0Ydyn0D1L.2FT0A7w7J2ZZim2YCv_vGav785se2CMTlGs79MoxcWeDKZ93tooxwWyqptVNogNrUv7lyPNsAU_HbQYLRE9.O6o59k0fMEjUfDnANS0PzU34khT2yYBmwqtTyU3MvYRv.ng2guZiXTWw9NGxjBP9LsO7RSBSbCVuFt2odHkkyS1po9478q79NLarmyAGgHBEBsdFVdH8QUpBzEMNJzDWDtBUWzP3RSWutQvT3X3mytJt82F3KdVZ4viuS8tFWIvuVE24n1UiISfB_MHQMhSn4DrMEYwNLXpp2EZaTEK2DWCSz.6uIN4B4k1QYdgOEJV2fl3nPI9IqnNLmAPUA..1YdgxBBmbX_d3a0MfX6afjtZoV758cY6n.8BxF5MPlZJ0wp4wrlNp7XYBrd0P4nEhCAaXEJC_kJ6HZZsLRbH8sIgmY5rG8qvvoixVJkqeCeNyoNl9zZuBRiORKVf6TyG38PsfhqfPdtOAZIvdqcHlDufmxoJtPa2LZtsN6_yoCk9t8T1aZiv2Y8lfozplYRQj98jM3Kph81ex3hpsM0pINmRv9rwU4XiV5aySwhi9FEOmN1FMJPyhvQWDb7RvQCHW9mngwncvBg3lf6QscigHxtiJX.B6yrZnXhWBDA1k__SSgYqPXi30.tMdFflHPv4cT6BIU.X_E01vqirMIjWFvO7mFX65qA4vEumbe0Y0l.ORRIUDfGsEFwqLmE.weTu_80FDfERQ5Hk141V2wZHAZM71UJwFM9F7XdsNulXuf9YpcffUqWOYMx75LGH7Y5UyIdvjjr5l2YN6FejfnnbKGxhISknl3R1RCm2rJVsZn6frq0hhXqTUWq9f2lctZJnce9wmZxV5pbhmhBMzdSn5.XOeJfvMNHcid1etZxftQ8NcH94VOjb2AVgXpcZ.cXgauqC0AGCwaDs9ygy1K5rdZo6jk1ZpbB6EQZccNLAqZKj0OD2nfRWVSIdzitELICrkQz0UbtqnzE7xrtQUG_Xb1GHLvQogipSO8X1WaLstsxkvYs3TMu3DIyORE3Y2QA5V_PrxJdR3G.6kE5ep2UTNt.pV7kBHkE5I_XTPnzRIb7QUtJJ1gvGFcfS.UqG5KvaxmHTEgIyvKnhv04h7fHNArXCL6SRiVoD.GbXUNcWi9VJlufQH4QdgQFYSWsSRDqc8hk3P2P.etVQH.BH0A1_oZCpmX557qWR7",mdrd: "ltr0J7T53IHaCC4jDW0hD59phcpkiXsy6r0oD0TgvaQ-1739137582-1.2.1.1-PoB_jKkfdzMr3uyJSCxHE5LbD.MfsOBvURuqYg6YYNeD_Qel0lYJ7HUErzPQ_5rKSf96GZ_uc1SZs_xO6ninM5oNnVsnBdDlH7i3yIily2PjcF0Zx3EpF6.EGh7gahqn0GH1FpGOkkPBXFJsjRsuMHepal3na4_0D2F6mZBC_O1K5T2BhRkcsPKm4GOaWs5FxLVwN6bzU9HfrJLAOHtaoq3WwwGnzjc1fxNj.YCRfUUOkYVlXAONvLi1QXNZhnGrP9wSxDznkSVkOuXzD6IUi1kBexoJEa7OO_BTCx8T4XsLx1pVyp226kXEeDY2a45epdntDIMMtRnJ4ehwOX4_01LkjOtC_XSAY4f97az4N43Invo5ML8hEFnQ0utaHZElEhLBnKidzKwZhfgbv977RqSgifjkzD5Vq0AP3KfeGOmlKx6FMG_XcRgVeMtY2ySNr_ZeQ2FZCSQStiK.CvEMUZ_aJ6VOLbwYJsDRLgoL92M8WfMepx7FXyV5pmRrkSAlO8CI_2NXocBgmbR1kU98udD5yPm2TJkuanx5ZvGUSfAQuVoOz.F8gzf.L2Nmz_inDEJ2yE7d7yiBgBdnfzYCftiJMpmV2LysSnGnk3_0DWGSBnt1uffwGk_kj4b5sddMlSOThxrAHwvr0sDHL9c7aTadszRDdx.Up4gYXKZjqhdUIdlNlSrwghvqzTmSSDEGKvSQh8.07NdMnTkwLCQnuVqwS_wwSFOdI3rhfVQ0jwWHOpaqr.H7X0aQqcDmxCrHqa5JbpJvTtazxwgQVguJ3Jjkg0eX9KWd30Dx87sjB5mOrXz5yAhR0zbGU7AfloxZOG1GHN3dhp8Wf87iLs4YeMElHoeBY75gNyowRgFwDGxGofDEjopk63BGvYiOlbemIVfaiQG49GIugYdytquNvf73FlDO1FA_KRKWVv1nSGcwSQkYcb3m14eB0avqnpbgb3nJu6Mb9ULk9hU1t4tF5IjMr5dtZSI1WQNhDptyecINhVPkmtRPDncEW4hcqAfujTwSpvmd.pVD950Mw0yz4I8OOdcV6InoyG9T9RaQpSrYHcvY2dEYmhNcFj3ENfx3DNeGm_Oy6bRdTcGpBtBWJ2LPv3EBbupZ6wYHxXhjHgp1zOQ0T_7UDwLb_gMSJsz4bw9JIz63llIfBkeCZJi.oGrJIZr3mT6WaGKDsi_acP2pfYX7XfUI.Iy59P3ZDLkMFt9tpSUX8QTEu85NhpLUnjBC4bbP0GpjI3B3BusCucVv1nBxuc8qksAnm7BY.GetyDL0czlamaMOOyt0HdINUIVF_KQ.aKlKwtKqBmgb7KZYxh9q8LlyT.Qpmd1UGyTBUrg6LKhQV8BXoNIIPhE0CaUtLCJP2UWOfuKA7dryAYAux3vw6chStea0S8U2XslOY7ec_3O6Gq7PscMXZEsb7U8WMHSl6Kr8p.SXlwf.hDni2DsxlxB26Oe_vI7Vu2GP3o5n4KG8UNzLSxMRIiOHlPQP.mVVnSUM8k4BjesT2vRMHsGyG50UiQs9pvC1zH0Hp4sh6CXbfad2uqKbs9qYKKt2bCe3h4I4WJpRz22p2_sJRlQoN85JfnIGHmhN2tf4VAqsuBR2U6d4yU7n6das1ovHbUNQahFrfBIM5at2Rp15Bi.rrbGyk9pj6BYCw1RzRPwbwdz82Cm5.Y2FVgh2gPWnuBNCOqxTR5_wa_t1cONm1DChl0Jbg3SqS3mCyvjbq_endodUEt4DHm5950xsZioIGTSq_bqNVq8Ff58uO_0DExjSXN_B4tsQjijHbj5y5wXJMbYT_JyvBepQS1KkZwZYY38fLbrEfNVH2EfuRmhoxJNrDGlUkoYtgkZ9zb9i"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f70d401d63d6c8';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\/1260397845?__cf_chl_rt_tk=a7ubludjv3venjbPr86Bvf5pLrL3BEfGw2MpOLIx650-1739137582-1.0.1.1-QRZRIpwToq47PtQ35Qzd9H9npCThICWWAjSgrzN8Hto" + 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