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-affiarl9b.mit-edu.top/post/6475398012

  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-affiarl9b.mit-edu.top",cType: 'managed',cRay: '90f7e6a2d90820d0',cH: 'v1Vge1BI2YIUbyOVA5WzMUkdx43HTH.NyABGQM8FUBM-1739146486-1.2.1.1-8v34_vc8Ia3jyOLQPaSeLYgjfp91A.dFuHqNZW3mFAGK5A3fYZD4JPzEmnGv2HWI',cUPMDTk: "\/post\/6475398012?__cf_chl_tk=H_387ee1tWMTAKn_QAJ18oi41_swq66puCD2UH_6fK4-1739146486-1.0.1.1-xFDQnFWJaDcEC0_nGTWPMqXX19uM7_PKlfWWNkCuFdY",cFPWv: 'g',cITimeS: '1739146486',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/6475398012?__cf_chl_f_tk=H_387ee1tWMTAKn_QAJ18oi41_swq66puCD2UH_6fK4-1739146486-1.0.1.1-xFDQnFWJaDcEC0_nGTWPMqXX19uM7_PKlfWWNkCuFdY",md: "OQKtAZePkw2uaQV8gYJiRnlpxqSPCar1nue2oxMVP3I-1739146486-1.2.1.1-Pom05kIB8ItOGN1FTQ0CUpBD_H_xXaiOYb5vXa.X3JlF0cLwGgC8cPWgOSqzFNYuxFC4H0_nUCYjEDAvW1JqGqTEe0ok8bY.EMwv7NTdue7Ykt3wWdAQRQ.siJndkyKOOLv5vqFPpqbFISkiWK5Y7eWEMqCDK8fSm_6.LQUY0di_7Ohb0PFBbASglTt_nJy6t1aPDrDNpuF2yPbq998qWzfmZEpP38fmR.d5QGoaN6eQdiHZfnVUT1Khppumz_tZ9ldBWZAvRVdx8wOSysEV1TVYZB6mCkKcz.qRkTkQAt83rcy7jNuUCFju_l4bgzL3l9ZU2L_btlGePLeY5fDVe6e5_pWrwkUaujNrNBx2lbdYQc7fAGkbC4kv2hGwZmrh6.RWTQaf7rgeFAru.Gq.XsNWExqLLv0Eu3XRilBHyphN4elpVnw9FEPj.C2KbwybEBmvG2y_vzBe0huUe83D6podr7Evh06CDQjZRIc3K_r.oz0JdQ02xlnCrKdw7Tv9OHfeECqHPOrQKVv4kS7_2J5xKkOsK5Ex4KA6u7f.aQdGvAgamGdTHEObqXDuTE6DTyP0G.0XzSFgpFUpfWm9dm0ZHtSdc7vfttmXqZm.8F3zw8CnBVoXvKf2EubnZTAi2wQAR8IOwFomGwZYKyg3KABpLwL8grMast.yUNcVFpv5TVIS66hVFN9GfK21KHZ7LfCE21qlcQCr8StmnJBXkxPP9aODfChp5giBZrQUF9bN8qhj3ilel4WyqeF_Y1LjZVTrmRu5Vz6k8XLsrcq4xePV9BvM0pLuUPWdCEkjS1Qw1pzjiKQkSvhXB8KLiyqPQoMe5tPVhAbolBe1nQOSXPJWViuGusq7.vuwmpphjo1SXxke62obetXOr7Mb3GhK63GmhRqBg78ncXIPbxBA_kBwoIfVto8xuV8UOQtanXY9tbbQRmghLB2DeC3NSlnihthtTl5OVHYwqrhLYUhqC2p7.DHUSD5RVa6ItOSz5qRnnJzwBAzPa7AuUqGANu3KM42xaWNcHmZlGmVwVDPC5BDjYte6QIrh9PTHJxY3zZdF4cKHH1jdZZY5D5k3fdmpl84ys88UotYPE0MSEQcnDlv5D51TISXlJSkRx_LcRatpbAuwiJk15tKJHJ1_vaGjFe8MELaq0kR_UY6GEaT8qQZVfQLcCNeFm0QBMjrQwPx.xgM7PxIU.T5AqGJvJrDDCl7w4dlWSwz0hvnjDHwcazsuQTR9Z4_1HJb_GL23Nygfi2ED2mAlYA_qJecqPiOE4pzSvdfKUp4C7TKfab01P7LJI1X.62xWsptuiyh6Jc3Iqcd4UZdSQp.IwKFanquqCNDls8jiY0l50w8jaOX6Xxkj9xu5OpNt8k6BrULOSIjeeQKMHq23FCPJgEZUwvn98J2GqfziXqyVb.MabZ9TWNNSVuoq9.qh8qio8P6F41tc0xbFn9tyuo8yJn52KE.Gwv.f0TXlyzTQtEOfVyj6DD2jxkCBFCujLEWeDHYBMknTc24VlALbp8PCZX0nGeQwyYEG3LinWH.N5sUCLpuCEbK7dS5GX_GWlZYC5W.lYF6xdzZS0JbfmWa2iShYVm1Ov1pDmNCNLsUctbOVL4VdGo7Nx2NOuNxwCUk4E0UjOfJp8McrkiuhLCIlehUHMCO14QdDAXTrky6F46iWms610.NEF3ZYzd2T.J4TVOT.Q_MGb5uywe0GuWDn7O9dE0tt1t_OVn0zAhOH3ZZTjw7dhYbqdYIrcqo7AhJlTaVh8x3HWsNVXvgivQNFQwVnI3QBTvMrFUr5CJDTaWLHdDuF8qVNqZktd.r1561k.M8KxodzCCmtMEWPFT.oac_cU9kU.qig_hVUNlPKywuulC4cIkQ87nnTENNemDhB7fcl8Xsu2PQWIMBjE2VHLVgxN_fl_U4XP.IB0K1LA5CdVmCpVelNTXxmEduZ2cq0vEMRdvd7FYzeIbaq5SBZW9EgzzpKw1ZQ2JGNLdHRP.YGmDOrrX_zbql5GkNQYYnhHhjK8MRsA3RseuVM_OqV6PiSuuy9iR2qhHMyAPX2MhgAxcROVdWvSbNyRf4oxM1fUkuDMUbzfGox2wb3CxvJYVKgF.3fgCjspzFYaezZdynNoGMCFVQZrR.sjwpNmBQ0wfgWHAytzbRM4HDAPuSpselUwUG99RQm5lKlwwolBTVh_kYUJMsQvyG3lM8GMuBLeTbiPD0_04W84sUc7_sCqH2zoNmS",mdrd: "HhCWSwR7YCbo.irqL8aaUi.MTc21vEYDivU9gktiZjM-1739146486-1.2.1.1-J.YajhbuydRMOOqx0U_My.b6X8HP1.jBZjGqzWPKtjLcGQDhTrMU3CAXr6CkRXawPI5kGkk6BsZtrzgcJOV_6grihT1WkUABNfrPu21YV0XH4MD9VbxUJvUtEFbA8iKFa9TcEColj1jMPsi4wGqeEz2CD6RijMTOVXi2uvrefC9TfO9A1KbUPftXPVICxHmr8miha46M5FmbJtXuy58NIkm_hZfQtZW7C9ICmWxBeW1B7S.20fqZCLiRFd0tPcSaB.HFvI33IaRmo6GAMtOpD7.uR5zvv58TWPTXcgkmJZIxzbJxjcGnaEz1wYEfdJzCrxWvmKorIhYLqrr_hSStJ6LRdAYz7l0nEcIf6V3sk7PVJiVEosO3PUY0RKczB9iZ0TuKyS6guwcUwt2w3R2_zDJuDbnC09iDrDIROrbd51FfFdjRdyt0UMFfNCAWlXwE7xLUhJmAYeYOBPSPOYmPZlsYE.P.wqg.ZjpLxrHOxY9tIyWgYG6pC3_lRgwNlNUhqHnqAMXCKE1KNDTjrOjT8ugyLxysvzXpEDkLr4aYy4BjkDUA1H2zfgAEheStk3sAfrmorbQb.vUIDOo0kgYiwyh.VltAy38jplYfAsAqnN2A2vfuHtEyqU71rn4Y7H2yL.wlDTJ5cfogtclOzIDENURA6qN.IDylvhIvyPY_7qVkRcwLvGkDkETEwxTbJ8ta.uToGUQyA1rVZsfHHTj5XjPdZ.is1TzWZUlW_j4OmAX7E_Iti8w2nfDHYSCoU6D1O9rlUQ4KGvmyyYl1pTAVxj.dlAJLludJrBfNaN1U0a0hmO3mnd5MzFD4Xd2aAmZsHvxhCqT..LzDXcW5.tkKXYq9Vp38sJsOSFVj91Z2FtuN.7dTLu.HMUFadjNFeP6zyAkCLnOvgEXOfNugxEMq0AC5kJToMPGZ3v7KMGD7AfX1fmOApZzptIb0iZ7UR03WEtPugB.Rounm7p4BOPupC5s8thxRk3FkcvFk3Cu.bFGZvana1PSPS1DKEXYXxuvNlKZ_3AMVML7eRhfuP430awpTFc05UlP7.5_Ctopq3JY0jaegBbc0dfvyyhnMF7oh_lYMS9W1rK_ZcjY8NjfTRN0YmDs6lpYcP6x62NJmRwLFYMRW9DjiRRN1gbzJZR8ObQ6HmR7gz1oXGU5.2wCfsCVoiO5C65bG426njm8S88vJfl6edukDXuWJr6Auorb30_PWXiV.FyoGlgLRTYtGTFrsXiHY.Te3tYTTaxRBPZn_.Oy2F8msTe1G3IknbogQkHYx8CXDAaEi2N0TowfLLLe.t9UPCE2NdghNWgnMinoOBIDfURIVg6xqAZKMu3NNF4id.g2PdeGZRkVtx5sncRyj.DxyQfP65_Q.s1ruzzrDiY71ccKiXw9tv0U9aAqUwLUabagvCIihKJ61L2pEi37p.WVm_1XPAASLZMBKGHyU1EzzSAWRg7K0_vwP53ZpqWohtSf4ds4EI2sn3dmo00_VEX28Fgx_5Y0WZCens6c.uSbDwEeYDfbVLB1Y4OkdO3LpMdmKq9kdiDZgxfuUHSpMURzTtH8IoqgEHCpqvSkce5dd7MVbqjKf_NFs7RbFNbpttu35Tw027.n0Ah2jSkikdQi9FtN6MUacwJ4pVc6hcIc.0Kp.Sa4z65vlm3TxVSTavhs4k2N3YUY8IrZZzFNcNJ0t8euWEdYrTrIG0dlJpSgfH2MqQpFYMwp_4M5y9LOsdrhSuufNZXmNtx93Tzm4YbiXvcPTWnbbsYgf4CQBcr3SKwuEWDBMMLUeTxnGlEadGCnSmLWXHBJequiKow"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f7e6a2d90820d0';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\/6475398012?__cf_chl_rt_tk=H_387ee1tWMTAKn_QAJ18oi41_swq66puCD2UH_6fK4-1739146486-1.0.1.1-xFDQnFWJaDcEC0_nGTWPMqXX19uM7_PKlfWWNkCuFdY" + 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