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-301961838431.mit-edu.top/post/1420759638

  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-301961838431.mit-edu.top",cType: 'managed',cRay: '90fd105d4d4582d8',cH: 'XeutFLaeDjsocUHiM.gT.5pxI7M2TfttpBhiR3LEqE4-1739200624-1.2.1.1-Y9ol8JnK60yOx0gOjT66rdr4XZurI1TTyQxiYoEarQOs_IfxALPUKwOmIxQUZwgt',cUPMDTk: "\/post\/1420759638?__cf_chl_tk=G3UcotlVu1bMqJyUC875ysbszmLCrF9nqyXk2vv03Ls-1739200624-1.0.1.1-2doj4h9EsU64Veauj13JajPD88evs1cjWdDYhsiDd20",cFPWv: 'g',cITimeS: '1739200624',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/1420759638?__cf_chl_f_tk=G3UcotlVu1bMqJyUC875ysbszmLCrF9nqyXk2vv03Ls-1739200624-1.0.1.1-2doj4h9EsU64Veauj13JajPD88evs1cjWdDYhsiDd20",md: "BCfMOodmAi5wb4r.npx1RuJzJT5J_xW5Le3MoOgbSKE-1739200624-1.2.1.1-edPeFb39fBB9JBvvtxPppg4UQ5wy25PM4iRH8U8V.KJU1Iebqcudtne0dffC_s3sZfY8R87upzAHf2LvfO061N53CYZKt95Sb8z2vePzOdq0Cq5ScKa0Z8en1ttrOeXQWmsaM89rWDEXXW7cXd0j6.Ws3aj5staY7yvr0nCXcszm8ks0w3IHxKonw8caFmFgVZvBL0lBIcD52NoFt8HMmdusIhbACYs7KcdZPZZgU1fqyqn4jxRNxYW.EoMK0l3eKcUJ3d_Q1h_HYFVSvPq4ArtdvhmozlTZ2aG92tAxW_DzEmYhQMI2THoCGQsYgUvnw5Nt01AKwuQ_MIeNResYZjOWRgOTd96ocf2KYy0feJg382lFTl.HYVFyFHRtGY4mVjpOGMVeB_5ddMQTiSHwyPmKkiWotazmNKGuTz7MkXiM.FLdxyrnAo.PgV.3S9WEK_yDhijRulk_r821LrQ8NygfYlWiOYo_jZBbQNt.0cKLtFgaiBfE2UKaocD38YiPAzM0kP5AjlQbtiZ78nhGvdaJOnFgfnnx_TFz.9uizMDwlN1FmILE_YC6zjZdPho2BYUX6IfnybpsLIjSX.GxjF8.43l2j0ZMAOu6mG2XIZ5OP0oBahxZUAxw_Ms2.2xGGUGc4Eqm2R_TuJZmWlVHGkA2S0P25lXkK_PKzrg3VmMHTJNf.MwhpdxcLr8ssfBeICvs_ymUYeuojDKStzuActUmPYZEW7u1_3vadaAwSNWzBtodER__EIdgjsKPkZY72r7TK1JwJF6y697j678yCR0xQZdjw.w5tFHjKpOktEAeht8OTFMmPvT79OT83MQhIAwop1jT9kSl1COprV685IhBwbNFyOx62Fskd_Ci.VwdpypHtLYVCT6NPkkutO3SxtJQy7pM1DDnXZPafHIrvdQKMJrIFblYwqI9TAwAjSpAZzW46Sq33_hH3GlmVlu5kvySwXToFpZb6OD0QOgjX_bZa5O6QD0ckQ5XOkI.BATXrwVYBjmgQorVUjNOnkmwusKizP6HozkaRfep8ntoVHx3HF9POVNYR9c5dS2Aqin66UA5UaaYRFnK9gdWCq1kYZDmD6YTqtOwByLI7QTynYU1KmydId3bGGAZ8dPTALby9py_VaRikaOWMX7Sj3dT50P8tKkU_p8xxiYdrpgcDffPwlun5_4uzDlcYLXigCNwipPwnYo2Hcp0sTYl5Gq3PJrnn2fVJHSIMmiE4jyvVoLUjcIRZk_qcNBnme8nD.ltW_TvF.ASAvHy5STb.tUVcPjbrCWUTOxSYDiDtHYCcPEnACcWP38Pc32w_3lAJDkTEeqGmS_9ZAunAb95eInGh4MdnAHyrlwjovSoZs2Qjtoun.PGmqz._jsKLy2h.9ckOuZk_17FxukP1YDLXN3x9VnAUb8xxrNVRlO2U5e2EMqFskBNpyJlCT8y3qao0d5JB6Y2zZZB1Zrsmv3C7K5EUdTwgh.VxQThji8RBQVlNcg1GeMqoHPo0JMLJQln4cdAEHQhxXSrsU4SeFCY5cef7kyNNeFlQXIvlgqJ0..pZpqI3vSrnOn6nhCxPl2hZdNTEavM.t2T51LSLcZxHkS9f50cXP7bXnhnu8FEtbm8IaWnzYr6iMr3ExOacGQTLlPdBRxK0EwYqxb9HqUImb3qClhy5t3kP9cKjH1UHWPQay.ytUfuCrSTOrJ5O5tA5Qwe6iGk4cwDzQyiGjxdxQMoeAdfzErVrARg.Z4eijUvBimxSEOYyy0MS.sXzez8dnKdc6.wAYANVhmxsUcINvxAK96JF560sA3ZHTuTPkKviPz5mPQ2VKLZo6U7dpwW4dFpniMrgLZdnYN871SVY1Kx5zraJWKh7RBO0AXtA9n.9hqzDdCfYwauFpwHMQ_7QH1yTXsdOPzw2Dcei1lpRl9g4aM9QN80u60J274NKDCJPohmwmOim088xUWO6dhNBXicRvIFv47Mwx0PwCRT2Y3s5C.jQxeWa_EjHU7CWgL8XD0MLn0OzjHC6Y2iMXrHnfMURRd2HS3pXeIH1wFjMRVe1QvJ1dbmBvdqJsMCxl0ARoxHaLpFVHR_KyMu_su2U05VhGOiUGvPJVXi6mY_aX1Pg4uLRqMT.HlPKPyjyfYvG.Bh1mMrGo2U89R10i1gKj8it5p8VGBqoofsR4jAoH_LUSwpE99PpUlTvbI_d7LW.U9Q3VVHd2WVYpSC1gIsndT4cuGNMdJInXPQrSVrjYb8",mdrd: "uqGLui6XPQeWyo0mAi4tLu88TTVI9McCfoHG38ja7J4-1739200624-1.2.1.1-4Xrlmdp_wBBC8WHppvicueKqPxAPnX6xcNn9p9DoE4qsnPjgB.pCCWEJjWUqF49icXz.dXeuudyNHlA5ih6uzl3rkHvYfNHfizyjVnZJMAyEs7vsEPDwj7HkwyVViQlFYJZggKZHyTXrGJKyQhKqQTayLwkyOKQmJ0wJAZWUtfeXZZidkbkjTx4Gv4QNgxR.ZmlliuQ1n67wGLeYiHoaB_kBLmV_5zsqwFcrRAvgQhXuvSeab05LttUo82JNyzXNXRK7XzELKRv.zZRPXD_ul1iCQ_cfGCWNWg3nNLKGzUd.nAQYxJvx0Se9VJkin4FLlo_OACAqCdfnfc0wjeQtYibnQuUOYWDpc0Sv4KFYrsP.ysTiyC1WwUbPjTuo_W1dx.DQIA.Ph.rZKXL0rAhm.g1W0587Z_tA51z5RU1foN5vtPk88PvmzIyhVRaiKJz98t87PCI9kYlsPoZEUPfKVybsQqPDf_AFGEN0YH.Msc5Lp4iL2XdGInz46ZpqindKcqoWbwP8rqMyM0ZAVeBGMN_B285DnR5BO7.dQMltWlL9WFPz7JP6adyPn3451eu6dlPPXx9QbhsNSepTYCuad8TjDqfSo0J2E4WZvuLDIjZNqqTDTSNIFWhNp.I_a4su.jOhiegXwRaGFBrNZ.MGDYpUK_Rn.FmBQElMQW3QdjyHg3yTY4FbjHx0XHriOpNzORX5X3PRkLtKkuz1ymjXNaDl74FX6kouAZrZP7NHxooyEMJlXTngZjJvlD6YEojaagGalYy.uFabdeq8DHcZxN3Ftgn5QfElhxcQSU6Q1BwwTABmDBriTCcHz2UtBFlNJmwoqInTwvhdKA.xkmSgTuU4T.NwZ.KkxS9bzmNzg_J_L4OaudwAIxJJwdUDfBpfTp7ozFHIiapXo6jdAL6sH6jiXJLGC_n0lTgFgKcXzoOeOQKO30lVzedwlD.Tyr4D4YqSz2MLdmI95qZVqhmGPwuGJW6dl29kU7ZR.JE3HdpAwzwDhf0cpFzflOfJGh2TytJbRijMnZcl.Dyds9SYidiC06Lp2vJY6hQ_Htp9R8zIbM.KBWI7Svbd0AfpAON8FaaNY3wia7ow41vsu9ofBZCNlo3X2c_7RuBW2j88oyCERkAzocrpQs6JfgCfrecN8X6XLOkt1Gi184cTv0l1NVulWfbqn8F49IYUbmO8OVfShgxr0v_uyyrDnMFv057TFMYoSAbs2g_4Ce12WYEpD9zYCg5fl0TymeiOFunCqwr0Gc9ZnW9qGv7sc..yIErEa6YRMHzkH01b_bOgcPWflzA5tK3GMeIFpr9am.i9yDwNGNuJ0vZgu8ZUdQXxXFHGm.2YgKz9kYYPXXk90C.XnGBRza1Powa3kiIm8wj_6u57QrhfLivaY0qrbu9dzQZdvNV1UixSAk0sBW17ueezLJga7tEAz1mhg.f2Gb9Krza4cKz4W3.lyYMpTal64lSsuGAZF8IXvpOtVXvqjAWA.ttQK5UK5WrVU_MPIfs4mzPT3fIeDKLaZivaAT_nwf86m9tDHlsFy01kVPNFOigwwcoiFqQVPQ2ONefBi8P7UGIxcUkcJJ2hm7uT9PD63P64g4Az1TeUbaDvj0IZgzamyPSiu4ICNMmMBCnJiKuL5HF0f4.jtnMjHh38TKpLHBujoz2WhB958cnnt0Ac1vR03bJsrXbBFzwrqqk67R8XZkvH9Bhu3c2wtlXiwFzV7k85b1GfjgfDzxLPebEFvnw9ma3I0Mfa_tn3hvbfAcYsVtd5ZM5_StG1qDi3069mc.jqzf3UQs87u2rjUX4xxr2wF4DAAZJLEPCBLarrwclVw13FWQsn6pqMPYEDSm_N40Zk"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fd105d4d4582d8';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\/1420759638?__cf_chl_rt_tk=G3UcotlVu1bMqJyUC875ysbszmLCrF9nqyXk2vv03Ls-1739200624-1.0.1.1-2doj4h9EsU64Veauj13JajPD88evs1cjWdDYhsiDd20" + 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