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-aff25v5j5.mit-edu.top/post/6841735920

  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-aff25v5j5.mit-edu.top",cType: 'managed',cRay: '90f7e6f6cecbd678',cH: 'XJw9E23RVoiE2anH8sb21fskeTTRChHOR25gWlvDplc-1739146499-1.2.1.1-wGWep.v97g2_M3nyo_kY4SrQazRbRNv6ssaBAZ20Escy7GTDf6oSehRD0yhFzire',cUPMDTk: "\/post\/6841735920?__cf_chl_tk=GnzFclgjXd1B_zSwXL.wDVn0L2dQzMOtNreIGXL9PL8-1739146499-1.0.1.1-3IbUktu_TxEkLSv5Qkn1st9UMCnxN1LvRIoa4ELMKww",cFPWv: 'g',cITimeS: '1739146499',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/6841735920?__cf_chl_f_tk=GnzFclgjXd1B_zSwXL.wDVn0L2dQzMOtNreIGXL9PL8-1739146499-1.0.1.1-3IbUktu_TxEkLSv5Qkn1st9UMCnxN1LvRIoa4ELMKww",md: "PPh4E5GQul4n4Q9EO9DNpfjr5RHtfYjFCOWQPVmtS7s-1739146499-1.2.1.1-I7i83XkQI95udjPjDYjaqz5XlljLPU8hNcYADNzf4j50h5iT0X35wJ38dZqqnni9oputxgGqv02mbBOlNvnZysHgJ4saS9fAlTO4LYZiybEepwralZpdFzc5UJAJBKS.J9HI_KeBrkkPSX34kRV8dHRsNid_VxWgdprPRM1sktekPz8itsxCnOVT8szpgyJxAQ.LdnnLON1l76YZtZsVXFWYElEDrodaRX1YcH0XkZhQYMR7Iyqf.pr7R_NRu6RNYECDIdhrCYvQqVRHkU1Tj4i_HH3j8pi1_f2OFDrreQrMnyGVvlWEtfPj7lv.4osfpNrQpOeK59.h9J_IuCkC8FsleZbMCTzERruH7wrbqjfirTpTb8Sxu2xm2E.cyqJSE4nedZtt4YctAZkkFNiGKWUxlkHRVuKPyailU7QI3TzmA7RF9bxRp.fqaYLq9CnS6efdpE9i3ATCvAgSkxg6ALKbIbpwtqMr3hYSYdBv1QnWSvpQ7yYGvN3f5vWDiWCT0mY8QGaC4_Q098UVw8sVMuycty_ndxRuenizcDxNb1xcdz3Y7YseUktdBkB3D2zZE7NlOQM0OXh3AfuOyIperfHmIbGApsB4YzshHtsRhh2rCMXpw3kIpUuiLzHI09_jP.itAchUQTkbkQOVrBuXLIP7M0Tn9HjRQ5bpuiX7Nq1oNKrtJoCYIVXOVWFLQmmKqr16oHOsBv_9pM6y9rWQbN5h9n.N6quaddm0MhrTJwadknOnHHM9BP4SROG01yh2kn0dzGD38MwVEnT6ufjj2pRc5vTtQE.6djVBoJEOsu7AMRIMK1pxoYLSAg1VDIXVhis71MTJzahHOjtS3jUpQD66pv8.0UpKEbZuh92Gk_gmvQ99tMCkuWsOi5rbXP2oSkKrkdV7pW4TXtxCiVByxHgVX5js8XpZJ28mCirxPi9CFm1LTxZu5xruBwHyhkf.s4EdSz6mixLoD0xYk7FC.cbSkGyZSyZUvFlYWibA7WtFZknhGwTpRIpSeXJ1Y0J7XdaDFlJtiL3kR.mda.Di0zj9LDwfDeYfT3IRofLpoEi_K16SFofMgZhaFCp2l6SXRWGAF2auSZjxSgyzf4Z9Gl50AFvt8tmai9FTCz.sXUMrYwvuQiqhoAlvLYqoObSlG9WEsZOfle74Jc2ghTkYz7P_8Besd_UFo1vz1sndDtrP9P3Tgq6edKZPQ_qvqNr4K.0.qLVoLK90bmJtFJULdLhxC.ZugcSA2JSZ6Yrb5RiaMpCiI.nJ_4cT9K1dyk_bwcHRJrWaCl_S2PBCMap.6zdJ3aGsxwXjX2vHjAZt30aWvCZFEK3EpGXoLn6zoklpU3qU3NgOG20NmKLdCfMIyROcS4XCOMfhpvMBZ3dh3PPr4FvOER4UnLwwUwYL2v8yP7JoET0IzD8uTEBAn7qHjk.qZpdCoz1tKfWvC_H06wNDkE9oA7mwzgGQcvbpJwc41w7n7sfdswDyWl7S.UOuOAbZy1EbXQ2PDWWv6b7lshKnha.XpmPnVbi7pnQRxFg3zBUv3.Vbix58PKcEsU9.hCEaRJ.MSMf8NOERiKYvbKLCui7b.ZR2khEnK2IlxDyF_KNc0QFdLQPAP5Y4eJEPQusF.bcGtFHfsgGbT78yGNY4fhpEtba_YDUE5avbGrC8oR2UUoZbMBaayBOfxk213fwR1w5xcQZyNMHfXk2cRhfk71mekdMG5BuPoVsC.MQ1SUybiijd.3a7dDoJgt42W_sXoWyJILXywGZcm4ZwNVZYWf8SZN142IuDuGAhVSorNSfTwnv4dkN8y5Jhtgmj4Ai0H6Syos9pTOZCeejn4tKs5SoggnpTnjLSZ2PF_Qlt9TH2vde1y1NJpBLj8YcXLnu1si4h0cNsUt7fq0foe718q2Jc2m_HauwY0XO0kkx_ZBKcaK271HM.7kHIBhO6dQOBZIX9bvqlhQC1B3DL2tyGJlN.iaCKYyuPImVnRxwGWmwGhBf3k2k7GRAubbhnhnrxerFid1kcJVPiwRR6QICE98ay.zdFJDH7qnrQ2Hv_01vOoUEezOKAF4qifgWt.CT4aKOzBtvOqCnPxoLOJspVkZwQU15V4BdIzaVgISSbUJ8qrfWRU5XYPK0AcWS6oCXmZ8sAbFRfZ6OThvvTHqb71NFGFubezNvcetDRDl0kjWbVSHzNCxB.rRxiuDssXU2PtY9qNjHffXdJowYfOnNliiGKTFlT9pssX15bh_lU",mdrd: "c.68071f3YUCrGhzLPvy7pUv3DLNooKKcbkrXOPp_Jw-1739146499-1.2.1.1-PYJo0Gpi0O1sbJbjwHdHmjAXgtpd8qGWvfeShrVJhZJprovE0Bg_V1.nRr7Yj9Lgo0EohA8mH4mmciNbXZFFytH3u0cwyVSicIw5yPqQqDl2mn4tUIkWKFPJWThKk7iBapWfKjWmgDuTo9ApoiQDGwysZONPAIKcERyGiu3BwFadCHQwNRqnqROKguPN6DFJtWdK0OcVhs54aRVyjGVw8TBHW9gV0GuEi0JyTYaYnRk5WPbjiGaoERmgYA0jEfh3vpHK8_mOvI9sMmNRjMtjuH4.XfoN2JrSahLjVkm5QEJplOuv_KRDNQ7BGJshMXrTdKhDK3oHz4pZ2LamTmBX1XghkFJY0zuno470wz3YrBtCaoNVCX8aCefR3LtsswP_p2wjkjsh8wNAlhMl95dVuacMn6O8Fk1uKVP8xEw.yh2QpUO2inui7Dv2oTP.htsaO.xownYcbb9BuBltj3h3HX7Ik_s0_9y1Smw0meQjmkULVGbhvT0.JtVfLVYR7J8p7Tl9wgcq_4zLBzUaV8s5.tvhFfjGtYVLjsEhYOVxSgXZ3SzhmrqnlzbOng1paAswW4tCveYobN7So7mb5Q1ykR9WLG2hc4fFM7o0TapAzKC.gBZB8v_XmYmSC5P.HecRpKJ0a8xgWhP39YS_27kaDP50NOsbGdml.pXXuKFPafMo5HEj2Kb2MmcYwaID5dsY_aWWx0kKSJLrSY.9u1WFK.2.DuO9my5VzdLZqMMbhzH2m9j_lWwclqzv2872iREH848OB4syoYNe1tXUAGwlEjahyEbJyWlJq.uDoUKlVZmOXniTPrVOWt8g.It.bgUN_34M31GLTUG042MRf8LlOOHzL2vFkjVfV2qiZSnwwplRcFgF3sKMdtIhcdORmdbWWFDTb.b2RaSuZEH8wBZk0qktJs8d2D7jv4fgKArF5cogz0vBXJW_OqQPeluAba5KR.jLVCQsucCPS1HLztJMoJz4rx6z1pFK09ShwEEVLDQEeeUOVHqCTBOGGS_bZu54ouQvfL4uN4KEH0WFLYkvBy8BtThn5fZ9JYzLDVlUvoSXFz7O9bPaAH6T1mZGdUbgb6I7BYDQGu9yHJYcWkI8HvacPABkSyWYUGtzct8QnJ9IWOxK4Yn2p2gijGz8xQpB.zRxN7xu86amR15JZ8_A2TNEVo5ruVBMSRQH2Fq_9OLpxlYxu4mBUhwGRJzaKdIq5o5XWiZZwho1WLoUlllCp1pOxqcpgKKfqg8QobZF7sqAxXUb1WpDP7dlhBObdpeNYT_v7snsNUJvLsZnaWQ0.9TCIxdP9Bq1UcjC7_Ifql16KpyVPyHzXnSs5Mu9VvdavIIoHMlNriFDQzKu5MZyp5lXPewZGpSqsi.vyl_2PVV_lat.7DF2UQ25yfoTPJIrPTiLwwtPyMWDNq2g4ViFcdzDBA0IlTAYJHBUB.rRGmORUIm.oEg9jBARUCM5l4667M5jLAOyCYszb8B8HqbLVXfOW_oRmK_gh2_cDBqwyYYh._78NApogrKsDyXNfrDS6vdzYFICYtt49hvZWV0m9TPNR0YSRXD3.BsGGR3XpWrZN._olt3Adjr0y.P7KYTF9muheivcqepm88EYAWlfcOELhOWTukv4esW.rolJQqxLq.2.u538NckfFUDFG8qKyBUoDZyelHTpQCOOGAJG0Sn7eU9fl7RVTq1.ui.AONr1sdfgyz12J4QO6AjVCxEy_fVs3bm_jTPbIT8LYZTGGPx7yJ3ryVgw5Cyqnr0XcqWG9hLm5bnp5ACiRpqOW2rm5.QZd8.LM9iRVvD4vEI57HKE30k55Qjk0SEl12ugeac"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f7e6f6cecbd678';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\/6841735920?__cf_chl_rt_tk=GnzFclgjXd1B_zSwXL.wDVn0L2dQzMOtNreIGXL9PL8-1739146499-1.0.1.1-3IbUktu_TxEkLSv5Qkn1st9UMCnxN1LvRIoa4ELMKww" + 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