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-afff3dcps.mit-edu.top/post/0496582317

  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-afff3dcps.mit-edu.top",cType: 'managed',cRay: '911055645a3d72ed',cH: 'UjxuIRlImbqwq4klMrv8TQFTa0xoBYKpFH_poJwR02s-1739402681-1.2.1.1-ZvThN9pa3BgKXvDSlTGDue.1URC14GndOlocf6zlT6VZTzo2Sx.1Xmc0fHKl_Fi.',cUPMDTk: "\/post\/0496582317?__cf_chl_tk=u4mR3ke__Po.eg3pMx.AtvU1gVBrUhe0faofKmL3zzE-1739402681-1.0.1.1-x.DAMwzci90.rkWZVzfTwnQfamyD8aZ9y3eTJwxUtAc",cFPWv: 'b',cITimeS: '1739402681',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/0496582317?__cf_chl_f_tk=u4mR3ke__Po.eg3pMx.AtvU1gVBrUhe0faofKmL3zzE-1739402681-1.0.1.1-x.DAMwzci90.rkWZVzfTwnQfamyD8aZ9y3eTJwxUtAc",md: "W8cSB79f1V_L6F7Dj071WZheb9iATLXN7j2pUwlnShU-1739402681-1.2.1.1-vG2aXqGpa6EdLHiY.5gpjzl0eOlrgQI1Py6LaZyzR_C_QyhjX99me9ra2k7RmqoK05XVfdbB_XDVueLq0k3mUCBTU16uP8ul.zcFrq_GM0RCcVQtsmYebSwkxewxZtkfzB77eP8h8smlVrBGeg3ffGsRXtJw4exLIOpOeKH3jcfKF6X8DJDG5riyYJxpJYL4pBZw55.UdPtIHieLTUpwQs56LDocYT7bMmvHJNfw1dWBdjimY0YMspmylH3ZVY4_lE4CBsUf4iqUBAuX6Js5UzJ6SgSYuVEC2MjYZVaW5sXYqGVnJof8qSwMSf0fEPZGtk04iTjgNPiWrmcW.f4ebp8cQ1BqbshSHNEks3gZuoUbNDPY61apLqTUOiHdJu4MSg4An_U9_eAc2AF5LIRPHTk_ANr0Y9ZFOjFNhke.5hD7R_ZdPJBhegGG4S8sG1_wu.V.zg19MvuqLLf8KbdTBQSdw0.RRkTlkBo2GwzI3DmkJJ6rTwNEJTZqbswc3jzzDaIK0f22CpfSMXNDcpuz1RfDX.Ibdn4QWKTNw0tFo4R4aYGJ1AxvW2hRjbJ5u8lODfpR8xWHLhuDCrf2YGTGi7b0zeA92s3EY.6qJpCdD.OG5XWrnkjtlXQKc8f6FKiuvK8XamvM1byISEeI_EYbkysn_WEnEgGCPxTcSljFJBVwjCHDkJR31ukk5kzt2RhGnO9kWJrhihB.BHLUj41Hl7VF_CWOraIUbm5FoVnkOJfPq02DSfNzMtJFbCKVDz8ky198mErgaTG9jIGfryk0YhT6E.L6HA5DqI0cYT.jctygt74fctEDEjyD.WBc57NDzAOT8kqBBY07dTuAteO3jw5JXrn8ZmA77WlvbcW5SpRhbZJy9GFVuIridYnbP9ufZsDxaLerd_qRybuxdz.RSzhDKQ59K4WzFaCcif5vo9qtYhcW5xf8vuajvEHBCNUc.7UdHhmmXKhTXCSkvQTZK9FhjPIFO5l_Eroj4g0EFZFhwJPuCy._I95sP6raRs5kO4EL.7UbQK2YrhntWlfG5LkQzYnIE7TdpAAw4PNNsLi8i4wZaZr7aiA5Ddwg.1TPubX7O1udadOtKAng8o_ITnp9asNKy0w6YB9OI3qFj2OGvtiQaJ5s7o0lCXMblwJJSuPWF5Bl8k2G1AiiCSBy3G3dugFyltuVWTJ8Z6aJTl8RpUFDM3n1kZV86PgkLnHZS.C4V.XMSkO9heS3Sqf1ht2Dd27rbW8xS5M6Iy.NTIf9Tx4ou_8sTrIzsO_YsjiQxObumoWFFtllHqrEiv8v5o0c4EuAU2aMAbM099CQI.VehmNIkQzJhYYPR1Riphb5D1DUJNzI9z4NUhBKhaQwKQVz8gSeLfV9UyqKl3vgvQzXw32JXRFw3gNtLq9K9JuZkhacu9Alvjt6BZhycORx4nH1mVRfJ.GbCfKTdCB.0u8WeWOQIItdpLqCCCK1sUa6oe6MFL8TwHYCDlpGmGR2DDiwXjJJKMUPA5GbUw6ATaEnQl8.MfXvT57Pumu7To7VOgqp6iTp8vixK9KRBCj3KnyVwhkb5gP7QIzwbwHmyuPxW0XqHnj2EAT0XQHNiZob6mK2l1l_rbqMynfczIZuk7.DTIU..0XIm3RH2S.AS6KHs6E00k68Ozf854OZtcAe.M_qj.Ly.27D4UckE8P4yhH5LP2KayVU1xZ8CF7CFEgktW0NK9_BiPp9k7qScCaBbE7cHa.of5osq.g3aL91O_2n8J_4X78KdJndvRtMYRuIomM0hikgYv8ZeXNMJyQX8q6LrjQogc3TLxSA39LVSp_I_hOj9aoq77UpEWTHyk0g11QZqlXwf9EKQnKSgE2_fZitu_UWQ41bIHIh0HTJ70ajCAt.JnY6HpPLGhVY0iZq6FZVghd1peUrdJfMV1KCFPYJ1cMarH9Vx7kcaQoeqf6o7zaHOkktfPno_J4yFpPWPt0rUk8W.f9IEDrqohM.fxTgujNnICvOloF79aBjhZW9bpUzmskHTglgG4T_SuIeSq.7vfsZknl3a4Kcj.Ny4EBB.Cu6u5v_AIJ5izHbBNq08rZZndlHaAM_o5ERWYrs9.16_OTZcn8DZfaTfJ6MLPSwbRQBELVMl1lsX.ElQa2oBdye3b2HGAT3LvUJzz_02OxeNbS7LBZHEqpE5Uk3smc2bmwNF_KovfyDzcOwBAmQE2FjRP7WoE_X5CvXi1Bpey7oxPIzGRvPnmh.NjaF",mdrd: "u2emcTSI4ldVlNt6BURt1tdJ2utU8Fq3bWGUGbQHRMY-1739402681-1.2.1.1-bSBL4cWE8RY3XtofeBpsmN5O5Kl2ELA4NdpEwMoE4_h0H16bIEOEtuL3KcthFImWwbLieGQdXxqwJn.peVkUW8X_8FsKXO2WrwdKLJVhLmKEg9EnvkGiLzkuiRJlHMKagB5Tp1K.zuwvrkyDncIypNGmUyCN4SGd3nQ0X7eMEVNnYhQxDO6069WXJbqn4yGgPFMkmFDc2FVHEt8mOckN6Ou1aOiELXx_IA8XrW7AtoiXIsfJ26Rvfm0OsE4_ylO.lTRkAkD6PL8sIfzy0Lbk5VIFMW7.JmO7XIApynwiVT2UGxF9NEXfcrmT707.fcZh1F6z7SoxK4RZjFWWaV2lH3IL18kQSvin5hFFYvURxTAP03O89uOS8eb98FiJF2E_XonKrUR73As1SRZFLMunZQc0WhnkP3ZhcmXzVJVGuH.gQLrOCMZyH2V4Kxs3hhjkhqgOtTN4RlV_kpVxssmTxUEmFPlYEc5v9mQ.lrWS97ohT2ZY0GW_mVypjsRjNBTuenNmtyIntC0G_hMcEKOyBZPWU4fyPzCNfLK.e.UzrnrZ8aD6ByFaBj9p1m7IPiiIATKliDAUC.joJfbuarvxeP8DAA7e7fCOO37UxG2GtEb1MypOAoXpCjoWxXb8.KaS0z.H6UalhZiT3bHIAzT0_hTUkWmLL3IEIkhqJu1x1exJvz73FyFGWobhdpt_VlY7.UMCcAmIuPK7sffA.izhrhZjrJRpLfebmmUTzSXBniPjpbXrooPOWfeO4r8xDEUNIJRq3Zzy3V_bKmItYTqOapDAxIe0Zz_KSwxzoSLxiKTf0iT034y7HIduXeSuLTi.ZfSZqB0cRufffX5ZfXgPRYxdqUaFRB241CZCskxAXGqiOvj9WoDoq9ZmEVrk.lu9_wO9rytSQ8TbEGEuSWIeyy93D8TsLZ4zbKlaArYnxoiiVPzwPGWh4tnUAXAdcrSbwh95fZIFB7N07UjQlRv0hel_szhzlo5iTECzcqwqxmsEboWA4NG1yboQltEstc7jfmLt5PYnLYiJjZIqP3j7EjBrl5C8Qo0VN6Vsk_Yhg.JReT.soxclR8SxsWTOgyGZka0gPl66UHSNUOsgqnQw9h6khSULVOE1FFMw1xVj7YsUhSwn6B30CpTEneWWFs3VWdIhYCc8UIbSPVLL1ZlSoBoOWSgr3PnD69vNJtD9UOryN6xpTeqmryldXiJPfvjD3aHIX_3XMVrZcJ4YGCh7gnP4KzFDNWC8uFareU8AIKM9uWGH3V_TAjw0WLQgImNKFlphIk3LkjhOZdljDfbEru.cmYzXYIl6ZeUXi1xyWictGRTc0G6Dnh3IF9LHjsxJqv1byml.vHig8P3PHg3trLBx7OLXHHkL0DlMDh8Eo2fumVEo2zUJOxFidgjUN6K9nW7wFS7wRGEN_iuHLjGh6.OFj_BuD2FoIOXoHoQvhi8VX4BrAz_RR9MGMQlqa0uV1fHTWMFCQF7nDDCEXDsrCsN7TAw2TfSHWaI1BiSvR9M1GMXNbdpwmRQKTUNfF.MDDTsHG6yV56lQ0M9VPLVkT7PJWRU4z3L5VCEawLVxNaMraUAMZExCj3_CqDqYiHNx7tZU53D8IzQhkqIqSZRQfc3382g1Ns4hG2uqB2Gcg8DzifDhJdqizdOk7UqeGbzlmSVtD8OeaHnl.N8iuXnmkDtK2zfc3.zfoxVCiK4DLeWL0S8ysgNT.DJ2aCXawQxzWrvsOhq9aftJDnSGeuZEr4iG.kUW8Ogy4U.dgAUISf2auKkSG00aO0Rhc8pFHu_8Y67kqw7YEqvNzicFtW4YqQ"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=911055645a3d72ed';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\/0496582317?__cf_chl_rt_tk=u4mR3ke__Po.eg3pMx.AtvU1gVBrUhe0faofKmL3zzE-1739402681-1.0.1.1-x.DAMwzci90.rkWZVzfTwnQfamyD8aZ9y3eTJwxUtAc" + 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