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-afftxfzfs.mit-edu.top/post/5103269847

  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,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIzMiIgaGVpZ2h0PSIzMiIgZmlsbD0ibm9uZSI+PHBhdGggZmlsbD0iI0IyMEYwMyIgZD0iTTE2IDNhMTMgMTMgMCAxIDAgMTMgMTNBMTMuMDE1IDEzLjAxNSAwIDAgMCAxNiAzbTAgMjRhMTEgMTEgMCAxIDEgMTEtMTEgMTEuMDEgMTEuMDEgMCAwIDEtMTEgMTEiLz48cGF0aCBmaWxsPSIjQjIwRjAzIiBkPSJNMTcuMDM4IDE4LjYxNUgxNC44N0wxNC41NjMgOS41aDIuNzgzem0tMS4wODQgMS40MjdxLjY2IDAgMS4wNTcuMzg4LjQwNy4zODkuNDA3Ljk5NCAwIC41OTYtLjQwNy45ODQtLjM5Ny4zOS0xLjA1Ny4zODktLjY1IDAtMS4wNTYtLjM4OS0uMzk4LS4zODktLjM5OC0uOTg0IDAtLjU5Ny4zOTgtLjk4NS40MDYtLjM5NyAxLjA1Ni0uMzk3Ii8+PC9zdmc+);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-afftxfzfs.mit-edu.top",cType: 'managed',cRay: '90f61fcccc0b2429',cH: 'YWC.hZ0oBpOseFJ35wyMty5K5qQ4lAYLmQ40stUwFY0-1739127856-1.2.1.1-sfI9UEPxoy36DSPNG1DxxcbFRAONSIYbceTDnqR4o78_y2JWO84AOhurChXXpaY2',cUPMDTk: "\/post\/5103269847?__cf_chl_tk=gpeafjmHfeqaFtIX6gNnk4dVc.0gaMP9bcwB64cpUGY-1739127856-1.0.1.1-eWOKS.cIrD.Pg7.V9__AHdZhVoTyXe8ZwwPES7iyxcA",cFPWv: 'g',cITimeS: '1739127856',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/5103269847?__cf_chl_f_tk=gpeafjmHfeqaFtIX6gNnk4dVc.0gaMP9bcwB64cpUGY-1739127856-1.0.1.1-eWOKS.cIrD.Pg7.V9__AHdZhVoTyXe8ZwwPES7iyxcA",md: "W4894m3akxj_dUKlvZsGibizwn1NEd3SLnGLBOSCJmw-1739127856-1.2.1.1-rn7IoXQ2Y_4CE3kFVZl27xEX3aiJL3CCk7WwzX3qZBqjltm7R9sE3rFJ3tt6Ms8g_vszpvucfXMC_9MHHUMMnKFuAO3ZxoVXJwiTnU5MuVheVa.0NivR5OfphWlBYwu9kld2N2u2UpcppcysLDeaZpVhbypa6sxy7kABqUN4KQuSX0ozsIloeqJcIP4Feasa0fLI6zO.XrQMfycDqc9L.3.fNK8Ms0GtOnZaKvsaFi1i4XnBMQ55TbIiUIfHay6n0O6m6QAVYlHeIJcG9l5mVfMycCRDnF6edCA8_lsrxtX9w2Jj1o1Smwv5ky9Q5D4qITLv7s9JLb3XnzNlDMWZwJE87zk.kw6RnXuwoBtptcXovq6HN62up6poDkK6fFGsjAHAQG78CbBOYS5xjQH7XGvD8ywnC1vk91gSm1iS1U7gE874t7q3JBAunTC2urzNpeThBzFrD5_x_Xej52pYTiT12XBdVT0tVlaYtn9UbtRGmQI3RQxXgmlVis36rAxJTnMx5xudtG5V3bD8YKyxnn11dqvKwiG.GYQaM3nwDnoEhsEIAFr.hJIRa5LBnKQtvEC5Mcs2I9FQl2R3.qGGYQIQQ6j3K6PMKGFiI5T2.4OVglR4oX8Q2CX8FoEtSWAUCkscKmbKYeF5yUkiNpYJjro6C1b2DWIQtnabCk9a_sC3RDwify409mJ9bing5QJb3JerF8JZhFqEIslsPsEoZgedsVDELBxFPE3Ynsmncgusk1Q54BwbJ.L660XmRTB6bKRfmL50dRR2eYtyQ9e1vxeBjd_o3o8h8ffQk.a7GsU_6hC96om5UFLozzEyOgYzMA8rfNOEEyF63YzwBHzqbt105_ejR6v1.vHcQ.D_PtHYmDlws1h.jKzIIu6gTPpw9TUkEB3gdigSMvCgpHKWqkBTQhdp7cPhmsFNnItDYbNz2y9t1mnVgtRSf1ljqtKy..S6oAADuzQIBFC9Swe2tW2JAM6QH6N5tp7jlElEwC2r4RSokfG.DE3vWSDhmLsIwvZ3V7G3SYaaDKvujn0Wd02mfSTesh3dwpykVhz0cfDC_iGD64Bjni.yjxMgL16K9YKMCdB4eewR39wHKjb2KSBOIwBT2ll0ka9Hh_IyklqvLXY9D8Ta9CDz8Efn1rmztRSSgqUzDMYM_D3dL7QTZyxVqnkO939RYmjww9.0r1bNYt_xlYi4K1Qldfd93SyOcVZdyTd3.BAlIA_ZwuQd1_570IfqimF9IakRswKIPYa_x4gSnYTO_c3Pcntyh__sQRH3GqIrctCMyStfkAtJcCfaHYkbAjLvERwF3em5n3lonuRvCDfA0oRXIbG5B8dCn100nrMGCwYIy44tXjRGZzZAgaBTG574Bjo2GQ4sDNF001hTLNxDwuRzHQ3nap3SQ0mdBKnfNP.BSJhVoWHHFsGiWVJm9msa7jrHRfbRY4QpkiSD0QEzSRIR30kk_2rtRIyaccbxVF1HpUxij0Ln6jQ8hDVfAg.93Zkot8RqqnrZAYphjzZMOcKQPb1yYh4hBMuhlvg3reegjjV19FYvs6Tga4dqTMBU75KNOx93yhaaHDZwlJ.IZOcpV383F997HgTlID6nco8soo_YqCAKTxZuT6OEzWnmSUbiEBXZtdJhkIo0zaYYq5A23.0eNzJSoJjJo0szIPVniFuZl_0puCvbQCtBqnovCAhGvGaQzPBPcpq477OqMYTT8JKghQRhQCSXgDGIIviiz7.y8SOGPpgLEJijW4ZCxO6TyVBXEzzGlW5nYp4o2skr9aNtMm07HIm.NYJbbCvTxRrTWBFcZqvGJuxHd8F6gL5HuhDszICfiiCs7aYe4w4OvL9M3aM_9w_s8spkUkre.v90TWlYCs41wNbx4RpNCfR7DQ4huCeLgohYtYG6S8JnzgulqGXoCg8JAv.Bezfi5an5rc06SwOtOGDqKXv.XiwL25MY3ZSf9m9xFr4N0bIBQOSKL4N5OPi.pARbC0im_LsUHy3sgdkcuiKBfhd4GRN34BQwEg5Zg.QLJZWSgGpjdej7Q7rvhUv_l7ZQejEjH4S1OIVQqPKpvQSD8UdrKm0BtPzN5WcJzuliV.PiVy0VQF24syTfUqAqWJdiH85nJLIyRtuWYATpWGJuBuyL7Ign4ilmLDj721YhunJvHJL.AofTQFqYvhNIZOz_fZvxdNdWE.ft6KHrY6ZBL55exARVDtq7v_a_ippTT8wFBqGfrJEHnChg",mdrd: "QsV8pge0Pb21Hdps4C06gUhVu.UFDj2OsvrJJ4ocPnU-1739127856-1.2.1.1-WB2pJwVCGuU1n6k_G98qPGAur9hhAEeoHolzgDUBwBsyPpXkqfTtNZfDphawuiPQgVbyKeIxqrb6gyMPMZ9Z2QqRhxXtur0xLVCtXc_dYbcf_q1F_usEL7A2286Q3ykacDrn0x_J309vHxOKWzRdLP2zC6SaBf6Lo0yBJwhZlxWZ6N.pJYMxO2zvDbzpW2JYN55m7yCFXQtXoGu8Ov34c34jkGjdTFmUJHLKRyyCP57XCMCt.CdYCJy1ZZfg.ySfv16KgsbQ.HjSKYYh.U.A0JFzM8X5oEFhhMb1vqlKYBGOB0XVGP5FgxwWR50mNaIalDgPRCNuymF.YweCpWY0Rgr2ORL3heDUuEVtWRPYgorTbybxWQc7hUf57Ro_MQJofJuTbuAN0wtyxnr0m6CMabDjUbHVWM32QaE.TT158pvKAHD..oS4fF.z7ENR.sX.r51TGF.jCNACTQnWlkhYB8Zo_.k9v7.8HIgqmbrozF00t7v.Ot1eRbWzvJf5cpvYnxT8qUAbNgnsbxwmpSPULhkILEm_Gt4nrdxj5PTOQXrYhvwhZcKYCrPMWvjo_RrpBfqY4MfYet8uEMaMg1_hNeWqqUbKaolibj5RCWOSAmkvX6hEks6Zj7spCW8PLJc7yIk3Jp9aDJ_GLc0HsGmOdsz_vk4KpHTGznx39A2D4duhlqIon1QuM.TNO2jReGPTxPASfwK5CEM8FQmPhLsJZhcKaITQYVvTAGXS5be3gEDySsY1k50YXah7Rh0tQxU4P.heKLauk0gIZHeh3dNxd3DmDvOmLntRFVobxwHgxbbirGI_L8A9mppncIUz.DNgkcILBV8BLSEaS1LmSsi5OZfCMe5ji_GdMisiPFyqy8l_nozoxBaOj.PpQ_kA266yMvgdGF9s9O5nUsDD5UA7sDiYunqT54JbbEXmpIqYOpliX7LNW1W8N.YUOqkWLlWtZJ8ovXGYNFR23VwfP8H.3eiUyQ8KlfAXzDk83IPwveJsl6eqVLvvGtHiwtqVqpSc.d9RHcJeoC5ugKvr_B9aqPhrEi5he7N91UUxUs4vK17BHa2iXA6xV9OnxiNH1RLt004.coP.b8eqkkTEk0iA3y3mnnKrE_70cpBr9rinMfqkMeKmJhJa_QHRzQmSs1o20tnFTZ69MBumicW7X1Cdz544FkNr3k0z_dqmH26jLAt6w51VWfBHhHB7FtTuQzsdPhRIC9idYqNJrnPBcl_yQOITbXPdUpY4u_.PIMfA1yOgPg834d9enC1kiYK_eZlPIopsNF1gZWzaqGMF7wjk9q2MllGXqJFF587nFTMVSPSWRleRZ1vz2XHc9Uen81J_JIzkW1aBRzFLn1hfmxOAhZdFFXbID9JCezeyFmWeNjkTNDUrIj2PYylVgh7BwDdKwrnStTDUOJlxzQoYC8WFSm61M2.7zhgD8SAYqKGPgKD4uKY3M2DjB8l2XErt8vSN4_tktL9lekdmsUZ2KaDV0CBHWoXSnRmdirux2pQY_32tRFd2EVni0zGR9h1Iyo9s2zckvw.Tm7Tbr4ylfFMuFOjUMLgv2z.cyOgdf1L6H09CDV4qvzAvoUv2VOZYvluUMgMbQcC__yqQvQDvaxWna7W09pBN5yZ0kpRRMIhstA0Luo15SG3ugczM.10HytYXssNpXCixGIEZooDCwjqkXm_HKpi2k7awMJNn9aDkIplJ_UDvXFvJic6XZuBZO_vMn0QEiQSgM3vgcON4kAKLuqfVKiEdT7ac9lLKXGK5tPVBJTnFTejqp.POKRC54P4x.CFw8Nlb.mQlwx8WKEw2yTerCnBM6gRGq_9xaSaFryY"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f61fcccc0b2429';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\/5103269847?__cf_chl_rt_tk=gpeafjmHfeqaFtIX6gNnk4dVc.0gaMP9bcwB64cpUGY-1739127856-1.0.1.1-eWOKS.cIrD.Pg7.V9__AHdZhVoTyXe8ZwwPES7iyxcA" + 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