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-affnx1nyf.mit-edu.top/post/4680239157

  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-affnx1nyf.mit-edu.top",cType: 'managed',cRay: '90f3b0b30a2def62',cH: 'HleyxolzL74TIhllHTn521pSCkOW27BjoPL8PLbMD.U-1739102333-1.2.1.1-v78xMSFSPp2W4EZFqVIxWkwE68k5xTe9ASeg2uf4o21zfTSOIogdkck7zyiOUQK4',cUPMDTk: "\/post\/4680239157?__cf_chl_tk=ZFy4HjTSgi8Sb6_7CHEp02Ol7V2a.GDwuS_OP..iKrA-1739102333-1.0.1.1-njtI5685v0LtWlPpqWvgl1w3llXp4JYOKSTPfY1DSuk",cFPWv: 'g',cITimeS: '1739102333',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/4680239157?__cf_chl_f_tk=ZFy4HjTSgi8Sb6_7CHEp02Ol7V2a.GDwuS_OP..iKrA-1739102333-1.0.1.1-njtI5685v0LtWlPpqWvgl1w3llXp4JYOKSTPfY1DSuk",md: "izjsJWOiNgfiIOOmtiyDmecJbrxQl5b1K99711nS1kg-1739102333-1.2.1.1-gkNF65xOk8vKSyjQwsTqcAZufJme8ThqSeyyvux2RJyWi7KWwjLO.SpU_06g4FIo1bzLARIT_7pLPEZ2EPU7CYEPgp4mvgLfjg0aAOIIMKEPV4RBRRu57k9WQ2k0RfLYyx4ca.WnAU7.X3ZS6XwJkl3ZeeN3o5v5xvl3M2OQHk8.7vMqi7ZeKzdnIHl8gxJ5uB4bjmHWPEtMRwjZCLpGNK__5mqs8bid1w66sIxgtrct34.DPuF.HB5cB3iSfvmqjKfSVN5yHLPf7t8jeK5uDNECfFRCq7fwLMRdc25wYl7FBi_TfGwjAulMjmbRqGTPaPqMjLaWFCyA9gqX9m_o0aQ1jpJtvcCNAmcGUwAb3nqAgv2NnfjTziLVMpEoXzgMvWFWlq7Moql0hDvdA96vCGH5t8jzQzpRZJ6E.5khnJ0iW7mJmDfsMlTlipkKhfBEj_2gC3n8ZTrXpVZiNC0OaHUfd__X0QM80Az1TccnNVeoXCtl862oTyWl4Ot0liirDFQIsDhaGDEjt_qudq0JnL3bgniJ07ZKCh00vARpsfaPtsT6N7BLOftQAuLReEYRSXFRgdgCSomNXWhaeyIFiuBtnXtDK_bv5XiE2v5LXnoBr7rQVMuBuVBxDvTiBlt1nvdonsM08U9CYqAKYISptmqyxpNoyIwCTAuV9_AozGl1.S8N.cHfLhOToCQHO1qgPW8Mpui7NUSSCe6wzZuYyzXdSlwNiJGFX9JuVWyIpbf3zdTCSZ6fnSdXR.o4oiReJAI6HfxV29lEqvMLhqdZPNFhD.Mz9iLehkG1sD60bqFcjmcyJS.ecygvnLsaPg3iaoadAqXR54vpSpov8DRLLnnmz6cMNWc0gLQttlkNFfk9PzPylQgVA87INaLewVTyhwV4SSMOuaSp0DQR00lJjSS5HrkfzLXB1dNubkeTmF4nWiue0bBgPaXG4bYPqf9YoHdtO9LobvgI3Koqa9PYB8bTc4d.PobndAkpci35YNPRF1debXxZbQ2MfnjJvhJgUUgcu1BFVTtKItA_iSkc5llKpOh_F1_JKs6afmOZLL2HxGAkaTO0G07t31h3FhmWKyKaFnhTm1m2ai7EAWWD42YdTF2gXHGBtMLgBUPuhdWaj7_hxfxewyXut.dgjOV.atprYnxJmEre1vc282K0CR2SExzyCbxDY35chY0MWfRRAoeeCxdFG6cvvSrvVLFSm.XrzqH4m_BR7RNKLeYvC8qqtDPdwoq3dPMCq0s9.UzFYxMZ7wSPngkT44h.p8Zw4QCNM5WVXJAyWLvc60kdVweXKhHsTHMqoCM2Vrlfjw52zc8zczJBYLl5kTDA2Y6wfTsR9E7ARID6rHdxPl841qSg0s44jRoHxxuX1_OEEnfrkaA2xJZXoW7xWkKKWOIIrFFj.NgPU5jyQw8ZZvMVMce8BcPfIenw4Z3VdxkPgibdsoJyS4DV3b20s_3KD4CkgzWQqx4E2ixMDtvin.ejig2osdt4DCtCe1yzRyItA6sVpuqFJ42wJs1xvicgD5KXDNuVYHXC7e1FcrdkPKGjKI7tuARSKoCmFG2LV9PiItUGXKt2MKTEz2bQbmSvmVEywV0jnARBmcdvRQh0eDS6ZCULtap.Y570YSJo7BwkyFXfmzm75y_CmIrO4dj_mcMGPHrP5sVnzoCm_miNqMcMMDZJrH7QJax_IrilZfKWEfM.NjWdXv5aTUM8xFQvVdBRWey3tmr.hse3C29vaQBdRyrL0xUtNamrvG1HrrNZLPdW86Wp1w52.vCiF9iSuEeNJa_4WkOgj3qPOldtCW3nrKDQS9l04hRRyZmvyHndEkKDXxpCr6vvqy_POD8Yq_w1Er_XbXSnQV14cYxwPHH7E8rtrj4byZ.GzOIOKsLhoB7eKh3_14.SbtvTFvvuPDm_3C78gkOCfv9uO9fGro0Z9vpxH6WYzyTU1CHOTWTNHO_GIIGrvYoWMvVc2ThMoXjG.QLVnxzTEJR2zVHFLQgBKa4CHJOUI6KQIO4JHWFwEAg6yVUJE9vuMI5oIFgQQspacBORTLt1W5G1jc0_b.BdusNnElBxumNT8D3m_1FaIJ2NB8CBnWdQWE8hnHzdD035m1hT7WQ90ilLP.YqwcXWyaCSuLj0Gla9dCZlgAkgxu.wSUNXN0SyuvcHkknOEChodI5faaijdPj3w4_J5Rw3CFvqZejJdRuJ51QerIoIS7eS6vwYCeWMWnY7F6qKTRYr",mdrd: "ZrJaY5E3xkVwakeBE3c3J0yK4kD_hI58KBGicAwhYf8-1739102333-1.2.1.1-iYSfMgZi5A1mhN0rHx9q6TaLsXe6toXWPlNItGnagDnlUUT9dVfy_EUHb9QbeOYFqXfdt07SsrakYNhz1XlXyOB3aJ6ih5ZGKsPRiUIqDKOltCFVzrPQk36LMpXSz8AJhqvHcivbg8G5WZW09Kl8YdRyK8eCZkv0weHo7cn4KEXO7ZBKwskwD70vjw95zz2YA6mIgxGrlUJtj.Sy62mDp4bP7KhWP.rQuixb8ZTFSa6xngNvM0JM_Lcx7l8mYy6VM1qKq7YpOkRK4Ehv7kDI.T0c1IQX456A0cSZ6782HVPnFCjZZrc5mYEjUJJoo4iSh0EGqadOL.7fjfB0sL4H3D1RfyfRRRqgofILvLqO5M0AGLysDMZVTPyD0liM.LTPsMCzvhrZlC.mpen5W_PtTO_GT2Z0canwgJX1ecUFGR5.QTH_H7j0eyP4wpy4tZBpgrgesUB_EmAOIh_9aNGGwn8evq43.3JkZjePpJrIWibsGDD0VNNr0D9CRR.lSAa6ZN.XaIFqkXVBYiTmTw.KhA0fAES0KzcrT_4NWh6tFaW_DKEiB2oYxUJiRFx9gMT3CE8H77PdufXfcwlmVY8PF.UEn2xMCaAemGT3Dai8jtk0kwc3UkObjdRPEv7G5w3E_WkNAgl99aLY6b.rGxcsc7ZKGPGCFt.5d5lZrmDtRZFHebZh3C6UI97VTCa8bGMkjF6xeMfvB6I16PcqaR_1rAWzayH1F4zX.QklpZV1VcAzcok0VqP8yBfWco7_DON.4xqLnI2H00ryfIoQW4lPXJgoZxHJ.jngi263m2jV1a4o.jXCV_fmkJYfHzMOvJWHlS9Av3ttVPavk8ytTDhxYGO3DAVepMVblsyJw9u7pQZLZMx9jrzmcE8sO3N13ThiSjF4keQmSCR3164VCNA3sQigK6Btv5A.vXbJZ0R72X9Ig98cFbaM3jLmC_oAQFpp5_9ew54gX.8RDKCPdjfymkZK24LqSWr7HKVJi0H6MKvv9S846dtz20.aVdQUpjSfkTOBpjlIRA.9wI0MROMmQAtZXbo0vcyJGWQ8fNZpwF3VPqw.Mh41Pe9oAexleizzjPDqsVVCyQHMKfz_PjY5NE.XChVR359Zc3STdwRCs7XxS4lwuxEvATWHGgnfDND5Z.mi85MEMowoIznR92tSGVQxxudux300Ch_AZttw.7_iy_JyFxPWoCfEAB05wBF_RGqUOTaCHLmM16bsxZxj86kk9h8J8AyEWhibN_GhRF2C74jBdeTPF2A5Ls2n2CTdeObSy5k608dlwnO4kPCkJZ3IlP.ITHbIrUTMOpi_jh0K_arJDZHnQ80xR5.W2Q8t1o4U1Qdo3rveeRJf3peYM0OPzkhMAvHfVsFpTngqTOfYIpGUTPAuX_oCZD0ZY5Uhh5_mYskOSVvWH7WNzFjFNutxWyx.oVB1WatoY1xZB0XZrBjiUdYKaF7STum0jUHDMyAvaVsvMfPg_qWQQ_6uS0NajSMk9AsSjz27DQhfxHx25ZHe_qP4ksor.jvmP19U3GcNV7WVzK1AyqYWzzPalxwgmCxwDg7_PHTlH.YfpP6KZ6csfKudpwjc.05gZ6CKayRZCg7773EKEKYzoVscFINZVG96uZK1xMGEmuZ4ota_b5fUO8BuaKZ8wt1XL.PqYTHTe_To0aV.p1vgQRWoiizL_iqVTrytmyPi0TVTBllZO23uIXcZTRU61.pWQQ.cO0cpnJYN5EmCLsXsWiXwO7h2ClAIaczxqxdxahzB5r74d6aV1KbqLwj1WL68z6OemqpnlJ5i6GiiFwRrJSjd6Q"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f3b0b30a2def62';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\/4680239157?__cf_chl_rt_tk=ZFy4HjTSgi8Sb6_7CHEp02Ol7V2a.GDwuS_OP..iKrA-1739102333-1.0.1.1-njtI5685v0LtWlPpqWvgl1w3llXp4JYOKSTPfY1DSuk" + 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