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-aff9brzaa.mit-edu.top/post/8504923167

  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-aff9brzaa.mit-edu.top",cType: 'managed',cRay: '90fae535af2805a5',cH: 'KYvtYGD90qAYmVpGkS17SuDzX7Z.PuLc.1ipXzBWd34-1739177885-1.2.1.1-egDuA1kgA8VAoQPhse9Bx1VSEQ4xCWFFp2cxww8zHwIFvJkuyOO9aXNj5z2OBykM',cUPMDTk: "\/post\/8504923167?__cf_chl_tk=xhDPZcA73Xz2X43hdpHj0pw41A8yH2aPDLN5OFV7.JE-1739177885-1.0.1.1-0h3AnCvdWrbrPb46fCmNCkC8HMRO1OwflRG0esO5.eU",cFPWv: 'g',cITimeS: '1739177885',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/8504923167?__cf_chl_f_tk=xhDPZcA73Xz2X43hdpHj0pw41A8yH2aPDLN5OFV7.JE-1739177885-1.0.1.1-0h3AnCvdWrbrPb46fCmNCkC8HMRO1OwflRG0esO5.eU",md: "U8CJLO5ffOFGpNk0Dt76myiIuVmBFKMWoIdYmxNjkzo-1739177885-1.2.1.1-SIIi7mLJZ5CYXhNdWewd2p4kY6NYxTzNWJQ0OcZGbf1HfJXBey.rmg_1VwP4h99.LBNLxrwRuELzS3YEo07vNs2TLD8qsC5MgSOBHtLYnwk2oe8RLNz3piDo4JVTuLBp3aWJ7XSuVOp7cl0OOhL7kOv_5gBj8fdvnnBJ4NSw5vW3nlfKyN_KsOKSwjORJVmDTDcV0EFXq1XZIqDBdxr9QL85bq1fc6gfU_XPmbm1ft.cqTbdeNY1TE7dB9GpaLD5E1kH5ISkqrJeypl_7pWyPmkUmXGV4BtFGVVtaYuF6XwMHuwn0j4tsMv3uc.I_UDHzjr91goLwooEnE0fBMCKyGIeJ3cAeWl2zcnbnA3rBlQ0HK05_nic2jCTh6hfHcs5QnIMSRCWRG2MsnBwy.qaBzqhSzR2TgW2hzuxq8adGbBCRHgpHps2fXmQpXvWVhj1bHZUG72RA0fwou_rBwonbkqzmJkuqqvlkQ2pCrWNUKKGRcm.bpJvWEWma6.GJCv.Uylo1MOnQn2fVmC13VerHWpl6FNuz90cqLJalQ_8vFEwv3LjmPAU3VAwwnA03w56QtbQObON_3R0DFuRxr2RJG2L4UAH5_EOuQLDnU3l0QaWq_N7pvtuAo_.XU1JbZwDvhprIOclAYh9cuJbjj_fvYdsB99G3.tnQxqnjOxx5p8lXsPsSwKb5WE_1YniCYnulOYTmVVy1yIAUZdsEohBsqr48GStY4qk12_ydkVnG_nRxSadS7OsyackXDt1avmRLJ6l3DwzQvxlUdNHar6Al5qseHlabYrfJIuHaVVsc5178qjSMrQJH.USbDSa7VZDeH.8JY9OM.dnkhGn05t_.9pr7TolhhSHur2hKcqmvrZO.qhJuNukDyN9fjP4_HlZnNMjLsiD2zDp4Aiy9DdiA9eA12z4bYCbp.apnvbmYWX.M.bq_Wi_QtusWWuWAd2ITxai40a.QXYKn0a_fZEB5Q_DEDCLhJkcyMWPb3q17w92KNl1OEhAHY38JudWI783RJNt_tGw_w5PDvfmrJCkGa.gih5hWWiLY2ayKvm7yh0pN.VnL1ihCQjdrKNtLr73SEbEKaBoYWMaXCsW4HYi8aLiH0CWhGZXwXKPA85.AKZC5gxmEZizBuJIg88xXBf5LlovLVBY4Wa10GqMs2v4dbcNDP5htSG07rvffeyf7By3kaJ25cLT7gM9sz0au.EcLncQA8IQd.On.067ZFMy0xCrJoC1FOqkVM_gzXqDUXfDkFgQGWX2i01SpCRdBq5s53KeYCVTA2Ciz5khekrZA17raUYPANfro890AIP4ZqRUJ7ATerbR6.UyduvZRgTv6APjJxVIOkevbUYZH2tqnFLE1gfef2aILTGKaUkciR30sCrVtdElb0BzUbdsvW_.eBeGFEcbZVN2p0pVO7PhJ6pA0E3NGrkmuY_Rx9N5HgzybrcM4pi4Cab6V1MzTzZgPSsbhHGVaPXZ83cGQReCpzLVnULUxo.3iDDkv2PiIe5UoqX1u5m2SHgmJEInHvqUM8TXrg8xXbDQLC1RM9lx35ebChqwwVDhsPa.5biQcJxJllIOyXW10qwc8AxH9Qx8e1ywHeGKuOX5gtMNEVCb4EtPkjtDEdmoYU8uokMdO3qjF2BX81wL78FrbaDU_lJQEcuRfr4fR6ERbDJYQ84TFEo50STF7b1H6XIDw3g4JWboylcN_7S.x3.eX3A6RDV7X4Q5VGA04pDrZKjegYnZd5o2pQ8jN65FPAZjABWlJWLsY3LjW9Hh7JyvK2vEqu8D0KfADXpTDt1xEdZ2ewPhk3I9BP1Vmce71y8a56DOPKIjxNpadwHYeN1VzX4gXNQS3qv5IJKf3h9ST7tJABm8NrC2X_RnwZ_EJsq5C9THsropKafvXQmg0OkXCfPXMSPEIFw_K7F2AhbfwPS5CQRFJYyPebk4YSdz99un7B40khZHqrpGppCiPs6jdj8ACf3oHeVIC7KhSusQd71qHDYiqCrq.THjhtz8y.2LzRgRoD0_wW8WsTmYOTdLonlAvWA2ADXWPB.12KZkr2HCQqx_Jn36EPU.rsQavhEWRpBINMJ9cbxfXkLEfG5YroRbodL9VqC6aw0u0JZVz5dQlPFOIv1TlFfvY34UeTBu9mwLhDcr0207Q3JE9nRTz11qFnYsloYqBtEkpmQFd1p1KZGxJS4MrKkj5FUzl.p4L501Ez162QTDCjzJuuOLnPbdE_3Q",mdrd: "8ywDZmPyvIARt_tSHLv1oUm6PDUSZbvOIvhgPqM0X24-1739177885-1.2.1.1-FvX8gsBq3KhvA1OW5I9ZNOtA.qdcqdbL04ODgE5lliUY5KuRWqtygpF40o5AGtW7yzD.gBnNmPi6UG1Xy9YGESg_gdnyIOpHggHuUT5.T9JX8hRU.5ROQfiCzjYMkKMNSH9aaRFrCVsvwMUg5Tezw34n2jHSVl2mOMxiX5FXUDXsiKm_uHsJ4_IpL.AkrBZZtGM3MOO1oxP_q6UdatsQlbm0Sq1I3gtTuuy32L9VRAKas6UZHdKzlR.7DI0Rz_uqVyzSxqnz3Ac9IvOminjHMSsdx9Y0ESF0uBHKPGGR0flj4Xlgj9LJWLvQuP7QARvNck.EyGCp2Ub.VV9WSGekKKsUDE3BUxpB6hsMn6Gz1bcvGg7pjL2u7rSMhUSs9SovebMjH7F3dXjMguRd7o5a.J9n83tJpgLJGOEMr8vPEsyDD.usSl0HayuC.QxHM1Y8t1FfC9SFRUNfE1X5vxqPnjVE4VRyJE9oAANAwX.CveS.NQ6qoXc6X5db0FGKX0EewHHeuRhQnS.LJCVeP8la5UClr5zV07f_giDJPJJPW83UIQQ0Hw0_.h_ZX4wfAyPu5gEVhCAdrt1.cbhANS_cN1JMBkyUSpPqFbu7mpwjXjJXiGsUIfB5u2toTpLAciDDXW9jOEN6nK9Edmjf1BdgLZHU667B3Inb7EsleXxtpEQld4YQ7p_qn7N3BLKG4yLfKTs6BxcGA3g1yHKfx28WeZs0NighweS_TorBzUhTJjbuG4JWe4YbeuEEYbWcTvAtUSzQwc2tprLwX5bB9nQz.8H0P5SRXGh1yAzGCia5kIuYoYn5iHo69s4zbGR6lOrFMp68Ue5D7WP_7wPuoUpOA3snj04klYYIasdmUvQI7AxBMvey0yevN5hkKkKN884tlkllI5uIjKc8VSyQ5YnsFPdpvS_G9B_NAw_Uq_BR8dcBki3Y7ifWc2fbxElbr2o3kybzw9_yH1GlyXGIQNZYUrkkrhuWI6BcakoigBabc0WNADO6C8YmPBtsL77G6XbNrkrKmt42gl4CyzSsJrhL4Q3L0DsE85Yxf8T9rT4fg6On7E5wNXdoBEsVEeC3FTyXcDfavGyyHWoIl4xzW8hw7yAaLkGwm6VV5sISNiWsYvGBQIbjGq9aAxp3sCsVyDrORxK9rAIynFZk6ooyO0_HxZGE415vENbdbI6o6JGftbuwjJI96TtJBieCj43iss0ze7l0Y6mDXzPrmRLYBrbcIEB_GHq.E0djaOizZr0j39hMfC_f4ZLEiE3lkUMCQ2LKOUr0xbcDhC8_fx9xylic5.N.kDh3TvkfnxruDgLEiXLfIxBmuZrJ72HykdIPOkOgeNP4R2afaDZvzUtEnkpq7r8NxtTQQnKwxn_CJyUk_Ig5b5Y.fkEEuc1Yo5cWXqh3XRy8HFFnCmzVkUTGvLyYuJPOlz9N5ON6xOfexhlW28girg2aSKGOohei6LUeJiTOFJK_mwDtm.cPOTa2BdPN7lph7X16aVs_CP7Q0PyFtQSMOetvsSXtfyvf5JB0AMYvVszp35.uloVw3KtOu6sClISAN4x8o3DVvOGFUDiiMdflz_5iRUHz3BawVdKM8Pevl3lYDiSnTFWA7JCXOVCeOYwRs7vhpL0GAVSod7fvLY0paSZ8w5Z1WaI29fFyYLpYCGQ9leYcWN.9HOnctRbJDsMDmenUIh4GXn3G3fgWKzv4Jbte_bV_TAPmX9hv8LnC3Gok6f691WamIOED6FXZotQ3TI3rqc.LJwdBBpwMS3NPx14DFz.YHey4OMl2LR66mwqG15b9A2ebiInePsYpyj4ZEuZU._fWOhsKzgwVKNo"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fae535af2805a5';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\/8504923167?__cf_chl_rt_tk=xhDPZcA73Xz2X43hdpHj0pw41A8yH2aPDLN5OFV7.JE-1739177885-1.0.1.1-0h3AnCvdWrbrPb46fCmNCkC8HMRO1OwflRG0esO5.eU" + 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