for Atom and RSS and KML
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.
<!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: "kxcgja.mit-edu.top",cType: 'managed',cRay: '90f491221a0c0736',cH: 'FFDDF156K7fGcDOCso0o.gP4Foy_QnWBbZVMX_rnoqE-1739111526-1.2.1.1-OF742MhY_i1vPzIZO50vY1git6bWaCKEZih2psPHLVxEoNTGLuV467qkQyyzNVOb',cUPMDTk: "\/post\/9274350168?__cf_chl_tk=sg33Xxqtie_SClw5U40CNvHdqyD0jv6X76K0HeQYjDo-1739111526-1.0.1.1-esiqE5CctdninV0DmBWHP6ovQffXTlAxW.A_uIrNg2M",cFPWv: 'g',cITimeS: '1739111526',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/9274350168?__cf_chl_f_tk=sg33Xxqtie_SClw5U40CNvHdqyD0jv6X76K0HeQYjDo-1739111526-1.0.1.1-esiqE5CctdninV0DmBWHP6ovQffXTlAxW.A_uIrNg2M",md: "fYAn5ODYWUdkONsYTb0LOXsiOCmy_3JRuy81WCj.OB0-1739111526-1.2.1.1-xU5sqGmGSw7AEnIKBKDvIubbY5mpRdRARoj_aek7_iCXmySpYXAaXt5izqEojhwvTwLwbqEDgIBnpPFhzC5NnoOr2daci2dWosDiEvRc1KAH1l1QU_Nd1bFj7fJarnPXvEm8gARUjq8uaED8m7x8ze5SLblj5uIm.68Gbxw2nnAYUPqSi1ecmus_Sxq78vF1p0JD98p_odnIdS16pRbMt1wI1YGauDb2OuW5GXca0x5yOJili5Pj2k1U0r37hnmMmKjLAr26UenUapbgcbkZW3QYSY3s.8SNCMdfw7U5dZpqXd8F9OOp6xoapbbkl8K.lXu09IK5Y8diyudT5fIFIje3s1xuZe9A5yEGByUjij3vs5oEyFfVE1terKT.aOxdTcOvXn6zdL__5MhKTF_bnAAvCdJ3OXAnsAWIc5sIwfT0.N5g6b9JqD96ZcPM1FuCO_CcEekDi74EJvUpOunY_Rq84kMhLuaDhFxCljEkJL2CbHkQDv5MyWsHOtBIKd85Ertlr0g95pZb_3XgyJQdTKSsB9oYrcvlj.UpwNl4NemkNkNPuVUN.6iFTR3nJfedAz8wIkItBIOg5Nliz3PY7huuKHeA3vIWuxOw4hxzGZH28nIwkoA6HNgl1mv5wgSw8HdroxokWdjSwaBrUrEVC17K645JkTJmXs1xokQ0VLfGyU2MNL80XSbZxvGJVbZdzjIcaLl6JM5uCfkX3K.J754buLGg5KVpjeel4t7L8KR.NdNlI3IEQG5I9Xty.aUTpv6XCwyaftKe5b4QQO0eOaxOygB8jklXb5eOOnHoOttUxjwzkcgWo724fM6BIxCayWDb9FIdUd_2HStejXmdtVtK41WOPEbg2liRA6DnMANe6aFrAQ63dS8MbY3wcm8rPQDs4O7aFbX3rkJoqwoSzl.uC8yzmsQtQWY2048Ig6SP_tXOEqZO5nZLTMOE0Sotr2Sp.hpjRurKTqRAHE5k.VNlZnppa0pLq_y52rVIk21uSt1KnQBPpcpTTsyq8auBlm8mnBrR6LrZQMjw0mWnkJAx5pO8lNci1Rdp29DX3hiRBmNJpu01oul.7SbpFTDUuC1Im891q76G6TSqXjgDbjAuxjZOZpcOcXo2_Qbtl0dsVg0U_pTyrH3mhDoAdc8qoIsp1bwJf6.D6gzC6EnMpRvfRAH_8h3MhAHYyTX0WYcE8uwfKWtU5A.93kZa9zPTIal7ciX6ce2_0lLQp2zT7LUoJT2Zjqq4NA7r6q2uHFl4dFJ8esn4OK1rsOOVmmpO8gvXNBap52lHUeYgwRtNo8Ti9lY0Lw05zOlJG9rMKX0EQxN_fTEUz4_h5IXuTkG6Ww4ahe6KGIRPKI6ADaKImesbEW5QjQZvd_QglozNJ6cVcSjwhL0cXRq2iJ2gZujnrFqK9VqcC.VCFx6H9rVb8RE7h4kgOMXbWOwak5OljQ57WN7AtX._Q7UsCTpfGsg2DfB38kkDWuYx4hfFjW4Zxmz.NGF4wGzl087.mmmDqX56bKamxoV2xOiZ1apDv1xkUH.3BuQfN78_bHBHbJR4hMcTZf7F4CGaScevqy3rtdFpCldQea7uKhrHlw8Uv9mo.ZH6MLL4wR0EyiR8vQgqlGdhD89CIluv2_nVQDXti7r6E7ErthrUTYWS8qK9ym30kxNdbszf_inbkgrp24tDEihza1EjeSImZ6WyWqR3xQe20J3eUSJ6AKvZ1KyYAr4NISKWgjEGSBRKLjpVtOGSQVWd2HA_U3TWSH5cnrA2Z.g29wa._Fn_yE2zcuHihY4zrPFAY7R3EjGNVtm.GVR1YHMzAhGtONkxLCAEA_sI6BLhMHxK99Yej0iD3KD0PELzScV93bkIeO_rz2VboWzcwVkLltEjtTVqaYzCpI4C7qmDVLpxN5qgMURlma6mO3pcNbyFyZ5zJJ0kQIoDxStKb6C3vwnWsjrbWDIjFaXw34JkqvFWSBL.K5fsdw5R0RRqT1vrY31zJf0i9P1p9QkX.LHR_sv6g7SNX2.S17Q_sFknHKRRpV98.eS.XJN079O9GKXLK.EPGEekyqlHd.RmOdAJevci_z1LS10GAoWhujrUGiLKnNUanqE21hYUcECNV8FNuC5ju_KK9sqXSpC367JsMor96yKKpYub08mn9LQ_ptxRHYDXdn5FXrW.zywgp0D1OjImO8U6B.ZiEFv_b2SdGyMztILxQVoaZE6zEQ0",mdrd: "coZw9irUKaahuG6lRhI6mFRNihb65LNQl.bxGl4H4Fk-1739111526-1.2.1.1-OH7hy63y8kraYQdtNRbznVHPUvW6zce5Mw.KG90ub8pT0REsjh46Nwqm2_H2gR8Ovyh2MjuktrjyHHFLO3sS67eV3.BtrruQ3VlTqDnRUQARxuNkfUVv_PkvQ2hh7oU48b_k3BCr7xw1qlpsAkzrWa5z7YNmyqKpJ8xT8VYoRC8NzyJPE.fXO.8QVDY79KWsyMbiUt7LgoxW99flgF.43NFOMBkTjo2mXsoTwXUZa1nl75JUk_4SiAdZTQQB415N57bpvxdSESTVz0rpQ2U9NTZ62CP4JRvx6Wzq2929Mvm5tLWug45ERrBoY8eLDgstJhms1mfBTltdZ.iILeybPjkjaoIUvg5W1tIrBkwB3wnuJ4VEieTa64ccWLCnhSm8Lqj4Li9VvDmw4FajV2TBpnbqrEXMOMaE.KX4jhL7rcJ1lyhI8spMMdXAKcl9K8n.tw3pQessazgRyc7m52_yXWl501GEOX2baQP.Flz2rST.4N7DjiUmHC7WFrLk8Sp_sCWqm2oJkQ085K_A8jiP0OIQxXXHsmfk0BxxCSXZaKktCc1gRcmqK728nWsaVRyXl9fSHiqjO47Uvy_tjKpLXjyW.XL.YZ22COf.M8gNS.C8d.mTh2Cs900Vh0sbhlgh45kemQII9vfT4.mRes_wJHS7ljh7NKtsWC91HBZh2rNYlaDXf4jjAqto2dMpRQZeUtLAC92psmoXdUoTTFMv__8igGIAs4uJROnnGXjMjX4d11pJl4lLQafTCmotlAykXuFH58GdRSMJhm9L2nLDqfPfdF6JrWH1.4PW7Jck30qNbqg3tTC566.UREXKsw3nRRZHa7rBllWAHad5dxvLtSrgp7.Yo67uhiPm.GrrrUkkPBx_67bMqlAPH9jcf8imfmR.FpjJG.RmjXoijC4bZQcsWNdSJflf.dSwKwR2x8.cYrRfoSUNGXw.6oz.GiqJXKlQvc9XlRdKM8WDdomQ4qwDAhU33cfIGMoZqBIsDi2FyVq0yBCm67Xj1sZgL.8UMm827GulKyzTlClBnbLq0OPgf7nOUnLHuDSrtssiLYXa2z79hr8mnonK1tOeDVNW5fs8xw7mFoiWIF6iV3Ohd4cW0oF.NR7eJlItLWraoqggIx_Vf2OvGMtxBTAv_8jkcqJX9vSRVCPeH2brMxE8YR2wr_.pGfy6Wz_ZZK53ABAadFzcCdGDwDVhASM2y4J2S_7MAHcvkxMgxd01MiNiWYtaZiEr2_5cfs.xBXbUIO4t72SVYdrGQqvBDt60YiqO7348c1EPfF.eqS.d2wt25vhoCy5hNG.NBU04s8FfhBq_.Yso7B6Am8K7_iL8A2fqG49cIbIQPLiIYPgu15mlckX9bQEM9YpKnvVY7R5oaVtF54WNeHYIIEclAmroYTPa3gEwmkAfeEanGanVnpHTsYl71LshdcE9BGnK9uBnzJG0.gcsghdtCNJ_2nryZERSQbT8DTg3YQpVf4vChwodmIdd6_zf6x8hONC7fKrxpbS7Az7fH5nVvCus68vdBXYAOt2G3.cVsajWWaRaGcO.bhxtRxJ684tBd4ORVGgHGWwnloA43bK3CEwsfRyZe_m9nSGH4pweM13JM2UZ_qyajDKCCssfw7u6TRN4UTJ_glvWAhiZph0Ly.aZqYaq0KGnkOe7XF3uNR80KFaaOamtnUyl8Vh20bODMDnrGrYTwFhMOET6XpVTR4hg7mkKtWNgT1Vb3F3etroSKU_SzOjcw6gPDY8sjtHRbr7NASAV2AbRByajPT1lxbFu8QipaW0M"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f491221a0c0736';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\/9274350168?__cf_chl_rt_tk=sg33Xxqtie_SClw5U40CNvHdqyD0jv6X76K0HeQYjDo-1739111526-1.0.1.1-esiqE5CctdninV0DmBWHP6ovQffXTlAxW.A_uIrNg2M" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>
Home · About · News · Docs · Terms