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: "434636.mit-edu.top",cType: 'managed',cRay: '90fb17c00880202a',cH: '2Dz1YNDzlrKION3PcyacJk12A6AARVx7ufPtsxBBaIg-1739179955-1.2.1.1-vkR1ZDtAB8X4_pJUaGdZtkgxg8BC0DiPm2Easvv8Jq1yHD40TQ6gAzFhF.cnM9Jh',cUPMDTk: "\/post\/1279836045?__cf_chl_tk=Qlsx7JPlVgyPpg7uxYX7E_qlfgtIdevBlskqLytCfTo-1739179955-1.0.1.1-RRlmrFc9BiDcHhVB2bWVWBDt7LLtE4CwTifCRLZt0m4",cFPWv: 'g',cITimeS: '1739179955',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/1279836045?__cf_chl_f_tk=Qlsx7JPlVgyPpg7uxYX7E_qlfgtIdevBlskqLytCfTo-1739179955-1.0.1.1-RRlmrFc9BiDcHhVB2bWVWBDt7LLtE4CwTifCRLZt0m4",md: "vJiEKrFAC40_B3xuYTtSn5Q.Kp0lkUQMp1vlhILlo.c-1739179955-1.2.1.1-TFtYQd6FzcS5Yo5j1gBZKpNTN4PnTZbw2UCTpduR_t1HFDUiluxQ1KDejznG7Wjg6_xMxrrS3A9OfSItUxhXxQggXaceW7i1x2jruyzDU1hJYwF9O7JtIg28dVaR7lNW0g6bT9VDK2qEgIoOZjlggFZDfXiOP7FV4MJF7GAjOo6IziLj2MD8Jp6QYOwWvMas4j2ompE16amgibD1qgEfBuCF4m.daJnu4gpLowZ8l.K2lu55Lt3vWhuSgLZGCnNUQGtXkBskW6LkYLX7F39CMNarWuF.ldL4O20wHqWIZXUSi4GwIwyNJ9OfKoP6iVFFQWhSjaz_L0t7p_ngr8j9_Vt5ba6WmomudgK6QKLSH1bK2DcGb6a2ip9vZeveyg5zXkfEgr46OIkWvlrF2lrYtfrzzmrZcfrE.g3mg8dLbQ_gu335UGm5MjqV0SkLL.06b47GHRT8V8s9my6akBjZXX0h9cqiGksMZd9MrUIqdHJA.Lgbg2IiDobGqFQUhFDWltohs7humbgTjWZ9xsyxp6ksoYsJA7_WU2dY0EMn5Rn3aIyxAX50NBMX4S5btPBC04e2.kRICVZ8SqyW5bOOF7S5B.oQguqf0CKM3caLCZu38rDWbbf.pDc.ri9aFnAGc15lyULgwPSeFEIuKN2sG_0WM8Fmh6fJOwPopBLIRNSgqhbdDeedeZ0rGD7hnSGp1wBdyAtYuIZTxkRIAkFCQSd2hOuJBH5.L2hPbQzGYr0D.sCmJFij5QUsN_tSBU.aY46mF6Qf7FaFJTUiNAMGJx36jgYkefVgNvtaPg8D_6kDl1uVhi0GWJD6NlpZFdHl11qdIEdxDlpvdLYw4_Nke0CXmAxD62mH1CjE.3exa3Act2Mf35Vo66npsM2BZcp9ZWVVscgyhtXxwAe1s96PNoySZ1Euvin1DARaG0en0TioKrZ5r7Y1gZtIATVLOv5NgCA7_R9WLYv7ebJHJRurz8tA6zijnt1p1MREHVx53rqq2PwYGcw8MeKv6NCm.k25v4FQ2qxEUQB3porjyaV0kOSvSeyMNZ6pbqPrFDEkeHTTKSdKry8ShAm37nOZzu3AU.Nw9sfuq3wLVOg2mxvKMVqBswPXe9T6.PcOGXJUzrA.UVxHN3.8jwCDwPvDb_kUaqnwdeDXjbDooQ6V6OIcMOzo0_.x_1RGzbabELRTkHzUoD0noDJFWuSbp61z98zkKYH9NbFBBQ620B4PpsE8XfAyomPnH_4GdbJFtxofwffevsgurv0W05L2kJjFfxQVj5WGIK13AinEHvdjmlye88xzr_WweUrExOtu3oFk_z1cT2wuBhbuNHTC4D6oKSaCOEGHMMg_lIzPOfDgE5R2yfDP0sdSq1pPdGpd9x9LQ4Zt3.FcwVCYMgB2zCeAaAVM5_KMfCXNm8XFWHarLnJlTOhDEkN1DzdSMnOjjLrr2oru0Nj.9PfVT73nnGC10MBTCd.ISl0MiZhIpjgtCvcC6UfvNc6rFziLMWJQpMPXqOXJbvNE4fe7a1fvcC61S3emPHJECSt7n.CMYrWpIPliMrV6_QdLv75la.28JUrFsNjzFpyS6_q27gLuVHAt0UAxY7QfV7Sclq_a4H0FtE76A91POukiZz1dbPn_8VWTJScgjRRcC0yz64rWouKA90VE4EMC0_FlJTfFQD.5i6FqbGKocNIW1v_q9X8gndHcCFeylLY6YqdfTim9MnwQkpS2KPWNUjIsUuyefKCpwoeaThvZzSj3Rk5kpsskopprybSeJYaMQ9ZZ4c8Shq3kuOGN2kwCuVvQVKqQ2PLv31MHZHdccbf1WNTHvmE3J9CR6t18NHEW6ojymJxI3x4AaUjgM4sajztXtmYv1eEVNCUoLJPcS874hfkrSJGVROBEANH5hrr8zUhgcr1dPt4hj2vs0vK4tkCSFEJWCheAbCn4ltgoVA_b8CjQYekaeUjCn5047XQtpUKAo2Yf8cmVMaAPb5vbIUi7kMbwCukPgzkZXKtJtIpwg7ceIx1EsqomXq3JqwSjTLLoxtglMtMyNnPpytAUOlaOkpnSvA0Tv9A4ddDjKWqU4th15U9P4rzr0XOcKlwNSxgfnDPVPQ9SQ35S6WXilkgBMO__YsZgvTDlV_XbrgzgOr8ymEJo9x2pikDxNYjPOwD4VGDDZhFZAsW0kwiMTUX.FjWg_AF3Y4VbsRtg63EL5pSZElr_pOLeW54",mdrd: "zxFUESXDN3IoR1lNGws57PRbMyKpBBCh2Ls20wrv3YM-1739179955-1.2.1.1-eH9jVPJu1rmlUgkH3AbSQf2fYQ2te06.kTEnJJte2BSOCox53sVpNhdrVyPDxbTAnxQR3AKTg_2QcR32Q3XMK1uQi4w06djsr8LKQkXVmVeSRiTdHstjd9tfA_jqJ9aXXOrqOv8D7JcUWKlFz2Yc65s.Y5kqar9Z2THNIroOZj7JSRSgKpCt1OpwdRR3QGOlZEohk1d84Rrm5WAnmvnXadW1E9aC5HLycqg0yvVE4EuSfgDHNOm6EWynZqCDcdhmpLP_gh1NBsLO3ao2HH.WJRqe2XCCoL.7rSIzEb4tctCg8jVVAz1ecJYbmHWArxVBZOi1BG8QkggyT6PBT5XRVa_FLgt_Uyct2FVCy1xJbf3y7Rh15O6VUfkA9aMiv.CWsfNIoLyplVaBw8KIbxKzxPWQR5K3fvEsbkZdZZNgtFZ4C31hLrOmnxLQY8x.o2CyZnPDQMiZ1KVFUy6tmBGbInNpHRd_BMo9dAtmULjas7C9VBI4iycPoxjJp8.Pqh_oD83bYOUPXxN4EteElAlE003V_vuG7d1ucpCQpzOqIPijnW__KzL.kSyZIMGAXYDFyklGAYcyq4spHRnk.SQYokkOAUkEp8I4w9oQ.nu0x759xOpNpiqZP15BbPPTCg4_i8yf605VmdmJ7iUmeHXzQ1uVn7PUJovbxIEEsHKRav8vc8BiGhqqlBxuxmL6hohyTVWOWb.XsD9iAxA2Z6FV6GJT.4Bi3b9T4IBKd3Dj_XRF79AjrCOVAbzGTqrO8p.TozKAwoJxnk.EgHy3Oxt4t5fFHF4sHqE5m7NLe2n_bj3_nP0rpEOFJfaGq3mMXaPfuGJGr8E4a6lWxZDDcwezCVJMz.c86wxkZeQQUVBTS0JgoHx_I16abpK0hkqazGR8tNlSLKCBYqXUY955pPO0IiXTA15J1FGPlLcXzJ8LdY3.zED7q9U6lA33MJkVVd52YTDBtaU9YSoY4Md87PIN_9XKAmm3ni5AbWn4cyGWOrbrgbv0yJrLXQz6.yla1zIQQO1HOtdJZFm8pCnoSORS9t_NXt0ZmdUEx6PnMXHiuq09Faec3rpVDDfB1VvtVY384ThQsuaxr_CUTwzZkNOKTUB5zl8Wy4VfeX3OVcp0EEuoGO5ybmJaadinvGoysIvlQfmHK0Fme1Vb16xmcfZ.LN.sg1LsojuFd5WYEOyOrHxJfLeushM3jIy3wlLfUFhTDWEiDGtZFVTSxS4OBgv8iCwfD2GVMs8dnNPsCa.PkAe7IVL2KYT6EWHw5lmx1J9zfHfckV9CgcrSZi.PiOfo6WOatb3XaZmXYb7FgEhMuhAVK6KxR3d5TqyM0PL_IZZ.584zEVFdJft9LTB6i7y.hiV.fajQ8sEOs9CbsN3u6m2jFDcoS3sb8oxnH9W1wis67aOubBs_szMh_mUlUagVmGJSRRoJlQ5npslR_IzuEJCkIFo9R8b71Q3gJFL8hDpetVR0ZeJ1SK9DB1bYbMiHAwTmDu82qF0K_uwY_K9da.DggZju3KSAhQPiCFkftwI42CENzJk0Cob5RUGiMAWr75lvYBGc7WdnJf9RqhIaoWBkcXp.JrDII66qfiiaiF_vrEnqxTXPoxLHXWZXJZOv6.zCV7klydYpUOuiiXKT0eAZL2.VTLUmKXjSQjXucphfOgAXkrAXr15F1ypB_OhOxJEjctotrE6SAJrFnMeI2gj3watNySlhy5Bmm5adl7qQpVu7omdRBW1qjtyUlskIP..hotk._pgoLpbxjgG0YeGz81j_zTa4INgx4_odqryQ"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fb17c00880202a';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\/1279836045?__cf_chl_rt_tk=Qlsx7JPlVgyPpg7uxYX7E_qlfgtIdevBlskqLytCfTo-1739179955-1.0.1.1-RRlmrFc9BiDcHhVB2bWVWBDt7LLtE4CwTifCRLZt0m4" + 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