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://mit-edu-2954387601-gov.caltech-edu.pp.ua/post/2954387601

  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: "mit-edu-2954387601-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90fd7b305a2dc96f',cH: 'i4U6t0nwRlawmGyeeIofxO_AK8gQGzxCOgB5HRKqF3g-1739204999-1.2.1.1-nmLFu8U.KtQfD4zmBerHUmdrVWCloH7Cyc0BqWPbZzPzAxO_lc4X.xSXJNRsjggZ',cUPMDTk: "\/post\/2954387601?__cf_chl_tk=7s2km2PQsDm9n00z_gR2Umzf_u2Ux53IUX3DyGM59_I-1739204999-1.0.1.1-6D.SF9Wi7kqBgc.68pSIlWvExmJzAb40g0Uft8Y801o",cFPWv: 'g',cITimeS: '1739204999',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/2954387601?__cf_chl_f_tk=7s2km2PQsDm9n00z_gR2Umzf_u2Ux53IUX3DyGM59_I-1739204999-1.0.1.1-6D.SF9Wi7kqBgc.68pSIlWvExmJzAb40g0Uft8Y801o",md: "xTewNSIP30JpGxBQTWH3ZGjZXEIiudph5afaQz74iCI-1739204999-1.2.1.1-qaK40VGEBWXmVWDl1KevTWk0drseer6OeZKDjsRaRBiszFVolcNBWAOyN9PcG431YHT2vsd_U_dua94r5mxA8wkwyEkuZaGYC0.IvZE1qBHjqVu7Af6stQ9Ig9a_F8m_y2PLwUvlT9uQKvR7e59ErV1kntNNvYnE9yzdzAGnMUHzLzNUHSkH85gciYB_00OiAUb1uq7AwZW5VIkrOHKC6DCxzJUZEApfiafDpeMCOF02fCJd_bPHkiGvsnrnxr1ZuW2aANSlgi70r57GIoZq9HshG4XVEAtU_0csV_hQCFD2VR98EAQ8Ep9a.KnQEkt62iiQTNKu6TqUi.PEoV0_JBxKr4ZVqu4G132ul5bG16774hk2ZRtH90cWKse7yQdRpevP83gJVefBv2o23qyat3CDoqc.lWBuBHqtPnASP84Gq4zf_oLY.MVMfHS9s_kUyEVagO_qiPHoTgBytG1QIdxAvS9um7OshLbht2.QVQyN37nT0Wvad8uynGZrAQOf9g6pHXA.tKudtXiMGzima_T3oz3QRK.Le05OLGwiyYlWpSMNSaFiYFODrqH94X3E3K75sxy.GuXfW9qUixju0ChY402VZSvZ8rAEGJMydHWvdW5yvGgTKceF.uraG8j5d4LqufpzS0GsVW_Pj_FNYvaLnjy4FpxM_T3dJszdcFakQt7Gi3z5k3h0Ik2oy1DRB8fRm7NF3o6CXZO8fkRSXo7lsdlIWX9udw5BMTGiIIG9rEkMaFxkWIsPQO5R_MugK0XTK7RTvd39IFOtRvInQck5BlOwu3o3uiTsRkyzKBIfkGzBkXqNjiWHM9egXtibVLrFwAwGRpNBV.j6ufZ7BK.ItbZ65ExF20QWsb7Yfk2v9Xga04Fsqgy5bLTJUAMlBzw8ZHFe1cnXVYf509KmA11W.ulKniyRPtdracrgWkrUDYUr71w_nQR75j3XgejeHvEOWIMGuS_x_Qufw_WrpWgfuUFDX8PyqEwfoNBsNjzl80Zod1GQ7wcWSMeoivHVUwn7joRQ6bKgdZD0syDlosFWsnfLeq9NCOoit_IyidwZu4OgxRN5klCZm3Nj49pCiMZc0Z8KRT6J4dAN8LENEWDOVMM6ooxDKlZK7zUk6__KB7m3E3ynliX3O8Td17mTXsFvD8J2QA2xCaA8mJxB6UqPACYU3J9nNDlqpPGdfP4AP.0P0CdURGbI1q7xA0STPcwAxrT_rUhJdBPl.SyfyWTG8ALIox.gn5E35ydc5MpVZCy9ngV.aA7VxO0PhWDD26j6Z9zuWLW8r6mq_N5QESSE09ZKoXrKoW0J1y7T_4DIdMbM1eMV6L8OxkXvcDVtzdzLdy2dV9ZmCqjfzmp3UHb8lVApkcyYcZ8j0USb1OVfKU5UI4K6B_CcdZgoYXOmzvhNZ.dp8FRdD9.vMKUabuUhZzjn7oQlcU1bbd3sFoStcty_8YAWL0.sBKqXU5maQ__Z.RbreeYlb7uqIhvRNvFTGzQh6HJZ4xTaNq_RFCKFSCHE1t_BdP7gZQuhX19vxkMUzZlTFkbTJ4oUN5E7_qnjoOrELYfoRmo3exwczXEPidrM81W0oT8eHhGbRE.FSHt9WFpiZCeci0I7vbGdtUiEtOPOIEL05EhP3_sV37SEH8z5yC3DwCmrErqx7k.MGr4VpTR0AMG8xv90VkTz4PK1KDOAQF2ce3.167QqFYjuNmxCx59CSCA.pc65GVnQHnqnrbAIsKmD1e9aop5vVusCxKVNEXcv18bzP3JwvI79UeATk6GzfNWnqx_7mrvp9HtFxrl8d6oLteVjfYt2gR.H1qVP2YGJzDLlsAZNONTRre4lxUS.Z9q19Z1rDmTX0h7ziRAk8sW5NiMk1kEmRxMcOQV72bLhSFtT9qY5J79t7uXYV4qCvjvi0MsZ6_6rISzMj7xFdSXcf8MhkHVkVRo3V5YLIeI1oMNq2shhGStfsLKboCn4TWcY3DqeCspp3vMe7_noY6enMg2xqUlUZfpLcNgl2NXw8Bbs1fObABDiDnjn43OulJpCf6bC_1_6.aMMsA2wFgbPJD3nrXB2w4GBoJzfy5OdKotZNfuxq41gwDuk8t.OyNyowzIwiqaik8tAppRpHh5asDQk9w0juiA2an874Z4uWtoHrDWuXnAG7tssV1RJrxhfhZJTjZ63qkOlw6XeN1SfaktEAXWBHLrPe9MinFIQcTu3OdZPEo9rtQffwytQXz1CdT21LZOh4cW0LrhmHiQXgEGZiOIcMQ",mdrd: "ZcuO9NSOLLN7C9G7CXPyO940NEXxxZvYcKVQvIWRdVU-1739204999-1.2.1.1-5Gv62G0dO3eBSiG_x8HS29p0mToLnpEBMFSyUMWwN3fSSWLy5B926aSgcT4f7pnNbUIRhnttjeNERvx.pUBBa7U.9DrSVF095TlQmfDftn6pgS4c62D9MhHMK_grWEqVnFqNMijRFyg7W8wW1sCcXOpPSvgwe0DrL.vuj1EZElHTTrw199CRFpG5t8CeVG0ooPW46Wzg1MktysvK.xV.RhmhMgl8eeT_dfphTvEml41kI4HcM9WuHYDtK9_AB8VzVG0vOZ.T3SUHnmJLUmzP64vjfQRiyzRx3Tgiyvxvwzzmq855QUBTfRs9qyXKwresI4bFs7Rm5YokCY2z5mvGNyMvWJ7wTsD0z15MG9Qofo9GtHoKlarxBSkT862Kp82J9zFRQMblkNHWWbB1lvrqViEpWISd9ZpNSa.RAwke35X8C8rUS04iTCMn.gbFRJeh5WF2FbUM412AeYYhVJ9_j_mjAfMZe5_7nLJAKEKbh8S58MOMs9DPxq8ySm7SSsRfjeRcDrz8EMy1YNAJHdKZ0LTGNSrQJrvWVe.KyGVHmZaV7ivyv.sieg0AxsnKP0RXsK7zLw48npKqoyTUKL3j.zXbCapTYYhWkT72cHIfqBtSbSlPvu9EvgMI2clNGJ5H0OrxhjHZ6ukTxZJ58lzjsqOiUj2LIoVaXTJaJCYvEOtElXFdnBD8cPCVb_nx2dlWJG60Goc7M2VE72jRXUlTW60RFLhgy9ieqqBGRW70vEDmfNMEn32NVlQgQWOTJ_j8VayktcI_tRCtl1BCUR7gQOdS85u2MAF6jeNarbIQwXE6jwcT1LxnJ7m6_wUbf.riOm99ULY4FHSc30VaIUrTXFivVCyZB0T0CML._IDv6SPdvo5lOUJJM4lVOBi2GPtbCuAjIH3qMvVNddKxwnPUKbijmVZeL15kAoXFsj7Ba.8BRKyWZKoQUSSw.oEB_yUoORI4LETZF8cPEWtGtC5CNmC_1q6uo6Uy.c8VbtEUJVjBPAo_8P8zVat8k1QU16ey1Vlpc9RYUXDa2CJoaXMdHA1JITsWEy2r0bf5a1EhUojzihTpGHxFIh3NkSHJEVnGPPJNkfG4cNl.1Dddr5_.wFTdtvBEPDbiU6Z8am6V27CGkr2Ndp_KRbikH77xDJfqK1d0nrKocrtj70wts0mB3l1EfVxI7USmh0uUwBPqDZ1cFpHoq6ib1Use1qMGsJ_S_8jKmOXoQqr9gkCkYHuk9xoVkfp0C4Tvu_f432b__4TwCdaYDJFKIzgR_M5vHxQBAyevEoHu9luXIRmKqUL18rWzGtkOiAvkcvYutqXg2CSWhrnxYYgJvrUZ86H.8BkW5olXRrSFDyvL.j7E.qg3aNqcDVvC0oKkfak_N899Zsd00sdtoFdqf_dTVRME3nNK6Ir4TBFKdGhj496X_1qk7ivX8RoJWCRhW5GX3Qc7a5Uz96jYyR4hh6cF5dZZe6WNKKSgY2LmZ2keN5LubXDVMZNevsKxmdXHy1FmhHyOxP2fL1yqrW2nzJcDwDO.FAnn3X.ehU0cGUuCLcDHsY7gpgVeX.PWkoLXCxv9gmTH0DVQg6C.Tn9k.bjhjMnA9XZ2Q1o5AOD3mc337A8PPEMnJ7D7xupform33po90rARRIh_6PbCKnQ8R_0qcu5CDbnCAgc1mCs0Mt4PU2MOwYuvANqwTafFTbuRm5vMqoLAForhtdKu7C4Cq1ghhzviE0DnQIaHadWTB7poo2nA71OMgvKjtD1h2jJ2KMgUR_loLFgqj0Oj0rpbWVB7tOmbNXolqpyP587_Nhy1v_9kqeNtcZ5CZeTm3KS74fg0zR8iy1csr0hJGrI0Rta7R7JFCXPI"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fd7b305a2dc96f';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\/2954387601?__cf_chl_rt_tk=7s2km2PQsDm9n00z_gR2Umzf_u2Ux53IUX3DyGM59_I-1739204999-1.0.1.1-6D.SF9Wi7kqBgc.68pSIlWvExmJzAb40g0Uft8Y801o" + 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