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-affcx23sk.mit-edu.top/post/9542378601

  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-affcx23sk.mit-edu.top",cType: 'managed',cRay: '9112af871b51c98b',cH: 'hc3933mwd9kMfFsD.YZCi2QRGcnLqgixMhCYx6X3_C4-1739427344-1.2.1.1-BNtqoC_tF3LL3wKSDYmT_r3XGPl4P3lefRPnqohkDD5_O_kLzXOSFNHWQkkBBTOf',cUPMDTk: "\/post\/9542378601?__cf_chl_tk=x4tlNxhdJy2Six5L4SurAUJY_YSaZ8_XCkHmcP3fXJI-1739427344-1.0.1.1-HiMJWbOOhNlT4tpTWwR3At6zlkZu3eM5moeYgQJDLl8",cFPWv: 'b',cITimeS: '1739427344',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/9542378601?__cf_chl_f_tk=x4tlNxhdJy2Six5L4SurAUJY_YSaZ8_XCkHmcP3fXJI-1739427344-1.0.1.1-HiMJWbOOhNlT4tpTWwR3At6zlkZu3eM5moeYgQJDLl8",md: "1Bnmv.c1hnTRJ7nIfqXE0tShLE3GXfmiBbRGqGPIjrw-1739427344-1.2.1.1-uURyokpLir1dEhNb14KUsn2EHvPjobQUXvQLSUIxQYUdTVHl6ZZInUSN7JN64T1E9ikHK4B_qwuA_jZq5bA00oT3JZ799IO4pgiR_nIkYk.hlwfakcFAnQoG5GuwZ0SR0HxOINAuuB.8MAXDEweASEkitEjlobONgBbkqEqD1HZ2DWfl9OcrdNZnfNxGKz.vY_wNiBgzlX.4ay94JYDEspiTbanMklLnP7zrwJdCNT.qhIMO0CH0.etaNZqHJyB_ntH3Npji1lFL90_QBDFzAexxhULDa_WKptF1hDUaASX1vCTvZmwpbWwc6vi_zzD2WMbtivPWvz5snRCzAzt9IvOERLDJADpQRgmAUyF3vTqDkqp_Xz6N4rwAFwrf9vtVWUftiSxQwcS7Kd5iGWw0NuPxZxZEONytyCdaQld63W.V3dNxW8QB3ranhlNjmfj_gaqfDpuqEtm8Is07oGD.lPg9ioOZInp47ScBlCIZpygfOU2t2iL5K9am1dqVnu6DTYIGBfHAYarG4eJC77TKXnCRAccNc.Ti2zJjCEVixar0xOoo2xY5aXZd9t3irmwYyAZDouzfQXfEYTlvNy.5ydcEhU2aJclbbvTY9m3RtFiDjxO_ezACxdln.TO.KdIToQUqexkwKJWZKtoSAkv12MYed4AQx9xjzvERly58UjpTkbNhYd.inAuNenIwft_rJJYxru.WjmI5UrZsHma5m_cHj_N4Hs7MHMaIF6vN0UnGdarnhI9zt14JOMULaHkfg.4fehHeNwUGMK48Aq7UfMOhzGM.TPagqxcOr29aKbsGo0MQK6l7WA2hRn1EUrUrVGqQIyN5monYaPc0g3coG_LA8SSYdBfpNhe5yAsxQ1xRcSRAsP1Hyb5hwOScxrt0Ey31HX3ig2svue8fgH0IIOQAnIt_Ib6RLW5x4o1tYyyPelYISkGxYgiQBghYXSv9BcWDp34tiVfUPolWmMYk5sJH3LVYmWU2_JH6aCEkIY6fXmX1hkR18Ja3ySPOAH37uWmJHyXCyOBRVs3b.C8zd0gp91kaYZVsN3E7hXfXy0hx5WwJT_CA9is6_t21U4qUDZ4djbqWeUBUSlgzyi4lkzJ3ii8EapVR3U.yet9SIMMT_OXMPpWcQqB6X2GNdHZVFgl.hqUUgQfIdyxmBrG5F7cczpeKYSFr1S6.IxeieQfRQ0m0aWLltz7iQZYiFBqYENqMNORVzHhzb5dAibVPijWP0EgFgIub15i8vqLgnkRj35PRjchQG6qJ8vBNq7FpwuOggq6cbycy3XCckg0liwMOTsGn4L5GqgMYEVHD1oWrv5Azl19Z9NXB58A1tvsKn0_Bvte8kj2fnfM0dAT6yhKmbxhpLkvzdN8IWKfWKlMZ7KowwLogB7LRCc9Jvz5mfFe3eBAnYIaEWs_xd63WQfGvSbQDsUQyrgNpJRqU6ZQcC8qlXqZtHbUK6uwGHDwwQkNUIARNOZGOnh1LFvJwuA0P0EvDLN9dnIM_b0NhXANBA8dsgpaHeON9Izqa_9NLyFV1GGU2xESs.__73pKnzcI8nErOCisvfYCBEaYIKbDXvtx6ds6uJX81DkmTN7zN2TwxJwveB8nmzwhOJ5efquligQi6XA6DeM5Skt11SPJPdfEPqF9c.h9DnmV9p8PT74KUCgg6PH3JhF_t7Ov5se04..ZUi4EWENv9LVviN8jQ_FzYCczcshtIPbtHUm8S8Unfb9pXKNYP1ddF36TH8xBgQi0XlRYhHAEp866y0CvgpdveTOmOp11rKptyOUNGY4JijpevTQ7L4OcVOH87FddNSVn5w_1dDv.CHWua2VAqXfFuIpg2OPvS5sW7KVKtY9uH26grsr8l87w7fm_yaUQwFFojGvUgLE7TwUWJEnYqBzfdK9lQCvHafYRWyubf81TDdkYn6bRnqnmR7eMa5U_BT8GcxuOKvMU4BEFo8rMM9e2PmhYma5pWE6hfkvDmcSCtnQIYjEQUr6C0ovxlK8.aIl_pMSqoGakGAPMlcHkeYsXAyuBdc4mJo0JUDvJdu42MHlZo9tpG9I89UsLiNUufp_tJt8TtshJIZIxMAbdKHd6QLOHm.PBwAHfqrNd38uuFjQ2MpdkMv11_7YWhf0IGryFXXYUY8XFv1gjptELLro6OpUjs9oAQ3xNfEzmuVjO4ulBhvm05RL9zdnVhDP1_nbSKYvedgE9tcZKXQprN5y7fJMn9e.oaskXLxj7w",mdrd: "srwW3LqjTJNU5RYmSqZvSQXpIj118fr6DUdwUR8BEO8-1739427344-1.2.1.1-HdhzgxL1wjaW6k0cJ9o2bGc0g9UsClWYz79A2.84UL_3uJ6uSAV.SUNgE_up6iM1F6VyGVVivgcKo.7oo4T18rl6LxaCmr.eXDOUh6kjamrB1j4QuWZPPjZCItLLxAYmKG9nWl_RvYStfkItXTZpNuueqAGT_RTfdEhPvfwiRCzGZrQLLwNzSTTim.m16hjXofv4agRkvmluxjRb069QMbBVaKef1jS8YYJ2zJxRSV7yMj8tPrf5rYu6YT3MgW50S9ZJXTCgkiaMMdzIcZ.Ug9e3RS9r4m8_khqyJotl_fP.rgiONs_MAIiVszIcGoxt8g7TAZxy.wxLkoiIbNNPev7lan1lrpiKCfu1FlUElVwyJOntU_i1j4ew3XMzeq3azSRYSHp7KiE_UeL.g1a6YkyPGNbw0HV2.Gnlczbf4DQWm7tzeFu3VIZaK62Hgm6YAud3SO5ubFDtdt8i7qFwfzax5HxtcapoEbMX2z9mguO2LKbEKjSWJ9zTfqhPGJl7i.bYUIsNUlvlGoW1Mx2ZHl4N2rpTLhOT0B4vLBax0EwOkbExN_cCrR8pWWvB.NALfKUioBhMMDUedHZfAPhYIfWAgnrCoOnHcGQlopA.cNlYdbjT6cd9jFnfOY0wmqHFMxauYBjnsQH8dyo4n8Z7s.mZSBAl8L51L3yxJByUku8slXQp0Caew7.oEPc9ZSAWYRczohs2lI_81pni4gBbRZwWmpMkovlAKTclsn4GmHBFpOpQK9_tc4NAj16xdeVkvIkFRHDe.XPSBsZTN6bf6xr7lfsa.ld3M6QFXgrmn8MZXnn0MPlJAvaes3S6MVlh1XYiWaw.ymr5lZN8wGWMsMiHe5dED9uR0y9wjz9ybdu8eBVUiQQ.J74DVOwj38yhEcY8Xj_0U1qWURceyrGZbQYiTSr1o13edb.noEz3ZhUgcCCfPvnQhF9puh7dvx2.NlbFehfkW4_yCNs7H2w3yHTH.VtuNjPfWm3KvV7WJCMd8bPlcr7tZ5Yxu8Pq8mO8ny7p4OzwIJRew3MxdrBWTzY2bNrMQY_gChelufHj6VkfzIG_XVbM5bQ4nPXCwNawN3o1kZr3Mtj6EpzlK8LjXUGcHUVomQazCupuPf9RXwuilJD93RNloh8j3jiIMGVY1kEo20JYT9kLdX3MR1KeeDxoxHbGV0OlCQqj6yCNpaEqFKHOS1jiH59wqJRQLxLT0rleZI9cTmJtvp57rKyUGa0__1McsCr.lAdQBzy3iBk_5mlB1APsKZNMos8kP2pi_6REfcqS9rhuYNi1_o5IQbuY0G6xdIVhjIxq9Om55wvErcfpBrrhHZb7WljaJpFqR8XGeGFesJNnU7x32Z2mpXnyWZbWjI.ISjXGkxKqheORJ.iSEMtX06h24eMxyMNCqVb.c6Z56A0bIiBgrtHHOYP1ATNB9ZUl_dmA6HnNE4MwFk3IA0IXISDjpodrAqxiqCx40DnyEkPLklnNuHX9cFZ6foa_5ljNiwHM9m1QfU7f_9kGZTB49J0Yfj6JzFGAkkK69WymnwZlUMiDCvyeO4VKekZaRmO8Xf1xrJLGnxhqfrtbKp7sAvyIoiUSE9RwqGecgVxpocVJR2nQJ7qptP_q6vr_40Sjs_plCbtjCPk6afhFNV4zJjbzs4l.gy2dOE86pR0K8obBv9KnugBDae7L7cNeZ0Dhtx1OS7ypFPcuffIHzsTz2LvJlsyJMkq5lSKViWPKEYeSs.P60YFf4RZbIzrbuHGH4XqAx_5m9BuvdoeZ9eJOfycT3QjHj1txgthioAriSvpLDwtPRNkqnw"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9112af871b51c98b';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\/9542378601?__cf_chl_rt_tk=x4tlNxhdJy2Six5L4SurAUJY_YSaZ8_XCkHmcP3fXJI-1739427344-1.0.1.1-HiMJWbOOhNlT4tpTWwR3At6zlkZu3eM5moeYgQJDLl8" + 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