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David Belson

@dbelson.com
571 followers 351 following 191 posts

I stared at data about the Internet for Cloudflare. radar.cloudflare.com mastodon.social/@dbelson x.com/dbelson internetdisruption.report (on hiatus)

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David Belson @dbelson.com · 18/09/2026
An island-wide power outage in #Cuba has impacted #Internet connectivity across the country. Starting around 17:45 UTC, @radar.cloudflare.com data shows traffic dropping by >50% compared to the prior week, and @ioda.live shows a 10% drop in successful active probing.
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David Belson @dbelson.com · 10/08/2026
The #earthquake in #Colombia had a nominal impact on #Internet connectivity, per @radar.cloudflare.com data. Traffic dropped 35% compared to the prior week. Traffic at an ASN level appeared to recover quickly. Some loss of announced IP space, suggesting infrastructure damage as well.
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David Belson @dbelson.com · 02/08/2026
I'm amused by the lack of an "It's OK to display, I'm an adult" opion.
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David Belson @dbelson.com · 29/07/2026
Learn more about the impact of this widespread power outage to #Internet connectivity in #Kenya as viewed through @radar.cloudflare.com and @ioda.live metrics: blog.isadati.work/internet-imp...
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David Belson @dbelson.com · 28/07/2026
The impact of an issue impacting @t-mobile.bsky.social subscribers is visible in @radar.cloudflare.com traffic data. Starting around 20:00 UTC, traffic on AS21928 fell by as much as 10% as compared to the prior week. radar.cloudflare.com/traffic/as21...
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David Belson @dbelson.com · 24/07/2026
A power outage in #Georgia has impacted Internet connectivity across the country. @radar.cloudflare.com shows traffic dropping ~75% below expected levels around 20:00 on July 23, and @ioda.live shows losses across multiple metrics.
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David Belson @dbelson.com · 23/07/2026
Connectivity problems with the @azure.microsoft.com westus region are visible in the @radar.cloudflare.com Cloud Observatory as an increase in connection failures, starting around 14:45 UTC. radar.cloudflare.com/cloud-observ...
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David Belson @dbelson.com · 17/07/2026
I've been a subscriber for almost 30 years, have authenticated to the wired.com website, and have confirmed my subscription, yet all I get when I click on an article link here is "You have read your last free article."
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David Belson @dbelson.com · 14/07/2026
The electric grid in #Cuba has collapsed for the 3rd time this month, causing a widespread power outage. @radar.cloudflare.com shows traffic falling around 15:00 UTC (15:00 local), and @ioda.live shows active probing failures around that time as well. en.cibercuba.com/noticias/202...
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David Belson @dbelson.com · 06/07/2026
The impact of the latest island-wide power outage in Cuba is visible in @radar.cloudflare.com traffic data, as well as @ioda.live active probing data, with drops visible around 16:00 UTC. radar.cloudflare.com/traffic/cu?d... ioda.inetintel.cc.gatech.edu/country/CU
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David Belson @dbelson.com · 26/06/2026
He would regularly cover the Akamai State of the Internet report back when I was writing it. Had the opportunity to meet him at a GigaOm event, and got him to sign my copy of Broadbandits. A big loss for the industry.
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David Belson @dbelson.com · 22/06/2026
Data from @radar.cloudflare.com shows a [complete loss of announced IPv4 & v6 space](radar.cloudflare.com/routing/lc?d... ) from Flow St. Lucia starting at 21:00 UTC, and with it, a complete loss of traffic from the network, impacting connectivity island-wide. stlucianewsnow.net/flow-reports...
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David Belson @dbelson.com · 06/06/2026
A widespread power outage in #Jamaica is impacting #Internet traffic from the island. @CloudflareRadar shows traffic fell ~0200 UTC, with the largest impact to FLOW Jamaica. The provider acknowledged the issue in a Facebook post. radar.cloudflare.com/traffic/jm?d... www.facebook.com/FlowJamaica/...
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David Belson @dbelson.com · 02/06/2026
In a Facebook post, Syria's Ministry of Communications & Information Technology announced that there will be no communication cuts during the general exams this year, in contrast to #Internet shutdowns implemented in past years. www.facebook.com/SyMOCAIT/pos... www.google.com/search?q=syr...
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David Belson @dbelson.com · 28/05/2026
Although TXT records still comprise the largest share of requests to @cloudflare.social's 1.1.1.1 DNS resolver from #Iran, request shares for A and AAAA records have roughly doubled. radar.cloudflare.com/explorer?dat...
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David Belson @dbelson.com · 28/05/2026
Digital certificate issuance volume for .ir domains briefly jumped from <1,000/hour to >4,000/hour, suggesting manual & automated renewals from within the country were once again possible. Nearly all were from @letsencrypt.bsky.social. radar.cloudflare.com/tlds/ir?date...
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David Belson @dbelson.com · 28/05/2026
🧵Some additional perspectives on the (limited) restoration of #Internet connectivity in #Iran on May 26: Based on request traffic to the @cloudflare.social 1.1.1.1 resolver, the rank of the .ir ccTLD has jumped from #144 on May 25 to #96 on May 28. radar.cloudflare.com/tlds/ir?date...
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David Belson @dbelson.com · 28/05/2026
Cable damage has taken Digicel Haiti completely offline, as @radar.cloudflare.com shows that #Internet traffic and announced IP space all fell to zero just after 22:00 UTC (18:00 local). Similar problems occurred multiple times in 2025. radar.cloudflare.com/traffic/as27... x.com/jpbrun30/sta...
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David Belson @dbelson.com · 26/05/2026
Traffic data from @radar.cloudflare.com shows a rapid increase in traffic from #Iran starting ~11:00 UTC (14:30 local). Traffic from providers including #Irancell, #MCCI, and #TCI is up significantly. radar.cloudflare.com/traffic/ir?d...
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David Belson @dbelson.com · 20/05/2026
The shutdowns in Iraq are implemented by having network providers withdraw announced IPv4 and/or IPv6 address space, effectively removing them from the Internet. radar.cloudflare.com/routing/iq?d...
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David Belson @dbelson.com · 20/05/2026
Exam season in #Iraq started today, and with it, widespread #Internet shutdowns. Connectivity was cut across multiple major ISPs between 0300-0430 UTC, though networks in the Kurdistan Region remained available. radar.cloudflare.com/traffic/iq?d...
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David Belson @dbelson.com · 16/05/2026
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David Belson @dbelson.com · 20/04/2026
Interesting observation: Sunday-Thursday each week, between 0900-2000 UTC, Googlebot appears to ramp up its crawling of plain text files. A similar pattern is visible for JavaScript files as well, Monday-Thursday, between 1600-1200 UTC. radar.cloudflare.com/bots/directo...
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David Belson @dbelson.com · 10/04/2026
Seeing some additional traffic from Iran on @radar.cloudflare.com since around that same time on April 8: radar.cloudflare.com/traffic/ir
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David Belson @dbelson.com · 16/03/2026
Seen on the banner at the top of the page at www.cafeluna-centralsq.com
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David Belson @dbelson.com · 15/09/2025
I didn't realize my Macbook Air had a dialup modem... 🤣
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David Belson @dbelson.com · 14/11/2024
So what you're saying, Change Healthcare, is that there are cybercriminals that access your computer systems *with* your permission?
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David Belson @dbelson.com · 17/09/2024
Yay me?
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David Belson @dbelson.com · 16/05/2024
Thirty years ago, I published my Bachelor's thesis, The Network Nation Revisited, a critical review of predictions made in 1978 about the future of Computer Mediated Communication. 1994 may have been a bit too early, but much has changed in 30 years... thesis.dbelson.com
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