Domain > ipv4.rcrowley.org

More information on this domain is in AlienVault OTX

DNS Resolutions

Date	IP Address
2023-09-26	65.8.243.51 (ClassC)
2024-03-03	204.246.191.76 (ClassC)
2024-03-12	204.246.191.123 (ClassC)
2024-03-15	204.246.191.55 (ClassC)
2024-03-18	204.246.191.128 (ClassC)
2025-05-01	99.84.66.56 (ClassC)
2025-06-23	99.84.66.53 (ClassC)
2025-09-09	99.84.66.116 (ClassC)

HTTP/1.1 200 OKContent-Type: text/htmlContent-Length: 2583Connection: keep-aliveDate: Wed, 14 Feb 2024 06:03:50 GMTLast-Modified: Wed, 14 Feb 2024 05:59:10 GMTETag: 67777ae850cdf859141bdef9676151c2Ser

!DOCTYPE html>html langen>head>link href/css/2023-12-07.css relstylesheet>link hrefhttps://github.com/rcrowley relme>link hrefhttps://mastodon.rcrowley.org/@rcrowley relme>link hrefhttps://twitter.com/rcrowley relme>meta charsetutf-8>meta contentwidthdevice-width,initial-scale1 nameviewport>title>Richard Crowley/title>/head>body>header>    h1>a href/>RC/a>/h1>/header>div classbody>    section classlede>        p>big>I’m strong>Richard Crowley/strong>.br>I manage !--— and develop software that manages —--> secure, reliable, and compliant Internet-scale systems./big>/p>        p>small>I led operations engineering at a hrefhttps://slack.com>Slack/a> from 2014 through 2020, through 100x growth in employees and 1000x growth in connected users. I know what it takes to use AWS at the highest level and what it takes to give comfort to the most risk-averse customers. (And I remember a few tricks from a hrefhttps://square.com>Square/a>, a hrefhttps://opendns.com>OpenDNS/a>, and a hrefhttps://flickr.com>Flickr/a>, too.)/small>/p>        p>Since 2020, I’ve poured everything I know about using AWS properly into strong>a hrefhttps://substrate.tools>Substrate/a>/strong>. AWS Organizations and lots and lots of AWS accounts, OAuth OIDC identity providers, IAM roles and policies, VPC networks and sharing, em>and all the subtle yet security-critical details that make them all sing in harmony/em>. Substrate is for startups that can’t afford to compromise flexibility or security and can’t afford to wait./p>    /section>    p>Drop me a line at a hrefmailto:rcrowley@rcrowley.org>rcrowley@rcrowley.org/a>./p>    h2>Writin’/h2>    p>I chronicle the struggles, triumphs, and minutiae of each Substrate release in a href/rnn/>Release Notes Notes/a>./p>    p>The rest of my writing about software architecture, AWS, Go, Linux, and a long, long tail of other topics is in the a href/index/>index/a>./p>    h2>Internetin’/h2>    p styletext-align: center>    a hrefhttps://mastodon.r

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Domain > ipv4.rcrowley.org

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