You asked about AR
Nobody in the register described anything this way.
| Launched | What it was | Today |
|---|---|---|
| 2013-06-01 | YCDoorDash Restaurant delivery. · doordash.com | acquired |
| 2009-01-01 | YCAirbnb Book accommodations around the world. · airbnb.com | acquired |
| 2015-01-01 | Cloud solutions for the construction industry. · equipmentshare.com | acquired |
| 2007-06-01 | YCDropbox Backup and share files in the cloud. · dropbox.com | acquired |
| 2012-06-01 | Marketplace for grocery delivery and pickup · instacart.com | acquired |
| 2014-01-01 | YCCruise Self-driving cars. · getcruise.com | acquired |
| 2010-01-01 | The first all-in-one operating system for marketing · optimizely.com | acquired |
| 2017-06-01 | YCTruepill API-connected healthcare infrastructure. · truepill.com | acquired |
| 2018-01-01 | YCGroww Making financial services simple, transparent and delightful. · groww.in | acquired |
| 2017-01-01 | YCBrex Business accounts, corporate cards, and spend management software. · brex.com | acquired |
| 2019-01-01 | YCKovi Making car ownership more inclusive, flexible and simple. · kovi.com.br | acquired |
| 2012-01-01 | Digital Analytics Platform · amplitude.com | acquired |
| 2014-06-01 | Our mission is to make biology easier to engineer. · ginkgobioworks.com | acquired |
| 2011-06-01 | YCSegment Software and APIs to collect, clean, and control customer data. · segment.com | acquired |
| 2015-01-01 | YCChariot The world's first private mass transit service providing a commuting… · chariot.com | acquired |
| 2013-01-01 | YCZenefits HR for small businesses: onboarding, payroll and benefits. · zenefits.com | acquired |
| 2016-01-01 | YCNURX Medicine or testing kit, prescribed online and delivered to your door. · nurx.com | acquired |
| 2017-06-01 | The genetic testing platform detecting and measuring disease. · billiontoone.com | acquired |
| 2016-01-01 | Self-driving semi trucks. · embarktrucks.com | acquired |
| 2016-06-01 | YCCareRev Seamlessly connecting healthcare facilities and professionals through… · carerev.com | acquired |
| 2010-01-01 | YCCardpool cardpool.com | acquired |
| 2015-06-01 | YCOolu Oolu is one of the fastest growing off-grid solar firms in West Africa · oolusolar.com | acquired |
| 2011-06-01 | The leading online learning platform for technical skills. · codecademy.com | acquired |
| 2013-01-01 | IMPORTANT: The original YC founders are no longer involved with this… · teespring.com | acquired |
| 2010-06-01 | YCHomejoy platform for home service professionals · homejoy.com | acquired |
| 2016-06-01 | YCgarten Creating workplace wellbeing. · garten.co | acquired |
| 2011-01-01 | Customer loyalty and payments platform for small businesses. · fivestars.com | acquired |
| 2007-01-01 | YCWeebly Build a free website that grows with your business. · weebly.com | acquired |
| 2015-06-01 | PartnerStack is a full stack solution for partnerships. · partnerstack.com | acquired |
| 2022-01-01 | YCRider Modern parcel delivery for online sellers in Pakistan. · withrider.com | acquired |
| 2014-01-01 | YCAxoni Axoni is building the next generation of capital markets technology · axoni.com | acquired |
| 2011-01-01 | YCDrChrono The essential platform for modern medical practices and patients. · drchrono.com | acquired |
| 2017-01-01 | YCUpKeep Mobile-first software for maintenance teams. · upkeep.com | acquired |
| 2014-06-01 | Modern, on-demand lawn care service. Get a quote in two minutes. · lawnlove.com | acquired |
| 2018-06-01 | YCMomentus The space infrastructure services company · momentus.space | acquired |
| 2017-06-01 | YCFeather Furniture rental for consumers and businesses. · livefeather.com | acquired |
| 2017-01-01 | YCSoomgo Local services marketplace that connects providers with new customers · soomgo.com | acquired |
| 2019-06-01 | YCObie Moving Investment Property Insurance Forward · obieinsurance.com | acquired |
| 2012-01-01 | Car Repairs, Reinvented:a. Mechanic comes to your home or work to fix… · yourmechanic.com | acquired |
| 2018-01-01 | Digitize and Automate Complex Care Workflows · memorahealth.com | acquired |
| 2019-01-01 | YCConvex Software for the commercial services industry. · convex.com | acquired |
| 2016-01-01 | YCGitPrime Visibility and analytics for software development leaders. · gitprime.com | acquired |
| 2016-06-01 | YCWorkRamp The All-in-One Learning Platform · workramp.com | acquired |
| 2013-06-01 | YCArcus Payment-as-a-service that helps any business launch payment solutions · arcusfi.com | acquired |
| 2019-01-01 | Higher Ed's Best Friend - integrated academic operations software. · coursedog.com | acquired |
| 2011-01-01 | eSignature software for small and mid-market businesses. · hellosign.com | acquired |
| 2016-06-01 | YCInnov8 We provide co-working offices to startups, freelancers and SMEs in… · innov8.work | acquired |
| 2017-06-01 | Health enterprise API for data on doctors, insurance, costs, & quality · ribbonhealth.com | acquired |
| 2017-01-01 | YCArmory Continuous Deployment at any scale, for all developers. · armory.io | acquired |
| 2018-01-01 | Better health insurance for mid-size companies · evryhealth.com | acquired |
| 2019-01-01 | YCPachama Restoring nature to solve climate change. · pachama.com | acquired |
| 2019-01-01 | BoardRE is a new type of mortgage company that upgrades any offer… · accept.inc | acquired |
| 2013-01-01 | YCBitnami The App Store for Server Software · bitnami.com | acquired |
| 2008-01-01 | We build communities through massively multiplayer mobile games · athinkingape.com | acquired |
| 2018-01-01 | The people, management, and culture operating system for your startup. · qulture.rocks | acquired |
| 2021-06-01 | YCMailmodo No-code email marketing platform to send forms & widgets within emails · mailmodo.com | acquired |
| 2015-01-01 | Tech in Asia (YC W15) is the largest English-language technology… · techinasia.com | acquired |
| 2020-06-01 | YCSkio Subscriptions for Shopify · skio.com | acquired |
| 2014-01-01 | Rocketrip helps companies save money on travel expenses by aligning… · rocketrip.com | acquired |
| 2019-06-01 | YCEmbrace Modern user-focused observability built on OpenTelemetry · embrace.io | acquired |
How this compares
The register re-probes every domain it holds. Some that answered last month stop answering. We send that list — what went quiet, and what it was — once a month. Nothing else.
How this was made. Show HN entries are every post from 2021 to 2023 with at least five points that linked to its own domain; code hosts and free hosting are excluded, because a repository outlives the effort behind it. Product Hunt entries needed 100 votes — a far higher bar, so they are the promoted top slice rather than a like-for-like sample. Both are judged by asking the domain whether it still answers: gone means it no longer resolves, refuses the connection, serves a parking page, or says plainly that it shut down. An HTTP error is not counted as gone — a server answering 404 is one somebody still pays for, and an audit of 25 gone-calls found two such sites alive with only a moved homepage. Y Combinator entries use the status YC publishes itself, which is why only those can say acquired. Squatted domains — a lapsed name now serving somebody else's site — are not detected, so these figures run slightly low.