Domain lookup
ycombinator.com
Hosted by Amazon.com, Inc. (AS16509) in United States · Tranco rank #2,337 · 🇫🇷 Top 10K in France · registered 2005
Hosting
2600:9000:209d:2200:15:891f:4040:93a1AS16509 Amazon.com, Inc. · 🇺🇸 United States · —
2600:9000:209d:3600:15:891f:4040:93a1AS16509 Amazon.com, Inc. · 🇺🇸 United States · —
2600:9000:209d:4200:15:891f:4040:93a1AS16509 Amazon.com, Inc. · 🇺🇸 United States · —
2600:9000:209d:8600:15:891f:4040:93a1AS16509 Amazon.com, Inc. · 🇺🇸 United States · —
2600:9000:209d:9e00:15:891f:4040:93a1AS16509 Amazon.com, Inc. · 🇺🇸 United States · —
2600:9000:209d:ca00:15:891f:4040:93a1AS16509 Amazon.com, Inc. · 🇺🇸 United States · —
2600:9000:209d:f400:15:891f:4040:93a1AS16509 Amazon.com, Inc. · 🇺🇸 United States · —
2600:9000:209d:fc00:15:891f:4040:93a1AS16509 Amazon.com, Inc. · 🇺🇸 United States · —
99.86.12.125AS16509 Amazon.com, Inc. · 🇺🇸 United States · Clean
99.86.12.28AS16509 Amazon.com, Inc. · 🇺🇸 United States · Clean
99.86.12.68AS16509 Amazon.com, Inc. · 🇺🇸 United States · Clean
99.86.12.82AS16509 Amazon.com, Inc. · 🇺🇸 United States · Clean
Technologies
Web serverCloudflare
CDN / protectionCloudflare
ProtocolTLS 1.3 · HTTP/2
Security headersHSTS 6+ months CSP Frame protection nosniff Referrer-Policy
SourceHome page probe · 4 Oct 2026 · statistics · about this probe
DNS records
Name serversAmazon Route 53
ns-1411.awsdns-48.org
ns-1914.awsdns-47.co.uk
ns-225.awsdns-28.com
ns-556.awsdns-05.net
ns-1411.awsdns-48.org
ns-1914.awsdns-47.co.uk
ns-225.awsdns-28.com
ns-556.awsdns-05.net
Mail serversGoogle
10 aspmx.l.google.com
20 alt1.aspmx.l.google.com
20 alt2.aspmx.l.google.com
30 aspmx4.googlemail.com
10 aspmx.l.google.com
20 alt1.aspmx.l.google.com
20 alt2.aspmx.l.google.com
30 aspmx4.googlemail.com
SPFv=spf1 include:_spf.google.com include:mailgun.org a:rsweb1-36.investorflow.com include:_spf.createsend.com include:servers.mcsv.net -all
DMARCv=DMARC1; p=none; pct=100; sp=none; ruf=mailto:dmarc-reports+f@ycombinator.com; rua=mailto:dmarc-reports@ycombinator.com; aspf=r;
Registration
RegistrarGandi SAS (IANA #81)
Created2005-03-20 · 21 years ago
Expires2027-03-20 · in 5 months
Last changed2026-02-13
Statustransfer locked
DNSSECnot signed
SourceRDAP · rdap.verisign.com
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Known domains: the Tranco top 1M (most popular sites worldwide), the sites most visited in 238 countries (Chrome UX Report), every active .fr domain (AFNIC open data), every .nu, .ee, .se, .ch, .li, .sk domain (registry zone files), every domain of 1021 generic TLDs such as .org, .pro, .cloud (ICANN CZDS zone files) and domains seen in new certificates (Certificate Transparency logs, .com and .net included, collected since 30 September 2026), resolved regularly — updated continuously, last update 2026-10-09. Not exhaustive: other sites may share this address.
From our weekly resolution of the Tranco top 1M (last run 2026-10-03). JSON: /domain/ycombinator.com?format=json