Summary
- HTTP status
- 200
- IP address
- 94.130.138.240, 2a01:4f8:13b:310f::2
- ASN
- —
- Hosting provider
- —
- Country
- —
- Title
- International Olympiad in Informatics
- Description
- The IOI is the most prestigious computer science competition in the world for secondary school students. UNESCO and IFIP are patrons. The contest consists of two days of computer programming and solving various tasks of algorithmic nature. Students at the IOI compete on an individual basis, with up to four students competing from each participating country.
- Language
- en
- Server
- nginx/1.14.0 (Ubuntu)
- Generator
- —
- Certificate
- ValidLet's Encrypt
- Sitemap
- Missing
- Domain name
- ioinformatics.org
SSL/TLS certificate
The SSL/TLS certificate encrypts exchanges between visitors and the website (HTTPS) and proves its identity. It is issued by a certificate authority after a more or less thorough check: of the domain name only (DV), of the organization that owns it (OV), or extended validation (EV).
Free certificate issued by Let's Encrypt: valid for a few months, it is renewed automatically.
- Certificate authority
- Let's Encrypt (YR1)
- Validation type
- Domain validation (DV)
- Status
- Valid
- Covered domains
- ioinformatics.org, www.ioinformatics.org
- Valid from
- September 17, 2026
- Valid until
- December 16, 2026 (expires in 74 days)
- Protocol
- TLSv1.3
- Key
- RSA 2048 bits
Sitemap
A sitemap lists the pages of a website to help search engines discover them. It can have any name when it is declared in the robots.txt file.
The website has no robots.txt file: the usual locations were checked.
No sitemap found.
Redirects
The website address does not redirect.
Outgoing links
The home page links to 6 other websites.