# Ondřej Surý

> DNS Geek. Open-source enthusiast. Debian Developer.

**Wikidata**: [Q109285644](https://www.wikidata.org/wiki/Q109285644)  
**Source**: https://4ort.xyz/entity/ondrej-sury

## Summary
Ondřej Surý is a Czech IT professional, programmer, and open-source contributor widely recognized as a "DNS Geek." He serves as a Debian Developer and works for the domain registry CZ.NIC. He is known for his long-standing involvement in the Domain Name System (DNS) field and Free/Libre and Open Source Software (FLOSS) community.

## Biography
*   **Born:** 1977
*   **Nationality:** Czech Republic
*   **Education:** Faculty of Mathematics and Physics, Charles University
*   **Known for:** Expertise in Domain Name Server (DNS) technology and open-source contributions
*   **Employer(s):**
    *   CZ.NIC (2005–present)
    *   Active 24 (1998–2005)
*   **Field(s):** Domain Name Server, Software Engineering

## Contributions
Ondřej Surý has dedicated his career to the development and maintenance of internet infrastructure, specifically within the Domain Name System (DNS) sector. As a programmer and software engineer, he has contributed significantly to Free/Libre and Open Source Software (FLOSS). His professional work at CZ.NIC, the administrator of the Czech national domain, involves ensuring the stability and functionality of critical domain registry systems.

Surý is a formally recognized Debian Developer, having begun his tenure with the project on October 18, 2000. In this capacity, he maintains various software packages essential to the Linux ecosystem. His identity as a "DNS Geek" underscores a specialized focus on the protocols and software that power the internet's naming infrastructure. He maintains a presence on several development platforms, including GitHub (under the username `oerdnj`), where he contributes to the broader open-source community.

## FAQs
### Q: What is Ondřej Surý's primary area of expertise?
A: Ondřej Surý specializes in the Domain Name Server (DNS) field. He is frequently described as a "DNS Geek" and has worked professionally in this area for decades.

### Q: Is Ondřej Surý involved with the Debian project?
A: Yes, he is an official Debian Developer. He has held this position since October 18, 2000.

### Q: Where does Ondřej Surý work?
A: He works for CZ.NIC, the organization that manages the .cz top-level domain. He joined the organization in 2005.

### Q: What education does Ondřej Surý have?
A: He studied at the Faculty of Mathematics and Physics at Charles University.

## Why They Matter
Ondřej Surý represents a critical archetype in the modern internet ecosystem: the infrastructure maintainer. His work at CZ.NIC directly impacts the reliability of the .cz top-level domain, a vital resource for the Czech Republic's digital economy. By bridging the gap between corporate domain registry work and the open-source community, he helps ensure that essential software remains free, open, and secure. His long tenure as a Debian Developer—spanning over two decades—demonstrates a sustained commitment to the stability of the Linux ecosystem, upon which the majority of the world's servers rely. Surý's career illustrates the importance of specialized technical expertise in keeping the internet's addressing systems functional.

## Notable For
*   **Debian Developer:** A verified member of the Debian Project since October 18, 2000.
*   **DNS Expertise:** Widely recognized as an authority in the Domain Name Server field.
*   **CZ.NIC Tenure:** Long-term employment at the Czech national domain registry starting in 2005.
*   **Open Source Advocacy:** Active contributor to FLOSS (Free/Libre and Open Source Software).
*   **Academic Background:** Alumni of the Faculty of Mathematics and Physics, Charles University.

## Body
### Professional Career
Ondřej Surý has built a career focused on network infrastructure and software development.
*   **Active 24 (1998–2005):** Surý began his professional career at Active 24, an internet service and hosting provider, where he worked for seven years.
*   **CZ.NIC (2005–Present):** In 2005, he transitioned to CZ.NIC, the registry association for the .cz domain. His role involves high-level technical work related to the domain name system.

### Open Source and Debian
Surý is a prominent figure in the open-source community.
*   **Debian Project:** He officially became a Debian Developer in October 2000. This role involves maintaining packages and contributing to the distribution's codebase.
*   **FLOSS Contributions:** He is described as an "open-source enthusiast" and a FLOSS (Free/Libre and Open Source Software) contributor.
*   **Developer Identity:** He uses the handle `oerdnj` on platforms like GitHub and Patreon.

### Education and Personal Details
*   **Education:** Surý attended the Faculty of Mathematics and Physics at Charles University, one of the premier institutions for technical education in the Czech Republic.
*   **Citizenship:** He is a citizen of the Czech Republic.
*   **Demographics:** Born in 1977, he identifies as male.

## References

1. [Source](https://nm.debian.org/person/ondrej/)
2. [Source](https://vesmir.cz/cz/o-nas/autori/s/sury-ondrej.html)