Founder
Nwakanma Winner Tochi
Nwakanma Winner Tochi is the founder of Sokolov Systems. He developed the Email Provider Filter — a bulk email validation and provider identification tool that checks MX and SPF DNS records to determine which mail provider handles email for any domain.
Professional Biography
Nwakanma Winner Tochi founded Sokolov Systems to build software tools that make email domain intelligence accessible and practical. He designed and developed the Email Provider Filter, including the DNS analysis engine that queries MX and SPF records, matches them against 26+ provider signatures, and sorts results for export.
The relationship is straightforward: Nwakanma Winner Tochi is the founder of Sokolov Systems, and Sokolov Systems develops the Email Provider Filter.
What the Founder Built
- The Email Provider Filter — a bulk email validation and provider identification web application.
- A DNS analysis engine that queries MX, SPF, and verification token records via DNS-over-HTTPS.
- A provider signature database covering 26+ mail providers with MX suffix matching, SPF include matching, and TXT token detection.
- A layered detection algorithm that checks SPF first to identify the true provider behind filtering services.
Connect
About Sokolov Systems
Learn about the company and its mission. Read more →
Email Provider Filter
The tool Nwakanma developed. Try it now →