FixedmarkAbout Fixedmark
Fixedmark is a static outbound IP proxy for serverless and PaaS apps, with planned regions in India, Asia, Europe, and the US. It is built and operated by BitMask LLP, based in India, and is in early access.
What Fixedmark is
Many APIs and databases only accept traffic from IP addresses on an allowlist. By default, apps on Vercel, Heroku, Railway, Supabase, Netlify, and AWS Lambda send traffic from shared addresses that change.
Fixedmark routes that traffic through a pair of static IPs. On paid plans from Pro up, the pair is dedicated to your account. You allowlist it once and keep deploying. See the planned features and the docs quickstart.
Why we built it
- Built for today's platforms. The best-known static IP proxies started as Heroku add-ons. Fixedmark starts from Vercel, Railway, Supabase, and the other platforms teams deploy to now.
- Dedicated IPs without enterprise pricing. Dedicated IPs start at $219 per month on QuotaGuard Static Enterprise, per QuotaGuard's pricing page (checked October 2026). Fixedmark plans a dedicated pair at $29 per month.
- India first. Indian fintech teams and algo traders need IPs in Mumbai, close to bank and broker APIs. Fixedmark plans Mumbai and Singapore at launch, rupee pricing for traders, and broker setup guides.
How it is built
The proxy is written in Rust. It handles HTTP CONNECT on a TLS-wrapped endpoint and SOCKS5, and passes your TLS traffic through without decrypting it.
The control plane is written in Go. It manages IPs, tokens, usage, and the health-checked node pairs in each region. Static IPs are tracked separately from servers, so replacing a server never changes your IPs. Read more on the security page.
How it compares
Honest, sourced comparisons with the alternatives:
Frequently asked questions
What is Fixedmark?
Fixedmark is a static outbound IP proxy for serverless and PaaS apps. It gives your app a pair of fixed IPv4 addresses to allowlist with banks, brokers, databases, and partner APIs.
Is it Fixedmark, FixedMark, or Fixed Mark?
The product is called Fixedmark, one word, at fixedmark.com. If you searched for FixedMark or Fixed Mark, you are in the right place.
Who runs Fixedmark?
Fixedmark is built and operated by BitMask LLP, a company based in India.
Is Fixedmark available now?
Not yet. Fixedmark is in development and not generally available. Join the early-access list to get access and launch pricing first.
What is Fixedmark built with?
The proxy that carries your traffic is written in Rust. The control plane that manages IPs, tokens, and usage is written in Go.
How do I contact the team?
Email hello@fixedmark.com. Messages go to the people building Fixedmark.
Make it fixed.
Fixedmark is in early access. Join the list to get dedicated static IPs when your region opens.