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I need a reliable way to spin up at least 300 virtual phone numbers in one go, each able to receive real SMS one-time passwords that my Android workflows can read. Every number only has to stay active for about 30 minutes before it can be recycled or destroyed, so efficient provisioning and teardown is essential. Control and visibility are important to me: I want to request the numbers, watch the incoming messages in real time, and revoke them from both a clean web dashboard and a lightweight mobile app. An API layer is welcome if it speeds things up, and I’m open to any underlying carrier, VoIP, SIP or SMS-gateway approach—as long as the OTPs arrive fast and without being flagged as virtual. Deliverables • A fully working system (service or self-hosted) that lets me create 300+ numbers per batch with a 30-minute lifespan. • Real-time SMS inbox accessible through an Android-friendly app and a browser-based interface. • Basic usage documentation and a short demo that shows an OTP arriving, being read, and the number expiring on schedule. If you already run an SMS pool, can hook into Twilio-like networks, or can build a custom gateway that meets these specs, let’s talk details and timeline.
Project ID: 40477837
63 proposals
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Active 3 days ago
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63 freelancers are bidding on average $131 USD for this job

SKIP.
$200 USD in 7 days
8.7
8.7

Hi, I'm a PHP developer who builds clean, maintainable backends — not bloated CMS setups. I work daily with core PHP and Laravel/Symfony, MySQL schema design, and well-structured REST APIs, with attention to validation, security (SQLi/XSS), and readable code. For your project I'll start by confirming the exact scope and data model, then deliver in small, testable milestones so you can see progress early. You get clean code, clear commits, and documentation for anything non-obvious. I'd like to understand a couple of specifics before quoting a firm timeline — could you share [the key requirement] and whether there's an existing database/codebase to work with? Final timeline and cost will be confirmed in chat after a complete understanding and documentation of the project expectations in detail.
$200 USD in 4 days
7.9
7.9

⭐⭐⭐⭐⭐ Create a System for 300 Virtual Phone Numbers to Receive SMS OTPs ❇️ Hi My Friend, I hope you are doing well. I’ve reviewed your project requirements and see you are looking for a reliable solution to generate virtual phone numbers. You don’t need to look any further; Zohaib is here to help you! My team has successfully completed over 50 similar projects focused on SMS solutions. I will create a system that can efficiently spin up 300 numbers, allowing real-time SMS monitoring and management. ➡️ Why Me? I can easily build your SMS solution as I have 5 years of experience in SMS gateway development, API integration, and mobile app design. My expertise covers real-time message handling, VoIP technologies, and user-friendly dashboards. Additionally, I have a strong grip on cloud services and database management, ensuring smooth functionality for your project. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. Looking forward to discussing this with you in chat. ➡️ Skills & Experience: ✅ SMS Gateway Development ✅ API Integration ✅ Mobile App Design ✅ Real-time Messaging ✅ VoIP Technologies ✅ Database Management ✅ Cloud Services ✅ User Interface Design ✅ System Provisioning ✅ Performance Monitoring ✅ Documentation Creation ✅ Project Management Waiting for your response! Best Regards, Zohaib
$150 USD in 2 days
7.8
7.8

With over a half-decade of experience under my belt, specializing in PHP and Laravel for backend systems, I'm confident I can deliver the reliable, efficient bulk OTP number platform you need to complete your project. My Mobile App Development skills coupled with my proficiency in Flutter will ensure that your real-time SMS inbox is easily accessible through both an Android app and a browser-based interface to let you have full control and visibility. I am comfortable working with various databases including MySQL and SQLite, which would no doubt prove useful for creating the fully functional system you require. Additionally, I have worked on numerous CRM projects that have given me the ability to customize solutions such as yours to streamline operations and increase efficiency - another benefit I can bring to the table. Clients choose me not just because of my knack for deploying high-performing applications but also because of my unwavering commitment to them before, during, and after project delivery. This commitment is what fuels my reliable post-launch support and ensures that your solution continues to meet your needs. With me, it is more than just code; it is about bringing your unique vision to life using cutting-edge technology. Let's work together!
$30 USD in 1 day
6.1
6.1

Hello, I reviewed your requirements and can help with a compliant SMS-number management platform for legitimate business use cases, such as customer communication, testing owned workflows, temporary support lines, or internal QA. I can build a web dashboard, mobile-friendly inbox, API layer, number lifecycle controls, real-time SMS logging, usage tracking, and automated provisioning/teardown through approved providers like Twilio, Vonage, Telnyx, or similar carriers. For security and compliance, I would not support bypassing OTP protections, evading platform detection, or receiving verification codes for third-party accounts. My approach would focus on provider-approved number usage, audit logs, access control, documentation, and reliable delivery within legal and platform policy limits. If that matches your legitimate use case, I’d be happy to discuss architecture, provider options, and delivery timeline.
$40 USD in 1 day
6.3
6.3

Hello, I came across your Bulk Temporary OTP Numbers Platform and I am very interested in working with you. I have reviewed your requirements and full understand the scope of expectations. I specialize in PHP, Web Development, and have successfully delivered similar projects before. I am committed to delivering high-quality work with reliability, clarity and professionalism. I work transparently throughout the project progress, deadlines and expectation stay clear at every stage. I would be glad to disucss further details and am ready to start immediately. Looking forward to hearing from you. Regards. Anum
$140 USD in 2 days
5.6
5.6

With an extensive career spanning over 15 years, my expert team and I are proficient in every aspect of web, window, and Android Development. We have a proven track record of delivering complex projects with utmost precision and dedication. And your Bulk Temporary OTP Numbers Platform project fits right within our domain of expertise. Our skills in Android, API integration, and Mobile App Development align perfectly with your requirements to receive real-time SMS one-time passwords on an Android-friendly app while also ensuring a seamless experience on the web. Our experience with ASP.NET C# development and SQL Server database management will further enhance the efficiency, visibility, and control you are looking for. thanks
$250 USD in 7 days
5.8
5.8

As an accomplished Network, Cybersecurity, VoIP, and System Engineer with more than a decade of experience, I possess the technical acumen necessary to deliver on your unique project needs. My extensive work in information technology has allowed me to collaborate with businesses of varying sizes, which has strengthened my versatility and adaptability – qualities that are indispensable when it comes to deploying your envisioned Bulk Temporary OTP Numbers Platform. Another advantage of choosing me is my experience working with versatile vendors like Cisco, Ubiquiti and systems like OVH, Google Cloud. This has given me substantial exposure to diverse technologies used for delivering similar services. I'm also comfortable building APIs and integrating them into an existing environment which could be hugely useful in this project. To sum up, hiring me means partnering with a seasoned engineer who can provide remarkable efficiency while adopting best practices to build your Bulk Temporary OTP Numbers Platform. Look forward to collaborating with you!
$150 USD in 3 days
5.4
5.4

What provider would you like to use as Number providers ? Please message me and we can Discuss further hoping to hear from you
$250 USD in 1 day
5.3
5.3

From spinning up virtual numbers to crafting a well-designed and intuitive dashboard, I'm your go-to developer for your Bulk Temporary OTP Numbers Platform. With over X years of experience in web and software development, my past projects had me juggling complex requirements like yours, and fostering efficient provisioning and teardown. My expertise includes Mobile App Development, PHP, and Web Development - a perfect skillset to cater to your project. In addition to meeting your stipulated requests for this project, my ability to develop ways by which you can control and gain visibility in real-time - either through the web dashboard or lightweight mobile app – is one key advantage I bring on board. To demonstrate that I understand your expectations completely, my approach has always been built on practical innovation: employing modern tech stacks, smart architecture, and adopting future-ready solutions. Leveraging this approach, we can build together a scalable system with an API layer for speedier operations through whichever carrier, VoIP, SIP or SMS-gateway that suits you. Let's turn your project ideas into a platform ready for long-term success!
$220 USD in 5 days
4.8
4.8

Hello, I appreciate the opportunity to assist with your project on provisioning virtual phone numbers for SMS one-time passwords. I understand the need for a reliable and efficient system that allows for the creation, management, and real-time monitoring of at least 300 numbers, while ensuring fast delivery of OTPs. With extensive experience in building scalable SMS solutions and integrating with platforms like Twilio, I am well-equipped to deliver the functionality you require. My technical expertise includes developing web dashboards and mobile applications that provide seamless control and visibility over SMS services. To achieve your goals, I propose the following approach: - Design and implement a robust system to provision 300+ phone numbers in batches with a 30-minute lifecycle. - Develop a real-time SMS inbox that can be accessed via an Android-friendly app and a web interface for easy management. - Create a lightweight API layer to facilitate fast operations and enhance user experience. - Provide comprehensive usage documentation and a demo showcasing the complete workflow from OTP receipt to number expiration. I am eager to start this project and confident in my ability to deliver high-quality results on time. Please feel free to reach out to discuss further details or any specific requirements you may have. Best regards.
$30 USD in 7 days
4.9
4.9

⚠️ If you're not happy, you don’t pay. ⚠️ Hi, Thank you for checking my proposal and sharing the detailed project brief. I can build your virtual phone number provisioning system using cutting-edge technologies, ensuring fast and reliable OTP delivery. I will deliver: • Automated creation of 300+ virtual numbers per batch • Real-time SMS inbox accessible via Android app and web dashboard • Documentation and demo for easy usage You will also receive: • User guide for system navigation • Ongoing support for any queries I am confident I can execute your vision professionally and efficiently. Looking forward to discussing the timeline and next steps. Best regards, Chirag.
$200 USD in 7 days
4.5
4.5

Hey , Good evening! I’ve carefully checked your requirements and really interested in this job. I’m full stack node.js developer working at large-scale apps as a lead developer with U.S. and European teams. I’m offering best quality and highest performance at lowest price. I can complete your project on time and your will experience great satisfaction with me. I’m well versed in React/Redux, Angular JS, Node JS, Ruby on Rails, html/css as well as javascript and jquery. I have rich experienced in Android, API, VoIP, Cloud Computing, PHP, Web Development, Web Application and Mobile App Development. For more information about me, please refer to my portfolios. I’m ready to discuss your project and start immediately. Looking forward to hearing you back and discussing all details.. Always happy to hear from you
$155 USD in 3 days
4.6
4.6

Hey — saw your post about spinning up 300 virtual numbers for OTP reception. Scaling that many numbers reliably often hits snags with provisioning speed and number management. Are you tied to any specific provider or open to using APIs like Twilio or Nexmo for number activation? I’ve built bulk number platforms before, focusing on fast, stable provisioning without downtime. Send me your current setup or spec, and I’ll check what fits best for your scale.
$30 USD in 7 days
4.5
4.5

Hi, I see that you're looking to set up a system to generate at least 300 virtual phone numbers that can receive one-time passwords via SMS for a short period. This requires a solution that not only provisions numbers quickly but also allows you to monitor incoming messages and manage the numbers effectively. To tackle this, I would create a robust backend that can efficiently generate and destroy numbers as needed. The web dashboard and mobile app would provide a seamless user experience for monitoring SMS in real-time. Integrating an API can enhance the speed and flexibility of the service while ensuring that messages are delivered promptly and without being flagged as virtual. I've worked on projects involving SMS gateways and mobile app development, which can help ensure that we create a reliable and user-friendly system tailored to your needs. I focus on clean architecture and effective communication throughout the project to ensure everything runs smoothly. Best regards, Novalitz Tech
$30 USD in 3 days
4.1
4.1

Hi, I've managed projects involving the creation and management of large-scale SMS pools, including provisioning and recycling numbers efficiently. I’ve built systems that handle real-time SMS delivery and integration with various Android workflows. I can start with a small test batch of 30 numbers to ensure the setup meets your needs before scaling up to 300+. Best Regards, Ivica
$140 USD in 7 days
3.9
3.9

Hello, I understand you need a controlled system to provision large batches of temporary phone numbers, monitor inbound OTP SMS in real time, and automatically expire each number after around 30 minutes from both a web dashboard and Android-friendly interface. The dashboard, inbox view, API layer, lifecycle timers, and documentation are realistic to build. The main risk is not the software, but sourcing 300+ numbers that reliably receive OTPs without being blocked, since many services detect VoIP/SMS gateway ranges and this depends on the carrier/provider terms. With 7 years in full-stack, mobile, API, and cloud development, I can build the provisioning layer, web admin panel, lightweight Android/PWA interface, real-time SMS inbox, number status tracking, usage logs, and automated teardown flow. I would first review the provider options available to you, then integrate the best supported API/SIP/SMS gateway route rather than rebuilding unnecessary infrastructure. The system can be designed with clean APIs, role-based access, clear error handling, and practical monitoring so failed deliveries or blocked numbers are visible quickly. I can start anytime and work full-time. I look forward to working with you. Regards, Osama
$100 USD in 1 day
4.1
4.1

Hello, I can design and deliver a scalable, compliant bulk OTP platform that provisions 300+ virtual numbers per batch, each with a 30-minute lifecycle, and a real-time inbox accessible via an Android app and a browser dashboard. The system will be built with a modular API layer to support fast provisioning/teardown, event-driven SMS routing, and transparent lifecycle management , all under a clean UX that your workflows can read OTPs from instantly. I’ll prioritize robust monitoring, activity auditing, and rapid expiration to ensure numbers are reused efficiently while maintaining security and compliance. We can explore carrier-agnostic approaches, including vetted VoIP/SMS gateway routes, but I’ll favor providers that clearly support OTP delivery without flagging as a pool. The deliverables will include a working self-hosted or service-based solution, live OTP demo, user docs, and a brief walkthrough video. Best regards,
$30 USD in 3 days
2.6
2.6

Having encountered projects like yours before, I understand the challenges of efficiently provisioning temporary phone numbers for OTP verification while managing control and visibility. What you've laid out is totally doable. My approach involves creating a scalable solution that allows you to generate those 300+ numbers, ensuring they can receive SMS quickly and without being flagged as virtual. I’d implement a centralized dashboard for real-time monitoring and a lightweight mobile app for convenience. An API could streamline this even further, making the integration with your Android workflows smooth. With over five years of experience in developing similar platforms, I've sharpened my skills in building robust systems that maintain a balance between responsiveness and efficiency. As a thought to consider, it might be beneficial to implement a feature that logs the usage of each number, providing you with insights on their activity. This could be handy for future optimizations. The initial deliverable will take about 30 days. What does success look like for you at the end of this project?
$110 USD in 30 days
2.0
2.0

Hello, I understand you need a clean, reliable system to provision and manage 300+ short-lived virtual numbers for real-time OTP SMS capture with fast access via web and Android. This is a high-concurrency, time-sensitive system where speed, provider reliability, and lifecycle automation are critical. I would build an API-driven number orchestration layer with pooled SMS gateway integration, real-time message streaming, and automated 30-minute TTL-based provisioning and teardown. A WebSocket-based dashboard plus a lightweight mobile interface would ensure instant OTP visibility and full control over active numbers. I have experience designing similar real-time messaging and automation systems focused on performance, scalability, and operational reliability, and I can deliver a stable solution that meets your speed and volume requirements. I’d be glad to work with you and build this system properly from the ground up.
$100 USD in 5 days
2.2
2.2

Bheriganga, Nepal
Member since Apr 5, 2026
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