AppBrain's verdict
- Last updated
- October 25, 2026
- Size
- 1.77 MB
User feedback
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Store listing
By Julian Christopher Siebert, from the App StoreDescription by Julian Christopher Siebert Written by the developer, not by AppBrain. Click to read.
Calculate network addresses, broadcast, host ranges and more. Smart IP input field with automatic octet separation, number keyboard, and auto-jump. Binary view with color highlighting (network bits blue, host bits green).
• IP OWNER LOOKUP
Discover who owns an IP address. Shows organization, ISP, ASN, location on map (MapKit) and more. Auto-search after 1 second. Multi-API with fallback (IP-API.com, ipapi.co, ipinfo.io). 24h offline cache.
• VLSM CALCULATOR
Plan complex subnet structures. Automatic calculation of optimal CIDR values. IP shortage warning. Export as PDF or CSV. History of last 10 plans.
• SUBNET REFERENCE
Complete table of all subnet masks (/0 to /32). Search/filter function. Favorite stars for frequently used masks.
• NETWORK TOOLS
- HTTP Ping: Test connectivity with real response times
- Port Scanner: Scan common ports (SSH, HTTP, HTTPS, RDP, MySQL)
- DNS Lookup: Domain resolution via Google DNS
- IP Batch Scanner: Scan IP ranges, CSV export
Safety and technology
Found in the app by AppBrain- Price
- $0.99
- App size
- 1.77 MB
- Content rating
- Everyone
Technologies used by SubnetCalc Pro
Releases
Updates seen on the App Store- Version
- 1.3.1
- Launched
- November 2025
No changelog data
Alternatives
Similar apps and more from Julian Christopher SiebertMore from Julian Christopher Siebert
Rankings
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About the app and developer
About SubnetCalc Pro
SubnetCalc Pro is an utilities app developed by Julian Christopher Siebert.
User Ratings
The app has no ratings yet.
App Information
SubnetCalc Pro costs $0.99. The app size is 1.77 MB. The latest version available is 1.3.1. The last update was on October 25, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since November 2025.
SubnetCalc Pro is made and published by Julian Christopher Siebert. AppBrain is an independent app data site and isn't affiliated with Julian Christopher Siebert. The app name, icon, screenshots and description belong to Julian Christopher Siebert and are shown as published on the App Store.
Developer information for Julian Christopher Siebert
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Frequently asked questions about SubnetCalc Pro
Is SubnetCalc Pro free?
No. SubnetCalc Pro costs $0.99 on the App Store.
Is SubnetCalc Pro still available?
Yes. SubnetCalc Pro is on the App Store, and the last update we saw was on October 25, 2026.
How large is SubnetCalc Pro?
SubnetCalc Pro is 1.77 MB.
Is SubnetCalc Pro suitable for children?
App Store rates the content of SubnetCalc Pro as suitable for everyone.
Who made SubnetCalc Pro?
SubnetCalc Pro was developed by Julian Christopher Siebert. It is listed in the utilities category on the App Store.