Layer3 – Network Tools
Scan, Ping, Trace, DNS, Subnet
9,99 €
Find devices, check reachability, DNS, whois, subnets – plus traceroute and MAC addresses through the free agent for Mac and Windows. No account, no tracking.
Layer3 bundles the things an admin does all day – on iPhone, iPad and Mac, without opening the laptop. Every device you find is a card from which all tools are one tap away.
FIND DEVICES
• Home page with the device list of your network: ping sweep, hostnames, vendors from the IEEE registry
• Scan history with a diff to the previous scan: new, gone, moved, renamed
• MAC addresses from your router’s ARP table (SNMP) or from the Layer3 Agent – even for devices that do not answer ping
• Search by name, IP, MAC or vendor; open any address directly
CHECK
• Ping with statistics, jitter and history, IPv4 and IPv6
• Traceroute through the Layer3 Agent: hops live with names and packet loss, ICMP or UDP
• Port check: common ports, 1–1024 or your own list, with banners; web ports open in the browser
• Path MTU: the largest packet size that gets through without fragmentation
• Diagnosis assistant: checks DNS, ping, web ports and MTU and tells you in plain words what is wrong
DNS & WHOIS
• DNS lookup for all record types, system resolver or Cloudflare, Google, Quad9, your own server
• Resolver comparison – four resolvers at once, e.g. after DNS changes
• Whois for domains, IP addresses and AS numbers, following referrals to the responsible server
• My Network: public IP and ASN, the way the internet sees you
SUBNETS
• Calculator for IPv4 and IPv6 with binary view
• Split, VLSM planning and summarization
• Config snippets for Cisco, MikroTik, Juniper, FortiGate and Linux; export as CSV and Markdown
SNMP
• System info, interfaces and ARP table of your router (SNMPv2c, read-only)
LAYER3 AGENT (MAC AND WINDOWS, FREE)
iPhone and iPad are not allowed to run traceroute and cannot see MAC addresses. The free Layer3 Agent runs on a Mac or Windows PC in your network and takes over exactly that. Layer3 discovers it automatically, you enter a pairing code once – the connection is encrypted and stays within your network. Download and guide: bumberger.at/layer3
PRIVACY
No account, no ads, no tracking, no cloud. Scans and settings stay on your device. Only DNS, whois and “My Network” query – when you start them – the respective resolvers and whois servers.
English and German. Universal purchase for iPhone, iPad and Mac.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
The Layer3 Agent is now also available for Windows – the hints in the app mention Mac and Windows PC. Download and guide: bumberger.at/en/layer3
The developer, Christian Bumberger, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Size
- 8.2 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English and German
- Age Rating
4+
- 4+
- Provider
Christian Bumberger
- Christian Bumberger has not identified itself as a trader for this app. If you are a consumer in the European Economic Area, consumer rights do not apply to agreements between you and the provider.
- Copyright
- © 2026 Christian Bumberger
