Subnet Vault vs IT電卓+

Subnet Vault is a subnet calculator and network toolkit for iPhone and iPad. Work out any IPv4 or IPv6 network as you type, plan address space with VLSM, and diagnose networks with 20 built-in tools. CALCULATE • Live results for IPv4 and IPv6: network, first and last host, usable hosts, subnet mask, wildcard mask and broadcast address • Type a prefix, a subnet mask or a wildcard mask • See whether an address is public, private or reserved, from IANA's special-purpose registries • Hex, integer and reverse-DNS forms, plus a colour-coded binary view • Split a network into equal subnets, check whether an address is inside a network, or find the supernet of two • VLSM planner: name each subnet, give its host count, and get a colour-coded map of the plan • Save results and plans, sync them through iCloud, and find them with Spotlight NETWORK TOOLS Reachability: Ping with a live chart, jitter and packet loss. Traceroute, with optional network-owner lookups. Port Scanner. DNS: DNS Lookup for A, AAAA, MX, CNAME, TXT, NS, SOA, SRV and PTR records. Reverse DNS. DNS Propagation across four public resolvers. Web: HTTP Headers, with the redirect chain and timing. SSL Certificate, with the full chain and the days left before it expires. Ownership: WHOIS for domains, IP addresses and AS numbers, from each registry's RDAP service. IP Geolocation. Your network: My Network shows your addresses, router, DNS servers, NAT type and every connection. LAN Scanner finds the devices on your network and marks new ones. Network Services discovers Bonjour services such as printers and AirPlay devices. Wake-on-LAN wakes a sleeping device. MAC Lookup names a device's maker from its MAC address, typed in or read from its label with the camera. Speed Test measures download, upload and latency on Measurement Lab (M-Lab). Wireless: Bluetooth Scanner and Bluetooth Explorer show nearby Bluetooth LE devices and their services. NFC Tag Reader and Writer read, write, erase and lock tags (iPhone with NFC). WORLDWIDE CHECKS Run Ping, Traceroute, DNS Lookup and HTTP Headers from up to six locations, one on each continent, through the Globalping network. EXPORT AND SHARE Export results from most tools as text, CSV or JSON, copy any value with a tap, and share calculations by Messages, Mail or AirDrop. LEARN An OSI model guide that links each layer to the tools that work at it, a subnetting tutorial, a glossary, and binary, IPv4 and wireless reference tables. PRIVACY No analytics, no advertising and no tracking. Calculations, saved results and scan history stay on your device and in your own iCloud. Tools that need an internet service send only what you look up, and the privacy policy names each service. Speed tests run on M-Lab, which publishes each test's IP address and results as open data, so the app asks before your first test. Built for VoiceOver and large text sizes. Only scan networks and hosts that you own or have permission to test.

IT電卓+ is a focused calculator for engineers, network administrators, and learners studying for IT certifications. Four common tasks are organized into simple, switchable tabs. [Unit Conversion] Convert between bit, B, KB, MB, GB, TB, and PB. Toggle between SI prefixes (base 1000) and IEC prefixes (base 1024 — KiB, MiB, etc.) so you can match the convention you need for storage, memory, or traffic. [Subnet Mask Calculator] Enter an IPv4 address and a CIDR value to get the network address, broadcast address, first and last usable host, subnet mask, wildcard mask, and host counts. /31 (RFC 3021) and /32 are handled correctly as special cases. [Base Conversion and Bit Operations] Convert between binary, octal, decimal, and hexadecimal. Binary output is grouped every four bits for readability. AND, OR, XOR, left shift, and right shift are available on the same screen. [Link Speed and Transfer Time] Convert across bps, Kbps, Mbps, Gbps, B/s, KB/s, MB/s, and GB/s. Combine a file size with a link rate to estimate how long a transfer will take. [16 languages] Available in 16 languages: Japanese, English, Simplified and Traditional Chinese, Spanish, Portuguese (Brazil), Korean, German, French, Hindi, Indonesian, Russian, Italian, Turkish, Thai, and Vietnamese. The app follows your device language. [Privacy] Calculations stay on your device. The app does not upload your inputs or results. [Price and ads] The app is free, with every feature available from the start. There are no in-app purchases or subscriptions. A banner ad is shown at the bottom of each screen. You choose whether ads may be personalized on first launch and can change it at any time under "Ad settings" in Settings.