Subnet Vault vs IT電卓+

Subnet Vault is a subnet calculator and network toolkit for network engineers, IT administrators, students and anyone studying for a networking certification. SUBNET CALCULATORS • IPv4: enter an address with a CIDR prefix or subnet mask to get the network and broadcast addresses, usable host range, host count, wildcard mask, network class, binary breakdown, reverse-DNS (in-addr.arpa) name, and IPv6-mapped and 6to4 forms. Auto-Detect fills in your current Wi-Fi network. • VLSM: split a network into subnets of different sizes. You get an efficient allocation, a colour-coded map of the address space, and CSV export. • IPv6: expanded and compressed forms, prefix, address range and address count for any prefix length. • Colour-coded binary views show exactly where the network bits end and the host bits begin. 17 NETWORK TOOLS • Reachability: Ping, Traceroute (with optional network-owner lookup) and Port Scanner • DNS: DNS Lookup, Reverse DNS, and DNS Propagation across major public resolvers • Web: HTTP Headers with timing, and SSL Certificate with chain and expiry • Ownership: WHOIS and IP Geolocation • Local network: My Network, Network Services (Bonjour discovery) and Wake-on-LAN • Wireless: Bluetooth Scanner, Bluetooth Explorer, NFC Tag Reader and NFC Tag Writer (NFC requires an iPhone) Export results as text, CSV or JSON, or copy any value with one tap. SAVE AND SYNC Save IPv4, VLSM and IPv6 results, then rename, search, share or reopen them in the calculator. Saved results sync across your devices through iCloud and appear in Spotlight search. LEARN IPv4, binary and wireless reference tables, a step-by-step subnetting tutorial, and a searchable networking glossary. BUILT FOR EVERY DEVICE • A side-by-side layout on iPad • Full Dynamic Type, VoiceOver and Reduce Motion support • Dark mode PRIVACY FIRST No ads, no tracking and no accounts. Subnet Vault collects no data. Your saved results stay in your own iCloud, and network lookups go only to the service you asked to query.

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. [Languages] Japanese and English. [Privacy] Calculations stay on your device. The app does not upload your inputs or results.