Network tools for the
people who run them.
Fast, accurate calculators for subnetting, PoE, optical fiber and more. No sign-up, no fluff. Built in Chile by integrators, for integrators.
Everything you calculate daily, in one place
They run in your browser. Nothing is sent to any server.
IP Addressing
Subnet Calculator
Compute masks, ranges, broadcast and hosts. Supports VLSM and CIDR notation.
IPv6 Calculator
Expand and compress IPv6 addresses; compute network, prefix, range, number of /64s and address type.
Subnet Mask Converter
Convert between decimal mask, CIDR and binary instantly.
CIDR Aggregator
Summarize subnet lists into supernets and convert between IP range and CIDR list.
CIDR Table
Reference table from /0 to /32: mask, wildcard, hosts, hex and private ranges, instantly filterable.
IP Converter
Convert an IPv4 between decimal, binary, hexadecimal, octal and integer, with a per-octet breakdown.
Layer 2
MAC Toolkit
Normalize MAC formats, derive EUI-64 and IPv6 link-local, identify the bits and generate a random MAC.
VLAN Decoder
Decode and build 802.1Q tags: TPID, PCP (802.1p), DEI and VLAN ID, with a binary breakdown.
MAC Vendor (OUI)
Identify a device's manufacturer from the OUI of its MAC address.
Performance
Wireless
CCTV
Optical fiber
Power
PoE Budget
Calculate your devices' total draw and whether your switch can handle the load.
Voltage Drop
Calculate voltage drop (V and %) and the minimum AWG/mm² gauge for a given current, distance and voltage.
UPS Runtime
Estimate UPS backup minutes from load and batteries, and size the battery for a target runtime.
Datacenter
Voice
Diagnostics
DNS Lookup
Query DNS records (A, AAAA, MX, TXT, NS, PTR…) over DNS-over-HTTPS.
WHOIS / RDAP
Look up registration data for domains, IPs and ASNs via RDAP, the modern WHOIS.
My IP / IP Info
Show your public IP and everything about an IP: ASN, organization, geolocation, time zone and reverse DNS.
Port Checker
Check whether one or more TCP ports are open on a host, as seen from the internet. Handy for verifying firewall rules.
Calculation
Guides
Step-by-step networking tutorials and practical guides — subnetting, optical fiber, PoE and WiFi. We are preparing them.
Built by people who actually install networks
These tools come from daily fieldwork: counting network drops, sizing fiber links, budgeting PoE, planning racks. We publish them for free because we use them ourselves and know what is missing.
A project by AISCNET TECNOLOGIAS — Networks, security and optical fiber integration. Chile.