CIRCUITO
CARIOCA TI · DOCUMENTATION
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CALCULATORS · CONVERTERS · GENERATORS · LOOKUPS · UTILITIES

Online Tools

Practical tools for networking, telecom, systems, security and development — fast, focused and designed for technical workflows.

37 cataloged tools
31 Available now
6 In development
7 Categories
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Tool catalog

Filter by category or type what you need. Results update instantly.

37 tools found
Available
Calculators

IPv4 Calculator

IPv4 subnetting, CIDR, hosts and VLSM

★ Featured↗
Available
Calculators

IPv6 Calculator

IPv6 subnetting and prefix subdivision

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Available
Calculators

GPON Calculator

Optical power budget and splitters

★ Featured↗
Available
Calculators

GPON Optical Budget

Power, splitters and optical budget chart

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Available
Calculators

RAID Calculator

Capacity and redundancy for RAID 0/1/5/6/10

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Available
Calculators

PoE Budget Calculator

Available power for PoE devices

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Available
Converters

dBm Converter

dBm ↔ mW, dB and optical link calculations

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Available
Converters

CIDR Converter

Subnet mask, wildcard and IP range

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Available
Converters

Data Unit Converter (TB/GB/MB)

Bits, bytes, kilobytes and megabytes

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Available
Converters

Unix Timestamp Converter

Unix timestamp ↔ readable date and time

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Available
Converters

Number Base Converter

Binary, hexadecimal, decimal and octal

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Available
Generators

Bandwidth Control Generator

Cisco IOS rate-limit configuration

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Available
Generators

VLAN Configuration Generator

Configuration for Datacom and Cisco switches

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Available
Generators

ACL Generator

ACL templates for Cisco, MikroTik and Huawei

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Available
Generators

Secure Password Generator

Strong passwords for network equipment and VPNs

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Available
Generators

Hash Generator

MD5, SHA-1, SHA-256, SHA-512 and HMAC

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Coming soon
Generators

Datacom Generator

Ready-to-use Datacom CLI scripts

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Coming soon
Generators

Nokia Generator

OLT configuration templates

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Coming soon
Generators

Huawei Generator

MA5800 configuration templates

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Available
Lookups

DNS Lookup

A, AAAA, MX, TXT and PTR records

★ Featured↗
Available
Lookups

GeoIP / Country by IP

Geographic location information for an IP address

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Available
Lookups

Port Check

Check whether a TCP port is reachable

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Available
Lookups

HTTP Headers

Inspect HTTP response headers for a URL

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Available
Lookups

MAC Vendor Lookup

Identify manufacturer from MAC address (OUI)

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Available
Lookups

SPF / DKIM / DMARC

Inspect email authentication records

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Coming soon
Lookups

WHOIS

Domain and IP registration information

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Available
Lookups

Blacklist Checker (RBL/DNSBL)

Check IP addresses and domains against blacklists

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Available
Utilities

Online Ping

Connectivity test for hosts and IP addresses

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Available
Utilities

Online Traceroute

Trace network paths and hops

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Available
Utilities

BGP Tester

Looking Glass, AS Path, RPKI and bogon checks

★ Featured↗
Available
Utilities

OSPF Simulator

Cost calculation, areas and LSAs

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Coming soon
Utilities

Network Topology Diagrammer

Build and visualize network topologies

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Coming soon
Utilities

Log Analyzer

Analyze syslog messages and SNMP traps

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Available
Security

SSL/TLS Certificate Checker

Validity, issuer, algorithm and expiration

★ Featured↗
Available
Security

Base64 Encoder/Decoder

Encode and decode Base64 data

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Available
Developer Tools

JSON/YAML Formatter

Validate and format JSON and YAML data

★ Featured↗
Available
Developer Tools

Cron Expression Generator/Validator

Create and validate cron expressions

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