SubnetOnline.com, online subnet calculator tools, online network tools, network resources, downloads, subnetting and CIDR guides and more...

These are the tools:

Subnet Calculators

• IPv6 Subnet Calculator
• IPv4 to IPv6 converter
• IPv4 CIDR Calculator
• IP Subnet Calculator
• HEX Subnet Calculator
• IPv4 Wildcard Calculator
• IPv4 Address Calculator
• Address Range calculator
• DEC to HEX calculator
• SubnetMask Calculator
• Local or Remote route

Network Tools

• Online DIG
• Online Finger
• Online Host
• Online HTTP Header
• Online NSLookup
• Online Ping IPv4
• Online Port Scanner
• Online SMTP Response
• Online Spam Resolver
• Online TracePath
• Online TraceRoute
• Anonymous Proxies
• Online Password Generator

IPv6 Network Tools

• Online IPv6 Ping
• Online IPv6 TracePath
• Online IPv6 TraceRoute
• Online IPv6 Port Scanner
• Online Dig IPv6

Converters

• HEX to BIN to DEC
• IPv4 to IPv6
• IP to BIN DEC and BIN 32-bit
• Simple Binary to Decimal
• Advanced BIN to DEC to HEX

Tutorials

• Step 1: Binary IP Calculation
• Step 2: Old-school IP Classes
• Step 3: Subnet Masking
• Step 4: Subnetting backwards
• Step 5: CIDR Addressing Scheme

References

• IPv4 Cheat Sheet
• IPv6 Cheat Sheet
• Common RFC list
• Well known Ports numbers
• Search RFC Database