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CIDR Trainer

IPv4 and IPv6 subnet drills

Published by: David Root

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Description

CIDR Trainer trains users to perform network subnet calculations. It uses directed training drills while providing documentation to instruct users to perform each step of network subnetting calculations.
CIDR Trainer includes IPv4 and IPv6 CIDR calculators.
Version 1.1 includes the following categories of drills:
1-digit hexadecimal and binary drills
2-digit hexadecimal and binary drills
IPv4 terminology drills
IPv4 prefix-length drills
IPv4 CIDR drills
IPv6 Address Shortening and Lengthening Drills
IPv6 Terminology Drills
IPv6 CIDR Drills
IPv4 and IPv6 CIDR Calculators
You may try each training drill for free 20 times. After that you may try the other drills or purchase a permanent unlock of all training drills for a low price (see in-app purchases for the "forever full-unlock" price in your region). One purchase unlocks all versions of the app (iOS, iPadOS, and MacOS). CIDR Trainer uses iCloud to sync drill progress between your devices.
Each training drill has a "help" button in the top-right which provides related documentation
Full list of drills: (you may try them in any order)
1-digit hex -> decimal
1-digit decimal -> hex
1-digit hex -> binary
Binary -> 1-digit hex
4-digit binary -> decimal
Decimal -> 4-digit binary
1-bit AND
2-digit hexadecimal -> decimal (easy multiples of 16)
Decimal -> 2-digit hexadecimal (easy multiples of 16)
2-digit hexadecimal -> binary
binary -> 2-digit hexadecimal
2-digit hexadecimal -> decimal
Decimal -> 2-digit hexadecimal
8-digit binary -> decimal
Decimal -> 8-digit binary
8-bit AND
Valid IPv4 address recognition
IPv4 address types
IPv4 prefix-length to binary netmask
IPv4 binary netmask to prefix-length
IPv4 prefix-length to hexadecimal netmask
IPv4 hexadecimal netmask to prefix-length
IPv4 prefix-length to dotted-decimal netmask
IPv4 dotted-decimal netmask to prefix-length
IPv4 CIDR Drills:
Number of IPs in a CIDR
Number of usable unicast IPs in a CIDR
CIDR to network address in binary
CIDR to network address in decimal
Well-formed CIDR to broadcast address
Well-formed CIDR to first usable IP address
Well-formed CIDR to last usable IP address
IPv6 Address Shortening and Lengthening Drills:
IPv6 Hextet Shortening
IPv6 Hextet Lengthening
IPv6 Eight Hextet Shortening
IPv6 Eight Hextet Lengthening
IPv6 Double Colon Shortening
IPv6 Double Colon Lengthening
IPv6 Address Shortening
IPv6 Address Lengthening
IPv6 Address Types
Valid IPv6 Sextets
Valid IPv6 Addresses
IPv6 CIDR (prefix / 16) drill
IPv6 CIDR (prefix / 4) drill
IPv6 CIDR (any prefix) drill
IPv4 CIDR Calculator
IPv6 CIDR Calculator

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Chart	Category	Rank
Top Free	Hong Kong Developer Tools	387
Top Free	Romania Developer Tools	444
Top Free	United States Developer Tools	475
Top Free	China Developer Tools	480
Top Free	Taiwan Developer Tools	500

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