SMORTLER VioScans
Violet’s IP Playground

A CIDR becomes a map.

Give Violet an address, a mask, or a hostname and she will make the network visible. Public, private, routable, reversed, bounded, or badly misunderstood — this is where hidden structure steps into the light.

Live bit toggles IPv4 + subnet math Reverse resolve oracle Atlas of known realms
Violet’s philosophy: “Do not just memorize the range. Feel the shape of the boundary.”
Violet pointing with surprise, calling attention to an important part of the IP Playground
Interactive workbench

The Bit Awakening

Toggle the bits. Move the CIDR boundary. Watch the decimal values change, and let the network line become something you can actually see.

Live address
192.168.1.14/24
Mask boundary
255.255.255.0
Violet draws the boundary here: /24
Each octet is a row of eight sleeping switches. When they awaken, value emerges. When Violet shifts the mask, the left side becomes law - the realm itself - and the right side becomes the host space that lives within it.
Network
192.168.1.0
Broadcast
192.168.1.255
Usable hosts
254
First usable
192.168.1.1
Last usable
192.168.1.254
Classful hint
Class C heritage
Calculator

The Subnet Spellbook

Feed Violet an IPv4 address, CIDR block, or IPv4 plus subnet mask. She will reveal the network, broadcast, usable range, host count, and the nature of the territory you have entered.

Violet presenting the subnet results
Entered host
192.168.1.14
CIDR
/24
Mask
255.255.255.0
Wildcard
0.0.0.255
Network
192.168.1.0
Broadcast
192.168.1.255
First usable
192.168.1.1
Last usable
192.168.1.254
Usable hosts
254
Violet marks the edges: network on the left, broadcast on the right, and the living host space in between.
Nature of the address
Private RFC1918
A private LAN range very common in homes and offices.
Class C heritage - old world default /24 territory.
Violet’s cautions
  • This address is not publicly routable. That is often correct, but it matters when expectations are wrong.
This address has taken shape beneath Violet’s gaze. The boundary is clear, the realm defined, and the host space counted. Beyond 192.168.1.255, another subnet begins.
Violet giving a skeptical look while studying a reverse DNS mismatch
Lookup

The Reverse Resolve Oracle

Ask Violet about an IPv4 address or hostname. She will look for forward answers, reverse answers, and the little inconsistencies that make operators sigh and analysts narrow their eyes.

A name that points one way and an address that points another can unsettle mail systems, security tools, and the people who must explain them. Violet notices such imbalances.
Reference

Violet’s Atlas of Known Realms

Public. Private. Link-local. Loopback. CGNAT. Documentation. Benchmark. Multicast. These ranges are not all what they seem, and many technical users are taught them only halfway.

Violet giving a thumbs up beside the network range atlas

Private RFC1918

10.0.0.0/8

A vast internal realm for private networks.

Realm range
10.0.0.0 → 10.255.255.255

Private RFC1918

172.16.0.0/12

Private space often used by enterprises and segmented environments.

Realm range
172.16.0.0 → 172.31.255.255

Private RFC1918

192.168.0.0/16

The familiar small-lan territory of homes and offices.

Realm range
192.168.0.0 → 192.168.255.255

Loopback

127.0.0.0/8

Traffic that never leaves the host.

Realm range
127.0.0.0 → 127.255.255.255

Link-local / APIPA

169.254.0.0/16

Often seen after DHCP failure or self-assignment.

Realm range
169.254.0.0 → 169.254.255.255

CGNAT

100.64.0.0/10

Carrier-managed address space, not truly public.

Realm range
100.64.0.0 → 100.127.255.255

TEST-NET-1

192.0.2.0/24

Documentation space for examples.

Realm range
192.0.2.0 → 192.0.2.255

TEST-NET-2

198.51.100.0/24

Documentation space for examples.

Realm range
198.51.100.0 → 198.51.100.255

TEST-NET-3

203.0.113.0/24

Documentation space for examples.

Realm range
203.0.113.0 → 203.0.113.255

Benchmark

198.18.0.0/15

For lab-style testing and benchmarking.

Realm range
198.18.0.0 → 198.19.255.255

Multicast

224.0.0.0/4

Where one voice may speak to many listeners.

Realm range
224.0.0.0 → 239.255.255.255

Reserved / future use

240.0.0.0/4

Reserved space not meant for normal host assignment.

Realm range
240.0.0.0 → 255.255.255.254

Limited broadcast

255.255.255.255/32

The local all-hosts shout.

Realm range
255.255.255.255 → 255.255.255.255
Some addresses are meant for the world. Some are meant only for the inner rooms. Some are examples, some are echoes, and some are warnings wearing ordinary clothes.
Remember this

What Violet wants you to remember

Violet offering a friendly reminder with one finger raised
The octets
IPv4 is four octets, each built from eight bits. Each row is a small field of switches waiting to become value.
The boundary
The mask is not decoration. It is the line that decides what is realm and what is resident.
The misconception
“It has an IP” is not enough. Violet cares whether it is public, private, routable, valid, aligned, and named.
The best operators do not merely memorize ranges. They feel the shape of them. They know when a mask is broken, when a gateway is lying, when an address is private despite its costume, and when DNS is only pretending to be whole.