MeridianMERIDIAN

CIDR Notation

Classless Inter-Domain Routing notation combining an IPv4 address with a prefix length (e.g., 192.168.1.0/24). Used in network configuration, firewall rules, and IP access control.

CIDR Notation

technology.internet.cidr

Classless Inter-Domain Routing notation combining an IPv4 address with a prefix length (e.g., 192.168.1.0/24). Used in network configuration, firewall rules, and IP access control.

Domain
technology
Category
internet
Casts to
VARCHAR
Scope
Universal

Try it

CLI
$ finetype infer -i "192.168.1.0/24"
→ technology.internet.cidr

DuckDB

Detect
SELECT finetype('192.168.1.0/24');
-- → 'technology.internet.cidr'
Cast expression
CAST({col} AS VARCHAR)
Safe cast pipeline
-- Normalise and cast in one step
SELECT TRY_CAST(finetype_cast(my_column) AS VARCHAR) AS clean_value
FROM my_table
WHERE finetype(my_column) = 'technology.internet.cidr';

Struct Expansion

Expression
network: REGEXP_EXTRACT({col}, '^([^/]+)/')
prefix_length: CAST(REGEXP_EXTRACT({col}, '/(\d+)$') AS TINYINT)

JSON Schema

finetype schema technology.internet.cidr
{
  "$id": "https://meridian.online/schemas/technology.internet.cidr",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "description": "Classless Inter-Domain Routing notation combining an IPv4 address with a prefix length (e.g., 192.168.1.0/24). Used in network configuration, firewall rules, and IP access control.",
  "examples": [
    "192.168.1.0/24",
    "10.0.0.0/8",
    "172.16.0.0/12",
    "0.0.0.0/0"
  ],
  "pattern": "^(?:(?: 25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?: 25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)/([0-9]|[12]\\d|3[0-2])$",
  "title": "CIDR Notation",
  "type": "string",
  "x-finetype-broad-type": "VARCHAR",
  "x-finetype-transform": "CAST({col} AS VARCHAR)",
  "x-finetype-transform-ext": "CAST({col} AS INET)"
}

Examples

192.168.1.0/2410.0.0.0/8172.16.0.0/120.0.0.0/0

Aliases

cidr_blockip_range

Type Registry