# Prefix Size Distribution
This data call returns the total amount of prefixes announced by a given ASN per subnet size and IP version.
GET /data/prefix-size-distribution/data.json?resource=AS3333&time=2020-12-05T12:00:00
# Parameters
| Key | Value | Info | Required |
|---|---|---|---|
| resource | AS for the query | - | YES |
| timestamp | ISO8601 or Unix timestamp | default: now - 2 days | NO |
| min_peers_seeing | integer | Minimum number of RIS peers seeing the prefix for it to be included in the results. Excludes low-visibility/localized announcements. | NO (default: 10) |
# Data Output
| Key | Info |
|---|---|
| ipv4 | contains prefix sizes of all IPv4 prefixes of the queried ASN |
| ipv6 | contains prefix sizes of all IPv6 prefixes of the queried ASN |
| count | total number of prefixes with the prefix size denoted by size |
| size | Prefix size |
| resource | holds the AS number the result is based on |
| query_time | holds the time of the snapshot the result is based on |
# Code Examples
# Available versions for this data call:
2.2
This is the current and only version of this API call.