133.205.0.0/16

🇯🇵

IPv4APNICannouncedAS2518BIGLOBE - BIGLOBE Inc. RPKI Valid

CIDR

133.205.0.0/16

IP Version

IPv4

Addresses

65.5K

Mask

/16 (255.255.0.0)

Country

🇯🇵 Japan

City

Chiyoda City

RIR

APNIC

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Prefix	Origin AS	RPKI	IRR	Last Seen
133.205.0.0/16	AS2518BIGLOBE - BIGLOBE Inc.	Valid	RADB	6/13/2026

Prefix	Origin	Max Length	Trust Anchor
133.200.0.0/13	AS2518	/24	apnic

Origin	Registry	Maintainer	Modified
AS2518	RADB	MESH	1/4/2024

Origin ASN

Geolocation

Country🇯🇵JapanJP

RegionTokyo

CityChiyoda City

API

Returns prefix allocation, BGP routes, and more-specific subnets.

curl -s "https://api.ipctl.io/v1/prefix/133.205.0.0/16" | jq

External Links