121.58.128.0/21

🇯🇵

CIDR

121.58.128.0/21

IP Version

IPv4

Addresses

Mask

/21 (255.255.248.0)

Country

🇯🇵 Japan

City

Fujikawaguchiko (Funatsu)

RIR

APNIC

Status

allocated

Allocated

11/9/2007

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Prefix	Origin AS	RPKI	IRR	Last Seen
121.58.128.0/21	AS131954LCNet - Kawaguchiko cable television Inc	Valid	RADB	5/31/2026

Prefix	Origin	Max Length	Trust Anchor
121.58.128.0/21	AS131954	/21	apnic

Origin	Registry	Maintainer	Modified
AS131954	RADB	MAINT-AS2516	11/13/2023

Origin ASN

Geolocation

Country🇯🇵JapanJP

RegionYamanashi

CityFujikawaguchiko (Funatsu)

API

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

curl -s "https://api.ipctl.io/v1/prefix/121.58.128.0/21" | jq

External Links