203.173.64.0/20

🇯🇵

CIDR

203.173.64.0/20

IP Version

IPv4

Addresses

Mask

/20 (255.255.240.0)

Country

🇯🇵 Japan

City

Shinagawa

RIR

APNIC

Status

allocated

Allocated

10/24/2001

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Prefix	Origin AS	RPKI	IRR	Last Seen
203.173.64.0/20	AS17977SINGTEL-JP - NF Park Bldg.3F, 9-15, Futaba 2-Chome	Valid	APNIC	5/31/2026

Prefix	Origin	Max Length	Trust Anchor
203.173.64.0/20	AS7473	/20	apnic
203.173.64.0/20	AS17977	/20	apnic

Origin	Registry	Maintainer	Modified
AS7473	APNIC	MAINT-JP-STJP	4/21/2023
AS17977	APNIC	MAINT-JP-STJP	4/21/2023

Prefix	AS	Country	Status
203.173.78.0/24		🇯🇵JP	assigned

Origin ASN

Geolocation

Country🇯🇵JapanJP

RegionTokyo

CityShinagawa

API

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

curl -s "https://api.ipctl.io/v1/prefix/203.173.64.0/20" | jq

External Links