104.251.239.0/24

🇯🇵

CIDR

104.251.239.0/24

IP Version

IPv4

Addresses

256

Mask

/24 (255.255.255.0)

Country

🇯🇵 Japan

City

Tokyo

RIR

ARIN

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Prefix	Origin AS	RPKI	IRR	Last Seen
104.251.239.0/24	AS400618PRIME-SEC - Prime Security Corp.	Valid	RADB	5/31/2026

1 less-specific announcement

Prefix	Origin AS	RPKI	IRR	Last Seen
104.251.238.0/23	AS400618PRIME-SEC - Prime Security Corp.	Valid	—	5/31/2026

Prefix	Origin	Max Length	Trust Anchor
104.251.224.0/20	AS9886	/24	arin
104.251.224.0/20	AS140042	/24	arin
104.251.224.0/20	AS151797	/24	arin
104.251.224.0/20	AS153517	/24	arin
104.251.224.0/20	AS400618	/24	arin

Origin	Registry	Maintainer	Modified
AS140042	RADB	MAINT-AS9886	12/16/2024
AS153517	RADB	MAINT-AS140096	4/28/2026
AS400618	RADB	MAINT-AS9886	11/9/2025

Origin ASN

Geolocation

Country🇯🇵JapanJP

CityTokyo

API

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

curl -s "https://api.ipctl.io/v1/prefix/104.251.239.0/24" | jq

External Links