172.56.140.0/23

🇺🇸

CIDR

172.56.140.0/23

IP Version

IPv4

Addresses

512

Mask

/23 (255.255.254.0)

Country

🇺🇸 United States

City

Los Angeles

RIR

ARIN

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Prefix	Origin AS	RPKI	IRR	Last Seen
172.56.140.0/23	AS21928T-MOBILE-AS21928 - T-Mobile USA, Inc.	Valid	ARIN	5/31/2026

2 less-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
172.32.0.0/11	AS21928T-MOBILE-AS21928 - T-Mobile USA, Inc.	Valid	—	5/31/2026
172.56.0.0/16	AS21928T-MOBILE-AS21928 - T-Mobile USA, Inc.	Valid	—	5/31/2026

Prefix	Origin	Max Length	Trust Anchor
172.56.0.0/16	AS21928	/23	arin
172.32.0.0/11	AS21928	/24	arin

Origin	Registry	Maintainer	Modified
AS21928	ARIN	MNT-TMOBI	5/2/2025

Origin ASN

Geolocation

Country🇺🇸United StatesUS

RegionCalifornia

CityLos Angeles

API

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

curl -s "https://api.ipctl.io/v1/prefix/172.56.140.0/23" | jq

External Links