203.64.138.0/23

🇹🇼

CIDR

203.64.138.0/23

IP Version

IPv4

Addresses

512

Mask

/23 (255.255.254.0)

Country

🇹🇼 Taiwan

City

Taipei

RIR

APNIC

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Prefix	Origin AS	RPKI	IRR	Last Seen
203.64.138.0/23	AS17716NTU-TW - National Taiwan University	Valid	—	5/31/2026

1 less-specific announcement

Prefix	Origin AS	RPKI	IRR	Last Seen
203.64.0.0/16	AS1659ERX-TANET-ASN1 - Taiwan Academic Network (TANet) Information Center	Valid	—	5/31/2026

Prefix	Origin	Max Length	Trust Anchor
203.64.138.0/23	AS17716	/23	apnic
203.64.0.0/16	AS1659	/16	apnic

Origin ASN

Geolocation

Country🇹🇼TaiwanTW

RegionTaiwan

CityTaipei

API

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

curl -s "https://api.ipctl.io/v1/prefix/203.64.138.0/23" | jq

External Links