140.131.0.0/16

🇹🇼

CIDR

140.131.0.0/16

IP Version

IPv4

Addresses

65.5K

Mask

/16 (255.255.0.0)

Country

🇹🇼 Taiwan

City

Taipei

RIR

APNIC

Status

allocated

Allocated

3/24/1990

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Prefix	Origin AS	RPKI	IRR	Last Seen
140.131.0.0/16	AS17716NTU-TW - National Taiwan University	Valid	—	5/31/2026

10 less-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
140.128.0.0/13	AS1659ERX-TANET-ASN1 - Taiwan Academic Network (TANet) Information Center	Valid	—	5/31/2026
140.131.160.0/19	AS1659ERX-TANET-ASN1 - Taiwan Academic Network (TANet) Information Center	Invalid	—	5/31/2026
140.131.152.0/21	AS1659ERX-TANET-ASN1 - Taiwan Academic Network (TANet) Information Center	Invalid	—	5/31/2026
140.131.8.0/21	AS1659ERX-TANET-ASN1 - Taiwan Academic Network (TANet) Information Center	Invalid	—	5/31/2026
140.131.16.0/22	AS1659ERX-TANET-ASN1 - Taiwan Academic Network (TANet) Information Center	Invalid	—	5/31/2026
140.131.4.0/22	AS1659ERX-TANET-ASN1 - Taiwan Academic Network (TANet) Information Center	Invalid	—	5/31/2026
140.131.2.0/23	AS1659ERX-TANET-ASN1 - Taiwan Academic Network (TANet) Information Center	Invalid	—	5/31/2026
140.131.150.0/23	AS1659ERX-TANET-ASN1 - Taiwan Academic Network (TANet) Information Center	Invalid	—	5/31/2026
140.131.1.0/24	AS1659ERX-TANET-ASN1 - Taiwan Academic Network (TANet) Information Center	Invalid	—	5/31/2026
140.131.20.0/24	AS1659ERX-TANET-ASN1 - Taiwan Academic Network (TANet) Information Center	Invalid	—	5/31/2026

Prefix	Origin	Max Length	Trust Anchor
140.131.0.0/16	AS17716	/16	apnic
140.128.0.0/13	AS1659	/13	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/140.131.0.0/16" | jq

External Links