129.5.0.0/16

🇺🇸

CIDR

129.5.0.0/16

IP Version

IPv4

Addresses

65.5K

Mask

/16 (255.255.0.0)

Country

🇺🇸 United States

City

Hartford (Downtown)

RIR

ARIN

Status

allocated

Allocated

6/12/1987

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Prefix	Origin AS	RPKI	IRR	Last Seen
129.5.0.0/16	AS91RPI-AS - Rensselaer Polytechnic Institute	Valid	ARIN	5/31/2026

Prefix	Origin	Max Length	Trust Anchor
129.5.0.0/16	AS91	/16	arin

Origin	Registry	Maintainer	Modified
AS91	ARIN	MNT-RHGC	8/1/2025

Origin ASN

Geolocation

Country🇺🇸United StatesUS

RegionConnecticut

CityHartford (Downtown)

API

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

curl -s "https://api.ipctl.io/v1/prefix/129.5.0.0/16" | jq

External Links