129.6.64.0/18

🇺🇸

CIDR

129.6.64.0/18

IP Version

IPv4

Addresses

16.3K

Mask

/18 (255.255.192.0)

Country

🇺🇸 United States

City

Gaithersburg

RIR

ARIN

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Prefix	Origin AS	RPKI	IRR	Last Seen
129.6.64.0/18	AS49US-NATIONAL-INSTITUTE-OF-STANDARDS-AND-TECHNOLOGY - National Institute of Standards and Technology	Valid	ARIN	5/31/2026

7 less-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
129.6.64.0/19	AS49US-NATIONAL-INSTITUTE-OF-STANDARDS-AND-TECHNOLOGY - National Institute of Standards and Technology	Valid	—	5/31/2026
129.6.96.0/20	AS49US-NATIONAL-INSTITUTE-OF-STANDARDS-AND-TECHNOLOGY - National Institute of Standards and Technology	Valid	—	5/31/2026
129.6.120.0/21	AS49US-NATIONAL-INSTITUTE-OF-STANDARDS-AND-TECHNOLOGY - National Institute of Standards and Technology	Valid	—	5/31/2026
129.6.116.0/22	AS49US-NATIONAL-INSTITUTE-OF-STANDARDS-AND-TECHNOLOGY - National Institute of Standards and Technology	Valid	—	5/31/2026
129.6.114.0/23	AS49US-NATIONAL-INSTITUTE-OF-STANDARDS-AND-TECHNOLOGY - National Institute of Standards and Technology	Valid	—	5/31/2026
129.6.113.0/24	AS49US-NATIONAL-INSTITUTE-OF-STANDARDS-AND-TECHNOLOGY - National Institute of Standards and Technology	Valid	—	5/31/2026
129.6.112.0/24	AS10886MAX-GIGAPOP - University of Maryland	Valid	—	5/31/2026

Prefix	Origin	Max Length	Trust Anchor
129.6.64.0/18	AS49	/18	arin

Origin	Registry	Maintainer	Modified
AS49	ARIN	MNT-NIST-Z	5/19/2025

Origin ASN

Geolocation

Country🇺🇸United StatesUS

RegionMaryland

CityGaithersburg

API

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

curl -s "https://api.ipctl.io/v1/prefix/129.6.64.0/18" | jq

External Links