137.75.240.0/20

🇺🇸

CIDR

137.75.240.0/20

IP Version

IPv4

Addresses

Mask

/20 (255.255.240.0)

Country

🇺🇸 United States

City

Boulder (South Boulder)

RIR

ARIN

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Prefix	Origin AS	RPKI	IRR	Last Seen
137.75.240.0/20	AS2648NOAA-BOULDER - National Oceanic and Atmospheric Administration	Valid	ARIN	6/13/2026

Prefix	Origin	Max Length	Trust Anchor
137.75.240.0/20	AS2648	/20	arin
137.75.128.0/17	AS14041	/17	arin

Origin	Registry	Maintainer	Modified
AS2648	ARIN	MNT-NOAA-7-Z	9/2/2025

Origin ASN

Geolocation

Country🇺🇸United StatesUS

RegionColorado

CityBoulder (South Boulder)

API

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

curl -s "https://api.ipctl.io/v1/prefix/137.75.240.0/20" | jq

External Links