Home Prefix Lookup209.58.128.0/20

209.58.128.0/20 - Leaseweb USA (AS7203)

IPv4ARINallocatedAS7203LEASEWEB-USA-SFO - Leaseweb USA, Inc. RPKI Valid

CIDR

209.58.128.0/20

IP Version

IPv4

Addresses

Mask

/20 (255.255.240.0)

Country

🇺🇸 United States

City

San Jose (Berryessa)

RIR

ARIN

Status

allocated

Allocated

1999-04-29

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
209.58.128.0/20	AS7203 LEASEWEB-USA-SFO - Leaseweb USA, Inc.	Valid	ARIN	2026-10-12

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
209.58.128.0/20	AS7203	/20	arin

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS7203	ARIN	MNT-LU-76	2026-08-04

Transfer History

Registry transfers of 209.58.128.0/20, blocks inside it, or blocks containing it.

209.58.128.0/20M&A · 2015-11-12
Leaseweb USA, Inc.
🇺🇸 US ARIN
→
Leaseweb USA, Inc.
🇺🇸 US ARIN

Date	Resource	From	To	Type
2015-11-12	209.58.128.0/20	Leaseweb USA, Inc. 🇺🇸 US ARIN	Leaseweb USA, Inc. 🇺🇸 US ARIN	M&A

Origin ASN

AS7203

LEASEWEB-USA-SFO - Leaseweb USA, Inc.

Related Prefixes

More prefixes of AS7203

All prefixes of AS7203 →

Geolocation

Country🇺🇸United StatesUS

RegionCalifornia

CitySan Jose (Berryessa)

Coordinates37.3882, -121.8880 ↗

Learn more

RPKI and ROAs explainedWhat RPKI valid, invalid and no ROA mean
RPKI validatorCheck ROA coverage for any prefix or ASN
What is BGP?How prefixes are announced and routed
More-specific prefixesGlossary: covering and more-specific routes
IPv4 transfers in the ARIN regionWho bought and sold address space recently

API

Open

GEThttps://api.ipctl.io/v1/prefix/209.58.128.0/20

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

curl -s "https://api.ipctl.io/v1/prefix/209.58.128.0/20" | jq

External Links

RIPEstat