Home Prefix Lookup72.173.0.0/16

72.173.0.0/16 - ViaSat (AS7155)

IPv4ARINallocatedAS7155VIASAT-SP-BACKBONE - ViaSat,Inc. RPKI Valid

CIDR

72.173.0.0/16

IP Version

IPv4

Addresses

65.5K

Mask

/16 (255.255.0.0)

Country

🇺🇸 United States

City

Chicago

RIR

ARIN

Status

allocated

Allocated

2005-12-14

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
72.173.0.0/16	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	ARIN	2026-10-12

More-Specific Announcements

56 more-specific announcements on this page, 256 in total

Prefix	Origin AS	RPKI	IRR	Last Seen
72.173.200.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.201.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.202.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.203.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.204.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.205.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.206.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.207.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.208.0/24	AS40306 VIASAT-3 - ViaSat,Inc.	Valid	-	2026-10-12
72.173.209.0/24	AS40306 VIASAT-3 - ViaSat,Inc.	Valid	-	2026-10-12
72.173.210.0/24	AS40306 VIASAT-3 - ViaSat,Inc.	Valid	-	2026-10-12
72.173.211.0/24	AS40306 VIASAT-3 - ViaSat,Inc.	Valid	-	2026-10-12
72.173.212.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.213.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.214.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.215.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.216.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.217.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.218.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.219.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.220.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.221.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.222.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.223.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.224.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.225.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.226.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.227.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.228.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.229.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.230.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.231.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.232.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.233.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.234.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.235.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.236.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.237.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.238.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.239.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.240.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.241.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.242.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.243.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.244.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.245.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.246.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.247.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.248.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.249.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.250.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.251.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.252.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.253.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.254.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12
72.173.255.0/24	AS7155 VIASAT-SP-BACKBONE - ViaSat,Inc.	Valid	-	2026-10-12

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
72.173.0.0/16	AS7155	/16	arin

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS7155	ARIN	MNT-VIASA-16	2024-09-05

Transfer History

Registry transfers of 72.173.0.0/16, blocks inside it, or blocks containing it.

72.173.0.0/16M&A · 2015-09-17
Viasat Communications Inc.
🇺🇸 US ARIN
→
ViaSat,Inc.
🇺🇸 US ARIN

Date	Resource	From	To	Type
2015-09-17	72.173.0.0/16	Viasat Communications Inc. 🇺🇸 US ARIN	ViaSat,Inc. 🇺🇸 US ARIN	M&A

Origin ASN

AS7155

VIASAT-SP-BACKBONE - ViaSat,Inc.

Related Prefixes

More prefixes of AS7155

All prefixes of AS7155 →

Geolocation

Country🇺🇸United StatesUS

RegionIllinois

CityChicago

Coordinates41.8781, -87.6298 ↗

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/72.173.0.0/16

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

curl -s "https://api.ipctl.io/v1/prefix/72.173.0.0/16" | jq

External Links

RIPEstat