AS17289 ULTIMATE SOFTWARE GROUP

USG-PROD-WEST01 - ULTIMATE SOFTWARE GROUP · registered in the United States

IPv4 addresses1,2802 prefixes · <0.001% of announced IPv4

Rank in United States#7,442largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#28,453of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS17289 in ASN lookup Look up an IP in this network (135.84.68.1) All networks in United States

IPv4 prefixes

All 2 prefixes, in address order.

135.84.68.0/24
135.84.72.0/22

Other ASNs named ULTIMATE SOFTWARE GROUP

3 other networks use the same organisation name; together with AS17289 they announce 4,352 IPv4 addresses.

ASNNameIPv4 addresses

AS32077ULTISOFTASN - ULTIMATE SOFTWARE GROUP US2,048

AS26158USG-TOR-AS - ULTIMATE SOFTWARE GROUP US512

AS397133USG-NPE-WEST01 - ULTIMATE SOFTWARE GROUP US512

Similar-sized networks in United States

ASNNameIPv4 addresses

AS17060#7439 E-NETWORKS - NBCUniversal1,280

AS17095#7440 BUILDBUDDY-01 - BuildBuddy1,280

AS17178#7441 MOTIONINDUSTRIES - Motion Industries, Inc.1,280

AS17366#7443 ARINCASN - ARINC INCORPORATED1,280

AS18527#7444 HAGC-ASN - UC Health, LLC1,280

AS18606#7445 AS-METER-1 - Meter Inc.1,280

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources