AS397133 ULTIMATE SOFTWARE GROUP

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

IPv4 addresses5122 prefixes · <0.001% of announced IPv4

Rank in United States#12,329largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#58,302of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS397133 in ASN lookup Look up an IP in this network (135.84.76.1) All networks in United States

IPv4 prefixes

All 2 prefixes, in address order.

135.84.76.0/24
158.228.12.0/24

Other ASNs named ULTIMATE SOFTWARE GROUP

3 other networks use the same organisation name; together with AS397133 they announce 4,352 IPv4 addresses.

ASNNameIPv4 addresses

AS32077ULTISOFTASN - ULTIMATE SOFTWARE GROUP US2,048

AS17289USG-PROD-WEST01 - ULTIMATE SOFTWARE GROUP US1,280

AS26158USG-TOR-AS - ULTIMATE SOFTWARE GROUP US512

Similar-sized networks in United States

ASNNameIPv4 addresses

AS397108#12326 WNMC - WNM Communications512

AS397116#12327 WMLPNET-AS-01 - Wellesley Municipal Light Plant512

AS397126#12328 SWRI-BLDR - Southwest Research Institute512

AS397140#12330 ANB-NET - Amarillo National Bank512

AS397146#12331 FARMCREDIT-MIDAMERICA - Farm Credit Mid-America512

AS397155#12332 BOK-CENTER - BOK Center512

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