AS26158 ULTIMATE SOFTWARE GROUP

USG-TOR-AS - ULTIMATE SOFTWARE GROUP · registered in the United States

IPv4 addresses5122 prefixes · <0.001% of announced IPv4

Rank in United States#11,129largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#50,547of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS26158 in ASN lookup Look up an IP in this network (135.84.79.1) All networks in United States

IPv4 prefixes

All 2 prefixes, in address order.

135.84.79.0/24
206.152.14.0/24

Other ASNs named ULTIMATE SOFTWARE GROUP

3 other networks use the same organisation name; together with AS26158 they announce 4,352 IPv4 addresses.

ASNNameIPv4 addresses

AS32077ULTISOFTASN - ULTIMATE SOFTWARE GROUP US2,048

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

AS397133USG-NPE-WEST01 - ULTIMATE SOFTWARE GROUP US512

Similar-sized networks in United States

ASNNameIPv4 addresses

AS26102#11126 CALIBRE6354 - CALIBRE Systems Inc.512

AS26109#11127 L-PERRIGO-GLOBAL - L. Perrigo Company512

AS26148#11128 CSMPR - Cooperativa de Seguros Multiples de Puerto Rico512

AS26161#11130 TMEIC-A - TMEIC Corporation Americas512

AS26176#11131 AJA - AJA Video Systems, Inc.512

AS26208#11132 COUNTY-OF-ESSEX-NJ - County of Essex NJ512

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